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21.发明授权
公开(公告)号：US5448978A
公开(公告)日：1995-09-12
申请号：US85157
申请日：1993-07-02
CPC分类号： F02D41/008 , F02D41/047 , F02D41/1402 , F02D41/1458 , F02D41/182 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/1431 , F02D2041/1433 , F02D2041/1434 , F02D2200/0402
摘要： Fuel metering control system in an internal combustion engine utilizing adaptive control having an intake manifold wall's fuel adherence plant. In the system, an actual air/fuel ratio in the individual cylinders is accurately estimated using an exhaust manifold model with an observer. Also, an actual cylinder air flow is estimated using a fluid model. Based on them, a desired cylinder fuel flow is determined by dividing the actual cylinder air flow by a desired air/fuel ratio and an actual cylinder fuel flow is determined by dividing the actual cylinder air flow by the estimated actual air/fuel ratio. The adaptive controller operates such that the actual cylinder fuel flow constantly coincides with the desired cylinder fuel flow. In an embodiment, in order to respond the change in wall adherence parameters, a compensator is connected in series with the wall adherence plant, a virtual plant incorporating the compensator is postulated and when the transfer characteristics of the virtual plant is other than 1 or thereabout, the adaptive controller is operated to have a transfer characteristics inverse thereto. At the same time, a method for estimating cylinder air flow inducted in the engine using the aforesaid fluid model is explained.
摘要翻译： 利用具有进气歧管壁的燃料附着装置的自适应控制的内燃机中的燃料计量控制系统。 在该系统中，使用具有观察者的排气歧管模型来精确地估计各个气缸中的实际空气/燃料比。 此外，使用流体模型估计实际的气缸气流。 基于它们，通过将实际气缸气流除以期望的空气/燃料比来确定期望的气缸燃料流量，并且通过将实际气缸气流除以估计的实际空气/燃料比来确定实际气缸燃料流量。 自适应控制器操作使得实际气缸燃料流量恒定地与期望的气缸燃料流量重合。 在一个实施例中，为了响应壁粘附参数的变化，补偿器与壁粘附装置串联连接，假设包含补偿器的虚拟设备，并且当虚拟设备的传送特性不是1或其附近 操作自适应控制器以具有与其相反的传送特性。 同时，说明了使用上述流体模型估计在发动机中引入的气缸气流的方法。
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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：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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公开(公告)号：US5720265A
公开(公告)日：1998-02-24
申请号：US514632
申请日：1995-08-14
CPC分类号： F02D41/1402 , F02D13/0215 , F02D41/1477 , F02D2041/001 , F02D2041/1409 , F02D2041/1415 , F02D2041/1418 , F02D2041/142 , F02D2041/1426 , F02D2041/1433 , F02D41/1456 , Y02T10/18
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), whose control response is inferior to that of 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 coefficients are calculated at least in parallel and either of them is selected to be multiplied by the quantity of fuel injection (Ti).
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）。 使用自适应法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）。 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）。 至少并行计算系数，并选择其中的任一个乘以燃料喷射量（Ti）。
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公开(公告)号：US5606959A
公开(公告)日：1997-03-04
申请号：US580480
申请日：1995-12-29
CPC分类号： F02D41/008 , F02D41/1402 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/142 , F02D2041/1422 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433 , F02D2041/1434 , F02D2200/703
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 controller parameters .theta.. The adaptive controller calculates a feedback correction coefficient that corrects the quantity of fuel injection to bring a controlled variable obtained at least based on an output of an air/fuel ratio sensor, to a desired air/fuel ratio. The convergence speed of the controller parameters are determined by a gain matrix. The gain matrix is determined in response to at least one of the detected engine operating conditions.
摘要翻译： 一种用于内燃机的燃料计量控制系统，其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。 自适应控制器计算校正燃料喷射量的反馈校正系数，以将至少基于空气/燃料比传感器的输出获得的受控变量转换为期望的空气/燃料比。 控制器参数的收敛速度由增益矩阵决定。 响应于检测到的发动机操作条件中的至少一个来确定增益矩阵。
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公开(公告)号：US5787868A
公开(公告)日：1998-08-04
申请号：US587804
申请日：1995-12-29
CPC分类号： F02D41/008 , F02D41/1402 , F02D41/1473 , F02D41/1488 , F02D41/2454 , F02D41/2477 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/142 , F02D2041/1422 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433 , F02D41/1454 , 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 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 adaptation mechanism is input with the controlled variable once per prescribed crank angle such as a TDC of a certain cylinder and estimates the controller parameters. Since, however, the input is limited to a specific cylinder's air/fuel ratio, the air/fuel ratio is averaged for all cylinders and used in the calculation. Similar averaging is made for the other parameters input to the mechanism or output from the controller.
