U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Method for controlling engine torque when shifting gears

Patent 6547697 Issued on April 15, 2003. Estimated Expiration Date: Icon_subject May 14, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Acceleration-based control of power-on downshifting in an automatic transmission
Patent #: 5079970
Issued on: 01/14/1992
Inventor: Butts, et al.

Method for speed stage shifting from indefinite driving condition
Patent #: 5307711
Issued on: 05/03/1994
Inventor: Kimura, et al.

Torque feedback shift control device and method
Patent #: 5613920
Issued on: 03/25/1997
Inventor: Uno, et al.

Automatic transmission control system
Patent #: 5820516
Issued on: 10/13/1998
Inventor: Sasaki, et al.

Engine torque control during multiple speed changes of an automatic transmission
Patent #: 6254508
Issued on: 07/03/2001
Inventor: Kojima, et al.

6269293

Inventors

Assignee

Application

No. 831774 filed on 05/14/2001

US Classes:

477/109Diminution during transmission change

Examiners

Primary: Wright, Dirk

Attorney, Agent or Firm

Foreign Patent References

  • 37 35 246 DE. 05/11/1988
  • 0 278 856 EP. 08/11/1988
  • 0 536 759 EP. 04/11/1993

International Class

B60K 041/04

Foreign Application Priority Data

1998-11-12 FR

Abstract

The invention relates to a motor vehicle comprising a fully automatic transmission, of the type in which a management unit (20) controls the operation of the engine (10) as a function of torque demand information from a throttle pedal (24), and of the type in which the engine management can be modified as a function of information transmitted by a transmission (16) control unit (22) to the engine (10) management unit (20), characterized in that for certain phases of operation of the vehicle, the transmission (16) control unit (22) inhibits the action of the torque demand information, for which it substitutes an engine management command to which the management unit (20) is subordinated.

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