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1. 发明授权

US5544639A Temperature predicting system for internal combustion engine and temperature control system including same 失效
标题翻译：内燃机温度预报系统及包括温度控制系统的温度控制系统
公开(公告)号：US5544639A
公开(公告)日：1996-08-13
申请号：US298585
申请日：1994-08-30
申请人： Hirofumi Shouda , Yoshihiko Hirata , Katsuhiko Kawai , Toshio Kondo , Hiroshi Haraguchi
发明人： Hirofumi Shouda , Yoshihiko Hirata , Katsuhiko Kawai , Toshio Kondo , Hiroshi Haraguchi
IPC分类号： F01N9/00 , F02D41/14 , F02D41/24 , F02D41/00
CPC分类号： F01N9/005 , F02D41/1401 , F02D41/1446 , F02D41/28 , F02D2041/1415 , F02D2041/1423 , F02D2041/1431 , F02D2041/1433 , F02D2041/1434 , Y02T10/47
摘要： A temperature projecting system includes a temperature sensor for monitoring a temperature of an objective portion where the temperature changes depending on an engine operating condition. The temperature projecting system projects an actual temperature of the objective portion based on the monitored temperature but free of a first-order lag of the temperature sensor. A temperature control system includes the temperature projecting system. The temperature control system derives a correction amount for a basic control amount of an actuator based on a difference between the projected actual temperature and a target temperature. The basic control amount is corrected by the correction amount to derive a corrected control amount which controls the engine operating condition and thus the temperature of the objective portion.
摘要翻译：温度投影系统包括温度传感器，用于监视温度根据发动机工作状态而变化的目标部分的温度。温度投影系统基于所监视的温度来投影物镜部分的实际温度，但没有温度传感器的一阶滞后。温度控制系统包括温度投影系统。温度控制系统根据投影实际温度和目标温度之间的差异，得出致动器的基本控制量的校正量。通过校正量来校正基本控制量，从而导出控制发动机工作状态和因此目标部分的温度的校正控制量。

2. 发明授权

US5313395A Speed control system for an internal combustion engine 失效
标题翻译：内燃机转速控制系统
公开(公告)号：US5313395A
公开(公告)日：1994-05-17
申请号：US752655
申请日：1991-10-24
申请人： Katsuhiko Kawai , Tasunori Kato , Katsuhiko Nakabayashi , Shigenori Isomura , Hisashi Iida , Toshio Kondo
发明人： Katsuhiko Kawai , Tasunori Kato , Katsuhiko Nakabayashi , Shigenori Isomura , Hisashi Iida , Toshio Kondo
IPC分类号： F02D31/00 , F02D41/08 , F02D41/14 , F02D41/16 , G06F15/20
CPC分类号： F02D41/16 , F02D31/005 , F02D41/083 , F02D41/1401 , F02D2041/1415 , F02D2041/1431 , F02D2041/1433
摘要： The digital control unit of the present invention relates to improvements in what is called recent control, and more particularly relates to the idle rotating speed control unit of an internal combustion engine in which the idle rotating speed can be quickly converged to the target rotating speed in the case where a load given from the outside varies. Especially, when the value of the state variable is reversely calculated from the state in which open loop control is conducted, the initial value can be accurately determined.
摘要翻译： PCT No.PCT / JP90 / 01684第 371日期1991年10月24日 102（e）日期1991年10月24日PCT 1990年12月25日PCT公布。 WO91 / 10057 PCT出版物日本1991年7月11日。本发明的数字控制单元涉及所谓的近期控制的改进，更具体地涉及一种内燃机的怠速转速控制单元，其中怠速转速可以快速在从外部施加的载荷变化的情况下，会聚到目标转速。特别地，当从进行开环控制的状态反向计算状态变量的值时，可以准确地确定初始值。

