Speed Sensor (Transmission)
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图 1 | g01945104 |
CX35-P800(侧部 PTO 驱动装置) (1) 发动机输出转速传感器 (2) 变矩器输出转速传感器 (3) 变速箱行星齿轮输出转速传感器 |
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图 2 | g01945108 |
CX35–P800(整体式泵驱动装置) (1) 发动机输出转速传感器 (2) 变矩器输出转速传感器 (3) 变速箱行星齿轮输出转速传感器 |
CX35-P800 变速箱上有一个发动机输出转速传感器 (1) 、一个变矩器输出转速传感器 (2) 和两个变速箱输出转速传感器 (3) 。 所有转速传感器均用于确定单独的转速传感器是否发生故障。
每个转速传感器有两个连接至 ECM(+ 和 −)的接头。 对于所有转速传感器,接头触点 "2" 是信号线,接头触点 "1" 是回路线。 转速传感器向 ECM 发送与每秒通过传感器的轮齿数相匹配的 AC 频率信号 (HZ)。 ECM 比较转速传感器的频率 (HZ) 与每转脉冲数,以确定旋转部件的速度。 ECM 利用来自转速传感器的输入调整变速箱档位。
正常工作时,转速传感器用于相互之间的交叉检查和诊断。 交叉检查使用两个变速箱输出速度和变矩器输出速度,以验证和确定使用哪个变速箱输出速度传感器来换档。 交叉检查比较三个速度。 如果至少有两个速度一致,则变速箱换档符合预期。 否则,禁用换档且分离锁定离合器。ECM 定期检查转速传感器的值,如果发现值不正确、不稳定或缺少值,ECM 将记录维修代码(转速传感器诊断),指示转速传感器回路存在故障。
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