A hydraulic circuit, in particular to a hydraulic steering circuit for steering at least one vehicle axle, the hydraulic circuit including a first fluid path having a first end and a second end and providing fluid communication or selective fluid communication between the first end and the second end of the first fluid path; and a second fluid path providing fluid communication or selective fluid communication between the first end of the first fluid path and the second end (2) of the first fluid path, in parallel to the first fluid path or to a section thereof. In some aspects, the first fluid path includes a first hydraulic displacement unit; and the second fluid path includes at least a first proportional bypass control valve for controlling a bypass fluid flow in the second fluid path. The hydraulic steering circuit may be part of a driveline for a vehicle.

A cylinder with position feedback sensor, including a barrel (11), a piston rod (12) and piston (15). Markings (M) associated with a central portion of the piston rod (12C) are readable by a sensor (S). In practice, the freedom of slidable movement of the piston rod (12) is such that the markings are retained at all times entirely within the barrel (11) during use so that the external environment cannot influence (e.g. damage) the markings.

A cylinder with position feedback sensor, including a barrel (11), a piston rod (12) and piston (15). Markings (M) associated with a central portion of the piston rod (12C) are readable by a sensor (S). In practice, the freedom of slidable movement of the piston rod (12) is such that the markings are retained at all times entirely within the barrel (11) during use so that the external environment cannot influence (e.g. damage) the markings.

An apparatus for use in turning steerable vehicle wheels includes an axially movable steering member. The steering member turns the steerable vehicle wheels upon axial movement of the steering member, A connector arm connected to the steering member is movable with the steering member. A first fastener connects the connector arm to the steering member and prevents relative movement between the steering member and the connector arm. A second fastener connects the connector arm to the steering member.

An apparatus for use in turning steerable vehicle wheels includes an axially movable steering member. The steering member turns the steerable vehicle wheels upon axial movement of the steering member, A connector arm connected to the steering member is movable with the steering member. A first fastener connects the connector arm to the steering member and prevents relative movement between the steering member and the connector arm. A second fastener connects the connector arm to the steering member.

A hydraulic steering system 1 is described comprising a steering unit and a priority valve, said steering unit comprising a working port arrangement having two working ports, a supply port arrangement having a high pressure port and a low pressure port, a load sensing port, a main flow path having a main bleed and a metering device and being arranged between said high pressure port and said working port arrangement, an amplification flow path having an amplification bleed and being arranged between said high pressure port and said working port arrangement, said main bleed and said amplification bleed being controlled together by means of a steering handle and being closed in neutral position of said steering handle, wherein said priority valve comprises a priority outlet connected to said high pressure port of said steering unit, a valve element moveable in a priority direction to connect an inlet of said priority valve to said priority outlet, and a load sensing connection connected to said load sensing port of said steering unit, said priority outlet being connected to said load sensing connection via a priority valve bleed, a pressure at a point downstream said priority bleed acting on said valve element in said priority direction, wherein said load sensing port is connected to said low pressure port via a drain bleed being open in neutral position of said steering handle and closing upon actuation of said steering handle out of said neutral position.

A hydraulic steering system 1 is described comprising a steering unit and a priority valve, said steering unit comprising a working port arrangement having two working ports, a supply port arrangement having a high pressure port and a low pressure port, a load sensing port, a main flow path having a main bleed and a metering device and being arranged between said high pressure port and said working port arrangement, an amplification flow path having an amplification bleed and being arranged between said high pressure port and said working port arrangement, said main bleed and said amplification bleed being controlled together by means of a steering handle and being closed in neutral position of said steering handle, wherein said priority valve comprises a priority outlet connected to said high pressure port of said steering unit, a valve element moveable in a priority direction to connect an inlet of said priority valve to said priority outlet, and a load sensing connection connected to said load sensing port of said steering unit, said priority outlet being connected to said load sensing connection via a priority valve bleed, a pressure at a point downstream said priority bleed acting on said valve element in said priority direction, wherein said load sensing port is connected to said low pressure port via a drain bleed being open in neutral position of said steering handle and closing upon actuation of said steering handle out of said neutral position.

Provided is a work vehicle in which a connection member can be prevented from coming into contact with an obstacle while the work vehicle is traveling, without restricting the layout of the work vehicle. A work vehicle in which a power steering cylinder is mounted to a front axle case, wherein in the front axle case, a support part to which the power steering cylinder is mounted by a connection member, and a protruding part that protrudes from the support part so as to conceal the connection member when viewed from the front side of the work vehicle are formed.

Provided is a work vehicle in which a connection member can be prevented from coming into contact with an obstacle while the work vehicle is traveling, without restricting the layout of the work vehicle. A work vehicle in which a power steering cylinder is mounted to a front axle case, wherein in the front axle case, a support part to which the power steering cylinder is mounted by a connection member, and a protruding part that protrudes from the support part so as to conceal the connection member when viewed from the front side of the work vehicle are formed.

A hydraulic steering system (1) is described comprising a steering unit (3) and a pressure source (4), said steering unit (3) comprising a working port arrangement (L, R) having two working ports, a supply port arrangement having a high pressure port (P) and a low pressure port (5), a main flow path (7) having a main bleed (A1) and a metering device (8) and being arranged between said high pressure port (P) and said working port arrangement (L, R), an amplification flow path (9) having an amplification bleed (Au) and being arranged between said high pressure port (P) and said working port arrangement (L, R), said main bleed (A1) and said amplification bleed (Au) being controlled together by means of a steering handle (6) and being closed in neutral position of said steering handle, and said pressure source (4) having a variable displacement.