• Pravin Neware
• Prof. Prashant Walke

The basic goals of the automotive industry; a high power, low specific fuel consumption, low emissions, low noise and better drive comfort. With increasing the vehicle number, the role of the vehicles in air pollution has been increasing significantly day by day. The environment protection agencies have drawn down the emission limits annually. Furthermore, continuously increasing price of the fuel necessitates improving the engine efficiency. Since the engines with carburetor do not hold the air fuel ratio close to the stoichiometric at different working conditions, catalytic converter cannot be used in these engines. Therefore these engines have high emission values and low efficiency. Electronic controlled Port Fuel Injection (PFI) systems instead of fuel system with carburetor have been used since 1980’s. In fuel injection systems, induced air can be metered precisely and the fuel is injected in the manifold to air amount. By using the lambda sensor in exhaust system, air/fuel ratio is held of stable value. Fuel systems without electronic controlled it is impossible to comply with the increasingly emissions legislation. The Direct Injection spark ignition (DISI) engines give a number of features, which could not be realized with port injected engines: avoiding fuel wall film in the manifold, improved accuracy of air/fuel ratio during dynamics, reducing throttling losses of the gas exchange by stratified and homogeneous lean operation, higher thermal efficiency by stratified operation and increased compression ratio, decreasing the fuel consumption and CO2 emissions, lower heat losses, fast heating of the catalyst by injection during the gas expansion phase, increased performance and volumetric efficiency due to cooling of air charge, better cold- start performance and better the drive comfort. Added to the problems of fast dwindling resources of petroleum fuels and political factors, associated with their procurement, environmental pollution is another major problem with the petroleum fuels. Thus, the global oil crises, environment degradation, economic factors and the total human life dependence on the non-renewable fossil fuels, have created serious concern for alternative fuel research. This in turn leads to search for alternative fuels that they themselves can produce. These alternative fuels preferably available from renewable sources. Therefore, attention is mainly focused towards the fuel made from waste engine oil called as LDO. When light diesel oil (LDO) is added with methanol and ethanol in proper proportion so that its properties will remain nearly to that of diesel, then it behaves like biomass based fuels. Experimental results shown that diesel engine shows poor performance at lower compression ratio while running on LDO and its blends with diesel. Better performance of engine can be obtained.

Engine efficiency, Direct Injection spark ignition (DISI) engine, CO2 emissions, LDO, Biomass based fuels, engine performance, emission parameters, engine performance etc.

"Performance evaluation of Single Cylinder 4-Stroke electronically assisted Gasoline Direct Injection System –", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 1, page no.161-171, January-2021, Available :http://www.jetir.org/papers/JETIREK06040.pdf

"Performance evaluation of Single Cylinder 4-Stroke electronically assisted Gasoline Direct Injection System –", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 1, page no. pp161-171, January-2021, Available at : http://www.jetir.org/papers/JETIREK06040.pdf