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Two Stroke Gasoline Direct Injection Strategy Optimization Using 1D and 3D Analysis Tool

College of Engineering Pune-Yuvraj Chavan, Chandrashekar Sewatkar
Published 2019-01-09 by SAE International in United States
A two-stroke engine is a type of internal combustion (IC) engine that completes the power cycle in one crankshaft revolution, which is half the number in comparison with four-stroke engine. Spark Ignition (SI) two-stroke engines are commonly found in the small power tools such as chain saw and scooter. While Compression Ignition (CI) engines are commonly used in large machines such as marine propulsion and electricity generator.Two-stroke engines have several inherent advantages over four stroke engines such as simple and compact design, high power-to-weight ratio, lower NOx emissions etc. The piston of the two-stroke reciprocating engine takes over valve functions in order to obtain a power stroke for each revolution of the crankshaft. The valve overlap period in case of two stroke SI engines is greater than four stroke SI engines; this loss of fresh fuel is called short-circuiting [1]. This accounts for major source of hydro-carbon (HC) emissions and increased specific fuel consumption in two stroke SI engines. Independent fuel supply system could easily reduce inherent disadvantages of higher hydrocarbon emissions and low fuel…
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Modeling and Simulation of Steady State Handling Characteristics of Formula Vehicle with Antiroll Bars

College of Engineering Pune-Amit Gupta, Suraj Jadhav, Ramchandra Mane
The Automotive Research Association of India-Kamalkishore Vora, Mohammad Rafiq Agrewale
Published 2019-01-09 by SAE International in United States
Antiroll bar plays an important role in rollover stability of the vehicle. But not only does it limit the vehicle roll during cornering, but also alters the lateral load transfer between the tracks, which in turn affects the cornering performance of the vehicle. This paper deals with the design and mathematical modeling of antiroll bars to reduce the body roll of the vehicle from 1.5°/g to less than 1.0°/g. Rear bar uses a conventional torsion type bar but the front anti roll mechanism is an unconventional antiroll bar using a rotating double cantilever mechanism. Mathematical modeling is done for pushrod rod actuated antiroll mechanisms to simulate its non-linear roll rates. Antiroll bars for front and rear are designed for the calculated stiffness. Finite Element Analysis of antiroll bar and its components is done and the mechanism is tested on the vehicle. Steady state tire model parameters are generated by curve fitting tire testing data into pacejka coefficients. Then the vehicle mathematical model is built and simulated in multi-body simulation tool CarSim for various steady state…
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The Effect of Cerium Oxide Nano Particles Fuel Additive on Performance and Emission of Karanja Biodiesel Fueled Compression Ignition Military 585kW Heavy Duty Diesel Engine

College of Engineering Pune-Milankumar Nandgaonkar
Army Base Workshop- Pune-Anil Varghese
Published 2018-09-10 by SAE International in United States
Global warming with stringent emission legislation along with the depletion of fossil fuel has given us an opportunity to find biodiesel as alternative to diesel fuel. Biodiesel has been widely accepted as comparable fuel to diesel in diesel engine. This is due to its renewable property, better lubricity, along with lesser gaseous emission as compared to diesel fuel. However, there is a major disadvantage in the use of biodiesel as it increases NOx emission. Fuel additive becomes one of the essential tools to overcome the drawback of biodiesel required to meet the international standard of performance and emission. In this study, the performance, combustion, and gaseous emission of CO, CO2, HC, NOx and PM including particle size number distribution characteristics, were compared for diesel, Karanja oil biodiesel, and Karanja oil biodiesel with Cerium Oxide Nano particles fuel additive, in a 12 cylinder, 585 kW, CIDI military diesel engine. The experimental result showed that engine performance with Karanja oil biodiesel with fuel additive increased by 5%, along with lower gaseous emission including 14% - 26% lower…
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Experimental Investigation of the Effect of Karanja Oil Biodiesel with Cerium Oxide Nano Particle Fuel Additive on Lubricating Oil Tribology and Engine Wear in a Heavy Duty 38.8L,780 HP Military CIDI Diesel Engine

