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US5462501: Method of actuating an automatic transmission

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Filing Information

Inventor(s) Wolfgang Bullmer · Klemens Kronenberg · Herbert Ott ·
Assignee(s) Robert Bosch GmbH ·
Attorney/Agent(s) Walter Ottesen ·
Primary Examiner Dirk Wright ·
Application Number US8225547
Filing date 04/11/1994
Issue date 10/31/1995
Predicted expiration date 04/11/2014
U.S. Classifications 477/155  · 475/125  ·
International Classifications F16H 5974  ·
Kind CodeA
International Classifications 477155;156 ·
Foreign Priority DE4311921.2 - 04/10/1993 ·
23 Claims, No Drawings


Abstract

The invention is directed to a method for adjusting the hydraulic pressure actuating at least one clutch of an automatic transmission. The hydraulic pressure is pregiven only by one pressure controller and the automatic transmission coacts with the motor which is especially a drive motor of a motor vehicle. The pressure supplied by the pressure controller is determined in dependence upon the trace of a pregiven motor desired torque.

Independent Claims | See all claims (23)

  1. 1. A method for adjusting a hydraulic pressure actuating at least one clutch of an automatic transmission during a gear change, the automatic transmission having a pressure controller and coacting with a motor such as the drive motor of a motor vehicle, the method comprising the step of determining the pressure to be supplied by said pressure controller in dependence upon a pregiven motor desired torque (M.sub.des).

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3882740 DAIMLER BENZ AG Forster et al. May 1975

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
DE4311921 BOSCH GMBH ROBERT BULLMER WOLFGANG DIPL ING et al. Oct 1994
FR2703748 BOSCH GMBH ROBERT BULLMER WOLFGANG et al. Oct 1994
US5462501 Robert Bosch GmbH Wolfgang Bullmer et al. Oct 1995