基于CPS信号评价内燃机怠速燃烧稳定性方法  

Method of evaluating idle speed combustion stability for an internal combustion engine based on CPS signal

作　　者：甄龙信[1] 安子军[1] 

机构地区：[1]燕山大学车辆与能源学院,河北秦皇岛066004

出　　处：《振动与冲击》2013年第11期80-82,88,共4页Journal of Vibration and Shock

基　　金：河北省科学技术研究与发展计划项目(10215602D);国家自然科学基金资助项目(51275442)

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方法。识别CPS信号的缺齿位置并对缺齿处零点进行补充;利用CPS信号计算曲轴角速度、角加速度;选择小波阈值去噪方法对角速度、角加速度进行滤波;分析角加速度参数及相应气缸压力参数间线性相关性。角加速度参数及气缸压参数之间为高度正相关,说明用CPS信号计算角加速度参数评价内燃机怠速燃烧稳定性方法是可行的。The method of evaluating idle speed combustion stability of an internal combustion engine 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 the missing teeth were supplemented.The crankshaft angular velocity and acceleration were calculated with CPS signal and then filtered with the wavelet threshold denoising method.The linear correlation between angular acceleration parameters and corresponding cylinder pressure parameters was analyzed.It was shown that the angular acceleration parameters are highly correlated with corresponding cylinder pressure parameters;the method with CPS signal to calculate angular acceleration parameters to evaluate idle speed combustion stability of an internal combustion engine is feasible.

关 键 词：内燃机 曲轴位置传感器信号 角加速度 怠速燃烧稳定性 

分 类 号：U464.12[机械工程—车辆工程] TB533+.2[交通运输工程—载运工具运用工程]