Browse Topic: Powertrains

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Methodology for Reducing Engine-Radiated Noise in Tractors2026-26-0068To be published on 01/16/2026
Engine radiated noise has complex behavior since the diesel engine assembly comprises several components with varied dynamic speeds. The engine noise performance for the open station tractor is a crucial contributor to noise and needs to be optimized. Various engine noise sources have been researched, including structural like the engine block, intake, exhaust, and timing gears. Reducing noise in diesel powertrains by structural improvements entails limiting vibrations and preventing noise transfer from the engine. This can be accomplished by increasing the rigidity of the engine block and other structural components, as well as optimizing structural designs. Local adjustments to structural components have become a significant strategy for reducing noise and vibration problems. Design enhancements in structural components can be predicted and optimized for NVH. NVH testing helps validate changes in engine structure stiffness and assess acoustic improvements. Coupled with simulations
Kamble, Pranit, Baviskar, Shreyas, Ghale, Guruprasad, Chatterjee, Dipankar, Prabhakar, Shantanu, dhobale, Vishwajeet, Bendre, Parag, Thakur, Sunil, Kunde, Sagar
Dynamic Prime Mover Management for Enhanced Energy Efficiency in Electric Tractors2026-26-0185To be published on 01/16/2026
Electric tractors present unique opportunities for efficient power management by decoupling traction and auxiliary loads. In the proposed system, two independent electric motors are employed: one dedicated to vehicle traction and the other to drive the power take-off (PTO) and hydraulic functions, including steering and auxiliary attachments like loaders. Hydraulic flow demand directly impacts operational productivity; traditionally, hydraulic flow is linked to engine speed, requiring frequent manual adjustments. This paper proposes an innovative dynamic control strategy that optimizes motor speed based on real-time application demands, introducing three distinct modes: Low Idle Mode, Loader Mode, and PTO Mode. The Vehicle Control Unit (VCU) at the heart in coordination with the Farm Machinery Control Unit (FMCU) and Motor Control Unit (MCU), dynamically selects the appropriate mode based on user inputs such as PTO activation and joystick controls Low Idle Mode minimizes energy usage
Natarajan, Saravanan, P, Shanmugavel, M, Rojer, Joshi, Priyanka, sundaram, Pavithra
Combustion noise quality improvement in a common rail Diesel Engine at Low idle for Agriculture Tractor2026-26-0329To be published on 01/16/2026
Vehicle level NVH performance plays major role in customer comfort criteria. Tractor low idle rpm Sound Quality can be one of the parameter which influences customer purchasing decision based on comfort criteria. Modern diesel engines with stringent emission norms together with fuel economy requirements pose challenges to noise control. Common rail engine technology has advantage of precise fuel delivery and combustion control which needs optimization to achieve the conflicting requirements of noise, emission and fuel efficiency. Engine noise at low idle condition is dominated by combustion noise which depends on rate of pressure rise inside the cylinder during combustion. The important parameters which influence cylinder pressure rise are fuel injection timing, pilot injection quantity and its separation, rail pressure and EGR valve position. The study is carried out to understand which combustion parameter is most influencing to achieve better sound quality of engine. Taguchi design
p, Priyadarshan, Chavan, Amit, A, Kannanswamy, Patil, Sandeep, Chaudhari, Vishal V
Tractor Clutch wear simulation by Inhouse development2026-26-0572To be published on 01/16/2026
To develop an accelerated Clutch test simulation method at inhouse laboratory as System level of validation to replicate field phenomena in short time with controlled repeatability and increased test accuracy. Wet clutch is one of the M&M technology project for higher hp(75) tractors. Currently Mahindra having dry clutch system in higher hp tractors & presently Wet clutch development in progress for higher HP tractors for increasing clutch life & to reduce clutch pedal operation as per customer requirement, hence new test rig to be developed for validating new tractor wet clutch system as per RWUP. Previously tractor clutch system is completely evaluated through field testing on tractor level. Thus, there are several drawbacks in field testing like more waiting time to avail seasons, more testing time, evaluation of limited number of samples, non-availability of complete tractor on time, less accuracy, less repeatability of test results, unsafe conditions of rider, higher human fatigue
D, Yashwanth, Raja, R, Udayakumar, S, M, Jeevaharan, Vijayakumar, Narayanan
Streamlined Methodology for E-Motor Performance Evaluation using a configurable Universal Inverter2026-26-0510To be published on 01/16/2026
Electric motor benchmarking is often constrained by limited availability of motor-specific data, particularly when dealing with commercially available or third-party electric motors. This paper presents a streamlined and scalable methodology for characterizing unknown eMotors using a configurable universal inverter platform. The proposed approach is specifically designed for OEMs and Tier 1 suppliers seeking to evaluate performance metrics such as torque accuracy, peak and continuous capability, efficiency, and control behaviour—without prior access to key motor parameters or simulation data. A central challenge in this context is the stepwise electromagnetic characterization required to determine the phase current needed for accurate speed and torque control, especially under a Maximum Torque per Ampere (MTPA) or Maximum Torque per Watt (MTPW) strategy. As this requirement is highly dependent on the motor’s topology and electromagnetic properties, most conventional approaches rely on
Kanya, Benjamin, Duchi, Francesco, Ravi, Abhishek
Drive Cycle Type Identification Using Data Driven Methodologies2026-26-0649To be published on 01/16/2026
Identifying the type of drive cycle is crucial for analyzing customer usage and optimizing vehicle performance and emission control. Methods that rely on geographical location are limited by varying driving conditions at the same location (e.g., heavy traffic during peak hours vs. free-flowing traffic at night). This paper proposes a methodology to identify the type of drive cycle (city, interurban, highway or others) using drive characteristics derived from vehicle data rather than geographical location. Real-world vehicle data from testing trucks is taken, whose drive profiles are already known. Initially, multiple characteristic features of the drive cycle are identified from literature surveys and domain experiences. These features, which can be extracted from basic signal data, include gear shifts, time spent in different driving modes (acceleration, cruise, standstill), velocity distributions, and an 'aggressiveness factor' representing overall driving style. Using ML based
REDDY, MALLANGI PRASHANTH, Gorain, Raju, Ganguly, Gourav
Performance Evaluation and Optimization of Engine Brake System using Chassis Dynamometer2026-26-0511To be published on 01/16/2026
Engine braking is a deceleration technique that leverages the internal friction and pumping losses within the engine. By closing the throttle and potentially selecting a lower gear, the engine creates a retarding force that slows the vehicle. This practice contributes to better fuel economy, decreased brake system load, and improved vehicle handling in specific driving scenarios, such as steep declines or slippery road surfaces. To alleviate stress on their primary braking systems and prevent overheating, heavy vehicles frequently incorporate engine-based braking. While older trucks relied on simple exhaust brakes with a butterfly valve to restrict exhaust flow, these had limited impact. Hence contemporary heavy vehicles almost exclusively use more advanced engine braking technologies. Traditionally, our heavy-duty vehicles use Exhaust brake system to elevate the braking performance on hilly terrains. Hence an improved sample of Engine brake was developed for enhanced braking
