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권순익(S.L Kwon),김완(W. Kim) 한국자동차공학회 1993 오토저널 Vol.15 No.1
Fuel injection system is an important tool in the exhaust emission and perfonnance of a diesel engine. Effects of the fuel injection system in diesel combustion was investigated experimentally by measuring the performance and analyzing the combustion phenomena in a D.I. diesel engine. The selected injection parameters were nozzle hole diameter, nozzle opening pressure, nozzle projection length, and nozzle spray angle.<br/> From the measured results, it is shown that the fuel injection pipe diameter is an effective means to improve engine perfonnance in a middle and high speed range and the 2 stage spring nozzle holder has the advantage of increasing the engine perfonnance due to the initial injection pressure in a low speed range. It has been also shown that increasing nozzle opening pressure resulted in decrease in smoke, but increase in NOx from the engine.