An agricultural machine includes a frame, a ground-engaging element, a suspension system that movably supports the frame relative to the ground-engaging element, wherein the suspension system is configured to apply, for a given displacement of the frame relative to the ground-engaging element, a force based on a force-to-displacement relationship. A control system is configured to receive an input indicative of an operational state of the agricultural machine during operation on a terrain, and automatically control the suspension system to adjust the force-to-displacement relationship of the suspension system based on the operational state.

An air suspension system and a method of controlling the same. The air suspension system includes air springs, each having a first input port, the air springs adjusting heights of left and right front and rear wheels, a data collection unit configured to receive data regarding a vehicle state, a solenoid valve configured to control the flow of compressed air, a double-acting cylinder whose piston rod is moved to guide the flow of the compressed air in left and right directions, so that the compressed air is supplied to the air springs through the solenoid valves connected to left and right sides of the double-acting cylinder, a drive unit having a drive motor to move the piston rod, and a sub-control unit configured to set a driving position and driving acceleration, based on the vehicle state, and to operate the solenoid valve and the drive unit.

A system for controlling vehicle ride height include a suspension controller. The suspension controller is coupled to a motion sensor attached to a chassis of a vehicle and additional motion sensors each attached to a suspension member of the vehicle that pivots relative to the chassis. The suspension controller receives motion sensor data from the motion sensors and determines relative angular position of each suspension member as a function of motion sensor data received from the motion sensor attached to the chassis and motion sensor data received from the motion sensor attached to the suspension member. The suspension controller adjusts an air suspension based on the relative angular position. Other embodiments are described and claimed.

A method for controlling a suspension system of a vehicle, as well as suspension systems, and a vehicle including a suspension system is provided. The suspension system may include at least one adjustable damping device that is controlled via a control signal, such as from a controller of the suspension system, in order to dynamically adjust the damping characteristic of the damping device. The control signal may be generated on the basis of at least one of current driving dynamics data and optically recorded information about an area of a ground surface.

An active control system for vehicle suspensions includes a detection module which detects a vehicle running state and a front road condition by means of an advanced mode or a standard mode; a calculation module which comprehensively calculates, in combination with running data and dimensions of a vehicle and the front road condition data collected by the detection module and according to passenger comfort requirements, target data of adjustment; and an implementation module which adjusts a height of each suspension of the vehicle according to the target data obtained by the calculation module.

A communication and power transmission module includes a communication connection portion adapted for communicative coupling with an associated controller. A wireless power and communication portion is adapted for communicative coupling with an associated sensing device operatively associated with an associated suspension component and/or an associated wheel. The wireless power and communication portion is operable to communicate wireless data and/or signals to and/or from the associated sensing device and operable to wirelessly transmit power to the associated sensing device. Gas spring assemblies and vehicles including one or more of such communication and power transmission modules are also included.

A transportable fire training apparatus includes a trailer frame having a rear raised section at a rear end of the trailer frame and an unraised section at a middle portion of the trailer frame, a shell attached to the trailer frame and partitioned into a plurality of training rooms, a rear multi-axle wheel set disposed below, and attached to, the rear raised section of the trailer frame via an air ride suspension system that raises the trailer frame relative to the a rear multi-axle wheel set in response to pressurization of the air ride suspension system. The unraised section of the trailer frame rides substantially above the ground when the air ride suspension system is in a pressurized state and rests on the ground when the air ride suspension system is in an unpressurized state. A method for deploying and using the transportable fire training apparatus is also disclosed herein.

A system for generating air pressure in a hybrid vehicle, comprising an engine-driven air compressor (C1) configured to be selectively operated by an ICE engine, an electrically—driven air compressor (C2) configured to be operated by an electric motor, wherein said electric motor is supplied from the electric network, at least one air reservoir configured to store pressurized air and being configured to be connected directly or indirectly to both an outlet of the engine-driven air compressor (C1) and an outlet of the electrically-driven air compressor (C2), at least one electronic control unit (3, 3′) configured to control at least the electrically-driven air compressor (C2) according at least to a selected drive mode of the vehicle, wherein the electrically-driven air compressor (C2) is downsized compared to the engine-driven compressor (C1), and corresponding control methods.

A vehicle includes a chassis, a plurality of tractive assemblies coupled to the chassis, and a controller. Each tractive assembly includes a tractive element and an actuator coupled to the tractive element and configured to move the tractive element relative to the chassis. The controller is configured to control at least one of the actuators to vary a load supported by one of the tractive assemblies in response to an indication that a portion of a first tractive assembly of the plurality of tractive assemblies is disabled.

A method for identifying and/or controlling a coupling procedure between a towing vehicle and a vehicle trailer that is embodied as a semi-trailer includes determining a contact between the coupling plate of the towing vehicle and the fifth wheel plate of the semi-trailer by way of a change of an adjusting speed with which a distance between the at least one rear axle of the towing vehicle and the locking device of the coupling plate is increased. The towing vehicle comprises a coupling plate and the semi-trailer comprises a fifth wheel plate having a king pin that is fixed in the coupled state in a locking device of the coupling plate and the towing vehicle comprises a pneumatic level controlling device by way of which it is possible to set different distances between at least one rear axle of the towing vehicle and the locking device of the coupling plate.