Patent ID: 9002606
Filing Date: 2015-04-07
Classification: B60W,F16D,Y10T

Abstract:
1. A method for controlling a dry dual clutch transmission (dDCT) of a vehicle, the vehicle including an acceleratable engine configured to provide torque and inertia, and an engine control module (ECM), an applyable and releasable brake applier, an accelerator applier, the dDCT, and a transmission control module (TCM) in communication with the dDCT and the ECM, the dDCT having first and second input clutches and first and second gear sets selectively connected to the engine via the respective first and second input clutches, the TCM having a recorded torque-to-position (TTP) table, the method comprising: detecting when the brake applier is released; receiving an actual engine torque value from the ECM; determining an inertia and an acceleration of the engine; calculating, via the TCM, a clutch torque for the first input clutch as a function of the actual engine torque value, the inertia, and the acceleration; determining, via the TCM, a commanded clutch torque sufficient to move the vehicle without applying the accelerator applier after the brake applier has been released; comparing, via the TCM, the calculated clutch torque to the commanded clutch torque to determine a calculated clutch torque difference between the calculated clutch torque and the commanded clutch torque; modifying, via the TCM, the recorded TTP table based on the calculated clutch torque difference to determine a modified bite point; and transmitting, via the TCM, a modified clutch bite point signal to the first input clutch to thereby command the first input clutch to move to the modified clutch bite point.