M, Vipin Prakash, Rajappan, Dinesh Kumar, R, Suresh, N, Gopi Kannan
Analysis and Optimization of Stick-Slip Behaviour in Metal-Plastic Interfaces for Connected Tail Lamp Assemblies in Electric Vehicles2026-26-0332To be published on 01/16/2026
The seamless and sleek design of connected tail lamps adds a visually striking element to the car's exterior. It aligns with contemporary automotive trends and gives the vehicle a premium and futuristic appearance. Automakers use these lamps as a design signature to establish brand identity. Connected tail lamps improve visibility for drivers behind the vehicle. The assembly of connected tail lamps can pose several challenges, especially due to their complex design and integration requirements. Metal-plastic creak is a common concern in electric vehicles (EVs), often noticeable when driving on uneven roads. This primarily results from stick-slip behaviour at the interface of metal and plastic components, intensified by improper alignment. When the designed geometric dimensioning and tolerancing (GD&T) is not met in real manufacturing conditions, misalignment introduces unintended contact forces, leading to intermittent micro-sliding and frictional energy release, which manifests as an
MICHAEL STEPHAN, NAVIN ESTAC RAJA, C M, MITHUN, Mohammed, Riyazuddin
Development of a Fuel Injector Driver for Accelerated Testing2026-26-0564To be published on 01/16/2026
This paper presents the design and development of a cost-effective fuel injector driver for accelerated testing of injectors. The driver accurately simulates injection patterns across various vehicle operating conditions. It can be programmed with injection maps for different engines, test cycles as per part drawings, predefined engine running cycles, and manual control where the frequency and duty cycle of PWM pulses are user-defined. The device can also be operated remotely via a Wi-Fi access point. This setup played a pivotal role for rapid comparative analyses among different suppliers, aiding in the final product selection. Accelerated testing was performed under various operating cycles, with performance evaluations done periodically. Conducting such tests at the vehicle level or on engine test benches would involve significant time and cost. However, the rapid development of the microcontroller-based test setup enabled quick initiation and completion of testing in a short span
Bhatt, Pancham, Agrawal, Adheesh, Kuchhal, Abhinav
Virtual Powertrain Development and Calibration methodology: The Role of Model-in-the-Loop in Calibration and Testing of EV power Train integrated with real road simulation tools.2026-26-0472To be published on 01/16/2026
The automotive industry has witnessed significant advancements in powertrain development over recent years, with further evolution expected in the near future. Modern vehicle propulsion systems now encompass a broad spectrum, including fully electric vehicles, plug-in hybrid models, mild 48V hybrid powertrains, and traditional internal combustion engine vehicles. This growing variety demands extensive engineering efforts for development and testing across different powertrain configurations. To facilitate the simultaneous advancement of multiple powertrain technologies while keeping costs manageable, optimizing calibration and testing processes is crucial. A combination of cutting-edge simulation techniques and state-of-the-art testing equipment offers an effective solution, introducing innovative testing methodologies that streamline the development of sophisticated propulsion architectures. This paper explores the implementation of Model-in-the-Loop (MIL) testing as a key methodology
Elumalai, Elakkia, P, SahayaSurendiraBabu, S, Sivashankar, J, Frederick Royston, S, Gowtham
Self-supervised diagnostics & prognostics framework for predictive maintenance in electric vehicles2026-26-0673To be published on 01/16/2026
Predictive maintenance is essential for enhancing the reliability, safety, and operational efficiency of connected vehicles. However, traditional supervised learning approaches for fault prediction depend heavily on large, labeled datasets of failure events, which are often scarce and expensive to obtain in real-world automotive environments. This paper proposes an original self-supervised anomaly detection framework that predicts emerging failures using only healthy operational data, eliminating the need for explicit failure labels. The approach employs self-supervised pretext tasks, such as masked signal reconstruction and future telemetry prediction, to learn robust representations of normal multi-sensor behavior (e.g., temperature, pressure, current, vibration). An unsupervised anomaly detection model then identifies deviations from these learned patterns. This integrated with data-informed predictive models enable early detection of faults across critical subsystems such as
Kumar, Pankaj, Deole, Kaushik, Hivarkar, Umesh
Mitigating Air Flow Sensor Signal Variability to Optimize Engine Operation in Passenger Cars2026-26-0512To be published on 01/16/2026
The need for advanced engine control systems has grown significantly in response to stricter emission regulations and increasing consumer demand for fuel-efficient passenger vehicles. Accurate estimation of intake air flow, coupled with precise fuel control, is essential to overcoming the challenges associated with modern gasoline engine performance. Hot-wire type mass air flow (MAF) sensors are commonly used for measuring intake air flow and are typically mounted on the clean side of the air intake system to protect them from contamination and extend their operational life. Reliable air flow measurement depends on maintaining a consistent and uniform flow across various engine speeds and load conditions. However, the optimal placement of the MAF sensor is often limited by engine packaging constraints, making sensor positioning a critical factor. Incorrect installation can result in inaccurate air flow readings, which negatively impact engine performance and emissions. During the
SONONE, SAGAR DINESH, Kale, Vishal, Kolhe, Vivek M
Evaluation of critical ignition coil parameters for an application On naturally aspirated gasoline engines2026-26-0589To be published on 01/16/2026
Today’s internal combustion engines require highly efficient combustion systems to meet stricter emission and fuel economy regulations. To fulfil to these requirements the ignition system of a gasoline engine plays a critical role. Along with ensuring that it meets the ignition characteristics across all engine operating conditions, it is also possess challenges like to comply with certain On-Board Diagnostics (OBD) norms .To meet these demands modern gasoline engines use inductive type ignition coils which are directly installed at the cylinder head above the spark plug. These ignition coils generate high voltage to produce a certain amount of spark energy and primary coil current which are necessary to meet the targets. However, it has been observed that in a traditional inductive type ignition coil system the ignition coil operating temperature can be a major limiting factor as it cannot exceed a maximum upper limit. The work described in this paper details the various systematic
Ghadge, Ganesh Narayan, Hosur, Viswanatha
Manufacturing process advancement in CNG Exhaust Valve to prevent seat wear issue2026-26-0278To be published on 01/16/2026
Exhaust Valve CNG market share increased in India in recent years demanding for more durable and reliable CNG Engine. While in current scenario durability is one of the major concerns for CNG engine. Major issue faced in CNG powertrain is high wear at Exhaust valve CNG face due to excessive wear. In Current practice T400 Sintered material layer is deposited at Valve face which is very critical to achieve less wear at valve face. Due to manufacturing variability high level of variation is found mechanical properties of T400 deposit which is very critical for Exhaust Valve CNG performance. In this paper all important process parameters are discussed for achieving consistent Exhaust Valve CNG T400 deposit quality. Each process parameter detail impact on T400 material is studied and explained to achieve consistent quality of T400 deposit leading to robust design of Exhaust Valve CNG.
