| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a forward-backward travel clutch control device which can always stably perform starting operation superior in a feeling by pedal operation, without receiving influence of a dimensional difference in a part and a difference in an operation method. <P>SOLUTION: This forward-backward travel clutch control device is constituted so that an oil feed pressure of a forward travel clutch 35a or a backward travel clutch 35b can be controlled based on an operation angle detecting result of a clutch pedal O. Oil is fed under a predetermined constant pressure so as to quickly move a clutch piston R up to a meeting position of a clutch plate S of the forward travel clutch 35a or the backward travel clutch 35b in an initial stage of return operation of the clutch pedal O from a state of cutting off both the forward travel clutch and the backward travel clutch 35a, 35b by stepping the clutch pedal O. This clutch system elements work cooperatively in such a way that, when the pressure during oil feeding reaches a preset pressure or higher, oil feeding under the constant pressure is stopped, and is switched to oil feeding under a pressure changed in response to an operation angle of the clutch pedal O. <P>COPYRIGHT: (C)2012,JPO&INPIT |
