A vehicle height adjustment device includes a changer, a vehicle height controller, and a malfunction detector. The changer is drivable when supplied with a current and configured to change a relative position of a body of a vehicle relative to an axle of a wheel of the vehicle. The vehicle height controller is configured to perform such control that a target current set based on the relative position is supplied to the changer so as to control a vehicle height, which is a height of the body of the vehicle. The malfunction detector is configured to detect a failure to make the target current flow to the changer.

A bicycle having a wheel height adjustment structure according to an exemplary embodiment of the present invention includes: a bicycle frame; a hanger where a dropout is formed and rotatably coupled to one side of the frame with respect to a hinge; and an adjusting portion that adjusts a height of the wheel that is engaged to the dropout by rotating the hanger at a predetermined angle.

Systems and methods for modifying an attitude of a vehicle are disclosed. A user selects a trailer mode for a vehicle body. The selected trailer mode has a corresponding configuration. The vehicle determines one or more features about a trailer based on the selected trailer mode. The vehicle determines a location of a trailer hitch needed to achieve the configuration corresponding to the selected trailer mode. The location is based on the one or more features about the trailer. The vehicle actuates at least one active component in the vehicle's active suspension system to change the attitude of the vehicle body so as to cause the trailer hitch to be located in the determined location thereby causing the vehicle body to be in the selected trailer mode.

A vehicle lowering system having a cargo surface with an adjacent pivoting arm is connected to a vehicle at a pivot point. The pivoting arm moves between a raised and a lowered position by an actuator that is affixed to a frame and the pivoting arm. The frame has an upper portion and a lower portion that provides structure for the portion of the frame that is beyond the pivot point and actuator. The pivot arm has a spindle that holds and allows a wheel to rotate. The spindle has an axis that is always located above the cargo surface. The actuator is movable between an extended position and a retracted position. When the actuator moves between the extended and retracted position, the pivoting arm moves the vehicle between a raised and a lowered position.

An adjustment system and method for adjusting a chassis property of a motor vehicle wherein an understeering sensitivity of the motor vehicle is increased upon detecting that a trailer has been coupled to the motor vehicle. A detection unit operates to detect when a trailer is attached or coupled to the motor vehicle.

An apparatus is provided for raising and lowering a vehicle that is supported by a wheel suspended from a frame of the vehicle by a suspension component. The apparatus includes a linear actuator that is vertically oriented to move the wheel of the vehicle relative to the frame of the vehicle. A compression device is arranged to compress the suspension component of the vehicle in response to movement of the wheel by the linear actuator.

A shock absorber device for a vehicle, the shock absorber device comprising a shock absorber and a lifting device, the lifting device being configured to adjust a length of the shock absorber along the axis between a second length and the first length, the second length being less than the first length, wherein the lifting device has a released configuration wherein the lifting device allows the first part and the second part to axially move with regard to each other along the axis and an engaged configuration wherein the lifting device axially couples the first part and the second part together.

A liftable rear suspension system of an amphibious vehicle is provided, including a differential gear installed inside a vehicle body frame, and a brake disc installed on the inner side of a hub of a vehicle wheel, with a brake arranged on an outer edge of the brake disc and a flange plate fixed on the inner side of the brake disc. A universal joint arm is rotatably installed on the periphery of one end, close to the vehicle body frame, of the flange plate through a bearing. The flange plate is connected to an output shaft of the differential gear through a cage universal joint. A worm gear is rotatably installed on the periphery of one end, stretching out of the vehicle body frame, of the output shaft through a bearing. A pair of bearing seats are installed on the vehicle body frame through an installation rack.

Methods and apparatus to facilitate loading and/or unloading a vehicle are disclosed. An example apparatus includes interface circuitry, machine readable instructions, and programmable circuitry to at least one of instantiate or execute the machine readable instructions to cause a suspension system to raise a front of a vehicle to a raised position, and cause the suspension system to lower a rear of the vehicle to a lowered position, the front in the raised position and the rear in the lowered position to slant the vehicle to facilitate loading or unloading the vehicle, and prevent the vehicle from having a driving speed or acceleration that satisfies a threshold when the rear is in the lowered position and the front is in the raised position.

A lift axle system which selectively lowers (and raises) an axle. When wheels of the lift axle system are lowered to the ground, the wheels effectively work to reduce the load supported by the original axles. A percentage of the weight of the rear of the towable vehicle is transferred to the attachment point to its tractor, that is, to the front of the towable vehicle. This helps to better balance the load, making the vehicle more stable on the road. The lift axle system is easy to operate and extends the life of the base system.