3. 发明授权

US06591183B2 Control apparatus for internal combustion engine 有权
标题翻译：内燃机控制装置
公开(公告)号：US06591183B2
公开(公告)日：2003-07-08
申请号：US09838591
申请日：2001-04-20
申请人： Yosuke Ishikawa , Katsuhiko Kawai , Masayuki Kita
发明人： Yosuke Ishikawa , Katsuhiko Kawai , Masayuki Kita
IPC分类号： F02D4114
CPC分类号： F02D35/0007 , F02D13/0215 , F02D13/0253 , F02D41/1401 , F02D41/1441 , F02D41/1456 , F02D41/16 , F02D2011/102 , F02D2041/001 , F02D2041/1409 , F02D2041/1415 , F02D2041/1418 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433
摘要： An intermediate target value calculating unit calculates an intermediate target value &phgr;midtg(i) on the basis of an output &phgr;(i−1) of an A/F ratio sensor in computation of last time and a final target value &phgr;tg(i). By the computation, the intermediate target value &phgr;midtg(i) is set between the output &phgr;(i−1) of the A/F ratio sensor in computation of last time and the final target value &phgr;tg(i). A correction amount calculating unit calculates a correction amount AFcomp(i) of the target A/F ratio on the basis of a deviation &Dgr;&phgr;(i) between the intermediate target value &phgr;midtg(i) and the output &phgr;(i) of the A/F ratio sensor. Consequently, the control is hard to be influenced by variations in waste time of the subject to be controlled and an error in modeling. While maintaining the stability of the A/F ratio feedback control, higher gain can be achieved and robustness can be also increased.
摘要翻译：中间目标值计算单元基于上次计算中的A / F比传感器的输出phi（i-1）和最终目标值phitg（i）来计算中间目标值phimidtg（i）。通过计算，将中间目标值phimidtg（i）设置在上次计算的A / F比传感器的输出phi（i-1）和最终目标值phitg（i）之间。校正量计算单元基于中间目标值phimidtg（i）和A / F比特的输出phi（i）之间的偏差DELTAphi（i）来计算目标A / F比的校正量AFcomp（i） F比传感器。因此，控制难以受到受控对象的浪费时间的变化和建模误差的影响。在保持A / F比反馈控制的稳定性的同时，可以获得更高的增益并且还可以提高鲁棒性。

4. 发明授权

US06474308B2 Apparatus for detecting fuel property for internal combustion engine 失效
标题翻译：用于检测内燃机的燃料特性的装置
公开(公告)号：US06474308B2
公开(公告)日：2002-11-05
申请号：US09963497
申请日：2001-09-27
申请人： Hiroshi Okumura , Katsuhiko Kawai
发明人： Hiroshi Okumura , Katsuhiko Kawai
IPC分类号： G01N3322
CPC分类号： F02D41/0025 , F02D19/061 , F02D19/0628 , F02D19/0636 , F02D41/045 , F02D41/047 , F02D41/1401 , F02D41/1456 , F02D41/182 , F02D2041/1423 , F02D2041/1431 , F02D2041/1432 , F02D2041/1433 , F02D2041/1434 , F02D2200/021 , F02D2200/0612 , Y02T10/36
摘要： The following conditions are used as requirements for executing a fuel property detection: an intake air temperature is lower than a restart judging value; a water temperature is in a predetermined range; and it is in an idle operation. In a case that the requirements are established, an injection amount of fuel and a combustion amount of fuel are calculated. After that, the injection amount is corrected by using a learned value for correcting an error of system, and the combustion amount is corrected according an intake pressure. A fuel property parameter for evaluating the fuel property is calculated based on a ratio of an accumulated value of the combustion amount relative to an accumulated value of the injection amount during a predetermined time. A command value of the injection amount for a fuel injection valve is corrected according to the fuel property parameter calculated above. As a result, the fuel property is reflected in the command value of the injection amount.
摘要翻译：使用以下条件作为执行燃料特性检测的要求：进气温度低于再起动判定值; 水温处于预定范围内; 并且它处于空闲操作。在要求确定的情况下，计算燃料的喷射量和燃料的燃烧量。之后，通过使用用于校正系统误差的学习值来校正喷射量，并且根据进气压力校正燃烧量。基于燃料量的累积值相对于预定时间内的喷射量的累积值的比率来计算用于评价燃料特性的燃料特性参数。根据上述计算的燃料特性参数来校正燃料喷射阀的喷射量的指令值。结果，燃料特性反映在喷射量的指令值中。

5. 发明授权

US4785780A Control apparatus 失效
标题翻译：控制装置
公开(公告)号：US4785780A
公开(公告)日：1988-11-22
申请号：US69514
申请日：1987-07-02
申请人： Katsuhiko Kawai
发明人： Katsuhiko Kawai
IPC分类号： F02B75/02 , F02D31/00 , F02D41/14 , F02D41/16 , F02P5/145
CPC分类号： F02P5/1455 , F02D31/003 , F02D41/1401 , F02D41/16 , F02B2075/027 , F02D2041/1409 , F02D2041/1415 , F02D2041/1433 , Y02T10/46
摘要： A state value related to operating state of a controlled object is detected. An actuator serves to adjust the operating state of the controlled object. A target control quantity of the actuator is determined on the basis of the detected state value. The actuator is controlled in accordance with the determined target control quantity. The detected state value and the determined target control quantity are stored. A new target control quantity of the actuator is calculated on the basis of a vector of predetermined optimal feedback gain and a vector of state variables. The optimal feedback gain depends on model constants in a dynamic model which is an approximation to the operating state of the controlled object. The state variables are composed directly of the stored state value and the stored control quantity.
摘要翻译：检测与受控对象的操作状态相关的状态值。致动器用于调节受控对象的操作状态。基于检测到的状态值来确定致动器的目标控制量。执行器根据确定的目标控制量进行控制。存储检测到的状态值和确定的目标控制量。基于预定的最佳反馈增益的向量和状态变量的向量来计算执行器的新的目标控制量。最佳反馈增益取决于动态模型中的模型常数，该模型常数是受控对象的运行状态的近似值。状态变量直接由存储的状态值和存储的控制量组成。

