What is the principle of hydraulic power steering?
1 Answers
The working principle of hydraulic power steering is: 1. In the neutral position (when the steering wheel is not turned). The oil from the pump returns to the oil tank through the internal passage of the steering gear. 2. During power steering, the oil from the pump enters the cycloidal pinwheel meshing pair (metering motor) through the servo valve, pushing the rotor to follow the steering wheel's rotation. Depending on the steering angle, direction, and quantity of the steering wheel, the hydraulic oil is directed into the left or right chamber of the cylinder, pushing the guide wheel to achieve power steering. The oil from the other side of the cylinder returns to the oil tank through the servo valve. 3. Manual steering, when the engine is off, the steering wheel is manually operated to drive the rotor of the metering motor through the valve core, pull pin, and linkage shaft inside the steering gear. The metering motor then pumps hydraulic oil into the cylinder, pushing the guide wheel to achieve manual steering.