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    Fuel metering control system for internal combustion engine
    1.
    发明授权
    Fuel metering control system for internal combustion engine 失效
    内燃机燃油计量控制系统

    公开(公告)号：US5758630A

    公开(公告)日：1998-06-02

    申请号：US580662

    申请日：1995-12-29

    申请人： Hidetaka Maki ,  Shusuke Akazaki ,  Yusuke Hasegawa ,  Yoichi Nishimura ,  Isao Komoriya

    发明人： Hidetaka Maki ,  Shusuke Akazaki ,  Yusuke Hasegawa ,  Yoichi Nishimura ,  Isao Komoriya

    IPC分类号： F02D41/00 ,  F02D41/14 ,  F02D41/34

    CPC分类号： F02D41/008 ,  F02D41/1402 ,  F02D41/1473 ,  F02D41/2454 ,  F02D41/2477 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1417 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1426 ,  F02D2041/1433 ,  F02D41/1456

    摘要： A fuel metering control system for an internal combustion engine including a feedback loop having an adaptive controller and an adaptation mechanism that estimates a controller parameters .theta.. The adaptive controller corrects the quantity of fuel injection to bring a controlled variable obtained at least based on an output of said air/fuel ratio sensor, to a desired value. The air/fuel ratio sensor outputs are sampled and one of the sampled data is selected as the air/fuel ratio to be input to the adaptation mechanism. Similarly, the senor outputs are sampled and one of the sampled is selected in accordance with another characteristic to be used in the estimation of the air/fuel ratios of the individual cylinder. The air/fuel ratio is discriminated to be within a prescribed range, and set to a predetermined value when it is determined to be within the prescribed range.

    摘要翻译： 一种用于内燃机的燃料计量控制系统，包括具有自适应控制器的反馈回路和估计控制器参数+ E，cirθ+ EE的自适应机构。 自适应控制器校正燃料喷射量，使至少基于所述空气/燃料比传感器的输出获得的受控变量达到期望值。 空气/燃料比传感器输出被采样，并且其中一个采样数据被选择为要输入到适应机构的空燃比。 类似地，传感器输出被采样，并且根据用于估计单个气缸的空气/燃料比的另一特性来选择采样中的一个。 空气/燃料比被判断为在规定范围内，并且当确定在规定范围内时将其设定为预定值。

    Air-fuel ratio estimator for internal combustion engine
    4.
    发明授权
    Air-fuel ratio estimator for internal combustion engine 失效
    内燃机空燃比估计

    公开(公告)号：US5569847A

    公开(公告)日：1996-10-29

    申请号：US517855

    申请日：1995-08-22

    申请人： Yusuke Hasegawa ,  Yoichi Nishimura ,  Isao Komoriya ,  Shusuke Akazaki ,  Eisuke Kimura

    发明人： Yusuke Hasegawa ,  Yoichi Nishimura ,  Isao Komoriya ,  Shusuke Akazaki ,  Eisuke Kimura

    IPC分类号： F02D41/14 ,  F02D45/00 ,  G01M15/04 ,  G01L3/26 ,  G01L5/13

    CPC分类号： F02D41/1473 ,  F02D41/1401 ,  F02D41/1481 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1417 ,  F02D2041/1431 ,  F02D2041/1433 ,  F02D2041/1434 ,  F02D41/1456

    摘要： An air-fuel ratio estimator for estimating air-fuel ratio of an air and fuel mixture supplied to an internal combustion engine from an output of an air-fuel ratio sensor. In the estimator, detection response lag time of said air-fuel ratio sensor is approximated as a first-order lag time system to produce state equation from said first-order lag time system. The state equation is discretized for a period delta T to obtain a discretized state equation. A transfer function is calculated from the discretized state equation and is then an inverse transfer function is calculated from said transfer function. And correction coefficient of said inverse transfer function is determined and multiplying with inverse transfer function to the sensor output estimate an air-fuel ratio of an air and fuel mixture supplied to the engine. The correction coefficient is predetermined with respect to engine speed and is made zero at or below a predetermined engine speed.

    摘要翻译： 一种用于从空燃比传感器的输出估计供给到内燃机的空气和燃料混合物的空燃比的空燃比估计器。 在估计器中，所述空燃比传感器的检测响应延迟时间近似为一阶滞后时间系统，以从所述一阶滞后时间系统产生状态方程。 将状态方程离散化为周期ΔT以获得离散状态方程。 从离散状态方程式计算传递函数，然后根据所述传递函数计算逆传递函数。 并且确定所述反向传递函数的校正系数，并且与传递函数的反向传递函数相乘估计提供给发动机的空气和燃料混合物的空燃比。 校正系数相对于发动机转速是预先确定的，并且在预定的发动机转速下为零。

