METHOD OF COMPENSATING FOR INJECTOR AGING
    3.
    发明申请
    METHOD OF COMPENSATING FOR INJECTOR AGING 审中-公开
    注射器老化的补偿方法

    公开(公告)号:WO2012148418A1

    公开(公告)日:2012-11-01

    申请号:PCT/US2011/034525

    申请日:2011-04-29

    Abstract: A method of controlling a fuel injector is provided. Engine speed is monitored. Engine torque output is monitored. It is determined if the engine speed is within one of a plurality of predefined engine speed ranges. It is determined if the engine torque output is within one of a plurality of predefined engine torque output ranges. One of a plurality of injector coking factors is assigned based on the determined predefined engine speed range and the determined predefined engine torque output range. A total injector coking factor is calculated based upon total operating time within each of the plurality of injector coking factors. A duration of a fuel injection is increased based upon the calculated total injector coking factor.

    Abstract translation: 提供一种控制燃料喷射器的方法。 监测发动机转速。 发动机转矩输出被监控。 确定发动机转速是否在多个预定的发动机转速范围内。 确定发动机扭矩输出是否在多个预定的发动机扭矩输出范围之一内。 基于所确定的预定义的发动机速度范围和所确定的预定义的发动机转矩输出范围来分配多个喷射器焦化因子中的一个。 基于多个注射器焦化因子中的每一个内的总操作时间计算总喷射器焦化因子。 燃料喷射的持续时间根据计算的总喷射器焦化因子而增加。

    ENGINE CONTROLLING EMISSIONS DURING TRANSIENT OPERATIONS
    5.
    发明申请
    ENGINE CONTROLLING EMISSIONS DURING TRANSIENT OPERATIONS 审中-公开
    发动机控制排放在瞬时运行

    公开(公告)号:WO2012047191A1

    公开(公告)日:2012-04-12

    申请号:PCT/US2010/051260

    申请日:2010-10-04

    Abstract: A method of operating an engine is provided. Output of an engine speed sensor, a mass air flow sensor, an exhaust gas temperature sensor, and an engine torque estimator are monitored with an electronic control module. It is determined if the engine is operating in one of either a transient condition and a non-transient condition based upon output of at least one of the sensors and the torque estimator. Fuel injection timing is set based upon if the engine is operating in a transient condition. An exhaust gas recirculation valve position is set upon if the engine is operating in a transient condition. An intake throttle position is set based upon if the engine is operating in a transient condition. The fuel injection timing, exhaust gas recirculation valve position, and the intake throttle position are set to minimize NOx emissions when the engine is operating in a transient condition.

    Abstract translation: 提供了一种操作发动机的方法。 利用电子控制模块监视发动机转速传感器,质量空气流量传感器,排气温度传感器和发动机扭矩估计器的输出。 基于至少一个传感器和扭矩估计器的输出来确定发动机是否处于瞬态状态和非瞬态状态之一。 基于发动机是否在瞬态条件下运行来设定燃料喷射正时。 如果发动机在瞬态条件下运行,则设置废气再循环阀位置。 基于发动机是否在瞬态状态下操作,设定进气节气门位置。 燃料喷射正时,排气再循环阀位置和进气节气门位置被设定为当发动机在瞬态条件下操作时使NOx排放最小化。

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