Poonia, Sanjay, KUMAR, CHANDAN
Contradictions of Automotive NVH with other Vehicle Performance and TRIZ tools for Innovative problem solving2026-26-0347To be published on 01/16/2026
For safety towards Automotive engineering often faces design contradictions, particularly in Noise, Vibration, and Harshness (NVH) optimization. Traditional approaches rely on trade-offs, but TRIZ (Theory of Inventive Problem Solving) offers a structured methodology to resolve contradictions innovatively. This paper explores in depth the TRIZ-based solutions for 2 key NVH challenges: (1) exhaust systems requiring noise reduction while maintaining low engine back-pressure, (2) engine mounts requiring both softness for vibration isolation and hardness for durability& vehicle stability. By applying principles such as segmentation, dynamization, parameter change, cheap short living objects or mechanics substitution, the novel solutions are proposed to achieve superior performance without traditional compromises. Tuneable valves in the path of the exhaust gas flow and the power-train mounting focused on its Torque Roll Axis were shown to exemplify the TRIZ problem solving effectiveness
A, Milind Ambardekar
Corrosion behavioral study of Sintered materials with Ethanol-Blended Fuels - E20 and E852026-26-0277To be published on 01/16/2026
The increasing adoption of ethanol-blended fuels, such as E20 (20% ethanol and 80% gasoline) and E85 (85% ethanol and 15% gasoline), necessitates a comprehensive understanding of their compatibility with automotive engine components to ensure durability and operational reliability. Fuel compatibility is particularly critical for components in direct contact with ethanol-rich fuels, as improper material selection or insufficient testing can lead to corrosion, material degradation, and compromised engine performance. This study focuses on evaluating the behaviour of sintered materials extracted from potential fuel-contact parts of automotive engines when exposed to E20 and E85 fuels. Testing was conducted in accordance with the SAE J1747 standard, which provides a systematic approach for assessing corrosion resistance and material degradation in fuel environments. Following the exposure tests, post-test evaluations included visual inspection to identify surface changes and Scanning
Karthikeyan, C., Venugopal, Sivakumar, Gopalan, Vijaysankar
Optimizing Diesel Emission Controls through Advanced Software techniques to improve Diesel Oxidation Catalysts efficiency2026-26-0061To be published on 01/16/2026
After the implementation of BS VI emission standards, effective exhaust after-treatment has become critical in minimizing harmful emissions from diesel engines. One significant challenge is the accumulation of hydrocarbons (HC) in the Diesel Oxidation Catalyst (DOC). Certain hydrocarbons may adsorb onto the catalyst surface yet remain unreactive, leading to potential operational inefficiencies. This phenomenon necessitates the desorption of unreactive hydrocarbons to allow space for more reactive species, thereby enhancing oxidation efficiency and overall catalyst performance. The process of desorption (DeSorb) is vital to maintaining the balance of reactive hydrocarbons within the DOC. When a vehicle is idling or low temperature duty cycles, unburnt fuel produces hydrocarbons that accumulate in the DOC. Upon acceleration, these hydrocarbons can lead to an uncontrolled rise in temperature, resulting in DOC push-out, catalyst damage, and downstream impacts on the Diesel Particulate
K, Sabareeswaran, K K, Uthira Ramya Bala, k, Janarthanan, A, Ravikumar, YS, Ananthkumar
Controls Solutions for Commercial Hydrogen Engines2026-26-0112To be published on 01/16/2026
India’s commitment to carbon neutrality is significantly shaping the future architecture of commercial vehicle powertrains. While the use of CO₂-free technologies such as battery-electric drivetrains has already been successfully demonstrated across various applications, challenges related to limited range and the lack of high-power charging infrastructure continue to hinder widespread adoption, particularly for productivity-critical commercial vehicles. This has shifted the spotlight toward sustainable fuels, which offer the advantage of fast refueling times. Among these, hydrogen internal combustion engines (H₂ ICE) have gained increasing attention in recent years. In regions such as the European Union, the primary motivation for hydrogen is CO₂ reduction. In contrast, for markets like India, hydrogen also presents a strategic opportunity for reducing dependency on fossil fuel imports. Over the past four years, AVL has carried out multiple performance and emission development
Arnberger, Anton, Danninger, Alois, Mannsberger, Stefan, Breitegger, Bernhard
Multispeed EV Transmission – Gear Shift Simulation and Validation2026-26-0157To be published on 01/16/2026
The advancement of electric vehicle (EV) transmission systems is currently a prominent trend aimed at decreasing carbon emissions and providing eco-friendly transportation alternatives. Most of the EV transmissions are single speed, but research conducted on multi speed EV transmissions show higher efficiency, good performance, high speed and torque demand when compared with single speed counterparts. Most of the multi speed EV transmissions that are developed are of non-synchromesh type, which have direct effect on NVH, driving dynamics and durability of drivetrain components. Due to aforementioned factors, gearshift analysis becomes critical for development. Simulation model is developed at early development phase for initial feedback. Using the feedback, drivetrain can be optimized furthermore and test on physical parts can be conducted for final verification. This paper provides a simulation based approach for modelling non-synchromesh two speed EV transmission using Simulation X
Patel, Hiral, Thambala, Prashanth, Sutar, Suresh, Todtermuschke, Karsten
Reverse Engineering and Digital Twins in Powertrain Design: Enhancing Performance and Sustainability2026-26-0065To be published on 01/16/2026
This study explores the application of reverse engineering (RE) and digital twin (DT) technology in the design and optimization of advanced powertrain systems. Traditional approaches to powertrain development often rely on legacy designs with limited adaptability to modern efficiency and emission standards. In this work, we present a methodology combining 3D scanning, computational modeling, and machine learning to reconstruct, analyze, and enhance internal combustion engines (ICEs) and electric vehicle (EV) drivetrains. By digitizing physical components through RE, we generate high-fidelity DT models that enable virtual testing, performance prediction, and iterative improvement without costly physical prototyping. Key innovations include a novel mesh refinement technique for scanned geometries and a hybrid simulation framework integrating finite element analysis (FEA) and multi-body dynamics (MBD). Our case study demonstrates a 12% increase in thermal efficiency for a retrofitted ICE
Bernikov, Mark Alexandrovich, Kurmaev, Rinat
