基于CPS信号评价内燃机怠速燃烧稳定性的方法

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (11) : 80-82.

论文

基于CPS信号评价内燃机怠速燃烧稳定性的方法

甄龙信，安子军

作者信息 +

Method of Evaluating Internal Combustion Engine Idle Speed Combustion Stability Based on CPS Signal

ZHEN Longxin，AN Zijun

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文章历史 +

摘要

提出利用CPS信号计算曲轴角加速度参数评价内燃机怠速燃烧稳定性的方法。识别CPS信号的缺齿位置并对缺齿处的零点进行补充，利用CPS信号计算曲轴的角速度和角加速度；选择小波阈值去噪方法对角速度和角加速度进行滤波；分析角加速度参数和相应气缸压力参数之间的线性相关性。角加速度参数和相应的气缸压参数之间为高度正相关，说明应用CPS信号计算角加速度参数评价内燃机怠速燃烧稳定性的方法是可行的。

Abstract

The method of evaluating internal combustion engine idle speed combustion stability by using CPS signal to calculate crankshaft angular acceleration parameters was put forward. The missing teeth position of CPS signal was distinguished and the zero points at missing teeth were supplemented. The crankshaft angular velocity and acceleration were calculated from CPS signal and then processed through wavelet threshold denoising method. The linear correlation between angular acceleration parameters and corresponding cylinder pressure parameters was analyzed. The angular acceleration parameters are highly correlated with corresponding cylinder pressure parameters，which proves that the method of using CPS signal to calculate angular acceleration parameters to evaluate internal combustion engine idle speed combustion stability is feasible.

导出引用

甄龙信;安子军. 基于CPS信号评价内燃机怠速燃烧稳定性的方法[J]. 振动与冲击, 2013, 32(11): 80-82

ZHEN Longxin;AN Zijun. Method of Evaluating Internal Combustion Engine Idle Speed Combustion Stability Based on CPS Signal[J]. Journal of Vibration and Shock, 2013, 32(11): 80-82