Acceleration limiting for a vehicle
    1.
    发明申请
    Acceleration limiting for a vehicle 有权
    车辆加速度限制

    公开(公告)号:US20050256627A1

    公开(公告)日:2005-11-17

    申请号:US10846014

    申请日:2004-05-14

    IPC分类号: B60T1/10 B60T7/12 B60W30/14

    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。

    Method for active engine stop of a hybrid electric vehicle
    2.
    发明申请
    Method for active engine stop of a hybrid electric vehicle 有权
    混合动力汽车的主动发动机停止方法

    公开(公告)号:US20050255968A1

    公开(公告)日:2005-11-17

    申请号:US10846144

    申请日:2004-05-14

    摘要: A method for providing an active engine stop of the engine of a hybrid electric vehicle. The method utilizes the electric machine to oppose the and rapidly stop the rotation of the engine at a controlled rate. The method includes the calculation of an input speed reduction trajectory using the engine speed when the active engine stop request is made and a predetermined speed reduction interval. The predetermined speed reduction interval is preferably less than a time from the active stop request to the shutoff command to the electric machine. The method provides rapid deceleration of the engine, particularly through the powertrain resonance speed, thereby reducing the amount of vibration energy dissipated through the powertrain and vehicle chassis. The method also removes the electric machine torques from the engine prior to achieving zero engine speed in order to avoid imparting a negative engine speed or counter-rotation of the engine. The method preferably comprises a complementary series of software control functions that allow the vehicle to actively stop the engine.

    摘要翻译: 一种用于提供混合动力汽车的发动机的主动发动机停止的方法。 该方法利用电机以受控的速度对抗并快速停止发动机的旋转。 该方法包括当进行主动发动机停止请求时,使用发动机转速计算输入减速轨迹和预定的减速间隔。 预定的减速间隔优选地小于从主动停止请求到关闭指令到电机的时间。 该方法特别通过动力传动系共振速度来提供发动机的快速减速,从而减少通过动力系和车辆底盘消散的振动能量。 该方法在实现零发动机转速之前也消除了发动机的电机扭矩,以避免赋予发动机负的发动机转速或反转。 该方法优选地包括允许车辆主动停止发动机的互补的一系列软件控制功能。

    Multi-stage compression ignition engine start
    5.
    发明申请
    Multi-stage compression ignition engine start 有权
    多级压缩点火发动机起动

    公开(公告)号:US20050252474A1

    公开(公告)日:2005-11-17

    申请号:US10846013

    申请日:2004-05-14

    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。

    Hydraulic clutch state diagnostic and control
    7.
    发明申请
    Hydraulic clutch state diagnostic and control 有权
    液压离合器状态诊断和控制

    公开(公告)号:US20050256625A1

    公开(公告)日:2005-11-17

    申请号:US10845995

    申请日:2004-05-15

    IPC分类号: F16D48/02 F16D48/06 G06F17/00

    摘要: Clutch engagement is preferably determined in accordance with monitored pressure conditions within a clutch control chamber. Clutch slip is monitored and information respecting clutch engagement inferred therefrom is stored for subsequent retrieval and use in a redundant slip based clutch engagement determination. Clutch slip is also monitored for information respecting clutch disengagement for use in a redundant slip based clutch disengagement determination.

    摘要翻译: 离合器接合优选地根据离合器控制室内的监视压力条件来确定。 监测离合器滑移,并且从其推断的关于离合器接合的信息被存储用于随后的取回和使用在基于冗余滑移的离合器接合确定中。 还监视离合器滑移以获得关于离合器分离的信息,以用于基于冗余滑移的离合器分离确定。

    Two clutch fixed-ratio exit control for multi-mode hybrid drive
    9.
    发明申请
    Two clutch fixed-ratio exit control for multi-mode hybrid drive 有权
    用于多模混合动力驱动的两个离合器固定比例出口控制

    公开(公告)号:US20050080541A1

    公开(公告)日:2005-04-14

    申请号:US10686176

    申请日:2003-10-14

    摘要: An electrically variable transmission has a pair of clutches and a first mode when the first clutch is applied and the second clutch released, a second mode when the second clutch is applied and the first clutch released, and a fixed-ratio mode when both clutches are applied. Upshifts and downshifts out of fixed-ratio are accomplished in accordance with a control based upon shift confidence factors determined in accordance with proportional and derivative input speed error quantities. Additional authority limits are placed upon the shift confidence factors in accordance with output speed derivative quantities. Additional override downshift control is provided in accordance with additional input speed condition determinations.

    摘要翻译: 电动变速器具有一对离合器和第一模式,当施加第一离合器并且第二离合器释放时,施加第二离合器并且第一离合器释放时的第二模式以及当两个离合器是两个离合器时的固定比模式 应用。 根据基于根据比例和微分输入速度误差量确定的换档置信因数的控制来实现固定比率之间的升档和降档。 根据输出速度导数量,对换挡置信因子进行额外的权限限制。 根据额外的输入速度条件确定提供额外的超控降档控制。

    Method for automatic traction control in a hybrid electric vehicle
    10.
    发明申请
    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:US20050256629A1

    公开(公告)日:2005-11-17

    申请号:US10846016

    申请日:2004-05-14

    IPC分类号: B60L15/20 G06F17/00

    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,以便减少车轮旋转条件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。