BigPatents India

When a front wheel load becomes light, it may easily produce kickback, so that it is carried out that the front wheel load is detected to control a damping force of a steering damper. However, sensing of the front wheel load was influenced by a variation in temperature, so that its sensing was difficult and a structure for performing a sensing operation became complicated. Thus, a control showing no such a possibility as above is realized. There is provided a rotary steering damper 10 in coaxial manner on a steering shaft and either occurrence of damping force or zero damping force is changed over by the variable valve 38 arranged at the bypass passage 37 communication with the right liquid chamber 34 and the left liquid chamber 35. this changing-over is controlled by the control device 40, the control device 40 may generate a damping force at the steering damper 10 only when an acceleration detected by the acceleration speed sensor 41 exceeds a threshold value. In addition, when the fact that vehicle body speed detected by the vehicle body speed sensor 42 exceeds a threshold value is applied as a weighting condition for control, a change in occurrence of acceleration speed caused by a vehicle body speed can be corrected. Drawing: 4 Sheets. Total Pages: 18 Fig. 4