Method and device for the hydraulic actuation of a clutch, especially for automobiles
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United States of America Patent
Stats
-
Dec 22, 1998
Grant Date -
N/A
app pub date -
Aug 28, 1996
filing date -
Sep 15, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and a device for the hydraulic actuation of a clutch operatively connected to a clutch receiver cylinder (6), especially for automobiles, are disclosed, in which, in a servo circuit (S), a servo pressure is generated, which serves for the hydraulic governing of a clutch transmitter cylinder (2), in order to generate in a pressure circuit (D) a working pressure, which is applied to the clutch receiver cylinder (6), or is applied directly to the clutch receiver cylinder (6), in order to create there a force required for disengaging the clutch. According to the invention, the servo pressure for disengaging and engaging the clutch is adjusted in defined manner in the servo circuit (S), for which purpose the servo circuit (S) comprises a proportional valve (8, 8'). As a result, with technical equipment at low cost, an automated actuation with improved response and operational behaviour of the clutch is made possible. Furthermore, a method and a device for gear-shifting a mechanical gear are disclosed, in which the servo pressure of the clutch disengagement is used for shifting the clutch sleeves of the mechanical gear.
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