Hydraulic control system for automatic transmission

Details Hydraulic control system for automatic transmission Hydraulic control system for automatic transmission

1990-02-22

1992-05-26

Diehl, Dwight

Machine element or mechanism

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

Preselected indexed position

74867, B60K 4106

Patent

active

051156954

ABSTRACT:
During minimal load or so called power off upshifts, the level of the line pressure which is applied during the inertia phase of a friction element which becomes engaged as a result of the upshift, is controlled in accordance with the rotational speed difference between parts of the friction element which are rotatable relative to one another.

REFERENCES:
patent: 4653350 (1987-03-01), Downs et al.
patent: 4653351 (1987-03-01), Downs et al.
patent: 4707789 (1987-11-01), Downs et al.
patent: 4722247 (1988-02-01), Shindo et al.
patent: 4724723 (1988-02-01), Lockhart et al.
patent: 4730521 (1988-03-01), Hayasaki et al.
patent: 4790418 (1988-12-01), Brown et al.
patent: 4947970 (1990-08-01), Miller et al.
patent: 4949595 (1990-08-01), Shimanaka
patent: 5012699 (1991-05-01), Aoki et al.

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