The invention discloses a crawling starting control method and system of a hybrid power AT transmission, and the method comprises the steps: obtaining a whole vehicle message signal, when entering crawling state control, activating a crawling mode, and entering a clutch filling stage; after filling is completed, entering a speed building stage; judging that the crawling speed target is finished, and entering a constant-speed stage; after it is detected that the brake pressure rises and does not exceed the crawling state exit threshold value, a brake stage is started; after the brake pressure rises to a crawling state exit threshold value, exiting the crawling mode, and entering a parking stage; when starting state control is started, a starting mode is activated, and a clutch filling stage is started; after filling is completed, entering a speed building stage; judging that the slip of the gearbox starting clutch is smaller than a threshold value, and entering a combination stage; and after judging that the slip frequency of the gearbox starting clutch is 0, exiting the starting mode and entering a driving stage. In the control process, message information exchange with the whole vehicle needs to be continuously carried out, and a control instruction is sent to a hydraulic system in the gearbox for control.

    本发明公开了一种混合动力AT变速器的蠕行起步控制方法及系统,通过获取整车报文信号,进入蠕行状态控制时,激活蠕行模式,进入离合器填充阶段;填充完成后,进入建速阶段;判断蠕行车速目标完成,进入匀速阶段;检测刹车压力上升并且未超出蠕行状态退出阈值后,进入刹车阶段;刹车压力上升到蠕行状态退出阈值后退出蠕行模式,进入停车阶段;进入起步状态控制时,激活起步模式,进入离合器填充阶段;填充完成后,进入建速阶段;判断变速箱起步离合器滑差小于阈值,进入结合阶段;判断变速箱起步离合器滑差为0后,退出起步模式,进入行驶阶段。在控制过程中需要与整车不断进行报文信息交换,并向变速箱内部液压系统发送控制指令,进行控制。


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    Title :

    Crawling starting control method and system of hybrid power AT transmission


    Additional title:

    一种混合动力AT变速器的蠕行起步控制方法及系统


    Contributors:
    HE YANAN (author) / LIU YI (author) / HAO HAIYANG (author) / SHI YANLONG (author) / CHEN HAOXING (author) / PU WENJIE (author)

    Publication date :

    2023-03-03


    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



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