6. 发明授权

US06718252B2 Control apparatus for internal combustion engine 失效
标题翻译：内燃机控制装置
公开(公告)号：US06718252B2
公开(公告)日：2004-04-06
申请号：US09981241
申请日：2001-10-18
申请人： Katsuhiko Kawai , Hisashi Iida , Muneyuki Iwata
发明人： Katsuhiko Kawai , Hisashi Iida , Muneyuki Iwata
IPC分类号： F02D4114
CPC分类号： F02D41/1401 , F02D41/1454 , F02D41/16 , F02D2041/1415 , F02D2041/1422 , F02D2041/1433
摘要： Calculation of a present air-fuel ratio correction coefficient correction value &Dgr;FAF (i) is based on a control parameter calculated by an ECU, a change in air-fuel ratio detected by an air-fuel ratio sensor, a deviation of an actual air-fuel ratio from a target air-fuel ratio and an immediately preceding air-fuel ratio correction coefficient correction value &Dgr;FAF (i−1) Then, a present air-fuel ratio correction coefficient FAF (i) is found by adding the present air-fuel ratio correction coefficient correction value &Dgr;FAF (i) to an immediately preceding air-fuel ratio correction coefficient FAF (i−1). As a result, the air-fuel ratio correction coefficients is not be thrown into confusion and no phenomenon of the air-fuel ratio being thrown into confusion occurs even if the control parameter is changed in accordance with operating conditions of the engine.
摘要翻译：目前的空燃比校正系数校正值ΔFAF（i）的计算基于由ECU计算的控制参数，由空燃比传感器检测的空燃比的变化，实际空燃比校正系数校正值的偏差，从目标空燃比和前一个空燃比校正系数校正值ΔFAF（i-1）得到的燃料比，然后，通过将现有的空气燃料添加到现有的空燃比校正系数FAF（i）比率校正系数校正值DeltaFAF（i）与前一个空燃比校正系数FAF（i-1）。结果，空燃比校正系数不会被混淆，即使控制参数根据发动机的运行条件而变化，也不会发生空燃比的混乱现象。

7. 发明授权

US06321721B1 Apparatus for detecting the fuel property for an internal combustion engine 失效
标题翻译：用于检测内燃机的燃料特性的装置
公开(公告)号：US06321721B1
公开(公告)日：2001-11-27
申请号：US09494245
申请日：2000-01-31
申请人： Hiroshi Okumura , Katsuhiko Kawai
发明人： Hiroshi Okumura , Katsuhiko Kawai
IPC分类号： F02D4136
CPC分类号： F02D41/0025 , F02D19/061 , F02D19/0628 , F02D19/0636 , F02D41/045 , F02D41/047 , F02D41/1401 , F02D41/1456 , F02D41/182 , F02D2041/1423 , F02D2041/1431 , F02D2041/1432 , F02D2041/1433 , F02D2041/1434 , F02D2200/021 , F02D2200/0612 , Y02T10/36
摘要： The following conditions are used as requirements for executing a fuel property detection: an intake air temperature is lower than a restart judging value; a water temperature is in a predetermined range; and it is in an idle operation. In a case that the requirements are established, an injection amount of fuel and a combustion amount of fuel are calculated. After that, the injection amount is corrected by using a learned value for correcting an error of system, and the combustion amount is corrected according an intake pressure. A fuel property parameter for evaluating the fuel property is calculated based on a ratio of an accumulated value of the combustion amount relative to an accumulated value of the injection amount during a predetermined time. A command value of the injection amount for a fuel injection valve is corrected according to the fuel property parameter calculated above. As a result, the fuel property is reflected in the command value of the injection amount.
摘要翻译：使用以下条件作为执行燃料特性检测的要求：进气温度低于再起动判定值; 水温处于预定范围内; 并且它处于空闲操作。在要求确定的情况下，计算燃料的喷射量和燃料的燃烧量。之后，通过使用用于校正系统误差的学习值来校正喷射量，并且根据进气压力校正燃烧量。基于燃料量的累积值相对于预定时间内的喷射量的累积值的比率来计算用于评价燃料特性的燃料特性参数。根据上述计算的燃料特性参数来校正燃料喷射阀的喷射量的指令值。结果，燃料特性反映在喷射量的指令值中。

