| 摘要 |
A creep preventing device for vehicles equipped with an automatic transmission comprising: a fluid type torque converter; an auxiliary transmission which has a frictionally engaging element for starting, and which is coupled to said torque converter; and a creep preventing valve disposed in an oil path that is branched from an operation oil path leading to said frictionally engaging element and that leads to an oil tank, said creep preventing valve being adapted to open said oil path during the idle operation of the vehicle, wherein the creep preventing valve is constructed such that it is operated in the opening direction or the closing direction by the pressure of a source of hydraulic pressure. According to another aspect of the invention, furthermore, the creep preventing valve has an oil chamber which closes the valve when a hydraulic pressure greater than a predetermined value is introduced thereinto, and to said oil chamber is connected an oil path which guides a hydraulic pressure from means that produces a signal pressure proportional to the vehicle speed.
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