Pressure regulating arrangement for automatic transmission

Details Pressure regulating arrangement for automatic transmission Pressure regulating arrangement for automatic transmission

1988-10-31

1990-03-27

Braun, Leslie A.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74869, B60K 4110

Patent

active

049110365

ABSTRACT:
A pressure regulating valve has a bore in which in a spool and an accumulator piston are disposed. A spring is disposed between the two elements and arranged to bias the spool in a first axial direction which tends to maximize the amount of hydraulic fluid which is supplied to a friction element. As the accumulator chamber defined by the accumulator piston fills, the spring is compressed increasing the bias on the spool.
The spool defines a feedback chamber, the pressure in which which tends to bias the spool in a second axial direction which minimizes the supply of hydraulic fluid, and which features a chamber which is supplied directly with a pressure indicative of transmission torque. This chamber is arranged so that the pressure therein produces a bias which also acts in the first axial direction and so that no resistance to the stroking of the accumulator piston is produced.

REFERENCES:
patent: 3719108 (1973-03-01), Sakai
patent: 3822611 (1974-07-01), Piret
patent: 4200008 (1980-04-01), Dach
patent: 4843917 (1989-07-01), Van Selons et al.
Service Manual, Saab 9000, 4:2 Supplement Automatic Transmission, pp. 3, 17 and 18.

Affiliated with

Also associated with

Rating

Pressure regulating arrangement for automatic 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 Pressure regulating arrangement for automatic transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure regulating arrangement for automatic transmission will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1642705