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    • 2. 发明授权
    • Adaptive on-coming clutch fill control for an automatic transmission
    • 用于自动变速器的自适应进场离合器填充控制
    • US06292732B1
    • 2001-09-18
    • US09566713
    • 2000-05-09
    • Todd M SteinmetzJeffrey Kurt Runde
    • Todd M SteinmetzJeffrey Kurt Runde
    • G06F1700
    • F16H61/061F16H2061/062Y10T477/69379Y10T477/69387
    • An improved on-coming clutch fill control method in which a model of the transmission hydraulic system is used for control purposes to accurately predict the achievement of on-coming clutch torque capacity based on a comparison of the modeled volume of supplied fluid to a reference volume representing the actual volume of the on-coming clutch, and in which the reference volume for each type of shift is adaptively adjusted based on input speed aberrations observed during shifting. If input speed flaring occurs due to an underestimated reference volume, the reference volume is adaptively increased based on the volume of fluid supplied to the on-coming clutch between the initial detection of flaring and a detection of maximum flaring. If the input speed does not flare, but an early pull-down or overlap is detected, the reference volume is adaptively decreased based on the volume of fluid supplied to the on-coming clutch between the initial detection of pull-down or overlap and the expected achievement of on-coming clutch torque capacity.
    • 一种改进的即将到来的离合器填充控制方法,其中使用传动液压系统的模型用于控制目的,以便基于所提供的流体的模型体积与参考体积的比较来精确地预测即将到来的离合器扭矩能力的实现 代表着陆式离合器的实际体积,并且其中根据换挡期间观察到的输入速度像差自适应地调整每种类型的换档的参考体积。 如果由于低估的参考体积而发生输入速度扩张,则基于在初始检测扩口和检测最大扩口之间提供给即将离合器的流体体积,参考体积自适应地增加。 如果输入速度不闪烁,但是检测到早期的下拉或重叠,则基于在初始检测下拉或重叠之间提供给即将离合器的流体体积自适应地降低参考体积, 预期实现即将来临的离合器扭矩能力。
    • 4. 发明授权
    • Multi-stage compression ignition engine start
    • 多级压缩点火发动机起动
    • US07028657B2
    • 2006-04-18
    • US10846013
    • 2004-05-14
    • Jy-Jen F. SahGregory A. HubbardWilliam R. CawthorneXuefeng T. TaoTodd M. Steinmetz
    • Jy-Jen F. SahGregory A. HubbardWilliam R. CawthorneXuefeng T. TaoTodd M. Steinmetz
    • F02N11/00
    • F02D41/064F02N11/08F02N2300/102
    • 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.
    • 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。
    • 6. 发明授权
    • Model-based transmission upshift control with engine torque management
    • 基于型号的变速箱升档控制与发动机转矩管理
    • US06364811B1
    • 2002-04-02
    • US09598283
    • 2000-06-22
    • Gregory A HubbardJeffrey Kurt RundeLarry Theodore NitzTimothy Alan RobinsonTodd M Steinmetz
    • Gregory A HubbardJeffrey Kurt RundeLarry Theodore NitzTimothy Alan RobinsonTodd M Steinmetz
    • F16H6104
    • F16H61/061B60W10/06B60W10/115B60W2710/1016Y02T10/56Y10T477/675Y10T477/6937Y10T477/6939
    • An improved control for an automatic transmission upshift, wherein the engine output torque and on-coming clutch pressure are coordinated during the shift based on an inverse dynamic model of the transmission to achieve a desired output torque trajectory. The desired output torque trajectory is influenced by operator demand, and an initial value of the desired output torque trajectory is used along with the engine output torque to develop an input acceleration trajectory. The inverse dynamic model of the transmission is used (1) to determine an engine torque command that will achieve both the input acceleration trajectory and the desired output torque trajectory, and (2) to determine a feed-forward pressure command for the on-coming clutch that will produce the input acceleration trajectory, given the engine torque command. The desired output torque trajectory and the engine output torque are used to determine the expected input speed, and a feed-back control term based on the deviation of the measured input speed from the expected input speed is used to adjust the on-coming clutch pressure command to account for model errors. Finally, the closed-loop feedback error is used to enable adaptive correction of the feed-forward control so that the feed-forward clutch pressure more nearly produces the commanded input shaft acceleration.
    • 用于自动变速器升档的改进的控制,其中基于变速器的逆动力学模型,在换档期间协调发动机输出扭矩和接通离合器压力,以实现期望的输出转矩轨迹。 期望的输出转矩轨迹受操作者需求的影响,并且使用期望的输出转矩轨迹的初始值以及发动机输出转矩来产生输入加速轨迹。 使用变速器的逆动力学模型(1)来确定将实现输入加速度轨迹和期望输出转矩轨迹的发动机扭矩指令,以及(2)确定用于接下来的前馈压力指令 给定发动机扭矩指令的离合器将产生输入加速度轨迹。 使用期望的输出转矩轨迹和发动机输出转矩来确定预期的输入速度,并且使用基于测量的输入速度与预期输入速度的偏差的反馈控制项来调整接通离合器压力 命令来解释模型错误。 最后,使用闭环反馈误差来实现前馈控制的自适应校正,使得前馈离合器压力更接近地产生指令的输入轴加速度。