文档介绍：设计计算研究
· · · ·
混合动力汽车用发动机起动振动
与噪声特性初步研究
张立军叶荫余卓平
同济大学
( )
针对某型混合动力汽车用发动机进行了冷起动条件下的振动与噪声试验测试了发动机机体振动加速
【摘要】,
度发动机噪声气缸缸压点火脉冲信号及转速信号分析了发动机起动瞬态过程中振动与噪声特性试验结果表
、、、, 。
明起动阶段的噪声与振动信号表现出明显的非稳态特征且幅值比怠速时大高频的振动与噪声和低频的气缸压
, , ;
力波动关系不大可能与拖动电机的高频转矩波动有关
, 。
主题词:混合动力汽车发动机起动振动噪声
中图分类号: 文献标识码:A 文章编号:1000-3703(2009)03-0028-04
Experimental Investigation Into Starting Noise and Vibration
of an Engine Used in Hybrid Electric Vehicle
Zhang Lijun,Ye Yin,Yu Zhuoping
(Tongji University)
【Abstract】Noise and vibration test in cold start condition was carried out for engine of a hybrid electric vehicle,
during this test engine block vibration acceleration,engine noise,cylinder pressure,ignition pulse signal and revolution
signal were measured,and engine starting noise and vibration characteristics were analyzed in the transient state of engine
test results indicate that the engine starting noise and vibration signal reveal distinct non -steady
characteristic,and the amplitude is greater than at idle speed;in addition,the high -frequency vibration and noise is not
closely related with fluctuation of cylinder pressure at low frequency,possibly correlated with fluctuation of high-frequency
torque that drives the motor.
Key words:Hybrid electric vehicle,Engine, Start,Vibration,Noise
动及点火后快速上升的发动机转矩并提出了可变
前言,
1 进气门正时延迟点火增加喷油量活塞初始位置