Steering control system and method of diesel fork lift truck

Abstract

The invention discloses a steering control system and method of a diesel fork lift truck. The steering control system comprises an engine control device, a controller, an emergency steering switch, amanual switch, a steering pipeline pressure switch, a main power supply relay and an emergency steering device, wherein engine control device is connected with the controller, the emergency steering switch, the manual switch, the steering pipeline pressure switch and the main power supply relay are connected with the controller, and the emergency steering device is connected with the main power supply relay. According to the steering control system of the diesel fork lift truck, through monitoring a conventional steering system and the engine control device, when the controller does not obtainany engine information, mistaken starting caused by the fact that a main engine is not started or just started and steering pressure is not established is avoided; and when the engine breaks down, the emergency steering device can be rapidly activated, and the problem that disappearance of the steering pressure is delayed is solved.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a steering control system and method for an internal combustion forklift. Background technique [0002] With the growing need for vehicles to use electric power for steering and the increasing degree of automation relying on electric power for steering, the robustness of electronically controlled steering should be improved to ensure the required safety. On the one hand, if there is a sudden lack of steering support during driving, it will make it difficult for the driver to operate. On the other hand, the driver’s active steering control system fails during autonomous operation. in safe condition. [0003] During the use of internal combustion forklifts, the normal steering power source will fail. At this time, the driver cannot control the driving direction of the vehicle, which will easily bring many safety hazards. At present, the way for internal combustion forklift...

AI Technical Summary

Problems solved by technology

On the one hand, if there is a sudden lack of steering support during driving, it will make it difficult for the driver to operate. On the other hand, the driver’s active steering control system fails during autonomous operation. in safe condition

[0003] During the use of internal combustion forklifts, the normal steering power source will fail. At this time, the driver cannot control the driving direction of the vehicle, which will easily bring many safety hazards. At present, the way for internal combustion forklifts to control the failure of the power source is simply to pass Steering line pressure judges whether the steering power source is invalid. On the one hand, this method will mistakenly activate the emergency steering system when the vehicle is stopped or the engine is just started, resulting in energy waste; on the other hand, this method does not close the activation of the emergency steering control system. function, does not comply with relevant industry regulations, therefore, an intelligent emergency steering control system is urgently needed for internal combustion forklifts during driving

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