A multifuel, multispark assisted diesel engine (SADE) is developed. The combustion studies of the engine performance on ethanol fuel is presented. An investigation into the effect of multispark, variable spark duration on combustion variables and the engine performance is presented. This leads to the appropriate information concerning novel approaches to attaining a higher brake thermal efficiency and reducing exhaust emissions in future engines. This concept improves the operational limit, especially the lean limits of combustion of the developed engine. The results obtained showed that a SADE with a multispark discharge (MSD) ignitor and a variable spark duration has superior combustion characteristics to an equivalent conventional diesel engine in brake power, brake thermal efficiency, cylinder pressure, brake mean effective pressure, rate of cylinder pressure rise and cleaner exhaust. The engine developed a high brake thermal efficiency which makes its economy superior to the conventional SADE alcohol fueled and moderately turbocharged diesel in this category. The engine does not smoke and the overall performance makes it available for all spark compression ignition engine fuels including less volatile and self ignition resistant types of fuels.
Development of a Spark Assisted Direct Injection Multifuel Diesel Engine Especially for Alcohol Fuels
1989
85 pages
Report
Keine Angabe
Englisch
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