Vehicle height adjustment apparatus
A vehicle height adjustment apparatus includes a rear wheel suspension spring that is disposed between a vehicle body and a tire wheel of a vehicle; a rear wheel damper that undergoes an extensional and contractional operation so as to move working oil to dampen vibration of the spring; a support member that supports one end portion of the spring, and moves relative to the damper to change the length of the spring; a jack chamber into which the working oil causing the support member to move relative to the damper flows by the extensional and contractional operation of the damper; a rear wheel electromagnetic valve that adjusts the amount of the working oil flowing into the jack chamber by the degree of opening of the electromagnetic valve; and control device that controls the degree of opening of the electromagnetic valve based on a weight exerted on the vehicle.
1. A vehicle height adjustment apparatus comprising:
a spring that is disposed between a body of a vehicle and a tire wheel of the vehicle;
a damper that undergoes an extensional and contractional operation so as to move working oil to dampen vibration of the spring;
a support member that supports one end portion of the spring, and moves relative to the damper to change a length of the spring;
a working oil chamber into which the working oil causing the support member to move relative to the damper flows by the extensional and contractional operation of the damper;
an electromagnetic valve that adjusts an amount of the working oil flowing into the working oil chamber by a degree of opening of the electromagnetic valve; and
a control unit that controls the degree of opening of the electromagnetic valve based on a weight exerted on the vehicle.
2. The vehicle height adjustment apparatus according to claim 1 ,
wherein the control unit changes upper and lower limits of the amount of working oil flowing into the working oil chamber based on the weight exerted on the vehicle.