| 摘要 |
<p>PURPOSE:To make it possible to limit the maximum load imposed to a release fork upon release of a clutch, by preventing vacuum in a vacuum servo actuator from exceeding a predetermined value. CONSTITUTION:There is provided a vacuum servo actuator 2 communicated with the intake-pipe of an engine as a vacuum source, a release fork 192 for coupling between a power cut-off clutch in a transmission unit operated by the vacuum servo actuator 2 and the vacuum servo actuator 2, a vacuum pressure control device 3 for controlling the pressure of vacuum fed to the negative servo actuator 2 and an electronic control device 1 for controlling the vacuum pressure control device 3 in accordance with the output of a vacuum sensor 6. With this arrangement vacuum pressure in the vacuum servo actuator 2 is prevented from exceeding a predetermined value to limit the maximum load imposed to the release fork 192 upon release of the clutch, thereby it is possible to reduce the strengthes of components parts of the clutch.</p> |
