| 摘要 |
<p>PURPOSE:To prevent a generation of a clattering noise due to the rotary motion of counter gears in the clutch device when the clutch is disengaged at an neutral position of the engine operation with a speed of the vehicle zero, by enabling the clutch to be kept in a disengagement condition despite a manner in what state the clutch pedal is depressed. CONSTITUTION:Under the condition of an engine idling operation when the vehicle is not in motion with a clutch 3 engaged and a gear shifting in a neutral position, both a neutral approval switch 11 and a vehicle speed zero approval switch 12 are turned on and both the first and second solenoid on-off valves 7, 8 are in a state of closing. Under the above condition, if depressed a clutch pedal 1, a limit switch 15 for approval of a depressing start of the clutch pedal is turned on inputting a negative pulse to a monostable multivibrator 16, inverting its output for a certain time period, causing a solenoid 14 to be energized through a transistor TR1, and the valve 8 is opened only while in a full stroke depression period of the pedal 1. Accordingly, the pressurized oil is fed to a release cylinder 5 to disengage the clutch 3 further to hold this condition.</p> |
