The invention relates to a leakage fault diagnosis method, device and equipment, a storage medium and a vehicle, and relates to the technical field of hybrid electric vehicles. The method comprises the following steps: when a target vehicle meets a leakage fault diagnosis condition of a fuel evaporation system, acquiring braking information of the target vehicle; when the braking information is used for representing that the target vehicle is in the pre-stop state, stopping of an engine is forbidden, and the engine output power of the target vehicle is determined according to the information of the environment where the target vehicle is located; and when the running speed of the target vehicle is smaller than a first preset speed, leakage fault diagnosis operation is conducted on the fuel evaporation system according to the output power of the engine, so that a leakage fault diagnosis result of the fuel evaporation system is obtained. Therefore, according to the leakage fault diagnosis condition, the pre-stop state, the driving speed and the determined engine output power, leakage fault diagnosis operation is carried out on the fuel evaporation system, so that an accurate leakage fault diagnosis result of the fuel evaporation system is obtained.

    本申请涉及一种泄漏故障诊断方法、装置、设备、存储介质及车辆,涉及混合动力汽车技术领域。该方法包括:当目标车辆满足燃油蒸发系统的泄漏故障诊断条件时,获取目标车辆的制动信息;当制动信息用于表示目标车辆处于预停车状态时,禁止发动机停机,并根据目标车辆所处的环境信息确定目标车辆的发动机输出功率;当目标车辆的行驶速度小于第一预设速度时,根据发动机输出功率对燃油蒸发系统进行泄漏故障诊断操作,以得到燃油蒸发系统的泄漏故障诊断结果。这样,根据泄漏故障诊断条件、预停车状态和行驶速度,以及确定的发动机输出功率,对燃油蒸发系统进行泄漏故障诊断操作,从而得到准确的燃油蒸发系统的泄漏故障诊断结果。


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    Title :

    Leakage fault diagnosis method and device, equipment, storage medium and vehicle


    Additional title:

    泄漏故障诊断方法、装置、设备、存储介质及车辆


    Contributors:
    HU YUANLI (author) / LI HAOJI (author) / YANG GUANLONG (author) / YAN QINSHAN (author)

    Publication date :

    2024-04-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen



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