生物制气-柴油双燃料发动机的燃烧噪声  

Combustion noise of biogas-diesel dual fuel engine

作　　者：汤东[1] 来超峰[1] 胡正权[1] 罗福强[1] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2006年第5期409-412,共4页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50176016);江苏省教育厅自然科学基金资助项目(04KJD130043)

摘　　要：燃烧噪声对发动机的噪声有重要影响,从时域和频域两个方面对生物制气-柴油双燃料发动机的燃烧噪声进行了综合评价,计算出燃烧总声压级,与纯柴油发动机的相关数据进行了比较,分析了不同的供油提前角、负荷和转速对燃烧噪声的影响.结果表明:燃烧噪声随负荷及转速变大而变大;在相同负荷下供油提前角变大其燃烧噪声变大,燃用生物制气双燃料发动机比燃用纯柴油的燃烧噪声低约A声压级3 dB.The combustion noise is the main source of the noise of engine. The combustion noise of a biogas-diesel dual fuel engine is comprehensively evaluated with two aspects of time region and frequency region. The total combustion sound pressure level is caculated. The data of dual fuel engine are compared with those of diesel engine. The different fuel supply advance angle and load are analyzed for their effect to the combustion noise. The result shows that the combustion noise becomes larger with greater load. The combustion noise is larger with larger fuel supply advance angle at the time of the same load. At the same time the combustion noise of the dual fuel engine using biogas is lower about 3 dB than that of using pure diesel.

关 键 词：生物制气 双燃料发动机 燃烧噪声 声压级 柴油机 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]