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What is the working principle of a hydraulic power steering gear?

1 Answers

DeSerenity

07/30/25 3:41am

The working principle of a hydraulic power steering gear is: 1. In the neutral position, the oil from the pump returns to the oil tank through the internal components of the steering gear; 2. During power steering, the oil from the pump enters the cycloidal gear pair through the follow-up valve, driving the rotor to follow the rotation of the steering wheel. Depending on the angle and direction of the steering wheel's rotation, a specific amount of hydraulic oil is directed into the left or right chamber of the oil cylinder, pushing the guide wheel to achieve power steering. The function of the hydraulic power steering gear is to amplify the force transmitted from the steering wheel to the steering linkage and to change the direction of force transmission. The steering gear, also known as the steering box, is a set of gear mechanisms that convert rotational motion into linear motion and also serves as a reduction transmission device in the steering system.

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