Device for the automatic actuation of a friction clutch
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United States of America Patent
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-
Nov 20, 1990
Grant Date -
N/A
app pub date -
Oct 11, 1988
filing date -
Nov 7, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for automatic actuation of a friction clutch in the transmission line of a motor vehicle between an internal combustion engine and a change-speed gear, including a setting drive system for positioning a clutch releaser of the friction clutch in dependence upon an ideal-position signal, an engine rotation rate sensor which generates an engine rotation rate signal corresponding to the rotation rate of the internal combustion engine, a sensor device generating a gear rotation rate signal corresponding to the input rotation rate of the change-speed gear, and a control system responding to the engine rotation rate sensor and controlling the setting drive system for the engagement and disengagement of the clutch, the control system, for the engagement of the clutch in the starting of the motor vehicle, generates the ideal position signal according to a predetermined characteristic in dependence upon the engine rotation rate signal, and increases the ideal-position signal, in dependence upon the engine rotation rate signal, by a proportion of the gear rotation rate signal which corresponds to a predetermined fraction of the gear input rotation rate.
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