Experimental and numerical investigations of close-coupled pilot injections to reduce combustion noise in a small-bore diesel engine
ABSTRACT A pilot-main injection strategy is investigated for a part-load operating point in a
single cylinder optical Diesel engine. As the energizing dwell between the pilot and main
injections decreases below 200 μs, combustion noise reaches a minimum and a reduction
of 3 dB is possible. This decrease in combustion noise is achieved without increased
pollutant emissions. Injection schedules employed in the engine are analyzed with an
injection analyzer to provide injection rates for each dwell tested. Two distinct injection …
single cylinder optical Diesel engine. As the energizing dwell between the pilot and main
injections decreases below 200 μs, combustion noise reaches a minimum and a reduction
of 3 dB is possible. This decrease in combustion noise is achieved without increased
pollutant emissions. Injection schedules employed in the engine are analyzed with an
injection analyzer to provide injection rates for each dwell tested. Two distinct injection …
[PDF][PDF] Experimental and Numerical Investigations of Close-Coupled Pilot Injections to Reduce Combustion Noise in a Small-Bore Diesel Engine.
A pilot-main injection strategy is investigated for a part-load operating point in a single
cylinder optical Diesel engine. As the energizing dwell between the pilot and main injections
decreases below 200 µs, combustion noise reaches a minimum and a reduction of 3 dB is
possible. This decrease in combustion noise is achieved without increased pollutant
emissions. Injection schedules employed in the engine are analyzed with an injection
analyzer to provide injection rates for each dwell tested. Two distinct injection events are …
cylinder optical Diesel engine. As the energizing dwell between the pilot and main injections
decreases below 200 µs, combustion noise reaches a minimum and a reduction of 3 dB is
possible. This decrease in combustion noise is achieved without increased pollutant
emissions. Injection schedules employed in the engine are analyzed with an injection
analyzer to provide injection rates for each dwell tested. Two distinct injection events are …
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