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    Method of determining the derivative of an input signal
    3.
    发明申请
    Method of determining the derivative of an input signal 有权
    确定输入信号的导数的方法

    公开(公告)号：US20050256919A1

    公开(公告)日：2005-11-17

    申请号：US10846018

    申请日：2004-05-14

    Applicant: William Cawthorne ,  Jy-Jen Sah

    Inventor： William Cawthorne ,  Jy-Jen Sah

    IPC: G01D1/10 ,  G01D3/028 ,  G01P15/16 ,  G06F7/38

    CPC classification number: G01D3/028

    Abstract: The derivative of a noise-containing input signal is determined by using an aliased derivative to periodically reset a filtered version of a normally determined derivative. The aliased derivative is calculated using a slower update or sampling rate than the normally determined derivative, and the filtered version of the normally determined derivative is reset to a reset value at each update of the aliased derivative. The reset value is based on a weighted sum of the aliased derivative and the filter output. The periodically reset filter output closely follows an idealized derivative of the input signal, substantially eliminating the phase delay introduced by conventional filtering.

    Abstract translation: 含噪声输入信号的导数通过使用混叠导数来定期复位正常确定的导数的滤波版本来确定。 使用比正常确定的导数更慢的更新或采样率来计算混叠导数，并且在每个更新别名导数时将正确确定的导数的滤波器版本重置为复位值。 复位值基于混叠导数和滤波器输出的加权和。 周期性复位滤波器输出紧跟输入信号的理想导数，基本上消除了传统滤波引入的相位延迟。

    Method for active engine stop of a hybrid electric vehicle
    5.
    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

    Applicant: Jy-Jen Sah ,  Gregory Hubbard ,  Adam Bennett ,  Todd Steinmetz ,  Michael Foster

    Inventor： Jy-Jen Sah ,  Gregory Hubbard ,  Adam Bennett ,  Todd Steinmetz ,  Michael Foster

    IPC: B60K1/00 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  F02D31/00 ,  F02D41/04

    CPC classification number: F02D41/042 ,  B60K6/445 ,  B60W10/06 ,  B60W10/08 ,  B60W20/11 ,  B60W2710/0616 ,  B60W2710/0661 ,  F02D31/001 ,  F02D2250/24 ,  Y02T10/48 ,  Y02T10/6239 ,  Y02T10/6286 ,  Y10T477/23 ,  Y10T477/24 ,  Y10T477/26 ,  Y10T477/865

    Abstract: 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.

    Abstract translation: 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。

    Method of testing motor torque integrity in a hybrid electric vehicle
    7.
    发明申请
    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：US20050256618A1

    公开(公告)日：2005-11-17

    申请号：US10846000

    申请日：2004-05-14

    Applicant: Tung-Ming Hsieh ,  Gregory Hubbard ,  Jy-Jen Sah

    Inventor： Tung-Ming Hsieh ,  Gregory Hubbard ,  Jy-Jen Sah

    IPC: G01R31/34 ,  G06F17/00

    CPC classification number: G01R31/343

    Abstract: 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.

    Abstract translation: 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。

    Multi-stage compression ignition engine start
    8.
    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

    Applicant: Jy-Jen Sah ,  Gregory Hubbard ,  William Cawthorne ,  Xuefeng Tao ,  Todd Steinmetz

    Inventor： Jy-Jen Sah ,  Gregory Hubbard ,  William Cawthorne ,  Xuefeng Tao ,  Todd Steinmetz

    IPC: F02D41/06 ,  F02N11/00 ,  F02N11/08 ,  F02N15/00 ,  F02N99/00 ,  F02N17/00

    CPC classification number: F02D41/064 ,  F02N11/08 ,  F02N2300/102

    Abstract: 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.

    Abstract translation: 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
    9.
    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

    Applicant: Jy-Jen Sah ,  Todd Steinmetz

    Inventor： Jy-Jen Sah ,  Todd Steinmetz

    IPC: F16D48/02 ,  F16D48/06 ,  G06F17/00

    CPC classification number: F16H61/061 ,  B60W10/02 ,  F16D48/066 ,  F16D2500/1087 ,  F16D2500/3024 ,  F16D2500/30401 ,  F16D2500/30406 ,  F16D2500/3166 ,  F16D2500/70406 ,  F16H2059/6807

    Abstract: 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.

    Abstract translation: 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。

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