C32 Marine Engine Caterpillar


Throttle Position Sensor - Calibrate

Usage:

C32 AX2
如果表 1 中的诊断代码激活,采用此步骤。

表 1
诊断代码表 
代码和描述  产生此代码的状况  系统响应 
91-13 需要标定油门位置传感器   油门位置传感器信号的占空比低于5%或高于95%。   该诊断代码激活时,电子控制模块(ECM)将理想发动机转速设定为编程设定的低怠速。 该诊断代码激活时, Caterpillar 电子技师(ET)将会指示油门位置为 0%。 
1249-13 需要标定辅助油门位置传感器  

操作时,油门操纵杆系应无发卡或阻力过大现象。 需要使用 Cat ET 来对油门位置传感器进行标定。



图 1g01319129
典型实例

  1. 检查油门连杆是否损坏。

    1. 切断至发动机 ECM 的电源。

    2. 检查油门操纵杆系部件有无下列情况:

      • 松动

      • 弯曲

      • 折断

      • 丢失的

      • 磨损

      修理任何损坏的部件。

  2. 调整油门连杆以获得低怠速。

    1. 将 Cat ET 连接到维修工具接头上。

    2. 接通至发动机 ECM 的电源。 禁止起动发动机。

    3. 在 Cat ET上观察油门位置。

    4. 将油门操纵杆放在低怠速位置。 调整油门连杆或低怠速调整螺钉,直到 Cat ET 上的油门位置显示为 0%。

      当油门处于低怠速位置时,油门位置传感器的工作负载循环为 5% 至 10%。 ECM 将该 5% 至 10% 的工作负载循环转换为 0% 的油门位置。

  3. 调整油门连杆以获得高怠速。

    1. 将油门操纵杆放在低怠速位置。 调整油门连杆或高怠速调整螺钉,直到 Cat ET 上的油门位置显示为 100%。

      当油门处于高怠速位置时,油门位置传感器的工作负载循环为 90% 至 95%。 ECM 将该 90% 至 95% 的工作负载循环转换为 100% 的油门位置。

      将油门从低怠速位置调整到高怠速位置。 在 CatET上监测油门位置。 如果 Cat ET 上的油门位置不显示 0% 至 100% 的读数,再次执行该步骤。

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