The present disclosure relates to a load-sense system such as a load-sense steering system that operates in a static load-sense mode for low flows and operates in a dynamic load-sense mode for high flows.

A pilot neutralizing system of a work vehicle may include a pilot neutralizer. The work vehicle may include a first frame portion and a second frame portion. The work vehicle has an actuating assembly used to pivot the first frame portion relative to the second frame portion. The pilot neutralizer is electrically coupled to a controller receiving a signal indicative of an articulation position. The pilot neutralizer is hydraulically coupled between an operator control member and a steering valve to selectively change a pilot signal at the steering valve. The pilot signal is used to switch the steering valve to change a direction of a hydraulic fluid flowing from the steering valve to the actuating assembly. When the articulation position reaches a cushion region during steering, the pilot neutralizer is de-energized or energized by the controller to change the pilot signal at the steering valve to resist the actuating assembly from moving.

A self-centering double ended hydraulic steering cylinder that uses no electronics and a method of making the same. The self-centering double ended hydraulic steering cylinder has an elongated housing having end caps at opposing ends of the housing, wherein first and second rod portions are slidably disposed through the end caps. A piston is slidably disposed within the housing, the first and second rod portions extending from the piston, the piston defining first and second hydraulic fluid chambers within the housing. On each opposing end cap is a coiled spring for urging the piston toward a neutral position with the housing. A miniscule passage is formed into the piston so that hydraulic fluid flow through the piston that allows the springs to push the piston back to the neutral position.

A work machine, includes steering cylinders that drive a front frame with respect to a rear frame. A directional control valve changes a supply amount of hydraulic fluid to the steering cylinders. A steering wheel operates the directional control valve. A variable capacity pump discharges the hydraulic fluid to the directional control valve. Cylinder stroke sensors are provided for detecting the turning angle of the front frame with respect to the rear frame. A controller reduces the discharge flow rate of the variable capacity pump on the basis of the detection values of the cylinder stroke sensors.

In a power steering system employing an end of travel system including valve actuating rings disposed about a Pitman arm shaft, a device is provided for setting the positions of the rings on the shaft. The device includes a fixed member positioned about, and fixed against movement along, a longitudinal axis perpendicular to the shaft's rotational axis and a movable member that moves along the longitudinal axis relative to the fixed member. The movable member defines a pin at one end configured for engagement with the circumferential ends of the actuating rings. A positioning force applied to one of the members causes the movable member to move between set and reset positions in which the pin engages corresponding ends of the actuating rings during rotation of the shaft and a running position in which the pin remains disengaged from the ends of the actuating ring during rotation of the shaft.

An adjustable steering stop for an axle assembly of a vehicle includes a housing configured to be coupled to a steering knuckle or a frame of the axle assembly, a shaft received within the housing and movable relative thereto, the shaft being configured to engage a stop to limit movement of the steering knuckle relative to the frame, and a locking assembly coupled to the housing and reconfigurable between (a) an engaged configuration in which the locking assembly limits movement of the shaft relative to the housing and (b) a disengaged configuration in which the locking assembly permits the shaft to move relative to the housing. The locking assembly includes an actuator configured to reconfigure the locking assembly between the engaged and disengaged configurations. A controller is configured to control the actuator to reconfigure the locking assembly between the engaged configuration and the disengaged configuration.

An improved power steering assembly is provided. The power steering assembly includes an end-of-travel mechanism and a valve cartridge that is actuated by left and right actuator rings of the end-of-travel mechanism, the actuator rings extending partially around an output shaft. The actuator rings can be individually set for the desired end-of-travel relief to limit the maximum system pressure when the steering assembly approaches the desired axle stop setting. The valve cartridge provides an end-of-travel function and a pressure relief function and is in fluid communication with the left and right pressure chambers to recirculate hydraulic fluid in the event of a power off condition.

An adjustable steering stop includes a chassis stop configured to be coupled to a chassis member of a vehicle and a knuckle stop configured to be coupled to a steering knuckle. The chassis stop and the knuckle stop together define a steering limit location where the knuckle stop contacts the chassis stop. The adjustable steering stop further includes an adjustment actuator coupled to one of the chassis stop or the knuckle stop to move the chassis stop or the knuckle stop thereby changing the steering limit location.

A vehicle driver warning device includes: a steering angle sensor (SAS) producing steering signals representative of a real time angle of rotation of a steering column (RTARSC), a control unit receiving said signals and generating a timer activation signal (TAS) when an absolute value of the RTARSC is equal to a maximum value and a timer deactivation signal (TDS) when the absolute value is less than the maximum value after being equal to the maximum value, a timer receiving the TAS and starting a preset period of time countdown and interrupting said countdown if the TDS is received before the countdown ends, an alarm module generating an alarm perceptible to the driver upon receiving an alarm activation signal (AAS), wherein the control unit generates and communicates the AAS to the alarm module at the end of the preset period of time if the countdown has not been interrupted.

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.