725, 730, 735, 740 and 740 EJECTOR Articulated Trucks Power Train Electronic Control System Caterpillar


Controlled Throttle Shifting Function

Usage:

725 AFX
可控油门换档功能用于换档平顺和减小自动变速箱换档过程中的传动系应力。 在每次变速箱换档过程中,变速箱/底盘 ECM 通过 CAT 数据链路向发动机 ECM 发送一个信号。 该信号可减少或增加燃油流量。 这将减小换档过程中的扭矩。

在自动升档过程中,变速箱/底盘 ECM 向发动机 ECM 发送一个信号。 该信号用于暂时减小"发动机理想转速"。

在自动降档过程中,变速箱/底盘 ECM 向发动机 ECM 发送一个信号。 该信号用于暂时增大"发动机理想转速"。

当以下任何条件为真时,取消可控油门换档功能。

  • 缓速器已启动。 对于 725 和 730 机器,缓速器由变速箱/底盘 ECM 控制。 对于 735 和 740 机器,缓速器由发动机 ECM 控制。

  • 行车制动器已启动。

  • 停车制动器已启动。

  • 变速箱保持已启动。

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