Emergency steering control system and method

Abstract

The invention discloses an emergency steering control method and system. The emergency steering control method comprises the following steps that firstly, a working state signal of at least one of a vehicle steering main pump and an engine is obtained; secondly, based on the working state signal and a gear signal and a parking signal of a vehicle in the current state, whether an emergency steering control unit of the vehicle is started and provides steering power for a steering gear of the vehicle is judged. According to the emergency steering control method, according to the working state signal of the main pump or the engine, whether the main pump or the engine breaks down is judged, and if one of the main pump or the engine breaks down, the operation working condition of the vehicle is further judged according to the gear signal and the parking signal of the vehicle, and whether the emergency steering control unit of the vehicle is started and provides steering power for the steering gear of the vehicle is judged. By the adoption of the emergency steering control method, the emergency steering control system of the vehicle can be automatically started, emergency steering of the vehicle is achieved, and the travel safety of the vehicle is improved.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to an emergency steering control system and a control method. Background technique [0002] Heavy-duty vehicles generally have heavy axle loads. In order to make the steering light, a power assist unit is usually configured on the basis of the mechanical steering system, or for a full hydraulic steering system, the steering power is completely provided by the hydraulic assist unit. If the assist unit fails, the steering will change. It was so heavy that it couldn't even turn. [0003] The steering system of a vehicle generally includes a steering wheel 5', a steering gear 6', a steering cylinder 7', and a main pump 2'. The steering power of the vehicle comes from the main pump, which takes power from the engine. The pump works, and the main pump provides steering assistance to the steering system. Therefore, in addition to the conventional power assist unit, the mandatory s...

AI Technical Summary

Problems solved by technology

This mainly depends on the driving experience of the operator, and there is a relatively large safety hazard for inexperienced operators

[0010] In addition, considering the limitations of the overall layout of the vehicle, the power of the electric pump in the second emergency power steering method comes from the battery of the vehicle, and the capacity of the battery used for the vehicle is limited, and the power that the electric pump can provide is relatively small. It is only used in the emergency steering system with small displacement, but for the large displacement steering gear, due to the large oil flow required, it is impossible to realize emergency steering through the electric pump, and the use has limitations

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