Hydraulic hub motor assisting differential motion power-assisted steering system

Abstract

The invention provides a hydraulic hub motor assisting differential motion power-assisted steering system aims to solve the problems that a traditional hydraulic power-assisted steering system cannot conduct active control, and power-assisted steering portability and safety under the failure condition cannot be ensured only through the traditional hydraulic power-assisted steering system. A hydraulic control unit achieves diversified working modes such as the traditional direct movement mode, the steering hydraulic cylinder power-assisted mode, the direct movement pump assisting driving mode, the steering uniting power-assisted mode and the steering hydraulic motor power-assisted model by controlling valve set element movement according to the demands of a driver and the travelling states of a vehicle. The system provided by the invention can continue to provide steering assisted power under the condition of failure of the traditional hydraulic power-assisted steering system so as to ensure portability and safety of the power-assisted steering system; and through the hydraulic control unit, the power-assisted steering system is actively controlled, the power-assisted characteristic is optimized, and the performance of the power-assisted steering system is effectively improved.

Description

technical field [0001] The present invention relates to differential power steering systems, and more particularly, the present invention relates to hydraulic hub motor assisted differential power steering systems. Background technique [0002] Heavy-duty commercial vehicles often run on roads with low adhesion coefficients such as mud, water, and sand, and the driving conditions of the vehicles are complex and changeable, so it is easy to cause insufficient driving force and drive wheel slippage. The use of hydraulic auxiliary drive technology can solve this problem. By installing a hydraulic hub motor in the front wheel hub of the vehicle, it can provide auxiliary drive force to the vehicle in a timely manner, making the vehicle change from a traditional rear-wheel drive vehicle to a four-wheel drive vehicle. At the same time, due to the heavy weight and complex road conditions of heavy-duty commercial vehicles, higher requirements are placed on the portability, safety and...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problems that the traditional hydraulic power steering system of heavy commercial vehicles cannot be actively controlled, and the traditional hydraulic power steering system alone cannot guarantee the portability and safety of power steering in case of failure, and provides a Hydraulic hub motor assisted differential power steering

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