Control apparatus for an automatic transmission and a method...

Details Control apparatus for an automatic transmission and a method... Control apparatus for an automatic transmission and a method...

2005-01-18

2005-01-18

Lewis, Tisha (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

With brake control

C477S094000, C477S095000, C475S120000, C475S127000

Reexamination Certificate

active

06843754

ABSTRACT:
An engagement force for engaging a first friction engagement element is set to be lower than an engagement force for establishing a predetermined shift stage with a second friction engagement element being engaged when a vehicle is stopped with an acceleration pedal not being operated and a brake pedal being operated under a forward driving range in an automatic transmission. The engagement force for the first friction engagement element is increased when a vehicle starts with the brake pedal released from the operated condition, and the engagement force for engaging the second friction engagement element is decreased when a relative rotational speed between a turbine wheel and a forward movement member becomes equal to or smaller than a predetermined rotational speed.

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patent: 5921884 (1999-07-01), Nishiwaki et al.
patent: 6039673 (2000-03-01), Mikami et al.
patent: 6411881 (2002-06-01), Thomas
patent: 6645122 (2003-11-01), Ishiguro et al.
patent: 5-86514 (1993-12-01), None

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