Engine idling duration control
    10.
    发明授权
    Engine idling duration control 有权
    发动机怠速持续时间控制

    公开(公告)号:US08397489B2

    公开(公告)日:2013-03-19

    申请号:US12208212

    申请日:2008-09-10

    IPC分类号: F01N3/00

    摘要: Systems and methods are described for controlling an engine in a vehicle. One example method includes, after a threshold duration of engine idling, continuing engine idle operation when an exhaust NOx sensor indicates a NOx level below a NOx threshold, and stopping engine idle and shutting down the engine when the exhaust NOx sensor indicates the NOx level is above the NOx threshold. In this way, when the exhaust emissions are below the NOx threshold, it is possible to prolong engine idling operation using the exhaust NOx sensor.

    摘要翻译: 描述了用于控制车辆中的发动机的系统和方法。 一个示例性方法包括:当排气NOx传感器指示NOx水平低于NOx阈值时,在发动机怠速的阈值持续时间之后继续发动机怠速运转,并且当排气NOx传感器指示NOx水平时停止发动机怠速并关闭发动机 高于NOx阈值。 以这种方式,当废气排放低于NOx阈值时,可以使用排气NOx传感器来延长发动机空转操作。