| 摘要 |
PURPOSE:To attain proper damping characteristics according to a running condition, by detecting an engine load from a clutch pedal, a shift gear position, and an automotive running speed, and thereby enhancing a spring constant of a mount device. CONSTITUTION:There is provided a solenoid selector valve 17 in a communication passage 16 for communicating an upper and lower fluid chambers 14 and 15 of engine mount devices 2 and 4 which solenoid selector valve is controlled by a control circuit 20. The control circuit 20 is connected with a clutch pedal switch 21, a shift lever switch 22 and an automotive speed switch 23, and when a clutch pedal is depressed, a shift lever is operated, and an automotive speed is over a fixed value, the solenoid selector valve 17 is actuated for a predetermined time to enhance a spring constant of the mount devices. With this arrangement, when a rapid shift operation occurs, an engine vibration may be effectively damped, and as the spring constant in a normal operation may be set to a small value, an automotive vibration may be reduced. |
