Hydraulic control apparatus and method for automatic...

Details Hydraulic control apparatus and method for automatic... Hydraulic control apparatus and method for automatic...

2007-12-11

2007-12-11

Wright, Dirk (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Continuously variable friction transmission

C477S098000

Reexamination Certificate

active

11237904

ABSTRACT:
A hydraulic control apparatus for an automatic transmission with a line pressure regulator valve operative to regulate an oil pressure produced by an oil pump and set a line pressure, the hydraulic control apparatus including a control unit outputting a first command for controlling the line pressure regulator valve to set the line pressure to a minimum value immediately after engine start, and a second command for controlling the line pressure regulator valve to set the line pressure to a target value in accordance with increase in engine speed. The control unit is programmed to set the target value of the line pressure to a value smaller than a maximum value of the line pressure and/or reduce a target speed of engine speed, upon start of the engine in a low temperature condition.

REFERENCES:
patent: 7104907 (2006-09-01), Jozaki et al.
patent: 2004/0063523 (2004-04-01), Jozaki et al.
patent: 2004-124959 (2004-04-01), None

Affiliated with

Also associated with

Rating

Hydraulic control apparatus and method for automatic... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic control apparatus and method for automatic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic control apparatus and method for automatic... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3876485