Transmission cold start burst rattle reduction

Details Transmission cold start burst rattle reduction Transmission cold start burst rattle reduction

2007-04-24

2007-04-24

Ho, Ha (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Control by sensed ambient condition, pattern indicia,...

C477S156000

Reexamination Certificate

active

10939552

ABSTRACT:
A vehicle having an engine that drives a transmission includes a pump that provides fluid to the transmission and a temperature sensor that monitors a temperature of the fluid. The temperature sensor generates a temperature signal. A control module receives the temperature signal and operates the pump to provide the fluid at a first pressure when the temperature signal is below an upper temperature limit. The control module operates the pump to provide the fluid at a second pressure when the temperature signal is above the upper temperature limit.

REFERENCES:
patent: 5115694 (1992-05-01), Sasaki et al.
patent: 5261295 (1993-11-01), Iwanaga et al.
patent: 6840889 (2005-01-01), Aoki et al.
patent: 60-179552 (1985-09-01), None
patent: 4-66337 (1992-03-01), None

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