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    Fuel metering control system for internal combustion engine
    11.
    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：US5558075A

    公开(公告)日：1996-09-24

    申请号：US514785

    申请日：1995-08-14

    申请人： Hidetaka Maki ,  Yusuke Hasegawa ,  Shusuke Akazaki

    发明人： Hidetaka Maki ,  Yusuke Hasegawa ,  Shusuke Akazaki

    IPC分类号： F02D41/14

    CPC分类号： F02D41/1473 ,  F02D41/1402 ,  F02D41/1477 ,  F02D41/1488 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/142 ,  F02D2041/1426 ,  F02D2041/1433 ,  F02D41/1456

    摘要： A fuel metering control system for an internal combustion engine, having a feedback loop. In the system, the quantity of fuel injection (Tim) to be supplied to the engine (plant) is determined outside of the feedback loop. A first feedback correction coefficient (KSTR) is calculated using an adaptive law, while a second feedback correction coefficient (KLAF(KSTRL)), whose control response is inferior to the first feedback correction coefficient is calculated, using a PID control law. The feedback correction coefficients are calculated such that the plant output (air/fuel ratio) is brought to a desired (desired air/fuel ratio). A Variable(s) of one coefficients is replaced with a value of the other coefficient such that the one coefficient becomes close to the other. Moreover, the second coefficient (KLAF(KSTRL) is used at a time of returning from open-loop to the feedback control.

    摘要翻译： 一种用于内燃机的燃料计量控制系统，具有反馈回路。 在该系统中，在反馈回路之外确定要供应给发动机（工厂）的燃料喷射量（Tim）。 使用自适应定律来计算第一反馈校正系数（KSTR），而使用PID控制定律来计算其控制响应劣于第一反馈校正系数的第二反馈校正系数（KLAF（KSTRL））。 计算反馈校正系数使得工厂输出（空气/燃料比）达到期望的（期望的空气/燃料比）。 一个系数的变量被替换为其他系数的值，使得一个系数变得接近另一个系数。 此外，在从开环返回到反馈控制时使用第二系数（KLAF（KSTRL））。

    Fuel metering control system in internal combustion engine
    12.
    发明授权
    Fuel metering control system in internal combustion engine 失效
    内燃机燃油计量控制系统

    公开(公告)号：US5549092A

    公开(公告)日：1996-08-27

    申请号：US507974

    申请日：1995-07-27

    申请人： Yusuke Hasegawa ,  Isao Komoriya ,  Shusuke Akazaki ,  Hidetaka Maki ,  Satoru Abe

    发明人： Yusuke Hasegawa ,  Isao Komoriya ,  Shusuke Akazaki ,  Hidetaka Maki ,  Satoru Abe

    IPC分类号： F02D45/00 ,  F02D41/04 ,  F02D41/18 ,  F02D41/32 ,  F02D41/34 ,  F02D41/10

    CPC分类号： F02D41/182 ,  F02D41/045 ,  F02D41/32 ,  F02D2200/0402

    摘要： A system for controlling fuel metering in an internal combustion engine using a fluid dynamic model and the quantity of throttle-past air is determined therefrom. Based on the observation that the difference between the steady-state engine operating condition and the transient engine operating condition can be described as the difference in the effective throttle opening areas, the quantity of fuel injection is determined from the product of the ratio between the area and its first-order lag value and the quantity of fuel injection under the steady-state engine operating condition obtained by mapped data retrieval, and by subtracting the quantity of correction corresponding to the quantity of chamber-filling air. The effective throttle opening area's first order lag is calculated using a weight that varies with the engine speed, so that elongation or shortening of the TDC interval due to the decrease/increase of the engine speed will not affect the determination of the quantity of fuel injection.

