초록 ▼

A device for estimating a temperature of a working oil in a shock absorber in a suspension system which connects a sprung member and an unsprung member of a motor vehicle, wherein the temperature of the oil is estimated on the basis of at least detected vertical acceleration of the sprung member. Th

A device for estimating a temperature of a working oil in a shock absorber in a suspension system which connects a sprung member and an unsprung member of a motor vehicle, wherein the temperature of the oil is estimated on the basis of at least detected vertical acceleration of the sprung member. The device may be suitably incorporated in an apparatus for controlling the damping characteristic of the shock absorber, wherein an actuator is operated by a controller for changing the damping characteristic, and the controller includes the temperature estimating device, and a device for inhibiting an operation of the actuator to control the damping characteristic when the oil temperature estimated by the temperature estimating device is lower than a predetermined threshold.

대표청구항 ▼

An apparatus for controlling a damping characteristic of a shock absorber in a suspension system which connects a sprung member and an unsprung member of a motor vehicle, comprising: acceleration detecting means for detecting an actual value of vertical acceleration of said sprung member; an actuato

An apparatus for controlling a damping characteristic of a shock absorber in a suspension system which connects a sprung member and an unsprung member of a motor vehicle, comprising: acceleration detecting means for detecting an actual value of vertical acceleration of said sprung member; an actuator for controlling the damping characteristic of said shock absorber according to a drive signal applied thereto; and a controller for applying said drive signal to said actuator, to thereby operate said actuator for controlling said damping characteristic of said shock absorber, said controller comprising temperature estimating means for estimating a temperature of a working oil in said shock absorber using said actual value of vertical acceleration of said sprung member detected by said acceleration detecting means, said controller further comprising inhibiting means for inhibiting an operation of said actuator to control said damping characteristic of said shock absorber, when said temperature of said working oil estimated by said temperature estimating means is lower than a predetermined level.