增压发动机怠速敲缸噪声研究  

Research on Idle Knocking Noise of Turbocharged Engine

作　　者：冯圆[1] 杨瑞文[1] 陈红兵[1] 黄春生[1] 王勇[1] 

机构地区：[1]泛亚汽车技术中心有限公司,上海201201

出　　处：《车用发动机》2013年第3期75-78,83,共5页Vehicle Engine

摘　　要：通过研究某增压发动机的怠速敲缸噪声,总结了活塞总成系统的噪声分类,研究了活塞偏心量、连杆大头油孔以及活塞冷却喷嘴对怠速敲缸噪声的影响。研究结果显示,活塞偏心量和连杆大头的油孔对于改善怠速敲缸噪声有很好的效果,而活塞冷却喷嘴不仅能起到冷却活塞的作用,还对怠速敲缸噪声有决定性的影响。通过改变活塞冷却喷嘴的开启压力,在怠速时开启,可以完全消除怠速敲缸噪声。Based on the idle knocking noise of a turbocharged engine, the noise classification of piston assembly was summa- rized, and the influences of piston offset, connecting rod big end hole and piston oil nozzle on the idle knocking were re- searched. The results showed that the piston offset and connecting rod big end hole could improve the idle knocking effectively. The piston oil nozzle had decisive effect on improving the idle knocking noise besides cooling the piston. The optimized opening pressure of piston oil nozzle could eliminate the idle knocking noise.

关 键 词：增压发动机 怠速 敲缸 噪声 

分 类 号：TK411.6[动力工程及工程热物理—动力机械及工程]