    摘要翻译： 使用流体动力学模型来控制内燃机中的燃料计量的系统以及节流过去空气的量来确定。 基于将稳态发动机运转状态与暂态发动机运转状态之间的差可以描述为有效节气门开度面积的差异的观察结果，燃料喷射量根据区域之间的比率 以及其一阶滞后值和通过映射数据检索获得的稳态发动机运转状态下的燃料喷射量，并且减去与填充空气量相对应的校正量。 使用随发动机转速变化的重量来计算有效节气门开度面积的一阶滞后，使得由于发动机转速的降低/增加引起的TDC间隔的伸长或缩短不会影响燃料喷射量的确定 。

    Air-fuel ratio estimator for internal combustion engine
    17.
    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。

    Fuel metering control system for internal combustion engine
    18.
    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：US5558076A

    公开(公告)日：1996-09-24

    申请号：US514857

    申请日：1995-08-14

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

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

    IPC分类号： F01L1/26 ,  F02D13/02 ,  F02D41/00 ,  F02D41/14 ,  F02D43/00

    CPC分类号： F02D41/1402 ,  F01L1/267 ,  F02D13/0215 ,  F02D13/0261 ,  F02D41/0002 ,  F02D2041/001 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/142 ,  F02D2041/1426 ,  F02D2041/1433 ,  Y02T10/18 ,  Y02T10/42

    摘要： A fuel metering control system for an internal combustion engine, having a feedback loop. In the system, the quantity of fuel injection (Tim) to be supplied to the engine (plant) is determined outside of the feedback loop. A first feedback correction coefficient (KSTR) is calculated using an adaptive law, while a second feedback correction coefficient (KLAF(KSTRL)), whose control response is inferior to the first feedback correction coefficient is calculated using a PID control law. The feedback correction coefficients are calculated such that the plant output (air/fuel ratio) is brought to a desired value (desired air/fuel ratio). The engine is equipped with a variable valve timing mechanism which switches the valve timing between characteristics for low engine speed and those for high engine speed. If the characteristic for high engine speed is selected, the second feedback correction coefficient is used for fuel injection quantity correction.

    摘要翻译： 一种用于内燃机的燃料计量控制系统，具有反馈回路。 在该系统中，在反馈回路之外确定要供应给发动机（工厂）的燃料喷射量（Tim）。 使用自适应规律计算第一反馈校正系数（KSTR），而使用PID控制定律计算其控制响应低于第一反馈校正系数的第二反馈校正系数（KLAF（KSTRL））。 计算反馈校正系数，使得工厂输出（空气/燃料比）达到期望值（期望的空气/燃料比）。 该发动机配备有可变气门正时机构，可在低发动机转速的特性与高发动机转速的特性之间切换气门正时。 如果选择高发动机转速的特性，则将第二反馈校正系数用于燃料喷射量校正。

    Fuel metering control system in internal combustion engine
    19.
    发明授权
    Fuel metering control system in internal combustion engine 失效
    内燃机燃油计量控制系统

    公开(公告)号：US5349933A

    公开(公告)日：1994-09-27

    申请号：US137344

    申请日：1993-10-18

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

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

    IPC分类号： F02D41/04 ,  F02D41/14 ,  F02D41/18 ,  F02D41/10

    CPC分类号： F02D41/182 ,  F02D41/045 ,  F02D41/1401 ,  F02D2041/1431 ,  F02D2041/1433 ,  F02D2200/0402

    摘要： A system for controlling fuel metering in an internal combustion engine using a fluid dynamic model and the cylinder air flow past the throttle is determined therefrom. Based on the observation that the difference between a steady-state engine operating condition and a transient engine operating condition can be described as the difference in the effective throttle opening areas, the amount of fuel injection is determined from the product of the ratio between the areas and a basic fuel injection amount under the steady-state engine operating condition obtained by mapped data retrieval and by subtracting a correction amount corresponding to an air flow filling a chamber between the throttle and the cylinder from the product. Under steady-state engine operation, the correction amount becomes zero. In an embodiment, the first-order lag of a detected throttle opening is calculated and based on the value, various parameters including a pseudo manifold pressure are obtained so as to solve sensors' detection timing lag or a pressure sensor's detection lag.

    摘要翻译： 使用流体动力学模型来控制内燃机中的燃料计量的系统和通过油门的气缸气流被确定。 基于将稳态发动机运转状态与瞬时发动机运转状态之间的差可以描述为有效节气门开度面积的差异的观察结果，燃料喷射量根据区域之间的比率 以及在通过映射数据检索获得的稳态发动机运行状态下的基本燃料喷射量，并且从产品中减去与填充节气门和气缸之间的室的空气流相对应的校正量。 在稳态发动机运行下，校正量变为零。 在一个实施例中，计算检测到的节气门开度的一阶滞后，并且基于该值，获得包括伪歧管压力的各种参数，以便解决传感器的检测定时滞后或压力传感器的检测滞后。