直喷式柴油机燃烧压力振荡特性及其对燃烧噪声影响的研究

本文报告了对直喷式柴油机燃烧压力振荡特性及压力振荡对燃烧噪声影响规律的研究，并从理论与试验上研究了燃烧压力振荡的多模态特性及多模态的叠加特性。研究结果表明，通过减小缸内压力振荡可降低直喷式柴油机的燃烧噪声。

Investigation on Combustion Pressure Oscillation and Their Influence on Combustion Noise of D.I.Diesel Engines

The paper reports the results of an investigation of the characteristic of combustion pressure oscillation in a D.I.diesel engine and their effect on engine noise. The multi-order modes of different frequencies of combustion pressure oscillation and their superimposition were studied both theoretically and experimentally.The research results show that the engine combustion noise can be reduced by reducing the combustion pressure oscillation in combustion chamber.