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Gopal, K Nantha
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Design and Development of a Dry Sump Lubrication System for a Formula SAE Race Car

VIT University-Rishabh Khanna, Akshyt Bimal Kumar, Kartik Vijaykumar, K Nantha Gopal, Ashok B, Sahil Sharma, Vignesh Ravi
Published 2019-01-09 by SAE International in United States
A Formula student team aims to develop and improve their designs every year, as far as the powertrain aspect is considered performance output and enhancement is the primary aim, and for engine to perform better, the health of the engine is the most important parameter; hence the lubrication system of the vehicles powertrain should be improved to get the most out of the engine. The primary challenge for the development of a new lubrication system was the inability to replicate the performance given by stock wet sump with the self-designed custom dry sump. However, the advantages can outnumber the cons of implementing a custom dry sump lubrication system. The work brought together in this paper highlights the meticulous design procedure for implementing a custom made dry sump system onto a 4-cylinder in-line Honda CBR600RR engine. Moreover, the research paper brings about the extensive process undertaken which includes theoretical calculations, computational analysis and experimental validation of the whole assembly the dry sump system. The design procedure makes use of software like MATLAB, Star CCM+ and SolidWorks.…
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Design and Development of a Restricted Intake Manifold for a Naturally Aspirated Four Cylinder SI Engine

VIT University, Vellore-Aman Agarwal, Umashankar Lath, Saksham Bhardwaj, K Nantha Gopal, Ashok B, Akshyt Bimal Kumar, Rishabh Khanna
Published 2018-07-09 by SAE International in United States
Intake manifold is one of the principal components of the engine system in the vehicle. The air intake manifold is the passage for air into the engine and thus affects the amount of air quantity. The objective of the present work is to design and development of a strong, reliable and light weight intake manifold for a multi cylinder spark ignition engine. The developed manifold will improve the airflow intake and provide equal mass flow rate in all runners to create better performance. In the present work, combinations of 1-D modeling using Ricardo Wave and CFD simulations on Star CCM+ were employed to substantiate the modeling. The designed manifold is ensured to have a throat velocity of the restrictor close of Mach 1and the plenum was simulated to have a zero velocity creating maximum pressure close to atmospheric pressure. The necessary structural strength to the intake manifold was ensured by performing FEA simulations using ANSYS software. Rapid Prototyping Technique was selected to avoid any disruption in the fluid flow and vortex formations among which Selective…
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Tribological Characteristics of Zinc Diakyldithio Phosphates Blended with Pongamia Biodiesel

VIT University-ANIL P M, K Nantha Gopal, B. Ashok
Published 2017-07-10 by SAE International in United States
The present research deals with study of pongamia oil methyl ester as a lubricant by blending with anti-wear additive ZDDP. The experimental work carried in this work aims to investigates the friction and wear characteristics by blending zinc diakyldithio phosphates (ZDDP) with pongamia oil methyl ester as lubricant under various loading conditions and temperatures. The coefficient of friction and wear scar depth were determined using pongamia biodiesel blended with 0.3%, 0.6% and 1 % ZDDP by concentration through high frequency reciprocating wear testing machine for 2 h duration. The reciprocating wear tests were performed on an engine liner-piston ring contact under the loads of 40 N, 60 N and 80 N for 2 h duration at temperatures of 100°C, 125°C 150° C with 10 Hz oscillation frequency. The addition of ZDDP with pongamia biodiesel showed marginal reduction in friction coefficient and wear scar depth under all loads and temperatures. The coefficient of friction was found to be higher in the initial stages due to running-in for all testing conditions. In addition, the SEM images of…
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Analytical Investigation of Fan Shroud on a Thermal Heat Exchanger for Automotive Applications

VIT University-K Nantha Gopal, B. Ashok, Rishabh Bahuguna, Tanmay Prasad
Published 2017-07-10 by SAE International in United States
Thermal management is one of the most challenging and innovative aspects of the automotive industry. The efficiency of the vehicle cooling framework unequivocally relies upon the air stream through the radiator core. Significant advances in thermal management are being embraced in the field of radiator material and coolant. The radiator shouldn't be exclusively credited for the reliable cooling of the engine. There are other auto parts that play an essential role in keeping engine temperature at a manageable level. The fan-shroud assembly is an important component of the cooling system. While the fan is responsible for drawing in air, the fan shroud's job is to ensure uniform air distribution to the radiator core. By assisting airflow in the engine compartment the fan shroud helps in dismissing excess heat from the engine. This assembly also prevents the recirculation of heated air through the cooling fan. This paper endeavors to bring forth a new design and an improvement in the cooling system ubiquitous in the new era of modern engineering. An iterative process has been undertaken to…
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Structural Analysis of Electric Vehicle Transmission - Mounts and Casing for Different Materials

Kumaraguru College of Technology (KCT),-C Kavitha
VIT University-Shishir Sirohi, Saurabh Yadav, B. Ashok, V Ramesh Babu, K Nantha Gopal
Published 2017-07-10 by SAE International in United States
The main objective of the study is to design and analyze casing and supports of a transmission system for an electric vehicle. The system comprises of motors as the power source, constant mesh gear box coupled with limited slip differential as the power transmitting source. The space occupied by the transmission system is a foremost constraint in designing the system. The wear and tear in the system is caused by the gear meshing process and transmission error which lead to failure of the transmission system. This internal excitation also produces a dynamic mesh force, which is transmitted to the casing and mounts through shafts and bearings. In order to overcome such issues in a transmission system, a gear box casing, differential mounts and motor mounts have been designed by the use of CAD-modeling software “SOLIDWORKS”. The designs were imported to FEA software “ANSYS” for carrying out static structural analysis. Static analysis is performed to determine the deformation, Von-Mises stresses, and Factor of Safety of the aforementioned models. The analysis is carried by applying various boundary…
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Design and Analysis of a Fuel Preheating Device for Evaluation of Ethanol Based Biofuel Blends in a Diesel Engine Application

SAE International Journal of Engines

VIT University, Vellore, India-B Ashok, K Nantha Gopal, Thundil Karuppa Raj Rajagopal, Sushrut Alagiasingam, Suryakumar Appu, Aravind Murugan
  • Journal Article
  • 2017-26-0073
Published 2017-01-10 by SAE International in United States
With the alarming increase in vehicular population, there is depletion of fossil fuel availability. Hence to overcome the difficulties, alternative fuels are tested and used in parts of the world. One of the difficulties with usage of alternate fuels is their high viscosity in comparison to fossil fuels. To overcome this, preheating of biofuel is a good option as it makes the fuel less viscous. In our research, we have used a helical coil heat exchanger to preheat the inlet fuel using the engine’s exhaust gas, making the system more sustainable since no external energy is used. In order to evaluate the effectiveness of preheating device a simulation study has been carried for the ethanol based biofuels. For simulation work, a set of boundary conditions has been arrived based on the experimental analysis. The results from the experiment such as velocity of air and fuel inlet were utilized as input for simulation work. The simulation study was carried out using Fluent solver, to compare the effectiveness of proposed preheating device for the ethanol blends (E20…
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