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Effects of Fuel Injection Timing on Performance Characteristics in Diesel Engine

A study on the combustion and exhaust emissions (Soot & NOx) of diesel engine with various fuel injection timing is performed experimentally.In this Paper, fuel injection timing is changed from BTDC 20°to 14°at 2°intervals, theexperiments are performed at engine speed 1800rpm and from load 25% to 100% at 25%intervals, and main measured parameters are cylinder pressure, rate of pressure rise, fuelconsumption rate, Soot and NOx emissions etc. The obtained conclusions are as follows (I) Cylinder maximum pressure is increased with leading fuel injection timing. (2) Specific fuel consumption is indicated the least value at BTDC 18°of foel injection timing. (3) Soot emission is decreased with leading fuel injection timine.(4) NOx emission is increased with leading fuel injection timing.