To minimize the decrease in the speed of vehicle height increase due to self-pumping under the influence of the damping force of a damping-force-generating part. A damping force variable shock absorber 150 has: a damping force variable mechanism 200 provided with a damping-force-generating part 220, a damping force variable actuator 220, and a damping force control unit 210 that controls the actions of the damping force variable actuator; and a vehicle height control mechanism 100 provided with a self-pumping mechanism 69 that uses vibration occurring with the traveling of the vehicle as motive force to pressurize hydraulic oil and push a spring 60, a vehicle height variable actuator 76 that switches the flow path of hydraulic oil pressured by self-pumping, and a vehicle height control unit 110 that controls the actions of the vehicle height variable actuator. The damping force control unit 210 executes step-by-step damping force variable control in which the damping force in a step of pushing the spring 60 during a period when the vehicle height is rising is set to be weaker than the damping force during a period when the vehicle height is not rising.
Damping force variable shock absorber
2024-12-04
Patent
Electronic Resource
English