Investigation on Emission and Combustion with 100% Palm Kernel Methyl Ester as Fuel on VCR-DI-Diesel Engine  

作　　者：Veerla Joshua Jaya Prasad Pothula Ramesh Babu Velamala Rambabu 

机构地区：[1]Department of Mechanical Engineering, GMR Institute of Technology, Rajam 532127, Andhra Pradesh, India

出　　处：《Journal of Energy and Power Engineering》2012年第9期1416-1422,共7页能源与动力工程（美国大卫英文）

摘　　要：Methyl or ethyl esters of vegetable oils are the reliable alternative fuels for the petroleum diesel, because their properties are very nearer to the petroleum diesel. But the flash point and auto-ignition temperatures are very high for these esters. CR （compression ratio） is one of the parameter which influences the atomization and vaporization of fuel. It is also caused for improvement in the turbulence which leads to better combustion. In this work the single cylinder diesel engine was tested at different compression ratios i.e. 16.5：1, 17.5：1, 18.5：1, 19：1 with palm kernel methyl ester without modifications. On increasing compression ratio closeness of molecules of air increases and fuel is injected into that air caused for better combustion. The inbuilt oxygen of methyl or ethyl ester will participate in the combustion and causes for reduction of HC and CO. Better compression ratio for an engine with particular fuel provides satisfactory thermal efficiency and less environmental pollution. In the investigations, for palm kernel methyl ester, 18.5：1 compression ratio is preferable on single cylinder Dl-diesel engine.

关 键 词：PKME （palm kernel methyl ester） CR （compression ratio） VCR engine （variable compression ratio engine）. 

分 类 号：U473.2[机械工程—车辆工程] U464.172[交通运输工程—载运工具运用工程]