| 摘要 |
PURPOSE:To dispense with a special setup space as well as to make reaction hydraulic pressure controllable according to gear generation pressure, by installing a solenoid throttle valve which controls the throttling of a flow of pressure oil branched off to the side of a pressure chamber by a divided flow control valve according to a car speed. CONSTITUTION:A flow control valve 61 controlling flow Qo of discharged pressure oil out of a feed pump 60 to be driven by an automobile engine consists of a metering orifice 62 and a bypass valve 64 to constant flow, and is connected to the high pressure side of the valve 61 through a divided flow control valve 65. And, a control spool 67 provided with a control throttle 66 dividing a flow of pressure oil of the constant flow Q is fitted in a spool hole 65a of this valve 65, and a passage 46 of a reaction chamber 55 is interconnected to a reservoir via a solenoid throttle valve 70. With this constitution, when a car speed is slow, no current is fed to this valve 70 so that it comes into a state of being fully opened, thus reaction hydraulic pressure is kept in low pressure and airy wheel operation is performable.
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