A suspension includes a jounce bumper, and a striker. A spring biases the knuckle toward a first position. One of the spring and the jounce bumper is disposed forward of a kingpin axis of the knuckle and the other of the spring and the jounce bumper is disposed rearward of the kingpin axis. When in a first position, the spring is a first spring length. When in a second position, the spring is shorter than in the first position and the jounce bumper contacts the striker. When in a third position, the spring is shorter than in the second position and the jounce bumper is compressed against the striker to be shorter than in the second position. When moving between the second and third positions, the spring and jounce bumper impart moments on the knuckle that approximately balance each other to maintain a desired caster angle.

A suspension includes a jounce bumper, and a striker. A spring biases the knuckle toward a first position. One of the spring and the jounce bumper is disposed forward of a kingpin axis of the knuckle and the other of the spring and the jounce bumper is disposed rearward of the kingpin axis. When in a first position, the spring is a first spring length. When in a second position, the spring is shorter than in the first position and the jounce bumper contacts the striker. When in a third position, the spring is shorter than in the second position and the jounce bumper is compressed against the striker to be shorter than in the second position. When moving between the second and third positions, the spring and jounce bumper impart moments on the knuckle that approximately balance each other to maintain a desired caster angle.

A hydraulic ride height actuator system for providing variation of a ride height at a front end of a vehicle is provided includes a strut and an actuator including a piston and a housing axially movable with respect to the piston. The housing is fastened to an upper end of the strut. The piston and the housing define a hydraulic chamber. An increase in a volume of the hydraulic chamber forces the housing upward to vary the ride height.

A bump stop assembly for a UTV with a frame attachment, a shock absorber attachment, two panels, a shock absorber and a bracket. The frame attachment is coupled to the frame of the UTV and the shock absorber attachment is coupled to the shock absorber. The two panels extend between the frame attachment and the shock attachment. The bracket is coupled to the trailing arm of the suspension system of the UTV. The bump plate bracket has a bump plate located to contact the shock absorber when a force applied to the suspension system causes the suspension system to reach a predetermined level of a capacity of the suspension system to absorb. The bump plate transfers a portion of the force applied to the shock absorber. The shock absorber is configured to absorb energy transferred to the bump stop assembly by the force applied to the suspension system.

An electrically powered suspension system includes: an actuator that generates a load for damping vibration of the vehicle body; an information acquisition part that acquires information on a sprung state amount and a road surface state; a target load calculation part that calculates a first target load related to skyhook control based on the sprung state amount and calculates a second target load related to preview control based on the road surface state; and a load control part. The target load calculation part is further configured to calculate a third target load related to virtual spring force control based on a stroke position and to calculate a combined target load into which the first target load, the second target load, and the third target load have been combined. The load control part performs load control of the actuator using the combined target load.

A bump stop assembly for a UTV with a frame attachment, a shock absorber attachment, two panels, a shock absorber and a bracket. The frame attachment is coupled to the frame of the UTV and the shock absorber attachment is coupled to the shock absorber. The two panels extend between the frame attachment and the shock attachment. The bracket is coupled to the trailing arm of the suspension system of the UTV. The bump plate bracket has a bump plate located to contact the shock absorber when a force applied to the suspension system causes the suspension system to reach a predetermined level of a capacity of the suspension system to absorb. The bump plate transfers a portion of the force applied to the shock absorber. The shock absorber is configured to absorb energy transferred to the bump stop assembly by the force applied to the suspension system.

A bump stop assembly for a UTV with a frame attachment, a shock absorber attachment, two panels, a shock absorber and a bracket. The frame attachment is coupled to the frame of the UTV and the shock absorber attachment is coupled to the shock absorber. The two panels extend between the frame attachment and the shock attachment. The bracket is coupled to the trailing arm of the suspension system of the UTV. The bump plate bracket has a bump plate located to contact the shock absorber when a force applied to the suspension system causes the suspension system to reach a predetermined level of a capacity of the suspension system to absorb. The bump plate transfers a portion of the force applied to the shock absorber. The shock absorber is configured to absorb energy transferred to the bump stop assembly by the force applied to the suspension system.

A shock absorber arrangement for a vehicle suspension contains a shock absorber having a damper cap and a piston rod, and a supplementary spring which is arranged on the piston rod opposite the shock absorber and has an outer surface facing the damper cap and an inner surface facing the piston rod, and is configured for damping the movement of the shock absorber in the direction of the piston rod on contact with the damper cap. The outer surface and/or the inner surface is at least partially coated with a lubricant.

In a riding mower having a frame supported on front and rear wheels, a mower deck supported beneath the frame, a chair on said frame and a source of motive power also supported on said frame and including an improved suspension system with an articulating front axle that substantially isolates the front wheels from the frame of the lawnmower to thereby dampen vibrations transmitted to the operator as the vehicle traverses the ground.

A suspension system for a dual-axle wheels assembly, including a sub-frame, a first arm connected to the sub-frame and rotatable with respect to the sub-frame about a first axis, a first connector connected to the first arm and having a first connector axis about which a first wheel rotates when connected to the first connector, the first connector axis is parallel to the first axis, a second arm connected to the sub-frame and rotatable with respect to the sub-frame about a second axis that is parallel to the first axis, a second connector connected to the second arm and having a second connector axis about which a second wheel rotates when connected to the second connector, the second connector axis is parallel to the second axis, and a motion restrainer comprising a spring and a damper and interconnecting the first arm and the second ram.