Unveiling the Dynamics of Methanol-Diesel Dual Direct Injection Compression Ignition Combustion: A Synergistic Experimental and Numerical Study2026-26-0110To be published on 01/16/2026
The pressing global need for de-fossilization of the transport sector, especially within the heavy-duty segment, has intensified the exploration of alternative clean fuels. While light-duty applications are rapidly transitioning towards electrification, the heavy-duty sector remains a challenging frontier due to its high-power demand and extended runtimes. In this context, methanol gained traction due to their renewable production pathways, carbon-neutrality, and are being highly promoted by the Indian government to reduce CO2 emissions by 1 billion tons by 2030. This study presents a comprehensive investigation into the dual direct injection compression ignition (DDICI) strategy using methanol as primary fuel and diesel as a pilot for ignition assistance. In contrast to spark-ignited premixed methanol engines, this strategy involves a diffusion combustion of the methanol flame, thereby eliminating the knocking issue and running with high compression ratios. The work benchmarks the
Emran, Ashraf, Dhongde, Avnish, Singh, Inderpal, Raut PhD, Ankit, Güdden, Arne, Berry, Sushil
Development of a CNG-Diesel Dual Fuel Tractor with Mechanical Fuel Injection System2026-26-0114To be published on 01/16/2026
Identification of renewable and sustainable energy solutions remains a key focus area for the engine designers of the modern world. An avenue of research and development is being vastly dedicated to propelling engines using alternate fuels. The chemistry of these alternate fuels is in general much simpler than fossil fuels, like diesel and gasoline. One such promising and easily available alternate fuel is compressed natural gas (CNG). In this work, a 3-cylinder, 3-liter naturally aspirated air-cooled diesel engine from the off-highway tractor application is converted into a CNG Diesel Dual fuel (CNG-DDF) engine. A comparative performance shows that the thermal efficiency is up to 5% lower with CNG-DDF with respect to diesel. However, it has shown the benefit of 44% in Particulate Matter (PM), while retaining the same NOx + NMHC levels as baseline diesel engine. The cycle average CO emission was found to increase by 40% simultaneously, which has been controlled by an oxidation catalyst
Choudhary, Vasu, Mukherjee, Nalini, KUMAR, SANJEEV, Tripathi, Ayush, Nene, Devendra
A study of Electric motor configuration for Multi Axle Electric Heavy Duty Commercial Truck Application to attain maximum potential of Torque vectoring2026-26-0084To be published on 01/16/2026
As the air pollution level rises around the globe, the need for alternative sources of energy increases, and this need is applicable to automotive industry also. Commercial vehicles are one of the major sources of air pollution around the world as they have impactful applicability in our day to day life. With growing advancement in mobility solutions, commercial vehicles are undergoing transformation to improve efficiency, safety and performance. One of the emerging technologies is of torque vectoring which is a concept used to provide better traction and stability to the vehicle in different driving conditions and used in the vehicle having multi motor configuration. Advance torque vectoring concept coupled with electric motor can react to dynamic driving conditions by providing instant torque. The concept of torque vectoring can be useful for heavy commercial vehicles used in off-road applications such as mining because torque vectoring helps in better weight management, cornering
Agarwal, Pranjal, Chaudhari, Gitesh, Gangad, Vikas, Penta, Amar
All New 1.2L Turbocharged Gasoline Direct Injection Engine from Tata Motors2026-26-0071To be published on 01/16/2026
A continuous stress on meeting stringent emissions regulations alongside rising consumer expectations for enhanced driving performance and refinement on powertrain applications on passenger cars. To address this customer aspirations Tata Motors has engineered the advanced 1.2L 3-cylinder turbocharged gasoline direct injection engine HYPERION. This next-generation powertrain is designed to maximize efficiency, lower emissions and deliver superior performance with improved noise, vibration, and harshness (NVH) characteristics. Key innovations includes highly optimized fuel injectors injector operating at 35 MPa, CVO-3 (3rd Gen Controlled Valve Operation), Miller Cycle with Electrically actuated VGT turbocharger and an AI-enabled engine management system, which collectively enhances efficiency and performance. The exhaust after-treatment system incorporates a Three-Way Catalyst (TWC) and an integrated Four-Way Conversion Catalyst (FWC+TM) for efficient emission control. The BS6 phase 2
Hosur, Viswanatha, Ghadge, Ganesh Narayan, Joshi, Manoj, Jadhav, Aashish, Panwar, Anupam
Engine and After-treatment optimization using Simulation tools2026-26-0057To be published on 01/16/2026
To achieve world-class engineering quality and reduce the effort and cost associated with conventional techniques, it is essential to incorporate digital validation during the development and validation phases. This research paper explores the methodologies and applications of advanced simulation tools for creating models of engines and their sub-components using MATLAB/Simulink, parameterizing these systems with AVL CruiseM, and operating them using ETAS Labcar-Operator. The paper provides an in-depth analysis of optimizing engine and after-treatment parameters, demonstrating their impact on performance and environmental compliance. It presents a series of simulation case studies that illustrate the effects of different parameter settings on the efficiency and emission levels of diesel passenger and commercial vehicle engines. These case studies highlight the overall workflow of model-based system development, emphasize various development milestones, and correlate these with actual
Shukla, Saurabh, Shilledar, Aneesh
Design and Optimization of Air Intake Manifold for 4cylinder 4valve Turbocharged CNG Engines: Enhancing Performance Metrics and Emission Compliance2026-26-0124To be published on 01/16/2026
This study presents the development and optimization of an air intake manifold for a 3-liter, 4-cylinder, 4-valve turbocharged engine operating on Compressed Natural Gas (CNG). The intake manifold plays a critical role in determining engine performance, directly influencing parameters such as power output, brake-specific fuel consumption (BSFC), and emissions. A systematic design methodology was adopted, starting with standard design repository, which were refined through iterative improvements focused on manifold volume, runner geometry, injector location, and fuel injection pressure. Computational Fluid Dynamics (CFD) simulations were conducted to evaluate the influence of manifold geometry and injector positioning on air-fuel mixing. The analysis assessed three potential injector locations: the tangential port, the swirl port, and a common upstream point where air splits into individual intake runners. Among these, the common upstream point consistently demonstrated superior air
