| 摘要 |
PURPOSE:To improve the durability of various parts by providing a switch for detecting the switching condition between 2 and 4 wheel drive while preventing application of negative pressure in engine intake system onto the actuator upon switching. CONSTITUTION:Each chamber 33a, 33b of actuator 30 is communicated through respective negative pressure path 40a, 40b having solenoid valve 39a, 39b to the intake manifold 41 at the engine side. A manual changeover switch 42, 2WD switch 43 arranged in the way or at the end of rail 36 to detect the changeover condition of 2WD and 4WD switch 44 for detecting the changeover condition into 4WD are provided where said switch 44 will turn on upon changeover to detect the condition thus to supply power to the coil 45a of relay 45 and to turn off the contact 45b thereby the solenoid valve 39b will close to open the chamber 33b of the actuator 30 to the atmosphere. |