摘要翻译： 一种用于内燃机的燃料计量控制系统，其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。 适应机制是通过控制变量输入一个规定的曲柄角，例如某个气缸的TDC，并估计控制器参数。 然而，由于输入被限制在特定的气缸的空气/燃料比，因此所有气缸的空气/燃料比被平均化并用于计算。 对输入机构的其他参数或从控制器的输出进行类似的平均。
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公开(公告)号：US5666934A
公开(公告)日：1997-09-16
申请号：US581501
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 , F02D2250/12 , 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 adaptation mechanism is input with the controlled variable once per prescribed crank angle such as TDC of a certain cylinder and estimates the controller parameters (vector). The adaptive controller is therefore operated to synchronize with every prescribed crank angle, e.g., every TDC of all cylinders of the internal combustion engine. 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。 适应机制是按照规定的曲柄角（如某个气缸的TDC）一次输入受控变量，并估计控制器参数（矢量）。 因此，自适应控制器被操作以与每个规定的曲柄角（例如内燃机的所有气缸的每个TDC）同步。 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：US5542404A
公开(公告)日：1996-08-06
申请号：US383373
申请日：1995-02-03
CPC分类号： F02D41/008 , F02D41/1495 , F02D41/22 , F02D41/1456
摘要： A malfunction detecting system for an internal combustion engine utilizes an air/fuel ratio feedback control loop. Namely, feedback factors #nKLAF operate to absorb the air/fuel ratio variance between cylinders and to converge the individual cylinders' air/fuel ratios to the confluence point air/fuel ratio, while another feedback factor KLAF operates to converge the confluence point air/fuel ratio to a desired air/fuel ratio, converging all cylinders' air/fuel ratios to the desired air/fuel ratio. With this arrangement, any of the feedback factors #nKLAF for a certain cylinder becomes a prescribed value, it can therefore be assumed that any abnormality would occur in a part such as the fuel injector which would affect the air/fuel ratio in the cylinder concerned. Similarly, if the confluence point air/fuel ratio feedback factor KLAF becomes another prescribed value, it can be assumed that any abnormality would occur in a part such as the fuel pressure system which would affect the air/fuel ratios of all the cylinders. By discriminating these factors, malfunctions can be detected immediately and accurately.
摘要翻译： 用于内燃机的故障检测系统利用空燃比反馈控制回路。 也就是说，反馈因子#nKLAF用于吸收气缸之间的空气/燃料比变化，并且将各个气缸的空气/燃料比收敛到汇流点空气/燃料比，而另一反馈系数KLAF用于使汇合点空气/ 燃料比达到期望的空气/燃料比，将所有气缸的空气/燃料比收敛到期望的空气/燃料比。 通过这种布置，对于某个气缸的任何反馈因子＃nKLAF变为规定值，因此可以假设在诸如燃料喷射器的部件中将发生任何异常，这将影响相关气缸中的空气/燃料比 。 类似地，如果汇流点空燃比反馈因数KLAF成为另一规定值，则可以假设在诸如将影响所有气缸的空气/燃料比的燃料压力系统的部分中将发生任何异常。 通过区分这些因素，可以立即且准确地检测故障。
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公开(公告)号：US5692485A
公开(公告)日：1997-12-02
申请号：US401430
申请日：1995-03-09
CPC分类号： F02D41/1473 , F02D41/047 , F02D41/1402 , G05B13/024 , F02D2041/1415 , F02D2041/1433
摘要： An air/fuel ratio feedback control system with the adaptive controller. The adaptive controller has a system parameter estimator which identifies system parameters such that the error between the desired value and the controlled variable outputted from the plant decreases to zero. In the system, a basic fuel injection amount is determined at a feedforward system. The adaptive controller is placed outside of the basic fuel injection amount determining system and receives the desired value (air/fuel ratio) and the controlled value (detected air/fuel ratio) using the system parameters etc. The calculated feedback coefficient is multiplied to the basic fuel injection amount to determine a final injection amount to be supplied to the plant (engine). Variables necessary for the system parameter calculation are limited their change of range so as to make the controller to be realized on a low performance computer with a small word length.
摘要翻译： 具有自适应控制器的空燃比反馈控制系统。 自适应控制器具有系统参数估计器，其识别系统参数，使得期望值与从工厂输出的受控变量之间的误差降至零。 在该系统中，在前馈系统中确定基本的燃料喷射量。 自适应控制器设置在基本燃料喷射量确定系统的外部，并使用系统参数等接收期望值（空燃比）和受控值（检测到的空气/燃料比）。将计算出的反馈系数乘以 基本燃料喷射量以确定要供应给设备（发动机）的最终喷射量。 系统参数计算所需的变量限制了其范围的变化，以使控制器在具有较小字长的低性能计算机上实现。
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30.发明授权
公开(公告)号：US5600056A
公开(公告)日：1997-02-04
申请号：US463639
申请日：1995-06-06
申请人： Yusuke Hasegawa , Isao Komoriya , Yoichi Nishimura
发明人： Yusuke Hasegawa , Isao Komoriya , Yoichi Nishimura
CPC分类号： F02D41/008 , F02D41/1401 , F02D41/1443 , F02D41/2422 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/1433 , F02D41/0082 , F02D41/1456
摘要： An air/fuel ratio detection system for a multicylinder internal combustion engine having an air/fuel ratio sensor installed at the exhaust system confluence point of the engine. The sensor outputs are successively stored in buffers. In the engine, the distances of the individual cylinder exhaust ports to the sensor are different for all cylinders, which affects the air/fuel ratio detection. Moreover, the engine operating conditions also affect the detection. For that reason, mapped data called timing maps are prepared for the individual cylinders to be retrieved according to the engine speed and manifold absolute pressure for sampled data selection. The timing maps enable the system to select one from among sampled data which approximates the actual behavior of the air/fuel ratio at the confluence point in response to the distances from the cylinder exhaust port to the sensor and the operating conditions of the engine.
摘要翻译： 一种用于多缸内燃机的空气/燃料比检测系统，其具有安装在发动机的排气系统汇合点处的空气/燃料比传感器。 传感器输出依次存储在缓冲器中。 在发动机中，单个气缸排气口与传感器的距离对于所有气缸都是不同的，这影响空/燃比的检测。 而且，发动机的运行条件也会影响检测。 为此，根据用于采样数据选择的发动机速度和歧管绝对压力，为要检索的各个气缸准备称为定时图的映射数据。 时序图使得系统能够响应于从气缸排气口到传感器的距离和发动机的操作条件，从汇合点中的空气/燃料比的实际行为近似的采样数据中选择一个。
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