Lomada, Balaji, Vasudevan, Sindhuja, RAVI, HARIKRISHNAN, N, Harish, UG, Remesh
Design and evaluation of Integrated Engine-Mounted Exhaust Aftertreatment and Air Intake Filtration System with CEV/TREM Stage-5 IC engine for off-highway applications2026-26-0144To be published on 01/16/2026
Conventional exhaust aftertreatment systems (ATS) and air intake filters are typically mounted separately on the vehicle chassis, leading to complex routing, significant packaging volume, thermal management challenges for the ATS, and increased assembly complexity. This paper presents a novel system integrating the air intake filter and the complete exhaust aftertreatment system (including DOC, DPF, SCR components as applicable) into a single unit mounted directly onto the engine. This engine-mounted integrated architecture significantly reduces system footprint, minimizes exhaust and intake piping lengths, potentially improves ATS thermal efficiency through close coupling, and simplifies vehicle assembly. Design considerations, including vibration isolation, serviceability, and potential performance benefits such as reduced pressure drop and faster catalyst light-off, are discussed. This integrated approach offers a compelling solution for optimizing packaging space and system
P U, Balaji, sivasankaran, Siva, Arputharaj, Jeba, Kumar, Lingesh, Pandian, Teja, Patil, Shankar
The viability of Ammonia in the Automotive sector: Challenges and Opportunities2026-26-0128To be published on 01/16/2026
Ammonia has become an attractive alternative fuel for automotive use because of its high energy density, carbon-free combustion, and possibility of sustainable production. The work examines the viability of ammonia as a fuel for internal combustion engines (ICEs) and fuel cells in automotive applications. Ammonia presents a number of benefits, such as being capable of being produced from renewable energies and having the possibility to diminish reliance on fossil fuels. However, disadvantages such as ammonia's lower energy content per volume, NOx emission possibility, and need for engine adjustment remain significant challenges. The paper covers the combustion characteristics of ammonia and how it behaves in traditional ICEs and in emerging fuel cell technology. It also addresses the necessary infrastructure for the production, storage, and distribution of ammonia to be used in automotive applications. Through comparative testing and comparison with conventional fuels by experimental
Jadhav, Ajinkya, Bandyopadhyay, Debjyoti, Sutar, Prasanna S, Sonawane, Shailesh Balkrishna, Rairikar, Sandeep D, Thipse, Sukrut S
Development of high BMEP natural gas engine with knock mitigation2026-26-0121To be published on 01/16/2026
The stringent emission norms over the past few years have driven the need to use low carbon fuels and after treatment technology. Natural gas is a suitable alternative to diesel for heavy duty engines with applications in power generation and transportation sectors. Stoichiometric combustion mode offer the advantages of complete combustion and low carbon dioxide emissions. The combination of turbocharging and cooled exhaust gas recirculation (EGR) technology enhances the power density along with reduced exhaust emissions simultaneously. However, there are several constraints in the operation of natural gas spark ignition engine such as exhaust gas temperature (EGT) limit of 750 °C, sufficient before turbine (BT) pressure for EGR drivability, boost pressure (2.5 bar), peak cylinder pressure limit and knocking. These limits may restrict the brake mean effective pressure (BMEP) of the engine. In the present study, tests were conducted on a V12, 24 litre, dedicated heavy duty natural gas
Khaladkar, Omkar, Marwaha PhD, Akshey
Ethanol Blended Diesel Fuel: Solution towards Carbon emission reduction and Sustainable Heavy Duty Transportation2026-26-0126To be published on 01/16/2026
Government of India has set up an ambitious net zero carbon emission target by 2070 in COP 26. To meet this target and to ensure energy security and energy sustainability, emphasis is being made to phase out petroleum derived fuels i.e. petrol, diesel etc. through sustainable alternatives. With all the environmental concern of diesel fuelled vehicles, it is a challenge to phase out them completely specifically from Heavy duty application due to their inherent attributes of high torque, efficiency and high range. Therefore, most pragmatic solution lies in reduction of carbon emission through fuel intervention and retain the characteristics of diesel fuelled vehicles. Efforts are under progress to explore the possibility of utilization of ethanol as blend in diesel fuels. This research work is focus on development and evaluation of ethanol blended diesel fuel in heavy duty engines. The ethanol and diesel are not miscible naturally so suitable agent was developed to make homogeneous
Mishra, Sumit Kumar
Key Parameters for Turbocharger selection & experimental validation for Off-Highway Applications2026-26-0104To be published on 01/16/2026
Customers in off-highway industry are increasingly seeking high-performance capabilities for their tractors due to increasing penetration of mechanisation and labour scarcity. One effective solution to achieve enhanced performance is turbocharging of engines, while meeting emission and highly dynamic transient response of tractor field applications. The process of selecting and validating a suitable turbocharger for tractor field application suitability is significantly time and resources consuming activity due to extensive testbed and field trials. This study focuses on the selection of turbocharger for tractor engines through analytical calculations to freeze key parameters like lambda, boost pressure ratio & temperature within boundaries of exhaust temperature and turbo efficiency maps to deliver best field transient performance and fuel consumption. The selected parameters are further validated under real-world transient operating conditions, involving tractors and their implements
RAWAT, SAURABH, KUMAR, HARISH KUMAR, Singh, Amarinder, Singh, Sachleen, Dogra, DaljitSingh
Flex-Fuel Technology for India: Challenges, Opportunities, and Compliance with Emerging Emission Norms2026-26-0109To be published on 01/16/2026
The adoption of flex-fuel vehicles (FFVs) in India presents a significant opportunity to reduce dependence on fossil fuels, lower greenhouse gas emissions, and ensure compliance with the country’s evolving emission norms. This paper explores the key aspects of flex-fuel technology in the context of Indian four-wheeler regulations, particularly Bharat Stage VI and potential future norms. The study begins with an overview of flex-fuel technology, detailing its advantages and associated challenges. A critical focus is placed on blend identification techniques, which play a vital role in optimizing combustion efficiency and ensuring seamless transitions between different ethanol-gasoline blends. Furthermore, the impact of ethanol blending on various fuel properties is examined, including changes in energy content, latent heat of vaporization, octane number rating, and stoichiometric air-fuel ratio. These factors significantly influence engine performance and emission characteristics
