A method of controlling a work vehicle including a steering cylinder operating a steering wheel by hydraulic oil supplied thereto, a steering member receiving an input for operating the steering wheel, and a steering valve unit which is connected to the steering member and supplies the hydraulic oil to the steering cylinder, the method includes: obtaining a speed of the work vehicle and a steering angle of the steering wheel; and decreasing a correction factor for correcting a deviation amount of actual steering angle information of the steering wheel with respect to target information as information on a target steering angle of the steering wheel with respect to an operation amount of the steering member when the speed of the work vehicle increases in a case where the steering angle of the steering wheel obtained based on the steering angle is in a predetermined range from a neutral position.

The present invention discloses a drive-by-wire electro-hydraulic steering system based on a double-winding motor and a hybrid control method. The steering system includes a steering wheel (1), a steering column assembly, a road sense assembly, an electro-hydraulic power-assisted module, a double-winding motor power-assisted module (28), a steering control unit, an electromagnetic clutch (8), a steering tie rod (17), a steering trapezoid (13) and steering wheels (12). The steering system can be switched among various steering work modes according to work conditions of a vehicle, meets steering requirements under various work conditions, uses a work mode that two sets of windings of the double-winding motor work at the same time, and has a motor winding redundancy function. When one set of windings fails, the other set of windings can drive the motor to provide power-assisted torque.

A steering system for an articulated truck. The articulated truck is formed of a tractor and a trailer and an articulation joint. The steering system includes a hydraulic cylinder, with a cylinder barrel and a piston. The steering system provides for changes in angle between the tractor and the trailer. The hydraulic cylinder includes a snubbing tube projecting into the cylinder barrel. A hydraulic fluid passage opens into the cylinder barrel within the snubbing tube. The snubbing tube includes a main slot and a plurality of channels each extending between an interior and an exterior of the snubbing tube. The plurality of channels have a cross sectional area smaller than a cross sectional area of the main slot. When the articulated truck is steered, the piston moves in the cylinder barrel and the snubbing tube dampens the movement to prevent forces generated by the piston damaging the articulated truck.

An independent suspension system includes two suspension oil cylinders, respectively arranged between wheels at two sides and a frame: and a steering mechanism, configured to be driven by a steering booster oil cylinder to drive the wheels at two sides to turn. The independent system also includes two swing links arranged corresponding to the wheels at two sides, an end at one side of each of the swing links is hinged to a wheel hub of the wheel at the corresponding side via a spherical hinge, and an end at another side of each of the swing links is hinged to a fixing member fixed below a main speed reducer via two spherical hinges respectively along a fore-and-aft direction. A crane having the independent suspension system is further provided.

An independent suspension system includes two suspension oil cylinders, respectively arranged between wheels at two sides and a frame: and a steering mechanism, configured to be driven by a steering booster oil cylinder to drive the wheels at two sides to turn. The independent system also includes two swing links arranged corresponding to the wheels at two sides, an end at one side of each of the swing links is hinged to a wheel hub of the wheel at the corresponding side via a spherical hinge, and an end at another side of each of the swing links is hinged to a fixing member fixed below a main speed reducer via two spherical hinges respectively along a fore-and-aft direction. A crane having the independent suspension system is further provided.

A series hydraulic hybrid system for a vehicle may have: a hydraulic circuit with a first hydraulic displacement unit in fluid communication with a second hydraulic displacement unit, a hydraulic actuator, and a hydraulic accumulator assembly. The hydraulic accumulator assembly is selectively in fluid communication with the hydraulic circuit via at least one controllable circuit valve. The hydraulic accumulator assembly is selectively in fluid communication with the hydraulic actuator via at least one controllable actuator valve, such that the hydraulic accumulator assembly is configured to be selectively fluidly connected with and to be selectively fluidly disconnected from the hydraulic actuator via the at least one actuator valve independently of a control position of the at least one circuit valve. A method of operating the system is also described.

A series hydraulic hybrid system for a vehicle may have: a hydraulic circuit with a first hydraulic displacement unit in fluid communication with a second hydraulic displacement unit, a hydraulic actuator, and a hydraulic accumulator assembly. The hydraulic accumulator assembly is selectively in fluid communication with the hydraulic circuit via at least one controllable circuit valve. The hydraulic accumulator assembly is selectively in fluid communication with the hydraulic actuator via at least one controllable actuator valve, such that the hydraulic accumulator assembly is configured to be selectively fluidly connected with and to be selectively fluidly disconnected from the hydraulic actuator via the at least one actuator valve independently of a control position of the at least one circuit valve. A method of operating the system is also described.

A powertrain system includes an electric generator, a compressor, a water cooling module including a water pump, an electronic fan, a steering pump, a pneumatic module including an air pump, a transmission device, and an electric motor. The electric motor is configured to drive the electric generator, the compressor, the water pump, the electronic fan, the steering pump, and the air pump to work through the transmission device. The present invention further provides an electric vehicle with the powertrain system.

A vehicle adaptive steering control apparatus includes a front wheel steering mechanism having a right wheel steering portion and a left wheel steering portion. A left front wheel rotatably is coupled to the left wheel steering portion. A right front wheel rotatably coupled to the right wheel steering portion. A controller in electronic communication with a steer-by-wire steering wheel assembly and the front wheel steering mechanism operates the front wheel steering mechanism to turn the left front wheel and the right front wheel in accordance with Ackerman steering geometry. The controller is also configured to calculate toe angle adjustments for the right wheel steering portion relative to the left wheel steering portion and make the toe angle adjustments to right wheel steering portion and the left wheel steering portion during turning and steering movements effected by the right wheel steering portion and the left wheel steering portion.

A power steering fluid filter assembly having a housing defining an interior chamber, an upstream end and downstream end. The housing is substantially cylindrical having a substantially circular cross-section and longitudinal axis and at least one filter element through which fluid flowing through said housing passes. A plurality of inlet nozzles, each of which are selectively removable at the upstream end of the housing, the inlet nozzles having commonly sized cylindrical protrusions for fitting within the housing and differentially sized hose barbs for fitting within differentially sized hoses feeding power steering fluid to the housing. A plurality of outlet nozzles each of which are selectively removable at the downstream end of the housing, the outlet nozzles having commonly sized cylindrical protrusions for fitting within the housing and differentially sized hose barbs for fitting within differentially sized hoses through which power steering fluid exiting the housing passes. The inlet and outlet nozzles are releasably retained at the ends of the housing by, for example, removable clips, threads, or snap rings.