摘要
讨论了汽油机瞬态工况的内涵,提出了瞬态工况下如何评价尾气排放量的问题,给出了二进制划分下符号树结构及其Shannon熵的计算方法。在3种试验汽油机分别处于冷起动、暖机和加速-滑行3种瞬态工况时,用符号树Shannon熵值对尾气中的HC和CO排放量评估。
The meaning of transient condition of engine is discussed. The question how to estimate the emission degree of tailpipe exhaust gas of engine in transient condition is put forward. The frame of symbolic tree and calculation method of Shannon entropy are presented depending on the binary partition. In three kinds of transient conditions which are cold start, warm car and acceleration-coasting, the HC and CO component signals of tailpipe exhaust gas from three kinds of gasoline engines of test cars are evaluated by the Shannon entropy value of symbolic tree.
出处
《车用发动机》
北大核心
2004年第3期26-31,共6页
Vehicle Engine
基金
国家自然科学基金资助项目(50176006)
