Line pressure control arrangement for automatic automotive trans

Details Line pressure control arrangement for automatic automotive trans Line pressure control arrangement for automatic automotive trans

1989-07-06

1991-03-12

Wright, Dirk

Machine element or mechanism

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

Preselected indexed position

74866, B60K 4118

Patent

active

049984519

ABSTRACT:
A line pressure control system features the use of a self-adjusting arrangement wherein the total shift time is determined and compared with a target time for the instant shift. The line pressure control duty cycle is modified until the line pressure level is adjusted in a manner which reduces the difference between the actual total shift time and the target value, to zero.

REFERENCES:
patent: 4388844 (1983-06-01), Arai et al.
patent: 4653350 (1987-03-01), Downs et al.
patent: 4843922 (1989-07-01), Kashihara

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