Shift control system for continuously variable traction roller t

Details Shift control system for continuously variable traction roller t Shift control system for continuously variable traction roller t

1992-03-12

1993-02-23

Wright, Dirk

Friction gear transmission systems or components

Fluid control

Of toroidal transmission

F16H 1508

Patent

active

051879956

ABSTRACT:
In a shift control system for a continuously variable traction roller transmission, a shift control valve includes a stepper motor which is driven in response to a commanded speed ration. The stepper motor drives a pinion which engages a rack. The rack is connected to a spool disposed in a sleeve. The relative position between the spool and sleeve determines the hydraulic pressure applied to change the speed ratio of the transmission. The sleeve is moved by shift members while the spool is moved by the stepper motor. The force necessary to move the spool is less than in other designs, thereby allowing for the use of a smaller stepper motor.

REFERENCES:
patent: 4905529 (1990-03-01), Nakano
patent: 4960004 (1990-10-01), Hibi et al.
patent: 5052236 (1991-10-01), Nakano
patent: 5083473 (1992-01-01), Nakano
patent: 5099710 (1992-03-01), Nakano

Affiliated with

Also associated with

Rating

Shift control system for continuously variable traction roller t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shift control system for continuously variable traction roller t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shift control system for continuously variable traction roller t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2197397