College of Engineering Pune-Milankumar Nandgaonkar
C V R D E, DRDO, Chennai-S Suresh
Published 2018-09-10 by SAE International in United States
Biodiesel fuels are an alternative to diesel fuel. Biodiesel is an oxygenated, sulphur free, non-toxic, biogradable and renewable fuel. It is derived from vegetable oils. Since straight vegetable oils have quite high viscosity compared to mineral diesel, they have to be modified to bring their combustion-related properties and viscosity closer to mineral diesel. This is done by modifying their molecular structure through a transesterification process. In the present study, a military heavy duty 38.8 liter, 585 kW supercharged, compression ignition diesel injection (CIDI) engine was fuelled with diesel, Karanja oil methyl ester (KOME) biodiesel, and KOME biodiesel with cerium oxide fuel additive, respectively. These were subjected to 100 hours long term endurance tests. Lubricating oil samples, drawn from the engine fuelled with these fuels after a fixed interval of 20 hours, were subjected to elemental analysis. Atomic absorption spectroscopy was done for quantification of various metal debris concentrations. Lubricating oil samples were also subjected to ferrography test which indicated lower wear debris concentrations for a biodiesel with fuel additive operated engine. Number of tests was…
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Utilization of Man Power, Increment in Productivity by Using Lean Management in Kitting Area of Engine Manufacturing Facility - A Case Study

SAE International Journal of Materials and Manufacturing

College of Engineering Pune-Harshwardhan Rajeshkumar Vairagde
General Motors India Private Limited-Naresh Hans
  • Journal Article
  • 05-11-03-0020
Published 2018-08-08 by SAE International in United States
The project of lean management is implemented in General Motors India Private Limited, Pune, India plant. The aim of the project is to improve manpower utilization by removing seven types of wastes using lean management system in kitting process. Lean manufacturing or management is the soul of Just-In-Time philosophy and is not new in Automobile manufacture sector where it born. Kitting area is analogs to the modern supermarket where required components, parts, consumables, subassemblies are kept in bins. These bins are placed in racks so that choosing right part at right time can be achieved easily. Video recording, in-person observation, feedback from online operators and other departments such as maintenance, control, supply chain etc. are taken. It is observed that the work content performed by current strength of operators can be performed by less number of operators. After executing this project, it was possible to reduce one operator and increase manpower utilization. Continuous improvement is a part of lean management the organization is striving for it.
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Design, Analysis, Simulation and Validation of Automobile Suspension System Using Drive-Shaft as a Suspension Link

SAE International Journal of Passenger Cars - Mechanical Systems

College of Engineering Pune-Shubham Ramchandra Nehe, Ashay Ghogare, Shubham Vatsa, Lokesh Tekade, Shantanu Thakare, Prajakta Yadav, Pranav Shool, Pratik Wankhade, Vivekanand Dhakane, Satish Charjan
  • Journal Article
  • 06-11-02-0011
Published 2018-04-18 by SAE International in United States
With increasing demands for higher performance along with lower vehicle emissions, lightweight vehicle system construction is key to meet such demands. Suspension and transmission assemblies being the key areas for weight-reduction, we have designed a revolutionary new type of suspension system which combines the suspension links with the powertrain assembly and thus completely eliminates one suspension member. Less weight means lower fuel-consumption with improved passenger-comfort and road-holding due to reduction in unsprung mass. Elimination of a suspension link reduces the overall cost of material, machining & fabrication making our design cost-effective than existing setups. This article deals with the design and implementation of of our concept. A working prototype is also constructed and tested which completely validates our design. Our design has major benefits of ultralight-weight construction with reduced space requirement and component-count and improved serviceability.
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Development of Battery Management System for Hybrid Electric Two Wheeler

