| 摘要 |
<p>The object of this invention is to detect an abnormality of a roll-motion restricting device including a hydraulic circuit. <??>It is possible to determine that a fluid leakage takes place if actual fluid pressure in fluid passages 72, 74 connecting the corresponding fluid chambers of front-wheel-side hydraulic cylinder 30 and rear-wheel-side hydraulic cylinder 60 is lower than a value determined by a lateral acceleration value of a vehicle. On the basis of a relationship between a state of rolling of the vehicle and the fluid pressure, the hydraulic circuit can be diagnosed for any abnormality. In the event of detection of an abnormality, solenoid-operated shut-off valves 100, 102 are closed to isolate the two hydraulic cylinders 30, 60 from each other, and isolate one of the hydraulic cylinders or a portion of the fluid passage, which suffers from the fluid leakage, from the other hydraulic cylinder, so that this other hydraulic cylinder can generate a fluid pressure difference depending upon the rolling state of the vehicle, enabling a stabilizer bar to generate a resilient force, whereby the deterioration of a roll-motion restricting effect can be made smaller, than in the case where the two hydraulic cylinders are disabled to normally function. <IMAGE></p> |
