A method of controlling an air suspension system may include a first process of determining, by a controller, whether a current situation is a parking situation that requires reduced air pressure in an air spring, a second process of maximizing, by the controller, damping force of a shock absorber when the current situation is the parking situation that requires the reduced air pressure in the air spring, and a third process of reducing air pressure in the air spring, by the controller, by bypassing compressed air stored in the air spring to a reservoir tank.

An axle lift assembly includes a vehicle configured to support a load. A slide assembly has a member that is movable along a longitudinal extent of the vehicle. The slide assembly is operable to secure the member relative to the vehicle at a select position along the longitudinal extent of the vehicle. A swing arm has a first end pivotally coupled with the member and an opposing second end biased away from the vehicle. The swing arm is configured to support a wheel assembly with a tire for contacting a ground surface. An actuator is operably interconnecting the member and the swing arm for raising the wheel assembly toward the vehicle to lift the tire away from the ground surface. The slide assembly and the actuator are configured to respectively adjust longitudinal and vertical positions of the wheel assembly relative to the vehicle for accommodating a condition of the load.

A damping control system for a vehicle having a suspension located between a plurality of ground engaging members and a vehicle frame includes at least one adjustable shock absorber having an adjustable damping profile.

A status tracking system for tracking a suspension system or a physical condition of the parts in a steering system in vehicles. The status tracking system includes a sensor unit connected with the body of the part, and a processor unit configured to connect with the sensor unit in a manner receiving the measurements made by the sensor unit as input. The processor unit is configured to obtain measurement information from the measurements it receives, generate status information by classifying the measurement information according to a reference value in a memory unit, and display the status information on a user interface.

A control system (100, 200) for a vehicle suspension system of a vehicle (900) is disclosed. The control system is configured to: determine that the vehicle is operating in a precondition state in dependence on an actuator power supply status; and output a first damping control signal to an adaptive damping system of the vehicle in dependence on the determination. The first damping control signal is configured to cause the adaptive damping system to activate a first damping control mode in which a predetermined level of damping is provided to the vehicle.

Realized is a technique for estimating a state quantity of a vehicle, which technique is applicable to estimation of a vehicle weight and allows an increase in accuracy and speed of the estimation. A state quantity estimating device includes a data storing section (101), a predictive quantity computing section (102), an obtaining section (107), a Kalman gain computing section (103), an estimated quantity computing section (104) which calculates an estimated state quantity and estimated covariance, and a process noise covariance correcting section (106) which corrects process noise covariance. The estimated state quantity, the estimated covariance, and the process noise covariance, each of which has been calculated or corrected, are written in the data storing section (101) as a state quantity, state covariance, and process noise covariance, respectively, and are used in a next computation for estimating a state quantity.

A damping control system for a vehicle having a suspension located between a plurality of ground engaging members and a vehicle frame includes at least one adjustable shock absorber having an adjustable damping profile.

A damping control system is provided for an off-road recreational vehicles having a suspension located between a ground engaging member and a vehicle frame and including at least one adjustable shock absorber having an adjustable damping characteristic based on an input from a sensor.

A damping control system is provided for an off-road recreational vehicles having a suspension located between a ground engaging member and a vehicle frame and including at least one adjustable shock absorber having an adjustable damping characteristic based on an input from a sensor.

Provided is an automatically controlled shock stiffening system. The automatically controlled shock stiffening system may include an electronic control unit receiving sensor input which automatically stiffens and softens a shock during operation. An override button is provided to immediately stiffen the shock in response to a user activating the override button. The system may include a main body with an oil flow aperture and a flow control system that operates to restrict the flow of oil between the reservoir and the shock. The automatically controlled shock stiffening system may be coupled between the reservoir and the bridge of the shock and operates to restrict flow of the oil in order to stiffen the shock immediately in response to activation of the override button.