Torque-control system for automatic speed changer shiftable under load

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United States of America Patent

PATENT NO 4485443
SERIAL NO

06267700

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Abstract

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A system for controlling the torque to be transmitted by a fluid-operated friction coupling (clutch or brake) in an automatic speed changer comprises a processor which receives readings of the rotary speeds of an input member and an output member to be interengaged by that coupling and calculates the instantaneous relative angular acceleration .alpha.=-d.vertline..DELTA.n.vertline./dt from these data, the value .alpha. being supplied to a comparator. A computer receiving the same readings determines the optimum acceleration and feeds the result to the comparator whose output actuates a governor controlling the fluid pressure supplied to the coupling.

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Patent Owner(s)

Patent OwnerAddress
ZAHNRADFABRIK FRIEDRICHSHAFEN AKTIENGESELLSCHAFT 7990 FRIEDRCHSHAFEN GERMANY A CORP OF GERMANYNot Provided

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boes, Werner Friedrichshafen, DE 1 56
Knodler, Dietrich Friedrichshafen, DE 1 56
Ott, Anton Tettnang, DE 9 155
Venger, Kurt O Friedrichshafen, DE 1 56

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