The invention discloses a vehicle braking control method and system under a long downhill working condition. The method comprises the following steps that the vehicle slope working condition and the vehicle braking energy recovery attribute are obtained; when the vehicle does not have the braking energy recovery function or the vehicle has the braking energy recovery function but is in an energy recovery quit state, the operation working condition of the vehicle is obtained; when the vehicle required speed reduction is smaller than the preset speed reduction and the rear wheel brake disc temperature rise is smaller than the first preset temperature rise, hydraulic input of front and rear wheels is controlled to be cut off to enter a dynamic braking mode of preferentially braking the rear wheels; obtaining a dynamic braking mode exit condition satisfaction working condition; and when the dynamic braking mode quitting condition is met, the dynamic braking mode is controlled to quit, and a hydraulic braking mode for braking front and rear wheels simultaneously is entered. According to the vehicle brake control method under the long downhill working condition, the problem that the temperature rise of the front brake disc relative to the rear brake disc is too fast is effectively solved, and the situation that the temperature rise of the front brake disc is too high and influences the brake effect is avoided.

    本发明公开了一种长下坡工况下的车辆制动控制方法及系统,方法包括以下步骤:获取车辆坡行工况以及车辆制动能量回收属性;当车辆不具有制动能量回收功能或车辆具有制动能量回收功能但处于能量回收退出状态时,获取车辆的运行工况;当车辆需求减速小于预设减速并且后轮制动盘温升小于第一预设温升时,控制切断前后轮的液压输入进入优先制动后轮的动态制动模式;获取动态制动模式退出条件满足工况;当满足动态制动模式退出条件时,控制退出动态制动模式,进入前后轮同时制动的液压制动模式。本申请提供的一种长下坡工况下的车辆制动控制方法,有效解决前制动盘相对于后制动盘温升过快的问题,避免前制动盘温升过高影响制动效果。


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    Title :

    Vehicle braking control method and system under long downhill working condition


    Additional title:

    长下坡工况下的车辆制动控制方法及系统


    Contributors:
    WANG YONGLIN (author) / LIU BING (author) / ZHANG DEZHI (author) / GUO LIANG (author)

    Publication date :

    2022-12-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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