Improvements of Diesel Engine Combustion Noise and Performance by the Control of Dual Peak Heat Releases

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  • 熱発生率の双峰化によるディーゼルエンジン燃焼騒音の低減と性能改善
  • ネッパツセイリツ ノ ソウホウカ ニ ヨル ディーゼルエンジン ネンショウ ソウオン ノ テイゲン ト セイノウ カイゼン

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Abstract

Premixed diesel combustion is expected for the next generation vehicles, because of the high thermal efficiency and low NOx and PM emissions, but the reduction of the combustion noise, caused by the maximum rate of pressure rise, is an urgent issue for the practical use. The reduction of combustion noise by the two-stage fuel injection is a topic of this paper. With the simulations and engine experiments, the noise cancelling spike combustion was investigated and the reduction conditions of combustion noise were apparent.

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