Diagnostic method for a torque control of an electrically variable transmission
    1.
    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。

    Coordinated regenerative and engine retard braking for a hybrid vehicle
    3.
    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。

    Method of providing electric motor torque reserve in a hybrid electric vehicle
    4.
    发明授权
    Method of providing electric motor torque reserve in a hybrid electric vehicle 有权
    在混合动力汽车中提供电动机转矩储备的方法

    公开(公告)号:US07264570B2

    公开(公告)日:2007-09-04

    申请号:US11414799

    申请日:2006-05-01

    IPC分类号: B60K1/02

    摘要: A method of operating a vehicle powertrain system comprising an electric motor and transmission where the electric motor is operably and selectively coupled to the transmission and adapted to provide an output torque contribution thereto, and the electric motor has a predetermined maximum motor output torque and a predetermined minimum motor output torque which are used to determine a range of permissible control points for at least one transmission control parameter. The method includes establishing a motor torque reserve by performing at least one of decreasing the predetermined maximum motor output torque to a maximum reserved motor output torque and increasing the minimum motor output torque to a minimum reserved motor output torque, wherein the maximum reserved motor output torque and the minimum reserved motor output torque are used in place of the predetermined maximum motor output torque and the predetermined minimum motor output torque, respectively, to determine the range of permissible control points for the at least one transmission control parameter.

    摘要翻译: 一种操作车辆动力系统的方法,包括电动机和变速器,其中电动机可操作地和选择性地联接到变速器并且适于提供对其的输出转矩贡献,并且电动机具有预定的最大电动机输出转矩和预定的 用于确定用于至少一个变速器控制参数的允许控制点的范围的最小电动机输出转矩。 该方法包括通过执行将预定最大电动机输出转矩减小到最大保留电动机输出转矩并将最小电动机输出转矩增加到最小保留电动机输出转矩中的至少一个来建立电动机转矩储备,其中最大保留电动机输出转矩 并且分别使用最小保留电动机输出转矩来代替预定的最大电动机输出转矩和预定的最小电动机输出转矩,以确定用于至少一个变速器控制参数的允许控制点的范围。

    Method of providing electric motor torque reserve in a hybrid electric vehicle
    7.
    发明授权
    Method of providing electric motor torque reserve in a hybrid electric vehicle 有权
    在混合动力汽车中提供电动机转矩储备的方法

    公开(公告)号:US07090613B2

    公开(公告)日:2006-08-15

    申请号:US10846153

    申请日:2004-05-15

    IPC分类号: B60K1/02 B60K1/00 G06F17/00

    摘要: A method of operating a vehicle powertrain system comprising an electric motor and transmission where the electric motor is operably and selectively coupled to the transmission and adapted to provide an output torque contribution thereto, and the electric motor has a predetermined maximum motor output torque and a predetermined minimum motor output torque which are used to determine a range of permissible control points for at least one transmission control parameter. The method includes establishing a motor torque reserve by performing at least one of decreasing the predetermined maximum motor output torque to a maximum reserved motor output torque and increasing the minimum motor output torque to a minimum reserved motor output torque, wherein the maximum reserved motor output torque and the minimum reserved motor output torque are used in place of the predetermined maximum motor output torque and the predetermined minimum motor output torque, respectively, to determine the range of permissible control points for the at least one transmission control parameter.

    摘要翻译: 一种操作车辆动力系统的方法,包括电动机和变速器,其中电动机可操作地和选择性地联接到变速器并且适于提供对其的输出转矩贡献,并且电动机具有预定的最大电动机输出转矩和预定的 用于确定用于至少一个变速器控制参数的允许控制点的范围的最小电动机输出转矩。 该方法包括通过执行将预定最大电动机输出转矩减小到最大保留电动机输出转矩并将最小电动机输出转矩增加到最小保留电动机输出转矩中的至少一个来建立电动机转矩储备,其中最大保留电动机输出转矩 并且分别使用最小保留电动机输出转矩来代替预定的最大电动机输出转矩和预定的最小电动机输出转矩,以确定用于至少一个变速器控制参数的允许控制点的范围。

    Multi-stage compression ignition engine start
    9.
    发明授权
    Multi-stage compression ignition engine start 有权
    多级压缩点火发动机起动

    公开(公告)号:US07028657B2

    公开(公告)日:2006-04-18

    申请号:US10846013

    申请日:2004-05-14

    IPC分类号: F02N11/00

    摘要: A powertrain includes a diesel compression engine and an electric machine operatively coupled thereto and effective to rotate the engine during engine cranking. Cold engine cranking is accomplished in a staged manner including a first stage wherein the engine is cranked to a first speed below the resonant speed of the coupled engine and electric machine combination for a first duration and thereafter cranked to a second speed above the resonant speed for a second duration. Transition out of cranking at the first and second speeds is accomplished when relative combustion stability is demonstrated. Cranking at the first or second speed is aborted when excessive crank times or if low battery voltages are observed. A third stage is included wherein the engine is cranked to a third speed below the engine idle speed. Transition out of cranking at the third speed is accomplished when relative combustion stability is demonstrated, whereafter normal engine control takes over.

    摘要翻译: 动力系包括柴油压缩发动机和可操作地联接到其上的电机,并且在发动机起动期间有效地使发动机旋转。 冷发动机起动以分阶段方式实现,包括第一阶段,其中发动机起动至低于联合发动机和电机组合的共振速度的第一速度,并且之后起动至高于谐振速度的第二速度 第二个持续时间。 当相对燃烧稳定性得到证实时,可以以第一和第二速度转换起动。 在超过曲柄时间或观察到电池电压不足时,以第一或第二速度起动。 包括第三级,其中发动机起动至低于发动机怠速转速的第三速度。 当相对燃烧稳定性得到证明时,在第三速度下转变为起动,此后正常的发动机控制接管。

    Method of testing motor torque integrity in a hybrid electric vehicle
    10.
    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。