Variable Injection Timing Effects on the Performance and Emissions of a Direct Injection Diesel Engine 932385

This paper describes the test of a direct injection diesel engine, operating electronically controlled diesel fuel unit injectors with variable injection timing. Diesel fuel injection was electronically controlled to retard or advance initiation of the injection event. Advancing or retarding injection timing of a direct injection diesel engine has a significant effect upon performance and emissions. Injection timing was varied to determine effects on exhaust emissions, performance, and fuel efficiency.


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