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公开(公告)号：US5758630A
公开(公告)日：1998-06-02
申请号：US580662
申请日：1995-12-29
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。
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公开(公告)号：US5505174A
公开(公告)日：1996-04-09
申请号：US421181
申请日：1995-04-13
申请人： Isao Komoriya , Yusuke Hasegawa , Hidetaka Maki , Shusuke Akazaki , Hiroshi Kitagawa , Toru Kitamura
发明人： Isao Komoriya , Yusuke Hasegawa , Hidetaka Maki , Shusuke Akazaki , Hiroshi Kitagawa , Toru Kitamura
CPC分类号： F02D41/0072 , F02M26/57 , F02D2041/1431 , Y02T10/47
摘要： A system for estimating an exhaust gas recirculation rate for an internal combustion engine. In the system, the EGR rate when its operation is steady is first determined to a desired value with respect to the engine operating conditions at least including the engine speed and the engine load, then the EGR rate is estimated as;EGR rate=(steady-state EGR rate).times.{(gas flow rate QACT determined by the actual valve lifting amount and the ratio between the upstream pressure and the downstream pressure of valve)/(gas flow rate QCMD determined by a command value and the ratio between the upstream pressure and the downstream pressure of valve)} A delay time until the recycled gas enters the combustion chamber is determined and one from among the EGR rates or a fuel injection correction coefficients calculated therefrom consecutively is selected.
摘要翻译： 一种用于估计内燃机的排气再循环速率的系统。 在该系统中，其运转稳定时的EGR率首先被确定为至少包括发动机转速和发动机负荷的发动机运行条件的期望值，则EGR率被估计为： EGR率=（稳态EGR率）x {（由实际阀提升量确定的气体流量QACT和阀的上游压力与下游压力之间的比率）/（由指令值确定的气体流量QCMD和 阀的上游压力和下游压力之间的比率）}确定直到再循环气体进入燃烧室的延迟时间，并且选择EGR率之中的一个或连续计算的燃料喷射校正系数。
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公开(公告)号：US5781875A
公开(公告)日：1998-07-14
申请号：US606384
申请日：1996-02-23
申请人： Hidetaka Maki , Shusuke Akazaki , Yusuke Hasegawa , Isao Komoriya
发明人： Hidetaka Maki , Shusuke Akazaki , Yusuke Hasegawa , Isao Komoriya
CPC分类号： F02D41/008 , F02D41/1402 , F02D41/1473 , F02D41/1477 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/142 , F02D2041/1422 , F02D2041/1426 , F02D2041/1433 , F02D41/1456
摘要： A system for controlling fuel metering for an internal combustion engine provided with a first feedback loop that calculates a first feedback correction coefficient using an adaptive control law to correct a quantity of fuel injection such that a detected air/fuel ratio is brought to a desired air/fuel ratio, a second feedback loop that calculates a second coefficient using a PID control law to similarly correct the quantity of fuel injection, and a third feedback loop that calculates a third coefficient using a PID controller to correct the quantity of fuel injection such that air/fuel ratio variance among the cylinders decreases. Either of the first or second coefficient is selected and based on the selected coefficient, the feedback gains of the third feedback loop are determined.
摘要翻译： 一种用于控制用于内燃机的燃料计量的系统，该内燃机设置有第一反馈回路，该第一反馈回路使用自适应控制定律来计算第一反馈校正系数，以校正燃料喷射量，使得检测到的空气/燃料比达到期望空气 /燃料比，第二反馈回路，其使用PID控制定律来计算第二系数以类似地校正燃料喷射量;以及第三反馈回路，其使用PID控制器计算第三系数，以校正燃料喷射量，使得 气缸之间的空气/燃料比差异减小。 选择第一或第二系数中的任一个，并且基于所选择的系数，确定第三反馈回路的反馈增益。
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公开(公告)号：US5638801A
公开(公告)日：1997-06-17
申请号：US606096
申请日：1996-02-23
申请人： Hidetaka Maki , Shusuke Akazaki , Yusuke Hasegawa
发明人： Hidetaka Maki , Shusuke Akazaki , Yusuke Hasegawa
CPC分类号： F02D41/1402 , F02D41/1473 , F02D2041/1415 , F02D2041/1426 , F02D2041/1433 , F02D41/1456
摘要： A system for controlling fuel metering for a multi-cylinder internal combustion engine. In the system, a feedback loop having an adaptive controller and an adaptation mechanism coupled to the adaptive controller for estimating controller parameters .theta. is provided. The adaptive controller calculates a feedback correction coefficient using internal variables including the controller parameters .theta., to correct a quantity of fuel injection obtained by retrieving mapped data by engine speed and engine load, to bring a detected air/fuel ratio to a desired air/fuel ratio. The internal variables of the adaptive controller are set such that the feedback correction coefficient is 1.0 or thereabout, when the engine operation has shifted from an open-loop control region to the feedback control region.