Balasubramanian, Karthick, KR, Prabhakar, KALLAHALLI SOMU, SANTHOSH KUMAR
An In-Depth Exploration of the Evolution and Global Adoption of Electric Motors in New Energy Vehicles2026-26-0161To be published on 01/16/2026
In recent years, the global automotive sector has undergone a transformation at an unprecedented pace, driven by rapid technological advancements and evolving consumer expectations. Central to this shift has been the accelerated adoption of electric motors as the primary propulsion mechanism in New Energy Vehicles (NEVs). This research paper explores the technological trajectory of electric motor development across four vehicle segments: two-wheelers, three-wheelers, passenger vehicles, and heavy-duty commercial vehicles. It identifies the leading electric motor technologies utilized in each of these segments, along with their prevalence across key regulated global markets. Drawing upon historical data and existing academic literature, the paper provides a comprehensive overview of current e-motor technologies and their market distribution. A regional analysis is conducted to examine variations in manufacturer preferences and deployment strategies, supported by visual representations
SINGH, ASHISH, Ray, Rakesh Kumar
Analysis and optimization of noise and vibrational performance of an e-axle2026-26-0340To be published on 01/16/2026
As the electric mobility landscape evolves, there is a growing emphasis on addressing the Noise, Vibration, and Harshness (NVH) challenges associated with electric drivetrains. The absence of an IC engine in EVs shifts the focus to other noise contributors such as gear meshing, electric machine operation, and structural vibrations. Despite the known influence of micro-geometry on gear dynamics, current optimization practices often rely on empirical adjustments or standard guidelines without fully utilizing advanced computational methods to predict and optimize NVH performance. There exists a pressing need for a systematic approach to analyse and optimize gear micro-geometry to reduce noise and vibration in high-speed e-axle applications. This research aims to bridge that gap by investigating the relationship between micro-geometry optimization and NVH characteristics of an e-axle. Through detailed modelling and optimization techniques, this research aims to identify optimal gear micro
Ankit, Priyadarshi, KULKARNI, KRISHNA, Momin, Vaseem
Design of the BIW structure for battery pack protection in case of side pole impact.2026-26-0025To be published on 01/16/2026
Electric vehicles (EVs) are becoming more popular than Internal Combustion Engine (ICE) powered vehicles, but their battery and motor components elevate their Gross Vehicle Weight (GVW), posing unique collision risks. Manufacturers strategically mount the high voltage (HV) battery packs under the passenger compartment to lower the Centre of Gravity and shield them from the front impacts. However, side impacts remain a concern, as the battery deformation in such instances could trigger fires or explosions, endangering occupants. To address this, crashworthiness designs adhere to New Car Assessment Program (NCAP) standards, particularly against side pole impact and side mobile barrier impact. Unlike the frontal section of BIW, which typically has larger crush space to absorb the crash energy, extensive design attention is required to the vehicle's side structure to absorb pole impacts without transmitting excessive force to the battery pack. Utilizing aluminium extrusions and sheet
Nivesh, Dharun, NAMANI, Prasad, Ramaraj, Rajasekar
Material Compatibility Studies of Ethanol Blended Diesel2026-26-0129To be published on 01/16/2026
The Government of India has mandated biofuel blending in automotive fuels to reduce crude oil imports and support the national economy. As part of this initiative, Oil Marketing Companies (OMCs) have begun nationwide blending of E20 fuel (20% ethanol in petrol). Ethanol supply is expected to exceed demand by the end of 2025 due to initiatives like the Pradhan Mantri JI-VAN Yojana (ethanol from waste grains). Alternative applications for ethanol are being explored; one promising approach is its use as a co-blend with diesel fuel. However, ethanol’s low cetane number and poor lubricity present challenges for direct use in diesel engines without modifications. This study explores ethanol diesel (ED) blends for unmodified diesel engines. ED blends demonstrated reduced emissions while maintaining performance comparable to conventional diesel. To further address concerns related to materials compatibility of ED blends with fuel system components, particularly plastomers (e.g., hoses, seals
Johnpeter, Justin P, Chakrahari, Kiran, Chakradhar, Maya, Arora, Ajay, Prakash, Shanti, Pokhriyal, Naveen Kumar
REPLACING DIESEL ENGINES WITH CNG ENGINES – IMPACT ON EMISSIONS, BASED ON CHASSIS DYNAMOMETER TESTS OF MEDIUM AND HEAVY-DUTY BUSES2026-26-0127To be published on 01/16/2026
Abstract This paper compares carbon dioxide, carbon monoxide, methane and nitrogen oxide emissions from medium and heavy-duty buses using diesel, diesel-hybrid, and CNG powertrains. Comparisons are made using results from chassis dynamometer-based tests with driving cycles intended to simulate a wide range of operating conditions. Tail pipe emissions are measured by diluting the vehicle exhaust in a full-scale dilution tunnel by mixing with conditioned air. Samples are drawn through probes of raw exhaust, diluted exhaust and measured using laboratory grade emission analyzers. Emissions measurements include carbon dioxide, carbon monoxide, nitrogen oxides, and hydrocarbons including methane. Fuel consumption for liquid fuels is measured using weighing scales, while a gas flow meter is used for measuring CNG. Experimental data from 20 buses tested on a chassis dynamometer over the last 8 years is analyzed and a comparison of results from similar buses but with the differently fueled
Iyer, Suresh
Data analysis -Driven Calibration Enhancement for Alternative Fuel Engine Start2026-26-0123To be published on 01/16/2026
In the pursuit of improving cold-start performance in alternate fuel vehicles, data analysis has become a cornerstone for driving informed calibration decisions. Cold start is very critical for flex fuel vehicles since it has higher latent heat of vaporization and lower vapor pressure compared to gasoline. Ethanol blend fuels deteriorate engine starting at low ambient temp. This case study highlights how pivot table based analytics were effectively employed to enhance engine start strategy during the development of small commercial vehicle running on E20 and E85 fuel blends. The approach showcases how structured data interpretation can significantly support development work in Flex Fuel calibration. The analysis concentrated on various critical engine start events such as first crank success, failure to start, battery voltage behavior, and post-start stability across a range of coolant temperatures, particularly below 20°C. Real-world test data was segmented using data analysis based
