System for controlling a line pressure in an automatic transmiss

Details System for controlling a line pressure in an automatic transmiss System for controlling a line pressure in an automatic transmiss

1988-04-04

1989-06-06

Wright, Dirk

Machine element or mechanism

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

Preselected indexed position

74752A, B60K 4118

Patent

active

048360554

ABSTRACT:
A system for controlling line pressure has a line pressure calculator for producing a line pressure signal in response to load on an engine and vehicle speed, a control signal generator responsive to the line pressure signal for producing a control signal, and an electromagnetic valve operated by the control signal, for controlling pressure of control oil in a hydraulic circuit of an automatic transmission. A pressure regulator valve provided in the hydraulic circuit is operated by the control oil to control line pressure.

REFERENCES:
patent: 3680410 (1972-08-01), Sumiyoshi et al.
patent: 3688609 (1972-09-01), Friedline
patent: 3776048 (1973-12-01), Enomoto et al.
patent: 3943799 (1976-03-01), Sakai et al.
patent: 4282780 (1981-08-01), Totani et al.
patent: 4319501 (1982-03-01), Sugimoto
patent: 4486838 (1984-12-01), Itoh et al.
patent: 4488456 (1984-12-01), Taga et al.
patent: 4722247 (1988-02-01), Shindo et al.
patent: 4763545 (1988-08-01), Shibayama et al.

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