A method for operating an electronically controllable air suspension system of a vehicle comprises determining a first pressure value in a first air spring which is assigned to a first axle of the motor vehicle, and determining a second pressure value in a second air spring which is assigned to a second axle of the motor vehicle. A differential pressure value is calculated therefrom. A first nominal value for the air volume flow as a function of the differential pressure value is determined. At least one first air spring valve assigned to the first air spring is actuated so that the first nominal value for the air volume flow is set by the first air spring valve.

An apparatus for estimating vehicle weight using a vehicle height adjusting device is provided. The apparatus includes a vehicle height adjusting device that raises or lowers four positions of front left (FL) and right (FR) sides and rear left (RL) and right (RR) sides of a vehicle body, respectively. A vehicle height controller operates the vehicle height adjusting device to raise or lower the FL and FR sides and the RL and RR sides of the vehicle body. A weight estimating unit measures time required for raising or lowering the vehicle body or operating speed of the vehicle body and calculates an expected vehicle weight value by comparing the time required or the operating speed with a preset reference data.

A gearing arrangement for an actuator device for height adjustment of a vehicle body is provided, having a drive wheel and an output wheel, which are rotatably connected to each other by a tooth system formed on each. A blocking element is arranged on the output wheel to block a rotational movement, and a guide track having a blocking stop integrated therein and at least one deflection position; the guide track is connected to a pin section, which is movable to a limited degree and which is provided in order to be guided along the guide track upon rotation of the output wheel and to block a rotational movement of the output wheel upon penetrating into the blocking stop. By using the at least one deflection position, the rotative position of the blocking element can be detected during guiding of the pin section by the at least one deflection position.

A bogie positioning system and method for a work machine. The bogie positioning system adapted to selectively engage a wheel of a work machine to a ground surface through a bogie assembly wherein the bogie assembly may have a front wheel coupled to a rear wheel through a bogie coupling mechanism. The bogie coupling mechanism comprising a beam with a rotary joint. The rotary joint allowing the front wheel to rotate about a rotary axis relative to the rear wheel. The beam is coupled to a chassis of the work machine with at least one actuator coupled to the beam. A control unit is in communication with the bogie assembly, a user input interface, and a plurality of sensors, generating command signals to actuate the actuator based on the input signals, thereby selectively engaging the front wheel or the rear wheel with the ground surface.

A method of setting the rides height of the air springs and air pressures of the tires, including receiving a user selected setting or preprogrammed ride height settings; sensing a ride height of, and air pressure within, each of the air springs; determining the weight of the vehicle based on the sensed ride height and air pressure within each of the air springs; providing specified ride heights for the left and right front and rear air springs; determining specified air pressures for the left and right front and rear tire inflators, based upon the determined weight of the vehicle and selected setting; inflating the left and right front and rear air springs to the specified ride heights; and inflating the left and right front and rear tires to the specified air pressures.

An autonomous robotic vehicle includes a chassis, wheels movably mounted to the chassis by a suspension system, and a vehicle pose system. The vehicle pose system includes a ride height sensor system, a processor, and memory. The sensor system is configured to measure wheel displacement of the wheels relative to the chassis. The sensor system includes ride height sensors that determine wheel positions of the wheels with respect to the chassis as the vehicle travels along a surface. The memory has instructions stored thereon which, when executed by the processor cause the vehicle pose system to determine a plane of the surface corresponding to the wheel positions so that the pose system can determine a pose of the vehicle based on an angle of the surface with respect to the vehicle.

A powertrain for a vehicle may include a vehicle chassis, a rotatable vehicle drive axle, at least one selectively movable electric propulsion motor having a rotatable motor shaft rotatable about an axis defined by the rotatable vehicle drive axle, a motor actuator connected to the at least one selectively movable electric propulsion motor, and a control system in communication with the motor actuator. The control system may include a memory device in communication with the control system having instructions that when executed by the control system causes the control system to receive at least one input from at least one sensor and instruct the motor actuator to rotate the at least one selectively movable electric propulsion motor based on the at least one input from the sensor.

A method of automatically adjusting the ride height of a vehicle each time the vehicle is in a particular location is provided, where the automatic ride height adjustment is based on location and ride height information previously gathered from a user.

A method for operating a pressure control system having a multi-stage compressor includes providing a multiply compressed pressure medium by the multi-stage compressor for filling a pressure medium reservoir or pressure medium chambers of the pressure control system. Providing the multiply compressed pressure medium includes (i) providing, by a first compression stage, a pre-compressed pressure medium and additionally compressing, at least by a second compression stage, the pre-compressed pressure medium, and/or (ii) introducing an already-compressed charging pressure medium into an intermediate volume between the first compression stage and the second compression stage of the multi-stage compressor and further compressing the charging pressure medium at least by the second compression stage. The charging pressure medium simultaneously passes via a control line to a control input of a shut-off valve that interacts with the first compression stage, such that a charging pressure of the charging pressure medium predefines a control pressure.

An air management system for a vehicle having a supply tank, a system controller integrated with the supply tank, a first pneumatic circuit pneumatically connected to the system controller, and a second pneumatic circuit pneumatically connected to the system controller. The system controller adjusts independently air pressure of the first pneumatic circuit and the second pneumatic circuit without establishing pneumatic communication between the first and second pneumatic circuits. The system controller establishes pneumatic communication between the first and second pneumatic circuits when the system controller is not adjusting independently the air pressure of the first pneumatic circuit and the second pneumatic circuit.