Torque converter controller stuck-on test in a multiplex device

Details Torque converter controller stuck-on test in a multiplex device Torque converter controller stuck-on test in a multiplex device

2007-07-24

2007-07-24

Le, David D. (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

C477S168000, C477S180000, C477S906000, C701S034000

Reexamination Certificate

active

10836893

ABSTRACT:
A device and method for fluid delivery in a continuously variable transmission that includes a valve assembly, configured to distribute a fluid, having a first position and a second position. A forward clutch, a reverse clutch, and a torque converter are connected to the valve assembly. The valve assembly in the first position regulates either the forward clutch or the reverse clutch and opens the torque converter. In the second position, the valve assembly closes the forward clutch or the reverse clutch and regulates the torque converter. A controller commands the valve assembly to the first position and detects if the valve assembly is stuck in the second position. The controller is able to detect the valve assembly stuck in the second position and attempt to unstuck it while the continuously variable transmission is in drive.

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