Solenoid Valve (Lockup Clutch)
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| 图 1 | g00421143 |
变速箱液压控制装置 (1) 升档电磁阀 (2) 减档电磁阀 (3) 锁止离合器电磁阀 | |
对于那些需要直接传动的速度档，锁止离合器电磁阀 (3) 必须在升档电磁阀 (1) 或减档电磁阀 (2) 停止工作后启动。 变速箱档位开关的位置以及变速箱转速传感器发送的行驶速度信号会命令动力传动系电子控制模块在适当的时候启动锁止离合器电磁阀 (3) 。
停车制动器松放泵段会将机油泵送至变矩器锁止离合器和同步阀。 这些泵油会流经变矩器锁止离合器和同步阀中的减压阀。 这样就会将泵油转为控制油。 控制油流向变矩器锁止离合器和同步阀中的继动阀。 锁止离合器电磁阀 (3) 会向变矩器锁止离合器和同步阀中的继动阀输送信号油， 以便让控制油通过继动阀。 然后，该控制油流向变矩器锁止离合器和同步阀中的调节减压阀。 调节减压阀允许泵油流入锁止离合器。 锁止离合器会保持直接传动状态，直到锁止离合器电磁阀 (3) 上的油压消失。
Caterpillar Information System:
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