Method of testing motor torque integrity in a hybrid electric vehicle
    2.
    发明授权
    Method of testing motor torque integrity in a hybrid electric vehicle 有权
    在混合动力电动汽车中测试电机转矩完整性的方法

    公开(公告)号:US07368886B2

    公开(公告)日:2008-05-06

    申请号:US10846000

    申请日:2004-05-14

    IPC分类号: H02P1/04

    CPC分类号: G01R31/343

    摘要: A method of testing an electric motor that is adapted to provide a desired electric motor output torque to a vehicle powertrain system comprising an engine and the electric motor which are operatively and selectively coupled to a transmission. The method includes the steps of determining an initial motor speed of the electric motor, determining a motor torque command as a function of the initial motor speed, applying the motor torque command to the electric motor to produce an output torque from the electric motor, measuring a resultant motor speed of the electric motor and establishing a motor status as a function of the resultant motor speed. The method may be implemented as a computer control and diagnostic algorithm.

    摘要翻译: 一种测试电动机的方法,该电动机适于向包括发动机和电动机的车辆动力系统系统提供期望的电动机输出转矩,所述发动机和电动机可操作地和选择性地联接到变速器。 该方法包括以下步骤:确定电动机的初始电动机速度,确定作为初始电动机转速的函数的电动机转矩指令,将电动机转矩指令应用于电动机以产生来自电动机的输出转矩,测量 电动机的合成电动机速度,并且根据所得到的电动机速度建立电动机状态。 该方法可以被实现为计算机控制和诊断算法。

    Acceleration limiting for a vehicle
    3.
    发明授权
    Acceleration limiting for a vehicle 有权
    车辆加速度限制

    公开(公告)号:US07236871B2

    公开(公告)日:2007-06-26

    申请号:US10846014

    申请日:2004-05-14

    IPC分类号: G06F19/00

    摘要: A method and apparatus to control acceleration of a vehicle equipped with an electrically variable transmission and including a regenerative braking system, each are operably connected to a vehicle driveline. The method and apparatus include determining which one of a preselected shift selector position for the transmission is commanded, and determining operator demand for acceleration, using inputs from throttle pedal and brake pedal. Vehicle acceleration is measured, and magnitude of commanded torque transferred from the electrically variable transmission and the regenerative braking system to the vehicle driveline is controlled based upon the commanded preselected shift selector position, the operator demand for acceleration, and the measured vehicle acceleration.

    摘要翻译: 一种用于控制配备有电可变变速器并且包括再生制动系统的车辆的加速度的方法和装置,每个都可操作地连接到车辆传动系。 该方法和装置包括使用来自油门踏板和制动踏板的输入来确定用于变速器的预选换档选择器位置中的哪一个,并且确定操作者对加速度的要求。 测量车辆加速度,并根据所指定的预选换档位置,操作者对加速度的要求以及所测量的车辆加速度来控制从电动变速器和再生制动系统传递到车辆传动系的指令扭矩的大小。

    Diagnostic method for a torque control of an electrically variable transmission
    5.
    发明授权
    Diagnostic method for a torque control of an electrically variable transmission 有权
    电动变速器转矩控制的诊断方法

    公开(公告)号:US06976388B2

    公开(公告)日:2005-12-20

    申请号:US10846142

    申请日:2004-05-14

    摘要: A condition of impaired speed and torque control of a parallel electrically variable transmission due to factors beyond nominal modeling and estimation errors is diagnosed under low speed operation. The transmission includes at least one electric machine and a motor torque controller for regulating the transmission input speed and output torque. The motor torque controller includes an open-loop control path based on predetermined torques and accelerations and a closed loop control path based on input speed error. The presence of a larger than expected closed-loop correction magnitude, combined with low output speed and one or more other conditions is used to diagnose a condition of potential torque error, in which case the transmission control is altered to prevent unwanted operation.