Undre, Shrikant, Kulkarni, Deepak, Thonge, Ravindra, Upadhyay, Rajdip
EVALUATION OF DRIVELINE NVH PERFORMANCE USING LINEAR DYNAMIC FINITE ELEMENT SIMULATION2026-26-0322To be published on 01/16/2026
Automotive driveline design plays an important role in the NVH characteristics of the overall vehicle. Driveline systems are an integral part of delivering torque from the engine/transmission to the tires which propel the vehicle and drivelines often experience a wide frequency of excitation which poses unique NVH challenges. With the increasing trend in the automotive industry to introduce turbocharged engines with fewer cylinders while delivering the same torque / power, the driveline systems are excited with increased lower frequency torsional vibration in addition to other vibrations transmitted from powertrain and road. In this paper, we address the key design consideration for developing an optimal driveline system with consideration to NVH while keeping durability and other functional requirements in perspective. We consider the example of a front wheel drive-based vehicle architecture with independent suspension. The effect of fundamental prop shaft frequency to determine
JOSHI, ATUL KAMALAKARRAO, Subramanian, MANOJ
A practical approach to reduce Gear Whine noise through gear Tooth contact analysis in an Agricultural Tractor2026-26-0345To be published on 01/16/2026
Customer demand for comfortable tractors has gone multi-fold in last decade. Transmission gear whine noise as one of the major sources of noise, is an important factor influencing the perceived quality of a vehicle and customer comfort. Investigations were carried out on 57HP tractor reported with high whine noise during deceleration from high speeds to low speeds. The source of whine noise is identified through order analysis as spiral bevel gear. Mitigating spiral bevel gear whine noise is always a challenge because of geometry, tooling and assembly requirements. Tooth contact analysis was performed on the spiral bevel gear for simulating the meshing of gear teeth to determine factors like contact patterns, transmission errors, and load distribution. From tooth contact analysis the root cause for high deceleration noise was identified as the motion transmission was not smooth in entry and exit for both forward and reverse. A practical approach of microgeometry optimization was
P, Bharath, p, Priyadarshan, Janarthanan, Devakumara Raja, Chavan, Amit
Optimizing Powertrain Performance: A Customer Usage-Centric Approach2026-26-0067To be published on 01/16/2026
The optimization of new generation trucks is crucial for enhancing performance, efficiency, and compliance with regulatory standards. In the conventional product development, the manufacturer often optimises the powertrain to meet the stringent emission which might not account for the customer usage. This study uses the simulation-based approach that integrates customer usage with help of logged vehicle data across various applications, to develop a single engine platform equipped with multiple drivetrain options. Using a data driven approach, real-world usage pattern analysis is conducted to identify key performance metrics required to optimize the driveline components tailored to each application. Additionally, the impact of certification requirements on vehicle performance is examined to ensure compliance while maximizing the benefits of the proposed optimization strategies. The findings of this research will provide valuable insights for manufacturers and fleet operators, enabling
Mohan, Vignesh, Darzi, Mahdi
Resolution of Automotive Air Compressor Noise in Low Powered ICE vehicle2026-26-0314To be published on 01/16/2026
Passenger compartment's interior noise and thermal performance are one of the essential criteria for the driving comfort of vehicles. This paper explains that how the AC compressor noise is optimized in specific to low powered 1 L - ICE engine and 120 cc IVDC compressor combination. This combination is quite challenging due to high operational load & higher operating pressure. For better in-cabin cooling efficiency, compressor operating efficiency to be improved which in turn leads to higher displacement of the compressor. Higher displacement will lead to higher internal forces which leads to more structure borne induced noise in-side the cabin. For this specific combination, the compressor operating pressure reached to 25 bar at most of the driving condition. During dynamic driving condition, compressor metallic tonal noise was reported in one of the A segment vehicle developments. It was reported as very annoying to inside passenger. Transfer Path Analysis, Compressor fixation point
John Britto, Vijay Antony, Maluganahalli-Dharmappa Madhusoodan Sr, 1Lt Madhusoodan, Natarajasundaram, Balasubramanian
An Engineering Perspective on Cradle and Saddle Mount Configurations2026-26-0313To be published on 01/16/2026
The evolution of electric vehicles (EVs) demands optimized powertrain mounting systems to achieve superior Noise, Vibration, and Harshness (NVH) performance. This study presents a comparative evaluation of cradle-type and saddle-type mounting systems in EV applications. Experimental modal analysis and vehicle-level vibration testing were conducted to assess structure-borne and airborne noise transmission across operating conditions. Key factors such as mount stiffness, isolation efficiency, and dynamic load distribution were analyzed. Cradle systems exhibited better low- to mid-frequency isolation, whereas saddle systems offered advantages in packaging flexibility, high-frequency noise control, and reduced load distribution on supporting structures. These findings provide valuable guidance for selecting optimal mount strategies to enhance occupant comfort and acoustic quality in future EV designs. Recommendations for mount system improvements considering evolving EV architectures are
Hazra, Sandip, more, Vishwas, Naik, Sarang Pramod
Analysis and Mitigation of Parasitic Noise in Hydraulic Engine Mounts: Addressing Cavitation and Membrane Hitting2026-26-0335To be published on 01/16/2026
Hydraulic engine mounts are widely used in automotive applications to reduce vibration and noise transmission from the engine to the vehicle body by providing high damping at low frequencies and low damping/stiffness at higher frequencies. This is achieved by allowing sufficient clearance between components inside the hydro mount, activating hydraulic damping only with sufficient amplitude inputs. However, this inherently leads to the generation of Parasitic noises emanating from hydraulic engine mounts which significantly degrades the Noise, Vibration, and Harshness (NVH) performance of vehicles, presenting a considerable challenge in the automotive industry. This encompasses phenomena such as cavitation, arising from the formation and subsequent collapse of vapor bubbles within the working fluid due to localized pressure drops below the vapor pressure, and membrane hitting, resulting from the dynamic interaction between the fluid and the elastic membrane within the mount. Both noise