    A/F ratio control system for internal combustion engine
    7.
    发明授权
    A/F ratio control system for internal combustion engine 失效
    内燃机A / F比控制系统

    公开(公告)号：US5363648A

    公开(公告)日：1994-11-15

    申请号：US172896

    申请日：1993-12-27

    申请人： Shusuke Akazaki ,  Yusuke Hasegawa ,  Yoichi Nishimura ,  Isao Komoriya

    发明人： Shusuke Akazaki ,  Yusuke Hasegawa ,  Yoichi Nishimura ,  Isao Komoriya

    IPC分类号： F02D41/04 ,  F02D41/00 ,  F02D41/14 ,  F02D41/34 ,  F01N3/22

    CPC分类号： F02D41/008 ,  F02D41/1401 ,  F02D41/1408 ,  F02D41/1443 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1433 ,  F02D41/1456

    摘要： A system for controlling an air/fuel ratio of a four-cylinder internal combustion engine. In the system, an actual air/fuel ratio, at least at upstream or downstream of a catalytic converter installed at an exhaust system of the engine, is intentionally oscillated at least either in its amplitude or cycle. A characteristic of a desired air/fuel ratio as a periodic function is established with respect to time such that the desired air/fuel ratio varies at least either at a predetermined amplitude or cycle within a predetermined period. The characteristic is sampled by a time interval determined on the basis of a time interval between TDC crank angle positions of the engine. Each cylinder's desired air/fuel ratio is then determined from the sampled data, and a fuel injection amount for each cylinder is determined from the respective cylinder's desired air/fuel ratios. Fuel is then supplied to each cylinder in response to the determined fuel injection amount. The actual air/fuel ratio at each cylinder is detected or estimated and feedback controlled to the desired air/fuel ratio.

    摘要翻译： 一种用于控制四缸内燃机的空燃比的系统。 在该系统中，至少在安装在发动机的排气系统处的催化转化器的上游或下游的实际空气/燃料比有意地以其振幅或循环中的至少一个振荡。 相对于时间建立期望的空气/燃料比作为周期性函数的特性，使得期望的空气/燃料比在预定时间段内至少以预定的幅度或周期变化。 基于发动机的TDC曲柄角位置之间的时间间隔确定的时间间隔对特性进行采样。 然后根据采样数据确定每个气缸所需的空气/燃料比，并且根据相应气缸的期望的空气/燃料比确定每个气缸的燃料喷射量。 响应于所确定的燃料喷射量，燃料被提供给每个气缸。 检测或估计每个气缸处的实际空气/燃料比，并将其反馈控制到所需的空气/燃料比。

    Fuel metering control system for internal combustion engine
    9.
    发明授权
    Fuel metering control system for internal combustion engine 失效
    内燃机燃油计量控制系统

    公开(公告)号：US5755094A

    公开(公告)日：1998-05-26

    申请号：US580931

    申请日：1995-12-29

    申请人： Hidetaka Maki ,  Shusuke Akazaki ,  Yusuke Hasegawa ,  Isao Komoriya ,  Yoichi Nishimura ,  Toshiaki Hirota

    发明人： Hidetaka Maki ,  Shusuke Akazaki ,  Yusuke Hasegawa ,  Isao Komoriya ,  Yoichi Nishimura ,  Toshiaki Hirota

    IPC分类号： F02D41/00 ,  F02D41/14 ,  F02D41/34 ,  F01N3/28

    CPC分类号： F02D41/008 ,  F02D41/1402 ,  F02D41/1441 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1417 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1433 ,  F02D41/1456

    摘要： A fuel metering control system for an internal combustion engine having a plurality of cylinders. The system includes an air/fuel ratio sensor and engine operating condition detecting means for detecting engine operating conditions at least including engine speed and engine load. The basic quantity of fuel injection is determined by retrieving mapped data according to the engine speed and engine load. An adaptive controller is provided to calculate a first feedback correction coefficient to correct the quantity of basic fuel injection such that the detected air/fuel ratio is brought to a desired air/fuel ratio, and second and third feedback loops are provided for calculating feedback correction coefficients to correct the quantity of fuel injection. The output quantity of fuel injection is determined on the basis of the basic quantity of fuel injection and the feedback correction coefficients.

    摘要翻译： 一种用于具有多个气缸的内燃机的燃料计量控制系统。 该系统包括空燃比传感器和用于检测至少包括发动机转速和发动机负荷的发动机运行状况的发动机运转状态检测装置。 通过根据发动机转速和发动机负荷检索映射数据来确定燃油喷射的基本数量。 提供自适应控制器来计算第一反馈校正系数以校正基本燃料喷射量，使得检测到的空气/燃料比达到期望的空气/燃料比，并且提供第二和第三反馈回路以计算反馈校正 系数来校正燃油喷射量。 基于燃料喷射的基本量和反馈校正系数来确定燃料喷射的输出量。