The invention relates to the field of engineering vehicles, and discloses an engineering vehicle hydraulic system, a control method and an engineering vehicle. When a driver is prejudged to have a braking intention, an engine is controlled to stop oil injection in advance, even if a handle quickly returns to a neutral position, the rotating speed of the engine is instantly increased, due to the fact that the oil injection of the engine is stopped, therefore, when the handle returns to the neutral position, the engine does not provide power any more, the rotating speed of the engine cannot exceed the hydraulic braking rotating speed limit value, the engine can be effectively utilized to reduce the vehicle speed, the rotating speed of the engine can be effectively prevented from exceeding the hydraulic braking rotating speed limit value, the engine is effectively protected, the safety and reliability of hydraulic braking are improved, and the illusion that engine faults are caused to a driver due to engine vibration and noise increase caused by engine rotation speed increase in the braking process is avoided.

    本发明涉及工程车辆领域,公开了一种工程车辆液压系统、控制方法及工程车辆,在预判驾驶员有刹车意图时,控制发动机提前停止喷油,即使手柄快速回到中位会使发动机转速瞬间升高,但由于发动机已停止喷油,因此手柄回到中位的过程中发动机不再提供动力,不会使发动机的转速超出液压制动转速限值,不仅能够有效利用发动机倒拖降低车速,还能够有效避免发动机转速超过液压制动转速限值,从而对发动机进行有效保护,提高了液压制动的安全性和可靠性,避免制动过程中发动机转速升高使发动机震动和噪音增大而给驾驶员造成发动机故障的错觉。


    Access

    Download


    Export, share and cite



    Title :

    Engineering vehicle hydraulic system, control method and engineering vehicle


    Additional title:

    一种工程车辆液压系统、控制方法及工程车辆


    Contributors:
    CAO DONGMING (author) / JIA SHUAISHUAI (author) / ZHOU CHANGFEI (author) / LI QI (author) / ZHANG CHANGCHENG (author) / FU PENG (author) / YAO DONGLEI (author) / XU GUIYONG (author) / HE HUCHENG (author) / GU XIAOHAI (author)

    Publication date :

    2021-12-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



    Steering hydraulic system of engineering vehicle and engineering vehicle

    ZHANG SHUJIE / LU ZHEN / HU JIANFENG | European Patent Office | 2021

    Free access

    Hydraulic control system and engineering vehicle

    LIU FEIXIANG / LI SHIHUI / LIU WEI et al. | European Patent Office | 2020

    Free access

    Hydraulic walking control system for engineering vehicle

    WANG XIANGJUN / GONG JUN / WU XIWEN et al. | European Patent Office | 2015

    Free access

    Hydraulic braking system, hydraulic braking system control method and engineering vehicle

    HU YONG / WEI DEPING / LU ZHAOHAI et al. | European Patent Office | 2022

    Free access

    Hydraulic suspension control system and engineering vehicle

    WU XIAOJUN / LI YAAN / ZHANG ERJUN | European Patent Office | 2023

    Free access