| 摘要 |
PROBLEM TO BE SOLVED: To suppress occurrence of an uplock phenomenon in a synchromesh device for a vehicle whose sleeve is driven by a hydraulic actuator.SOLUTION: Since an electronic control device 89 includes a linear solenoid valve 70 which outputs hydraulic pressure corresponding to a drive signal to drive a hydraulic actuator 68, and a drive signal output device 90 which outputs a dither chopper drive signal Iin which a chopper drive signal and a dither drive signal whose frequency is lower than that of the chopper drive signal are superimposed to the linear solenoid valve 70, an output pressure Phaving a low-frequency fluctuation is outputted to the hydraulic actuator 68 from the linear solenoid valve 70 by the dither chopper drive signal I, and low-frequency fluctuation vibration is thereby generated at a sleeve 54 which is driven by the hydraulic actuator 68 to an axial direction. Therefore, the occurrence of an uplock phenomenon at the engagement of a meshing-type clutch D1 is suppressed.SELECTED DRAWING: Figure 10 |
