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阐述了发动机管理系统中加入随车诊断系统对控制排放的必要性 ,论述了OBD—Ⅱ系统对催化剂、失火、O2 传感器、燃油蒸发系统、燃油供给系统等的监测原理及可行控制方案。
The necessity of adding on-board diagnostic system to engine control system is expounded. The monitoring principle and feasible control scheme of OBD-Ⅱ system for catalyst, misfire, O2 sensor, fuel evaporating system and fuel supply system are discussed.