Agrawal, Adheesh, Vineeth, Sekharan, Saxena, Akshansh, Ghosh, Chiranjit, Seenivasan, Gokulram, Nandal, Abhishek, Dhankhar, Dinesh Singh
Adaptive Control Algorithms for Active Mounts on Diesel Powertrains in Passenger Cars2026-26-0324To be published on 01/16/2026
Diesel powertrains are inherently characterized by high vibration levels and low-frequency excitations, which are extremely demanding for passenger comfort and vehicle refinement. Conventional passive engine mounts often fall short in mitigating such vibrations effectively across a wide range of operating conditions. Passive mounts are inadequate for effectively isolating vibrations in powerful, lightweight vehicles or those without a balancer shaft 3-cylinder engine ordiesel engines. Consequently, this has prompted the consideration of active engine mounts as an alternative solution for solving NVH (Noise, Vibration, Harshness)-related issues. This paper explores the application of adaptive control algorithms in active engine mount systems for diesel powertrains in passenger vehicles. Through the integration of real-time feedback loops with smart control strategies the system adaptively controls mount stiffness and damping to minimize engine-induced vibrations. The study presents
Hazra, Sandip, Khan, Arkadip Amitava, more, Vishwas
Model Predictive Control and Fault Diagnosis for IPMSM EV Traction Drive2026-26-0070To be published on 01/16/2026
This paper introduces an advanced Model Predictive Control (MPC) scheme for Interior Permanent Magnet Synchronous Motor (IPMSM) traction drive, integrating Maximum Torque per Ampere (MTPA) and Field Weakening (FW) strategies supported by precomputed reference tables. This paper focus on MTPA that ensures the high operational efficiency as it selects the smallest current vector reference by using the reference tables for the desired torque and speed. FW that allows operation at higher speeds increasing the operating range. The MPC strategy that has been used in this paper controls the stator currents while considering the voltage vectors capability of the inverter to control torque and flux. The real time faults are injected in the simulation to test the system. Additionally, the system is made fault tolerant by activating Freewheeling and active short circuit. The performance of PI controller and MPC with respect to wide speed operation and torque ripples are compared in this paper
Valluru, Praneetha, Tendulkar, Swati, Birajdar, Santosh, Gandhi, Nikita, Naik, Anil, Peruka, Mahesh
Experimental Evaluation of Metro Rail Bogie Frame through Bench Testing2026-26-0561To be published on 01/16/2026
Bogie frame is a main skeleton and structural member in railway system which is carrying all the loads such as Suspensions,Axles,wheels, car body, Motor, Gear box etc. The frame is subjected the exceptional and service stresses in Vertical, Longitudinal, Lateral and twist directions throughout the service life which should be withstand for a life span of 30 years without failure. The purpose of this project is to determine the Structural integrity of the Metro rail bogie frame in consideration with EN13749 standard .This paper is the outcome of bench testing of metro rail bogie frame with the application of multiaxial loading in static and dynamic campaign through which stress data is collected with strain gauge sensors and correlated with the FEA results at design stage. This helps to verify and evaluate the design and validate the quality of metro rail frame as per the requirement specified in EN13749 European standard in early design stages.
Tormal, Uday Bapurao
Impact of Virtual ECUs on Software Development and Validation Using the Shift Left Strategy2026-26-0681To be published on 01/16/2026
The automotive industry is undergoing a transformative shift with the integration of Virtual Electronic Control Units (vECUs) in software development and validation processes. Physical ECUs require actual hardware setups, which can be expensive, time-consuming to configure, and may not be readily available during early development stages. This abstract presents the application of a Level 3 vECU to enable early-stage testing in alignment with the Shift Left Strategy, thereby reducing development time and cost. The developed vECU includes production-intent code for the Application Software (ASW), Runtime Environment (RTE), Basic Software (BSW), and Operating System (OS), while adapting the Microcontroller Abstraction Layer (MCAL) and Complex Device Drivers (CDD) for the virtual environment. The vECU replicates the functional behavior of a physical ECU and supports standard automotive communication protocols such as CAN, LIN, Ethernet and FlexRay, allowing system-level validation in a
Bhopi, Amey, Sengar, Bhan
Development of Flex fuel Vehicle for Indian Market2026-26-0117To be published on 01/16/2026
This paper presents the methodology and outcomes of modifying a 1.2L naturally aspirated (NA) engine to enable flex-fuel compatibility, targeting optimal performance with ethanol blends ranging from E20 to E93. The road map for Ethanol Blending released by Govt of India call for progressively increase in ethanol blending in gasoline, with a target of 20% by April 2025. Ethanol is promoted as a renewable fuel due to its potential to reduce greenhouse gas emissions and provides an additional source of income for farmers. This work is in alignment with the broader push for development of flex-fuel vehicles, which necessitates engine adaptations capable of operating on varying ethanol blends. The primary objective was to retain the performance with E20 while mitigating the fuel consumption penalties when the vehicle is operating on higher ethanol concentrations upto E93. The engine upgrade incorporated key modifications, including optimizing the compression ratio, implementing Variable
Tyagarajan, Sethuramalingam, Pise, Chetan, Kavekar, Pratap, Agarwal, Nishant Kumar
Enhancing Engine Reliability Testing with IoT, AI and ML: Real-Time ML-based Limit Monitoring and Predictive Maintenance with IoT sensor2026-26-0647To be published on 01/16/2026
The integration of Internet of Things (IoT), Artificial Intelligence (AI), and Machine Learning (ML) has transformed various industries, offering substantial benefits. The application of these technologies in engine reliability testing has immense potential as they offer real-time monitoring and analysis of engine performance parameters. Engine reliability testing is vital for ensuring the safety, efficiency, and longevity of engines. Traditional methods are time consuming, expensive, and rely heavily on manual inspection and data analysis. This paper shows how IoT, AI and ML technologies can greatly enhance the efficiency of engine reliability testing. The paper includes the following case studies: 1. ML-based Limit Monitoring for test data: With the help of machine learning models, we monitor the Engine health by comparing predicted and measured values during real-time testing. Intelligent algorithms predict and compare values, detect anomalies, and identify root causes in real-time
Yadav, Sanjay Kumar, kumar, prabhakar, R, Dinesh, Joon, Sushant, Rai, Ayush, Tripathi, Vinay Mani
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