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    • 1. 发明授权
    • Turbocharged engine canister system and diagnostic method
    • 涡轮增压发动机罐系统及诊断方法
    • US08924133B2
    • 2014-12-30
    • US13406912
    • 2012-02-28
    • Christopher G. HadreRoger C. SagerPaul J. GregorRichard J. Carnaghi
    • Christopher G. HadreRoger C. SagerPaul J. GregorRichard J. Carnaghi
    • F02M25/08F02D41/22
    • F02M25/0809F02M25/0836F02M25/089
    • An evaporative emission control system for a turbocharged engine. The system includes a fuel vapor canister in fluid communication with an intake manifold of the engine, a purge valve positioned between the intake manifold and the canister, a bypass valve positioned between the purge valve and the canister and connected to the atmosphere, and an evaporative system integrity monitor operable to seal the canister from the atmosphere when the engine is off. In operation, the monitor is closed so as to seal the canister from the atmosphere, the purge valve is closed so as to isolate the intake manifold from the canister, and the bypass valve is opened so as to connect the canister to the atmosphere. Proper operation of the monitor is determined if the monitor toggles from closed to open when a vacuum in the fuel vapor canister reaches a predetermined level.
    • 一种用于涡轮增压发动机的蒸发排放控制系统。 该系统包括与发动机的进气歧管流体连通的燃料蒸汽罐,位于进气歧管和罐之间的清洗阀,位于吹扫阀和罐之间并连接到大气的旁通阀,以及蒸发器 系统完整性监视器可操作以在发动机关闭时从大气层密封罐。 在操作中,关闭监视器以将罐与大气密封,净化阀关闭,以将进气歧管与罐隔离开,并且旁通阀打开以将罐连接到大气。 当燃油蒸汽罐中的真空达到预定水平时,如果监视器从关闭状态切换到打开,则确定监视器的正确操作。