Adaptive torque model for internal combustion engine
    5.
    发明授权
    Adaptive torque model for internal combustion engine 有权
    内燃机自适应扭矩模型

    公开(公告)号:US06553958B1

    公开(公告)日:2003-04-29

    申请号:US09833237

    申请日:2001-04-11

    IPC分类号: F02B1700

    摘要: A system and method for controlling a multi-cylinder internal combustion engine include determining a first engine operating variable using a model having at least one adjustable model parameter, measuring a second engine operating variable, and modifying the at least one adjustable model parameter based on a relationship between the first and second engine operating variables. In one embodiment, the first engine operating variable represents engine torque while the second engine operating variable is engine speed. An engine torque model and/or load torque model may be used to determine an estimated engine speed or speed trajectory which is compared to the actual engine speed or trajectory determined using an engine speed sensor. One or more model parameters for the engine torque and/or load torque model are adjusted when appropriate operating conditions are met based on a difference between the predicted or estimated engine speeds and the measured engine speeds.

    摘要翻译: 用于控制多气缸内燃机的系统和方法包括使用具有至少一个可调模型参数的模型来确定第一发动机操作变量,测量第二发动机操作变量,以及基于 第一和第二发动机运行变量之间的关系。 在一个实施例中,第一发动机操作变量表示发动机扭矩,而第二发动机操作变量是发动机转速。 发动机转矩模型和/或负载转矩模型可用于确定与使用发动机转速传感器确定的实际发动机转速或轨迹进行比较的估计的发动机转速或速度轨迹。 基于预测或估计的发动机速度与所测量的发动机速度之间的差异来满足适当的操作条件时,调整发动机转矩和/或负载转矩模型的一个或多个模型参数。

    Method and system for engine air-charge estimation
    6.
    发明授权
    Method and system for engine air-charge estimation 失效
    发动机空气充量估算方法和系统

    公开(公告)号:US06636796B2

    公开(公告)日:2003-10-21

    申请号:US09769800

    申请日:2001-01-25

    IPC分类号: F02D4118

    摘要: The air flow into an engine is estimated via a speed-density calculation wherein the volumetric efficiency is estimated on-line. There are three interconnected observers in the estimation scheme. The first observer estimates the flow through the throttle based on the signal from a mass air flow sensor (MAF). The second observer estimates the intake manifold pressure using the ideal gas law and the signal from a intake manifold absolute pressure sensor (MAP). The third observer estimates the volumetric efficiency and provides an estimate of the air flow into the engine.

    摘要翻译: 通过速度密度计算来估计进入发动机的空气流量,其中容积效率在线估计。 估计方案​​中有三个相互关联的观察员。 第一个观察者基于来自质量空气流量传感器(MAF)的信号来估计通过节气门的流量。 第二个观察者使用理想气体定律和来自进气歧管绝对压力传感器(MAP)的信号来估计进气歧管压力。 第三观察者估计体积效率,并提供进入发动机的气流的估计。

    Method of controlling valve landing in a camless engine
    7.
    发明授权
    Method of controlling valve landing in a camless engine 失效
    在无凸轮发动机中控制阀门着陆的方法

    公开(公告)号:US06397797B1

    公开(公告)日:2002-06-04

    申请号:US09732696

    申请日:2000-12-08

    IPC分类号: F01L904

    CPC分类号: F01L9/04

    摘要: A method of controlling valve landing in a camless engine including a valve movable between fully open and fully closed positions, and an electromagnetic valve actuator for actuating the valve is provided. The method includes providing at least one discrete position measurement sensor to determine when the valve is at a particular position during valve movement. The velocity of the valve is calculated at the particular position based upon current and rate of change of current in the electromagnetic valve actuator when the valve is at the particular position. Valve landing is controlled based upon the calculated velocity.

    摘要翻译: 一种在无凸轮发动机中控制阀门着陆的方法,包括可在完全打开和完全关闭位置之间移动的阀,以及用于致动阀的电磁阀致动器。 该方法包括提供至少一个离散的位置测量传感器,以确定在阀门运动期间阀门何时处于特定位置。 当阀处于特定位置时,基于电磁阀致动器中的电流的变化的电流和速率在特定位置处计算阀的速度。 基于计算的速度控制阀门着陆。