    摘要翻译: 在低速运行下诊断由于超出标称建模和估计误差的因素而导致的平行电动变速器的速度和转矩控制受损的条件。 变速器包括至少一个电机和用于调节变速器输入速度和输出转矩的电动机转矩控制器。 电动机转矩控制器包括基于预定转矩和加速度的开环控制路径和基于输入速度误差的闭环控制路径。 使用大于预期的闭环校正幅度以及低输出速度和一个或多个其他条件的存在来诊断潜在的扭矩误差的情况,在这种情况下改变传输控制以防止不期望的操作。

    Method for automatic traction control in a hybrid electric vehicle
    6.
    发明授权
    Method for automatic traction control in a hybrid electric vehicle 有权
    混合动力汽车自动牵引力控制方法

    公开(公告)号:US07222014B2

    公开(公告)日:2007-05-22

    申请号:US10846016

    申请日:2004-05-14

    IPC分类号: G06F7/00

    摘要: A method for providing traction control in vehicle powertrain systems is particularly adapted for traction control in a powertrain system of a hybrid electric vehicle comprising an internal combustion engine, an electric machine and a transmission that is operatively coupled to the electric machine and the engine and adapted to provide a transmission torque output in response to a transmission torque input received as a torque output from either or both of the engine and the electric machine. The method is adapted to utilize conventional traction control and engine control hardware, software and communication standards to implement traction control. In one embodiment of the invention, a conventional traction controller is used to detect a wheel spin condition and provide a plurality of first output torque command messages in response thereto. The plurality of first output torque command messages are used to obtain a torque reduction which is applied to a reference output torque to obtain a corresponding plurality of traction control output torque commands for the powertrain system during the wheel spin condition. A rate limit may also be applied to control the rate of change between successive ones of the traction control output torque commands in order to reduce the possibility of extension of the wheel spin condition, or recurrence of another wheel spin condition. Each traction control output torque command may be used to determine an associated traction control engine torque output command and traction control electric machine torque output command.

    摘要翻译: 用于在车辆动力系统中提供牵引力控制的方法特别适用于混合动力车辆的动力系统中的牵引力控制,所述混合动力车辆包括内燃机,电机和可操作地耦合到电机和发动机的变速器, 以响应于作为从发动机和电机中的一个或两者输出的扭矩接收的传动转矩输入来提供传动转矩输出。 该方法适用于利用传统的牵引力控制和发动机控制硬件,软件和通信标准来实现牵引力控制。 在本发明的一个实施例中,传统的牵引控制器用于检测车轮旋转状态,并响应于此提供多个第一输出转矩指令消息。 多个第一输出转矩指令消息用于获得施加到参考输出转矩的转矩降低,以在车轮旋转状态期间获得用于动力系统的相应的多个牵引控制输出转矩指令。 也可以应用速率限制来控制牵引控制输出转矩指令中连续的转矩指令之间的变化率,以便减少车轮旋转状态的延长或另一个车轮旋转状态的再现。 每个牵引力控制输出转矩指令可用于确定相关的牵引力控制发动机转矩输出指令和牵引力控制电机转矩输出指令。

    Coordinated regenerative and engine retard braking for a hybrid vehicle
    8.
    发明授权
    Coordinated regenerative and engine retard braking for a hybrid vehicle 有权
    用于混合动力车辆的协调再生和发动机延迟制动

    公开(公告)号:US07131708B2

    公开(公告)日:2006-11-07

    申请号:US10845994

    申请日:2004-05-14

    IPC分类号: B60T8/64

    摘要: A hybrid vehicle includes a powertrain having a retarded diesel engine, an electric machine and energy storage system. The engine and motor are operatively coupled through one or more planetary gearsets and selective coupling paths in accordance with application and release of various torque transfer devices to a drivetrain via an output. Regenerative and retarded engine braking are coordinated to provide priority to energy return to an energy storage system in accordance with predetermined power flow limits. Power flow in excess of the limits are handled by increased engine retard braking contributions via engine speed increases.

    摘要翻译: 混合动力车辆包括具有延迟柴油发动机的动力系,电动机和储能系统。 发动机和电动机通过一个或多个行星齿轮组和选择性联接路径可操作地联接,根据各种扭矩传递装置通过输出向传动系的应用和释放。 协调再生和延迟发动机制动,以便根据预定的功率流量限制优先重新向能量储存系统返回。 超过限制的动力流量通过发动机转速增加而增加发动机延迟制动贡献来处理。