Device for hydraulically actuating a motor vehicle friction clutch
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United States of America Patent
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-
Oct 31, 2017
Grant Date -
Nov 24, 2016
app pub date -
Jan 21, 2015
filing date -
Jan 30, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A hydraulic actuation device for a motor vehicle friction clutch has a manually actuatable master cylinder, that has a master pressure chamber which, in a rest position, is fluidically connected to a reservoir. The master cylinder is connected to a slave arrangement that is functionally connected to the motor vehicle friction clutch. A pressure line connects the master pressure chamber to the slave arrangement and in which incorporates an electrically actuatable valve arrangement with an electrically actuatable proportional valve and, connected in parallel, a first check valve which blocks in the direction of the master pressure chamber. A motor pump is connected, on the input side, to the reservoir and can be connected, on the output side, to the pressure line between the valve arrangement and the slave pressure chamber through a second check valve that blocks in the direction of the motor pump.
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