College of Engineering Pune-Yogesh Bagul
A R A I-Kiran Wani, Sanjay A Patil
Published 2018-04-03 by SAE International in United States
The use of Hybrid Electric Vehicles (HEV) will become imperative to meet the emission challenges. HEV have two power sources-fossil fuels driven I.C. Engine and the battery based drive. Battery technologies have seen a tremendous development, and therefore HEV’s have been benefited. Even as the battery capacities have improved, maintaining and monitoring their health has been a challenge. This research paper uses open-source platform to build a BMS. The flexibility in the implementation of the system has helped in the rapid prototyping of the system. The BMS system was evaluated on a scaled-down electric toy car for its performance and sustainability. The BMS was evaluated for reverse polarity, protection against overcharge, short-circuit, deep discharge and overload on lead acid battery. It also includes temperature monitoring of the batteries. This proposed system is evaluated on the in-house HEV two-wheeler. The initial results are promising. A dedicated android smartphone application is developed for BMS which continuously monitors battery voltage, current, battery temperature, battery state of charge (SOC) and battery health. The system measures current, voltage and temperature…
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Analysis of Types of Mufflers and a New Approach Using Resonating Chamber

College of Engineering Pune-Rajvardhan Nalawade
Published 2017-07-10 by SAE International in United States
The exhaust system of a vehicle is an integral part as it is responsible for reducing the noise of the exhaust gases and controlling the emissions as well. Mufflers are particularly the sub part of an exhaust system that reduce the sound level. Their geometry and size are meticulously calculated and decided so as to increase destructive interference of sound waves and their absorption by sound absorbent material packed around it. There are five types of basic mufflers which will be compared for their transmission losses. For this analysis of transmission losses, a software called Ricardo Wave Build has been used. Transmission loss is basically, the difference between the energy of the incoming charge and the energy of the outgoing charge of gases. So, more is the transmission loss, more efficient and productive is the muffler. Based upon the transmission loss characteristics, the mufflers are paired with their corresponding applications. Along with this, the concept of a resonating column is discussed. This is basically a chamber which helps in reducing sound by destructive interference and…
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Thermal Management and Sensitivity Study of Air Cooled SMPM Motor

College of Engineering Pune-Chandrashekhar Sewatkar
John Deere India Pvt. Ltd.-Bhupesh Agrawal, Mohit Varma
Published 2017-01-10 by SAE International in United States
High temperatures in the surface mounted permanent magnet (SMPM) synchronous motor adversely affect the power output at the motor shaft. Temperature rise may lead to winding insulation failure, permanent demagnetization of magnets and encoder electronics failure. Prediction and management of temperatures at different locations in the motor should be done right at the design stage to avoid such failures in the motor. The present work is focused on the creation of Lumped Parameter Thermal Network (LPTN) and CFD models of SMPM synchronous motor to predict the temperature distribution in the motor parts. LPTN models were created in Motor-CAD and Simulink which are suitable for parameter sensitivity analysis and getting quick results. Air is assumed to be a cooling medium to extract heat from the outer surface of motor. CFD models were useful in providing elaborate temperature distribution and also locating the hot-spots. Correlation models by both the methods, viz. LPTN and CFD, were generated. The effect of changing the motor orientation, magnitude of air inlet velocity, direction of air-flow and the effect of axial fins…
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Analysis of Parameters Affecting Liner Bore Distortion in DI Diesel Engines

College of Engineering Pune-Sujit Pardeshi
Kirloskar Oil Engines Ltd.-Usman Ali Mohammed, Nitin Gokhale, Uday Gokhale, M N Kumar
Published 2015-01-14 by SAE International in United States
The stringent emission norms and increasing demand for engines with higher power density lead to an extensive investigation of parameters affecting combustion performance. Recent emission norms have forced the engine manufacturers to reduce the Particulate matter (PM) emissions along with other emissions substantially. In order to achieve lo PM emissions the lubrication oil consumption need to be controlled by optimizing piston group design with low liner bore distortion.Bore Distortion is the deviation of actual profile from perfect circular profile at any plane perpendicular to axis of cylinder. Liner bore distortion in engines causes' number of problems like deterioration of piston ring performance, liner-ring conformability issues, high lubricating oil consumption and emissions. Besides traditional prediction of stresses, fatigue life and verification by mechanical testing, the prediction of liner bore distortion is one of today's most important topics in crankcase structure development. Low bore distortion opens up potential for optimized piston group design.The research work focuses on analyzing the parameters affecting liner bore distortion in DI Diesel engines. The study has been carried out on direct injection…
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