Control apparatus for automatic transmission

Details Control apparatus for automatic transmission Control apparatus for automatic transmission

1990-06-19

1992-03-10

Herrmann, Allan D.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

B60K 4106

Patent

active

050941283

ABSTRACT:
A control apparatus for an automatic transmission having a torque converter is so adapted that first a comparatively high-speed change ratio is set when there is a range changeover between the reverse range R and a forward cruising range (e.g., D, S, or L). This comparatively high-speed change ratio is maintained until it is detected that the gear mechanism of the automatic transmission is substantially formed for this high change ratio. A transition is made to a low-speed change ratio after it is confirmed that the gear mechanism is substantially formed for the high change ratio. By virtue of this operation, the torque delivered by the output shaft of the transmission assumes a step-shaped form in the course of the transition from the high-speed change ratio to the low-speed change ratio. As a result, a large transmission shock is minimized.

REFERENCES:
patent: 4222292 (1980-09-01), Will et al.
patent: 4665777 (1987-05-01), Kikuchi et al.
patent: 4694709 (1987-09-01), Kikuchi et al.
patent: 4800497 (1989-01-01), Koori et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2278300