Line pressure control system for automotive automatic transmissi

Details Line pressure control system for automotive automatic transmissi Line pressure control system for automotive automatic transmissi

1989-07-31

1990-11-06

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

049676202

ABSTRACT:
The outputs of one or more the sensors involved in the control of the transmission line pressure level are monitored. In the event that one of the same exhibits characteristics indicative that it is malfunctioning, a self-update function which modifies the line pressure level based on the length of a shift time is inhibited in order to prevent the line pressure being adjusted in a totally erroneous manner.

REFERENCES:
patent: 4266447 (1981-05-01), Heess et al.
patent: 4742461 (1988-05-01), Eschrich et al.
patent: 4779491 (1988-10-01), Fujiwara et al.
patent: 4787272 (1988-11-01), Taga et al.
patent: 4791568 (1988-12-01), Hiramatsu et al.
patent: 4843922 (1989-07-01), Kashihara
Nissan Full-Range Automatic Transmission Re4R01A Type, Service Manual, (A261C07) issued on Mar. 1987, by Nissan Motor Company Limited.

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