Performance mode and economy mode shift scheduling in an automat

Interrelated power delivery controls – including engine control – Transmission control – Including fluid drive

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

477120, 477905, B60K 4118

Patent

active

053417038

ABSTRACT:
A system for scheduling gear ratio changes in an automatic transmission and controlling operation of a torque converter bypass clutch includes a microprocessor; electronic memory containing control algorithms, lookup tables, functions and constants; solenoid-operated shift valves, a variable force solenoid, friction clutches, brakes and sensors, and planetary gear units. A table of calibrated performance weighting factors (PWF) is used to alter reference schedules of gear ratio changes based on the extent to which high performance operation is desired rather than economy operation. The PWFs are used to adjust gear shift points based on inferences drawn from engine throttle position and time rate of change of throttle position. Hydraulic pressure supplied to the friction elements and the schedule of unlocked and modulated operation of the torque converter are adjusted from reference schedules and pressures on the basis of PWF values.

REFERENCES:
patent: 4111072 (1978-09-01), Harmon et al.
patent: 4338666 (1982-07-01), Suzuki et al.
patent: 4350057 (1982-09-01), Kishi et al.
patent: 4367812 (1983-01-01), Kobayashi et al.
patent: 4474081 (1984-10-01), Kinugasa et al.
patent: 4523281 (1985-06-01), Noda et al.
patent: 4564906 (1986-01-01), Stephan et al.
patent: 4669335 (1987-06-01), Matsuoka et al.
patent: 4679145 (1987-07-01), Beeck et al.
patent: 4688450 (1987-08-01), Hayashi et al.
patent: 4718310 (1988-01-01), Shindo et al.
patent: 4722249 (1988-02-01), Harada et al.
patent: 4733580 (1988-03-01), Kubo et al.
patent: 4807497 (1989-02-01), Yasue et al.
patent: 4815341 (1989-03-01), Ohkubo et al.
patent: 4823642 (1989-04-01), Iwaki et al.
patent: 4853720 (1989-08-01), Onari et al.
patent: 4899280 (1990-02-01), Onari et al.
patent: 4926328 (1990-05-01), Funatsu et al.
patent: 5031100 (1991-07-01), Takahashi
patent: 5035159 (1991-07-01), Shibayama
patent: 5038287 (1991-08-01), Taniguchi et al.
patent: 5040114 (1991-08-01), Ishikawa et al.
patent: 5081886 (1992-01-01), Person et al.
patent: 5126940 (1992-06-01), Haubner
patent: 5157991 (1992-10-01), Sumimoto
patent: 5189931 (1993-03-01), Suzuki
patent: 5231582 (1993-07-01), Takahashi et al.
patent: 5234876 (1993-08-01), Minowa et al.
patent: 5267158 (1993-11-01), Sakaguchi 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

Performance mode and economy mode shift scheduling in an automat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Performance mode and economy mode shift scheduling in an automat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Performance mode and economy mode shift scheduling in an automat will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-23942

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