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    Hybrid vehicle exhaust control strategy
    6.
    发明授权
    Hybrid vehicle exhaust control strategy 有权
    混合动力汽车排气控制策略

    公开(公告)号：US07792627B1

    公开(公告)日：2010-09-07

    申请号：US12423409

    申请日：2009-04-14

    申请人： Halim G. Santoso ,  Eugene V. Gonze ,  Bryan Nathaniel Roos ,  Brian Spohn

    发明人： Halim G. Santoso ,  Eugene V. Gonze ,  Bryan Nathaniel Roos ,  Brian Spohn

    IPC分类号： F01N3/30 ,  F02D41/26

    CPC分类号： F01N3/22 ,  B60K6/48 ,  F01N3/2013 ,  F01N3/30 ,  F01N13/107 ,  F01N2430/06 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2560/14 ,  F02D41/025 ,  F02D2200/0802 ,  Y02A50/2322 ,  Y02T10/26 ,  Y02T10/6221

    摘要： An emissions control method may include operating a hybrid vehicle in a first mode during which a combustion engine is off and an electric motor powers propulsion of the vehicle. An electrically heated catalyst (EHC) may be energized during the first mode. The method may further include determining an operating temperature of an additional catalyst in communication with exhaust gas from the combustion engine and operating the vehicle in a second mode after the first mode during which the engine powers propulsion of the vehicle. The engine may operate in a catalyst combustion mode during the second mode when the operating temperature is below a first predetermined limit. The catalyst combustion mode may include operating the engine at an air-fuel ratio of less than stoichiometry and injecting air into exhaust gas from the engine at a location before the additional catalyst to create an exothermic reaction within the additional catalyst.

    摘要翻译： 排放控制方法可以包括以内燃机关闭的第一模式操作混合动力车辆，并且电动机驱动车辆的推进。 电加热催化剂（EHC）可在第一模式期间通电。 该方法还可以包括确定与来自内燃机的排气相连通的附加催化剂的操作温度，并且在发动机对车辆的推进进行驱动的第一模式之后以第二模式操作车辆。 当操作温度低于第一预定极限时，发动机可以在第二模式期间以催化剂燃烧模式操作。 催化剂燃烧模式可以包括以小于化学计量的空燃比操作发动机，并且在额外催化剂之前的位置将空气从发动机喷射到发动机中以在附加催化剂内产生放热反应。