摘要
介绍一种使用宽域氧传感器进行发动机失火检测的方法,在发动机各工况下对该方法的有效性进行了实验研究,并研究了失火对排放的影响。实验结果表明:失火对发动机排放的影响显著,利用宽域氧传感器信号可以有效地检测发动机失火,该检测方法在发动机的高速区存在优势。虽然失火循环排出的气体到达宽域氧传感器有一定的延迟,但不会影响失火检测的结果。
In this study,a new concept of misfire detection in spark ignition engine using a wide-range oxygen sensor is introduced,and the validity of this method is studied in different engine working conditions.The effects of misfire on emissions are also studied.The results showed that a misfire could be diagnosed more clearly from normal combustion through the differentiation of the wide-range oxygen sensor signal,this method was even more useful for high speed zone.Although exhaust gas had a little delay from the moment of misfire to reaching wide-range oxygen sensor,this didn＇t affect the result of misfire detection.
出处
《小型内燃机与摩托车》
CAS
北大核心
2011年第1期1-5,共5页
Small Internal Combustion Engine and Motorcycle
基金
国家863计划"重型商用车CNG发动机产品开发"
关键词
失火
宽域氧传感器
检测
Misfire
Wide-range oxygen sensor
Detection