摘要翻译： 一种用于控制多缸内燃机的燃料计量的系统。 在该系统中，提供了具有耦合到自适应控制器的自适应控制器和适配机构的反馈回路，用于估计控制器参数+ E，cirθ+ EE。 自适应控制器使用包括控制器参数+ E，cirθ+ EE的内部变量来计算反馈校正系数，以校正通过发动机速度和发动机负载检索映射数据而获得的燃料喷射量，以便检测到的空气/燃料比 达到所需的空气/燃料比。 当发动机操作已经从开环控制区域转移到反馈控制区域时，自适应控制器的内部变量被设置为使得反馈校正系数为1.0或其附近。
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公开(公告)号：US5590638A
公开(公告)日：1997-01-07
申请号：US545325
申请日：1995-10-19
CPC分类号： F02D41/008 , F02D41/1402 , F02D41/1473 , F02D41/2454 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/142 , F02D2041/1426 , F02D2041/1433 , F02D2250/12 , F02D41/1456 , F02D41/2477 , F02D41/2483
摘要： A fuel metering control system for an internal combustion engine including 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 at least obtained based on an output of said air/fuel ratio sensor to a desired value. The adaptation mechanism is input with the controlled variable once per prescribed crank angle such as a TDC of a certain cylinder of a four-cylinder engine and estimates the controller parameters (vector) such that the adaptive controller is operated to synchronize with every 4 prescribed crank angle such as every TDC of all cylinders of the internal combustion engine, or with every prescribed crank angle such as every TDC. With the arrangement, the system enables adaptive control of a commercially practical internal combustion engine without degrading control performance.
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和估计控制器参数+ E，cirθ+ EE的自适应机构的反馈回路。 自适应控制器校正燃料喷射量，使得基于所述空气/燃料比传感器的输出至少获得控制变量达到期望值。 适应机构以每个规定的曲柄角一次输入控制变量，例如四缸发动机的某个气缸的TDC，并估计控制器参数（矢量），以使自适应控制器与每4个规定的曲柄同步 内燃机的所有气缸的每个TDC或每个规定的曲柄角度（例如每个TDC）的角度。 通过该装置，该系统能够实现对商业上实用的内燃机的自适应控制，而不降低控制性能。
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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））。
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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
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 。
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公开(公告)号：US5806012A
公开(公告)日：1998-09-08
申请号：US580685
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
CPC分类号： F02D41/1402 , F02D41/1441 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/142 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433 , F02D41/1454 , 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 value, and second feedback loop is provided for calculating feedback correction coefficients to correct the quantity of fuel injection. The desired air/fuel ratio is corrected by a second air/fuel ratio installed downstream of a catalytic converter.
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/燃料比达到期望值，并且提供第二反馈回路用于计算反馈校正系数以校正数量 的燃油喷射。 通过安装在催化转化器下游的第二空气/燃料比来校正所需的空气/燃料比。
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公开(公告)号：US5758490A
公开(公告)日：1998-06-02
申请号：US581406
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
CPC分类号： F02D41/008 , F02D41/1402 , F02D41/1473 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/142 , F02D2041/1426 , F02D2041/1431 , 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 feedback correction coefficient to correct the quantity of basic fuel injection such that the detected air/fuel ratio is brought to a desired value. The desired air/fuel ratio is corrected by a second air/fuel ratio sensor installed downstream of a catalytic converter.
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/燃料比达到期望值。 通过安装在催化转化器下游的第二空气/燃料比传感器来校正所需的空气/燃料比。
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公开(公告)号：US5558076A
公开(公告)日：1996-09-24
申请号：US514857
申请日：1995-08-14
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。
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