The invention discloses a control method for an electric vacuum pump of a new energy automobile. The method comprises the following steps: firstly, an automobile external air pressure value and a vacuum tank internal air pressure value are detected respectively, then a plateau control strategy or a non-plateau control strategy is entered according to the automobile external air pressure value, then an on-gear control strategy and an off-gear control strategy are carried out according to key gears, finally, the vacuum air leakage amount is calculated, and whether a vacuum pipeline fault occursor not is judged. The method has the following advantages: the external air pressure of the automobile is detected, different control strategies are adopted according to different air pressure environments, the vacuum pump is controlled according to the air pressure in the vacuum pump, and energy waste and pump body damage caused by constant work of the vacuum pump are avoided; and fault judgmentand fault emergency functions are realized.

    本发明为一种新能源汽车电动真空泵控制方法,首先分别检测汽车外部气压值和真空罐内气压值,再根据汽车外部气压值进入高原控制策略或非高原控制策略,然后根据钥匙档位进行on档控制策略和off档控制策略,最后计算真空漏气量,判断是否发生真空管路故障。本发明的优点是:检测汽车外部气压,根据不同的气压环境采用不同的控制策略,通过根据真空泵内气压对真空泵进行控制,避免出现真空泵一直工作,造成能源浪费和泵体损坏;具有故障判定及故障应急功能。


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    Title :

    Control method for electric vacuum pump of new energy automobile


    Additional title:

    一种新能源汽车电动真空泵控制方法


    Contributors:
    SONG JIANXUN (author) / YIN HAO (author)

    Publication date :

    2020-06-09


    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



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