Shift control apparatus for an automatic transmission

Details Shift control apparatus for an automatic transmission Shift control apparatus for an automatic transmission

2005-10-18

2005-10-18

Pang, Roger (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

Reexamination Certificate

active

06955629

ABSTRACT:
A shift control apparatus has first, second, third and fourth engagement elements, and a shift control processing unit engaging the first and the second engagement elements in order to realize a first shift speed, engaging the third and the fourth engagement in order to realize a second shift speed, and inhibiting an increase in torque capacity of one of the first and second engagement elements before starting of release of the second engagement element when shifting from the first to the second shift speed. During shifting from the first to the second shift speed, an increase in torque capacity of one of the first and second engagement elements is inhibited before starting of release of the second engagement element. This prevents a step-like shift shock from being caused by the slowed progression of shifting when release of the second engagement element is started.

REFERENCES:
patent: 5961422 (1999-10-01), Yasue et al.
patent: 6270444 (2001-08-01), Tsutsui et al.
patent: 6626786 (2003-09-01), Hayabuchi et al.
patent: 6712735 (2004-03-01), Hayabuchi et al.
patent: 2002/0086760 (2002-07-01), Hayabuchi et al.
patent: 2002/0086761 (2002-07-01), Hayabuchi et al.
patent: 02000337500 (2000-12-01), None

Affiliated with

Also associated with

Rating

Shift control apparatus for an automatic transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shift control apparatus for an automatic transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shift control apparatus for an automatic transmission will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3449740