Method for controlling a dual clutch transmission
AssigneeBorgWarner Inc.
InventorMelissa Koenig
Life of this patent
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Abstract
A method of controlling the hydraulic actuation of the clutches and the synchronizers in a dual clutch transmission in the event of a clutch or synchronizer fault. The method includes the steps of determining which clutch is faulted when a clutch-on fault is detected, then commanding an interruption of engine torque to the faulted clutch and a neutralization of all synchronizers of the same axis shaft as the faulted clutch. The method further senses if a synchronizer actuator-on fault has occurred, then determines which synchronizer is faulted if an actuator-on fault has is detected. The method steps further include preventing the further actuation of the other synchronizers on the same axis shaft as the faulted actuator.
Claims13
A method of controlling the engagement of clutches and synchronizers of a dual clutch transmission in the event of a clutch or synchronizer fault, said method includes the steps of:
- determining which clutch is faulted when a clutch-on fault is detected;
- commanding an interruption of engine torque to the faulted clutch;
- commanding neutralization of all synchronizers of a same axis shaft as the faulted clutch;
- determining which synchronizer is faulted if an actuator-on fault has is detected;
- and
- preventing the further actuation of the other synchronizers on the same axis shaft as the faulted actuator.
Dependencies are inferred from the claim text.