| 摘要 |
Providing a hydraulic control device for a friction clutch for a vehicle, which permits the vehicular friction clutch to have an improved response of its releasing action. The hydraulic control device includes a braking valve 76 provided in an oil passage through which a working oil is discharged from a clutch cylinder 40 to place the friction clutch 10 in its engaged state, and the braking valve permits the working oil to be discharged from the clutch cylinder 40 when a pressure acting on an end portion of the braking valve on the side of the clutch cylinder 40 has exceeded a predetermined clutch releasing pressure value, so that a discharge flow of the working oil from a pressure chamber 44 of the clutch cylinder 40 is restricted due to the braking valve 76 even when the pressure in the pressure chamber 44 is reduced below the atmospheric pressure value, whereby it is possible to prevent an increase of a gap formed between a pair of pistons 46, 48 of the clutch cylinder 40, permitting an improvement of a response of the releasing action of the friction clutch 10. |
