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Development of the combustion noise index and control algorithm through signal processing of in-cylinder pressure for a diesel engine
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 Title & Authors
Development of the combustion noise index and control algorithm through signal processing of in-cylinder pressure for a diesel engine
Jin, Jaemin; Lee, Dongchul; Jung, Insoo;
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 Abstract
To control and improve a combustion behavior of an engine, various studies for the in-cylinder pressure have been consistently carried out. In this paper, the level of the combustion noise for a diesel engine is estimated from the in-cylinder pressure and defined as the combustion noise index. The combustion noise index is calculated from the FFT(Fast Fourier Transform) of the in-cylinder pressure and its validity is verified. The control system based on the combustion noise index is developed and implemented in a vehicle. A number of injection parameters are controlled to meet the desired combustion noise index, and the combustion noise of a vehicle is improved up to 4.0 dB(A) in the specified frequency band.
 Keywords
Cylinder pressure;Combustion noise index;Fast Fourier transform;Feedback control;Heat release ratio;
 Language
Korean
 Cited by
 References
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