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    Method of controlling engine torque during launch from neutral idle operation
    1.
    发明授权
    Method of controlling engine torque during launch from neutral idle operation 有权
    从空载怠速运转中控制发动机扭矩的方法

    公开(公告)号：US06440041B1

    公开(公告)日：2002-08-27

    申请号：US09779816

    申请日：2001-02-08

    申请人： Bradley Dean Riedle ,  Jeffrey Allen Doering ,  Ronald Thomas Cowan

    发明人： Bradley Dean Riedle ,  Jeffrey Allen Doering ,  Ronald Thomas Cowan

    IPC分类号： B60K4104

    CPC分类号： F02D41/10 ,  B60W10/04 ,  B60W10/06 ,  B60W10/11 ,  B60W10/115 ,  B60W30/1819 ,  B60W30/186 ,  B60W2710/0666 ,  F02D2200/1012 ,  F02D2250/18 ,  F02D2250/21 ,  F02D2250/26 ,  F16H61/686 ,  F16H63/50 ,  F16H2200/0047 ,  Y10T477/675

    摘要： A method of controlling engine torque in a motor vehicle having an internal combustion engine and multi-ratio transmission when launched from a neutral idle rest condition. At neutral idle, the transmission is controlled such that the input and output members are decoupled. During vehicle launch, two different strategies may be employed to control engine torque. One preferred method is to determine an engine brake torque limit as a function of time. Another preferred method to determine the engine brake torque limit is to estimate the torque capacity of the forward clutch at any given time using a mathematical model and a calibrated offset of turbine torque. Irrespective of the particular method used, the determined engine brake torque limit is compared to the corresponding engine torque amount that is requested by the vehicle operator. As a result, the actual engine torque output is optimized at all times to provide approximately the maximum amount of requested torque without exceeding the capacity of the transmission's forward clutch.

    摘要翻译： 一种当从中立空转静止状态发射时，具有内燃机和多比率变速器的机动车辆中的发动机转矩的控制方法。 在中性空闲时，传输被控制使得输入和输出构件被解耦。 在车辆发射期间，可以采用两种不同的策略来控制发动机转矩。 一种优选的方法是确定作为时间的函数的发动机制动转矩极限。 确定发动机制动转矩极限的另一个优选方法是使用数学模型和涡轮扭矩的校准偏移来估计在任何给定时间的前进离合器的扭矩容量。 不考虑使用的特定方法，将确定的发动机制动转矩极限与车辆操作者要求的对应的发动机转矩量进行比较。 因此，实际的发动机扭矩输出始终被优化，以提供大约最大量的要求扭矩，而不超过变速器前进离合器的容量。

    Method of controlling engine idle speed during launch from neutral idle operation
    2.
    发明授权
    Method of controlling engine idle speed during launch from neutral idle operation 有权
    在空载怠速运行期间控制发动机怠速的方法

    公开(公告)号：US06634984B1

    公开(公告)日：2003-10-21

    申请号：US09779815

    申请日：2001-02-08

    申请人： Jeffrey Allen Doering ,  Bradley Dean Riedle ,  Ronald Thomas Cowan

    发明人： Jeffrey Allen Doering ,  Bradley Dean Riedle ,  Ronald Thomas Cowan

    IPC分类号： B60K4104

    CPC分类号： F02D41/083 ,  Y10T477/675 ,  Y10T477/79

    摘要： A method of controlling engine idle speed in a motor vehicle having an internal combustion engine and multi-ratio transmission when launched from a neutral idle rest condition. At neutral idle, the transmission is controlled such that the input and output members are decoupled. During vehicle launch from neutral idle operation, two different strategies may be employed to control engine idle speed. One preferred method is to determine a feedforward or predicted torque converter load as a function of time. Another preferred method is to determine the feedforward or predicted torque converter load by comparing a maximum engine brake torque and the torque capacity of the forward clutch at any given time. Irrespective of the particular method used, other engine torque loads are added to the feedforward or predicted torque converter load to determine the engine output torque required to control engine idle speed and provide a smooth between transmission operating modes throughout the launch period.

    摘要翻译： 一种在从中立空转静止状态发射时具有内燃机和多比率变速器的机动车辆中的发动机怠速控制的方法。 在中性空闲时，传输被控制使得输入和输出构件被解耦。 在从空载怠速运行的车辆发射期间，可以采用两种不同的策略来控制发动机怠速。 一种优选的方法是确定作为时间的函数的前馈或预测的变矩器负载。 另一个优选的方法是通过在任何给定时间比较最大发动机制动转矩和前进离合器的扭矩容量来确定前馈或预测的变矩器负载。 不管使用的具体方法如何，其他发动机转矩负载都被添加到前馈或预测变矩器负载中，以确定控制发动机空转速度所需的发动机输出转矩，并在整个启动期间提供传动操作模式之间的平滑。

    Control strategy and method for independently controlling friction element actuators for an automatic transmission
    7.
    发明授权
    Control strategy and method for independently controlling friction element actuators for an automatic transmission 有权
    用于独立控制自动变速器摩擦元件执行器的控制策略和方法

    公开(公告)号：US06385520B1

    公开(公告)日：2002-05-07

    申请号：US09636729

    申请日：2000-08-10

    申请人： Pramod K. Jain ,  Howard Cecil Kuhn ,  Ronald Thomas Cowan ,  Bradley Dean Riedle ,  Chuanchi Steve Tang ,  James M. Merner

    发明人： Pramod K. Jain ,  Howard Cecil Kuhn ,  Ronald Thomas Cowan ,  Bradley Dean Riedle ,  Chuanchi Steve Tang ,  James M. Merner

    IPC分类号： G06F1700

    CPC分类号： F16H61/061 ,  F16H2059/147 ,  F16H2059/702 ,  F16H2061/0078 ,  F16H2306/24

    摘要： A control strategy and method for controlling application and release of friction elements in an automatic transmission to effect gear ratio changes as one friction element is release and another friction element is applied during ratio changes. The transmission has an electronic controller and multiple solenoid regulator valves hydraulically coupled directly to pressure-operated friction elements. Powertrain variables are obtained and processed to calculate gear ratio control parameters derived from desired line pressure for a pressure control valve circuit that communicates with the friction elements. The desired gear ratio is determined for each given set of powertrain variables. Upshifts and downshifts are obtained by releasing one friction element in synchronism with an application of the other friction element, whereby a direct friction element to friction element torque transition is achieved with minimal inertia torque disturbances.

    摘要翻译： 一种用于控制自动变速器中的摩擦元件的应用和释放的控制策略和方法，以在一个摩擦元件释放时施加齿轮比变化，并且在比率变化期间施加另一摩擦元件。 变速器具有电子控制器和多个电磁调节阀，其液压耦合到压力操作的摩擦元件。 获得并处理动力系变量，以计算从与摩擦元件连通的压力控制阀回路的期望管路压力导出的传动比控制参数。 为每组给定的动力系变量确定所需的传动比。 通过与施加另一个摩擦元件同步地释放一个摩擦元件来获得升档和降档，由此以最小的惯性转矩扰动实现摩擦元件扭矩转换的直接摩擦元件。