Control device for continuously variable transmission

Details Control device for continuously variable transmission Control device for continuously variable transmission

2007-03-28

2011-11-22

Mansen, Michael (Department: 3654)

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Fluid pressure actuator for adjustment of member

C474S018000

Reexamination Certificate

active

08062156

ABSTRACT:
Safety as well as the minimum driving performance is secured by preventing abrupt down-shifting if a line pressure valve or a primary pressure control valve fails. A line pressure path connected to an oil pump is connected with a line pressure control valve. A first primary pressure path branched from the line pressure path is connected with a hydraulic fluid chamber through a fail-safe valve, and a secondary pressure path branched from the line pressure path is connected to a hydraulic fluid chamber. The line pressure control valve is connected with a second primary pressure path in communication with a hydraulic fluid chamber, and this secondary primary pressure path is provided with a primary pressure control valve and a limiter valve. When the line pressure control valve and the primary pressure control valve fail and excess line pressure or primary pressure is output, the pressure in the hydraulic fluid chamber is reduced by the fail-safe valve, so that the pressure in the hydraulic fluid chamber is reduced by the limiter valve.

REFERENCES:
patent: 6299564 (2001-10-01), Gessler et al.
patent: 6338695 (2002-01-01), Aoki et al.
patent: 6443871 (2002-09-01), Taniguchi et al.
patent: 2005/0107195 (2005-05-01), Katou
patent: 2005/0197221 (2005-09-01), Nozawa et al.
patent: 6-42625 (1994-02-01), None
patent: 2001-012598 (2001-01-01), None
patent: 2001-330135 (2001-11-01), None

Affiliated with

Also associated with

Rating

Control device for continuously variable transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control device for continuously variable transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control device for continuously variable transmission will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4268658