Hydraulic control system of automatic transmission for vehicles

Details Hydraulic control system of automatic transmission for vehicles Hydraulic control system of automatic transmission for vehicles

1995-06-21

1997-04-29

Wright, Dirk

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid controlled mechanical clutch or brake

475128, B60K 4110

Patent

active

056243413

ABSTRACT:
A hydraulic control system of automatic transmission for vehicles includes a torque converter control part having a damper clutch control solenoid valve and a regulator valve; a manual valve for supplying an oil pressure to another lines according to a shift lever's position; a first, a second, and a third indirect control valves, to which the oil pressure is supplied if the manual valve is set in drive "D" range; a first, a second, and a third solenoid valves, each of which controls the indirect control valves, respectively; a first friction element communicating with the first indirect control valve; a second friction element communicating with the second indirect control valve; a third friction element communicating with the second indirect control valve; a fourth friction element communicating with the third indirect control valve; a switch valve for supplying an operating pressure to the second friction element in drive "D" range and supplying the operating pressure to the third friction element in "L" range selectively; and a safety valve which is connected to the switch valve and prevents a gear train from locking when the operating pressure is applied to the friction elements simultaneously.

REFERENCES:
patent: 3709064 (1973-01-01), Schaefer et al.
patent: 4541308 (1985-09-01), Person et al.
patent: 4742732 (1988-05-01), Hiramatsu
patent: 4756213 (1988-07-01), Mainquist et al.
patent: 5085103 (1992-02-01), Ando et al.
patent: 5288279 (1994-02-01), Sakai et al.
patent: 5538479 (1996-07-01), Nijama

Affiliated with

Also associated with

Rating

Hydraulic control system of automatic transmission for vehicles 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 system of automatic transmission for vehicles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic control system of automatic transmission for vehicles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-702026