| 摘要 |
PROBLEM TO BE SOLVED: To control a three way solenoid valve at optional hydraulic pressure by communicating and connecting the three way solenoid valve to control hydraulic pressure by duty control to a manual valve to change over an oil passage by being interlocked with forwarding and reversing change-over of a select lever. SOLUTION: A manual valve 1 to change over an oil passage by being interlocked with forwarding are reversing change-over of a select lever is provided, and a three way solenoid valve 10 is arranged by communicating and connecting it to this manual valve 1. Additionally, this three way solenoid valve 10 is connected to an oil passage R having hydraulic pressure (line pressure) generated by an oil pump, and an orifice 11 is arranged between the oil passage R and the three way solenoid valve 10. This three way solenoid valve 10 magnetizes an inside coil by output voltage from a computer and is structured to change over a hydraulic circuit by sucking an inside plunger by magnetic force, and it is possible to control it by ON and OFF control, that is, to duty- control it at optional hydraulic pressure. |
