Hydraulic Steering System Oil Pump Truck

How does a Power Steering Pump work?

Generally, vane pump is composed of a pump body with double arc curves in the inner chamber, a slotted rotor, vanes and other parts. Some are installed on the flywheel housing at the rear end of the engine, and are also driven by timing gears. When the engine is running, the booster pump rotor is driven to rotate, and the vanes move outward along the blade grooves under the action of centrifugal force, and are close to the inner wall of the pump body. During the rotation of the rotor, due to the continuous increase and decrease of the closed volume between the vanes , to realize the process of oil absorption and oil pressure. Every time the rotor rotates once, it completes oil absorption and oil pressure twice. There is also a safety valve in the pump body to limit the maximum pressure. When the external load of the Steering System increases, causing the oil pressure to rise to a certain value, the safety valve opens to unload the load. A throttle valve and a flow control valve are also installed in the pump body to ensure that the displacement of the booster pump is basically stable.

Critical parameters:

Structural layout scheme of constant flow steering afterburner
·According to the combination and relative position of the mechanical steering gear, steering control valve, and steering power cylinder, there are three layout schemes as follows
(1) Integral type
·The mechanical steering gear and steering power cylinder are designed as one unit and assembled with the steering control valve.
(2) Semi integral type
·The steering control valve is combined with a mechanical steering gear as a component, while the power cylinder is treated as a separate component
(3) Steering booster
·The mechanical steering gear is a stand-alone component, while the control valve and power cylinder are combined into one component