Patent ID: 7593797
Filing Date: 2009-09-22
Classification: B60G

Abstract:
1. A control system for an adjustable damping force damper, comprising: a damper and a spring provided on a suspension apparatus of a vehicle; a sprung speed sensor configured to detect speed of an upper member of the spring, the sprung speed being generated when the vehicle goes over bumps on a road surface; and a control unit configured to set a gain so as to determine a damping force of the damper based on a product of the sprung speed and the gain, wherein, when an absolute value of the sprung speed exceeds a predetermined value, the control unit changes the gain differently in response to a positive sign than in response to a negative sign of the sprung speed, and wherein the gain when the sign of the sprung speed is positive is larger than the gain when the sign of the sprung speed is negative.