The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 21, 1993

Filed:

Sep. 15, 1992
Applicant:
Inventors:

Larry T Brown, Dearborn, MI (US);

Marvin P Kraska, Dearborn, MI (US);

Assignee:

Ford Motor Company, Dearborn, MI (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; F16D / ; B60K / ;
U.S. Cl.
CPC ...
3644241 ; 74866 ; 74867 ; 192 8717 ; 192-0076 ;
Abstract

An automatic transmission for an automotive vehicle having an automatic ratio control wherein provision is made for disengaging a forward-drive clutch which forms a part of the torque flow path from an engine to the torque input element of multiple-ratio gearing and for disengaging the forward-drive clutch when the vehicle is stopped and the vehicle engine is idling and wherein provision is made for engaging the clutch to condition the transmission for torque delivery, the engagement being controlled by an electronic microprocessor as part of a closed control loop, thereby minimizing inertia torque disturbances when the clutch is engaged upon the initiation of the vehicle acceleration mode from a standing start.


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