| 摘要 |
A direct coupled clutch is provided in parallel to a fluid type torque converter in an automatic transmission, and supply of oil pressure to a hydraulic servo of the direct coupled clutch is controlled by an electromagnetic valve. Alteration of engaging condition of engaging elements in a transmission gear is carried out by maintaining the direct coupled clutch in the disengaging condition. As a result, difference of torque between the engine side of the engaging elements and the drive wheel side, which difference is produced in the speed change, is absorbed by the fluid type torque converter so that impact is restrained. |
