基于带通滤波的电控柴油机各缸不均匀性检测  

Detection of Cylinder Imbalance in Electronically-controlled Diesel Engine Based on Bandpass Filtering

作　　者：周泉[1] 王贵勇[1] 申立中[1] 

机构地区：[1]昆明理工大学,云南省内燃机重点实验室,昆明650224

出　　处：《汽车工程》2012年第9期825-829,共5页Automotive Engineering

基　　金：国家自然科学基金(61164008);云南省内燃机重点实验室开放基金(200901)资助

摘　　要：以YN30电控柴油机为研究对象,提出一种基于带通滤波的各缸不均匀性的检测手段。首先通过曲轴信号传感器获取发动机瞬时转速信号。然后经过低通滤波、重采样等处理后,以带通滤波的形式获取各缸不均匀性曲线。最后再以PI算法量化不均匀性,得到各缸具体所需修正的油量。With YN30 electronically-controlled diesel engine as the object of study, a detection method for the unevenness between different cylinders is proposed based on band-pass filtering. Firstly the instantaneous rota- tion speed signal of engine is picked up by crankshaft signal sensors. It is then processed by low-pass filtering and re-sampling, and the curves of unevenness between cylinders are obtained in the form of band-pass filtering. Finally the unevenness is quantified by PI algorithm to get the specific fuel correction required for each cylinder.

关 键 词：柴油机 各缸不均匀性 带通滤波 瞬时转速 

分 类 号：TK427[动力工程及工程热物理—动力机械及工程]