Method for improving shift quality in an automatic transmission
    1.
    发明授权
    Method for improving shift quality in an automatic transmission 有权
    改善自动变速箱换档质量的方法

    公开(公告)号:US08690730B2

    公开(公告)日:2014-04-08

    申请号:US13061335

    申请日:2009-07-27

    IPC分类号: B60W10/04

    摘要: A method is provided for improving shift quality in an automatic transmission. In many automatic transmissions, the shift quality during lift foot upshifts is unsatisfying. Generally, two types of complaints concerning shift quality are known: harsh feel right after the shift order and bump at the synchronization of the shift. In order to provide an automatic transmission which overcomes these two problems, a first and a second positive torque requests are initiated on upshift coasts. This measure improves the global shift feel by controlling the engine toque level at shift order and at synchronization: the engine torque level at the beginning of the gear shift is smoothly decreased to reduce the initial bump and is controlled at the synchronization to reduce the amplitude of underlap when the clutch capacity is rising.

    摘要翻译: 提供了一种用于改善自动变速器中的换档质量的方法。 在许多自动变速器中,升降脚升档期间的换档质量不能令人满意。 一般来说,有两种关于换档质量的抱怨是:在换档顺序之后的严酷感觉和在换档同步的碰撞。 为了提供一种克服这两个问题的自动变速器,在升档滑行上启动第一和第二正转矩请求。 该措施通过在换档顺序和同步控制发动机转矩水平来提高全局换档感觉:换档开始时的发动机转矩水平平滑降低,以减少初始凸轮并在同步时控制,以减小 当离合器容量上升时,会发生冲击。

    METHOD FOR IMPROVING SHIFT QUALITY IN AN AUTOMATIC TRANSMISSION
    2.
    发明申请
    METHOD FOR IMPROVING SHIFT QUALITY IN AN AUTOMATIC TRANSMISSION 有权
    改善自动变速箱换档质量的方法

    公开(公告)号:US20110154931A1

    公开(公告)日:2011-06-30

    申请号:US13061335

    申请日:2009-07-27

    IPC分类号: F16H61/04

    摘要: A method is provided for improving shift quality in an automatic transmission. In many automatic transmissions, the shift quality during lift foot upshifts is unsatisfying. Generally, two types of complaints concerning shift quality are known: harsh feel right after the shift order and bump at the synchronization of the shift. In order to provide an automatic transmission which overcomes these two problems, a first and a second positive torque requests are initiated on upshift coasts. This measure improves the global shift feel by controlling the engine toque level at shift order and at synchronization: the engine torque level at the beginning of the gear shift is smoothly decreased to reduce the initial bump and is controlled at the synchronization to reduce the amplitude of underlap when the clutch capacity is rising.

    摘要翻译: 提供了一种用于改善自动变速器中的换档质量的方法。 在许多自动变速器中,升降脚升档期间的换档质量不能令人满意。 一般来说,有两种关于换档质量的抱怨是:在换档顺序之后的严酷感觉和在换档同步的碰撞。 为了提供一种克服这两个问题的自动变速器,在升档滑行上启动第一和第二正转矩请求。 该措施通过在换档顺序和同步控制发动机转矩水平来提高全局换档感觉:换档开始时的发动机转矩水平平滑降低,以减少初始凸轮并在同步时控制,以减小 当离合器容量上升时,会发生冲击。

    Hydraulic clutch and method for determining an adaptive clutch fill volume of the hydraulic clutch
    3.
    发明授权
    Hydraulic clutch and method for determining an adaptive clutch fill volume of the hydraulic clutch 有权
    液压离合器和用于确定液压离合器的自适应离合器填充容积的方法

    公开(公告)号:US08843289B2

    公开(公告)日:2014-09-23

    申请号:US13177900

    申请日:2011-07-07

    IPC分类号: G06F7/00 F16D48/06

    摘要: At least a method is provided learning a characteristic filling volume of a hydraulic clutch. The method includes, but is not limited to applying a pressure pulse to the hydraulic clutch when the clutch is in a disengaged state and determining an inflection event at an input or at an output of a torque path in which the hydraulic clutch is situated. A characteristic filling volume of the hydraulic clutch is derived from the determined inflection event. Furthermore, a method is provided for learning a characteristic return spring pressure of the hydraulic clutch, for engaging the hydraulic clutch and corresponding devices for carrying out these methods.

    摘要翻译: 至少提供一种学习液压离合器的特征填充量的方法。 该方法包括但不限于当离合器处于分离状态时向液压离合器施加压力脉冲并且确定在液压离合器所在的扭矩路径的输入或输出处的拐点事件。 液压离合器的特征填充量由确定的拐点事件导出。 此外,提供了一种用于学习液压离合器的特征复位弹簧压力的方法,用于接合液压离合器和用于执行这些方法的相应装置。