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1. 发明授权

US5806506A Cylinder-by-cylinder air-fuel ratio-estimating system for internal combustion engines 失效
标题翻译：用于内燃机的缸缸空燃比估计系统
公开(公告)号：US5806506A
公开(公告)日：1998-09-15
申请号：US900879
申请日：1997-07-25
申请人： Toru Kitamura , Hiroshi Ohno , Yusuke Hasegawa , Yoichi Nishimura , Kenichiro Ishii
发明人： Toru Kitamura , Hiroshi Ohno , Yusuke Hasegawa , Yoichi Nishimura , Kenichiro Ishii
IPC分类号： F02D41/00 , F02D41/14 , F02D41/34
CPC分类号： F02D41/008 , F02D41/1401 , F02D41/1481 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/1431 , F02D2041/1433 , F02D2200/0402 , F02D41/0047 , F02D41/1456
摘要： A cylinder-by-cylinder air-fuel ratio-estimating system for an internal combustion engine includes an air-fuel ratio sensor arranged in the exhaust system of the engine, at a confluent portion of the exhaust system. The air-fuel ratio of a mixture supplied to each of the cylinders is estimated based the output from the air-fuel ratio sensor, by using an observer for observing the internal operative state of the exhaust system based on a model representative of the behavior of the exhaust system. The air-fuel ratio at the confluent portion is estimated by using a delay parameter representative of the response delay of the air-fuel ratio sensor, and the air-fuel ratio of the mixture supplied to each of the cylinders is estimated by using the estimated air-fuel ratio at the confluent portion. The estimated air-fuel ratio of the mixture supplied to each of the cylinders is subsequently used for estimating a value of the air-fuel ratio at the confluent portion of the exhaust system.
摘要翻译：用于内燃机的逐缸气缸比空气比估计系统包括布置在发动机的排气系统中的排气系统的汇合部分处的空燃比传感器。基于来自空燃比传感器的输出，基于表示排气系统的内部运行状态的观察者，基于表示排气系统的行为的模型，估计供给到各气缸的混合气体的空燃比排气系统。通过使用表示空燃比传感器的响应延迟的延迟参数来估计汇合部分的空燃比，并且通过使用估计的空气 - 燃料比传感器来估计提供给每个气缸的混合物的空燃比汇合部分的空燃比。供给到各个气缸的混合物的估计空燃比随后被用于估计排气系统的汇合部分处的空燃比的值。

2. 发明授权

US5758630A Fuel metering control system for internal combustion engine 失效
标题翻译：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。

3. 发明授权

US5649518A Fuel metering control system for internal combustion engine 失效
标题翻译：内燃机燃油计量控制系统
公开(公告)号：US5649518A
公开(公告)日：1997-07-22
申请号：US514859
申请日：1995-08-14
申请人： Hidetaka Maki , Yusuke Hasegawa , Yoichi Nishimura
发明人： Hidetaka Maki , Yusuke Hasegawa , Yoichi Nishimura
IPC分类号： F02D41/12 , F02D41/14
CPC分类号： F02D41/1402 , F02D41/126 , F02D41/1477 , 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 feedback correction coefficient (KSTR) is calculated using an adaptive controller and a feedback control is carried out by multiplying the quantity of fuel injection by the coefficient in the feedback control region. In view of the situation, once leaving the feedback control region due to, for example, fuel cutoff, but soon returning to the feedback control region shortly, internal variables of the adaptive controller necessary for coefficient calculation are held so as to make it unnecessary to determine the variables and to keep the control continuity and to enhance the controllability. On the other hand, if it takes a longer time to return the region, the variables are set to initial values.
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）。使用自适应控制器计算反馈校正系数（KSTR），并且通过将反馈控制区域中的系数乘以燃料喷射量来进行反馈控制。鉴于这种情况，一旦离开反馈控制区域，由于例如燃料切断，但很快返回到反馈控制区域，则保持系数计算所需的自适应控制器的内部变量，从而不需要确定变量并保持控制的连续性并增强可控性。另一方面，如果返回区域需要较长时间，则将变量设置为初始值。

4. 发明授权

US5542404A Trouble detection system for internal combustion engine 失效
标题翻译：内燃机故障检测系统
公开(公告)号：US5542404A
公开(公告)日：1996-08-06
申请号：US383373
申请日：1995-02-03
申请人： Yusuke Hasegawa , Yoichi Nishimura , Isao Komoriya , Shushuke Akazaki
发明人： Yusuke Hasegawa , Yoichi Nishimura , Isao Komoriya , Shushuke Akazaki
IPC分类号： F02M65/00 , F02D41/00 , F02D41/14 , F02D41/22 , F02D41/34 , F02D41/36 , F02D45/00
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。

5. 发明授权

US5505174A EGR rate estimation system for internal combustion engine 失效
标题翻译：内燃机EGR率估算系统
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
IPC分类号： F02D21/08 , F02D41/00 , F02M25/07 , F02D41/04 , F02P5/15
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。

6. 发明授权

US5806012A Fuel metering control system for internal combustion engine 失效
标题翻译：内燃机燃油计量控制系统
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
IPC分类号： F02D41/14 , G06G7/70 , F02M51/00
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。

7. 发明授权

US5758490A Fuel metering control system for internal combustion engine 失效
标题翻译：内燃机燃油计量控制系统
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
IPC分类号： F02D41/00 , F02D41/14 , F02D41/34 , F01N3/20
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。

8. 发明授权

US5692485A Feedback control system using adaptive control 失效
标题翻译：反馈控制系统采用自适应控制
公开(公告)号：US5692485A
公开(公告)日：1997-12-02
申请号：US401430
申请日：1995-03-09
申请人： Hidetaka Maki , Yusuke Hasegawa , Isao Komoriya , Yoichi Nishimura
发明人： Hidetaka Maki , Yusuke Hasegawa , Isao Komoriya , Yoichi Nishimura
IPC分类号： F02D45/00 , F02D41/04 , F02D41/14 , G05B13/02
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。

9. 发明授权

US5569847A Air-fuel ratio estimator for internal combustion engine 失效
标题翻译：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。

10. 发明授权

US5558076A Fuel metering control system for internal combustion engine 失效
标题翻译：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。

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