| 摘要 |
The invention relates to a hydraulic control apparatus ( 1 ) for a shifting fork ( 7 ) for engaging/releasing at least one gear (G) in a manual transmission, comprising at least one shifting cylinder ( 2, 3 ) and a piston unit ( 6 ) which can move within the shifting cylinder and is connected to the shifting fork ( 7 ), and at least one control valve ( 8 ) for generating a modeled pressure which can be applied to the piston unit ( 6 ) in order to actuate the shifting fork ( 7 ). To prevent jolting when the piston unit is started up, the invention proposes a valve apparatus which provides a counter-pressure which counteracts the movement of the piston unit ( 6 ). In a preferred exemplary embodiment, a diaphragm ensures that the counter-pressure drops below the value preset by the valve apparatus at low speeds on the part of the piston unit.
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