The invention relates to the technical field of vehicle control, particularly provides a hydraulic system fault diagnosis method, a control method of a vehicle driving system and a vehicle, and aims to solve the technical problem that fault diagnosis of a hydraulic system cannot be realized by an existing method. In order to achieve the purpose, the hydraulic system fault diagnosis method comprises the steps that the actual oil pressure, the maximum oil pressure threshold value and the minimum oil pressure threshold value output by an oil pump unit are obtained; whether the actual oil pressure is larger than the maximum oil pressure threshold value or smaller than the minimum oil pressure threshold value is judged; under the condition that the actual oil pressure is larger than the maximum oil pressure threshold value, it is determined that the hydraulic system is blocked; or under the condition that the actual oil pressure is smaller than the minimum oil pressure threshold value, it is determined that leakage exists in the hydraulic system. Thus, fault diagnosis of the hydraulic system is achieved, the accuracy of fault judgment of the hydraulic system is improved, and safe driving of a vehicle is facilitated.

    本发明涉及车辆控制技术领域,具体提供一种液压系统故障诊断方法、车辆驱动系统的控制方法及车辆,旨在解决现有方法无法实现液压系统故障诊断的技术问题。为此目的,本发明的液压系统故障诊断方法包括:获取油泵单元输出的实际油压、最大油压阈值和最小油压阈值;判断实际油压是否大于最大油压阈值,或实际油压是否小于最小油压阈值;在实际油压大于最大油压阈值的情况下,确定液压系统存在堵塞;或在实际油压小于最小油压阈值的情况下,确定液压系统存在泄漏。如此,实现了液压系统的故障诊断,提高了液压系统故障判断的准确性,有利于车辆的安全驾驶。


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    Title :

    Hydraulic system fault diagnosis method, control method of vehicle driving system and vehicle


    Additional title:

    液压系统故障诊断方法、车辆驱动系统的控制方法及车辆


    Contributors:
    GONG WENTAO (author) / LI JIQIANG (author) / BI LU (author) / XU SHILONG (author) / REN CHUANWEI (author) / LI XIAOLONG (author) / SHEN YONG (author)

    Publication date :

    2022-11-08


    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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