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) 降档电磁阀 (3) 闭锁离合器电磁阀 |
对于要求直接驱动的档位,升档电磁阀 (1) 或者降档电磁阀 (2) 被停用后,必须启动闭锁离合器电磁阀 (3) 。 变速箱档位开关的位置和来自变速箱转速传感器的行驶速度信号被用来确定启用闭锁离合器电磁阀 (3) 的正确时间。
来自变速箱充油泵段的泵油使机油输送至闭锁离合器和同步阀。 泵油流经闭锁离合器和同步阀中的减压阀。 减压阀允许一些泵油通过滑阀流至先导油管。 先导油流向闭锁离合器和同步阀中的继电器阀。
闭锁离合器电磁阀 (3) 将信号油输送至闭锁离合器和同步阀中的继电器阀。 这允许先导油流经继电器阀。 然后,机油流向闭锁离合器和同步阀中的调节安全阀。 该调节安全阀可使泵油流向闭锁离合器。 闭锁离合器将处于直接驱动状态,直到信号压力被闭锁离合器电磁阀 (3) 消除。 当信号压力消除时,继电器阀中的滑阀阻断先导油。
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