Line pressure control arrangement for automatic transmission

Details Line pressure control arrangement for automatic transmission Line pressure control arrangement for automatic transmission

1989-05-05

1990-07-10

Wright, Dirk

Machine element or mechanism

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

Preselected indexed position

74867, B60K 4118

Patent

active

049399578

ABSTRACT:
Engine torque is derived using the air flow and engine speed, and used to determine the basic level of line pressure. The opening degree of the engine throttle valve is sensed and the level of the line pressure increased according to a correction schedule in the event that the throttle valve is opened beyond a predetermined amount.

REFERENCES:
patent: 4308765 (1982-01-01), Iwanaga et al.
patent: 4388844 (1983-06-01), Arai et al.
patent: 4488456 (1984-12-01), Taga et al.
patent: 4552036 (1985-11-01), Takano et al.
patent: 4736301 (1988-04-01), Osanai
patent: 4751858 (1988-06-01), Iwatsuki
patent: 4836055 (1989-06-01), Suzuki

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