Controller for an automatic motor vehicle transmission

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

701 57, 477109, B60K 4106, F16H 5938

Patent

active

058227083

ABSTRACT:
A control device for an automatic motor vehicle transmission reduces engine torque during a shifting operation, in particular a shifting operation in a traction mode, in order to increase smoothness of shifting. The engine torque reduction is begun at the earliest upon reaching a free-wheel point of the transmission and is ended shortly before a synchronizing point of the transmission is reached. The free-wheel point and the synchronizing point of the transmission are ascertained from rpm differences in the gearshift elements involved in the particular switching operation. Differential rpm thresholds used in the process and the intensity of the torque reduction are ascertained with fuzzy systems.

REFERENCES:
patent: 4355550 (1982-10-01), Will et al.
patent: 4360092 (1982-11-01), Muller et al.
patent: 4770064 (1988-09-01), Kuerschner
patent: 4823266 (1989-04-01), Baltusis et al.
patent: 5072631 (1991-12-01), Fujimoto et al.
patent: 5119696 (1992-06-01), Yamaguchi
patent: 5261296 (1993-11-01), Ramm
patent: 5307270 (1994-04-01), Graf
patent: 5335568 (1994-08-01), Kammerl et al.
patent: 5491775 (1996-02-01), Madau et al.
patent: 5559694 (1996-09-01), Kraemer et al.
patent: 5580331 (1996-12-01), Shiraishi et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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

Rate now

     

Profile ID: LFUS-PAI-O-326733

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.