Research on DCT shifting torque control and a benchmark test

In this study, the working principles of Dual clutch transmission (DCT) are analyzed, the power switching rule for dual clutches during upshift and downshift are formulated, and the model of DCT shift dynamics is established. Subsequently, upshift/downshift control strategies and sliding friction power are simulated and analyzed. A benchmark shift control test is conducted on real DCT vehicles, and test results show that the effect of clutch torque control strategy coincides with actual vehicle control during the upshift process. However, this effect varies during the downshift process. Two different downshift methods are proposed on the basis of the study findings. Moreover, the influence of downshift control method on engine control is analyzed, and the DCT torque control strategy employed during downshift is optimized.