8. 发明授权

US5845489A Abnormality detector for air-fuel ratio control system 失效
标题翻译：空燃比控制系统异常检测器
公开(公告)号：US5845489A
公开(公告)日：1998-12-08
申请号：US743741
申请日：1996-11-07
申请人： Hisayo Dohta , Shigenori Isomura , Katsuhiko Kawai
发明人： Hisayo Dohta , Shigenori Isomura , Katsuhiko Kawai
IPC分类号： F01N11/00 , F02D41/14 , F01N3/00
CPC分类号： F02D41/1441 , F01N11/00 , F01N11/007 , F01N2550/02 , F01N2550/14 , F01N2900/0421 , F02D41/1456 , Y02T10/47
摘要： An inflow quantity of an exhaust gas component flowing into a catalyst is calculated based upon air fuel ratio detected by an upstream air fuel ratio sensor which is provided on the upstream side of the catalyst. In addition, an outflow quantity of an exhaust gas component flowing out of the catalyst is calculated based upon air fuel ratio detected by a downstream air fuel ratio sensor which is provided on the downstream side of the catalyst. The quantity of an exhaust gas component absorbed by the catalyst can be detected in real time based upon a difference between the inflow quantity and outflow quantity. Thus, a state of the catalyst can be precisely detected in real time.
摘要翻译：基于设置在催化剂的上游侧的上游空燃比传感器检测出的空燃比，计算流入催化剂的废气成分的流入量。此外，基于设置在催化剂下游侧的下游空燃比传感器检测出的空燃比，计算出从催化剂流出的废气成分的流出量。可以基于流入量和流出量之间的差异实时地检测催化剂吸收的废气成分的量。因此，可以实时精确地检测催化剂的状态。

9. 发明授权

US5479897A Control apparatus for internal combustion engine 失效
标题翻译：内燃机控制装置
公开(公告)号：US5479897A
公开(公告)日：1996-01-02
申请号：US293243
申请日：1994-08-19
申请人： Katsuhiko Kawai , Hisayo Douta , Hiroshi Ikeda
发明人： Katsuhiko Kawai , Hisayo Douta , Hiroshi Ikeda
IPC分类号： F02D41/16 , F02B75/02 , F02D31/00 , F02D41/14 , G05B13/02 , F02M3/00
CPC分类号： F02D41/1401 , F02D31/005 , F02B2075/027 , F02D2011/102 , F02D2041/1409 , F02D2041/1415 , F02D2041/1423 , F02D2041/1433
摘要： In order to optimally suppress effects of error exerted upon control results by any modeling error which may arise from load fluctuations or the like of the internal combustion engine approximated as a dynamic model under an advanced control theory, present and past values of an operating quantity and control quantity which correspond respectively to a control input and control output of an internal combustion engine are utilized as state variable quantities representing the internal state of the dynamic model of an internal combustion engine. Furthermore, the target value and difference are accumulated for the foregoing control quantity. Modeling of the internal combustion engine is performed in realtime, and optimal feedback gain is calculated periodically or under certain specified conditions for a regulator constructed on the basis of these model constants calculated in realtime. The operating quantity for the internal combustion engine is determined on the basis of this calculated optimal feedback gain, the foregoing state variable quantities, and the foregoing accumulated difference value.
摘要翻译：为了最佳地抑制由先进控制理论近似为动态模型的内燃机的负载波动等可能引起的任何建模误差对控制结果产生的误差的影响，工作量的现值和过去值以及将分别对应于内燃机的控制输入和控制输出的控制量用作表示内燃机的动态模型的内部状态的状态变量。此外，对于上述控制量，累积目标值和差。内燃机的建模是实时执行的，并且对于根据实时计算的这些模型常数构建的调节器，在周期性或某些特定条件下计算最佳反馈增益。基于该计算的最佳反馈增益，前述状态可变量和上述累积差值来确定内燃机的运行量。

10. 发明授权

US5390489A Air-fuel ratio control system for internal combustion engine 失效
标题翻译：内燃机空燃比控制系统
公开(公告)号：US5390489A
公开(公告)日：1995-02-21
申请号：US134814
申请日：1993-10-12
申请人： Katsuhiko Kawai , Hisayo Douta
发明人： Katsuhiko Kawai , Hisayo Douta
IPC分类号： F02D41/14 , F01N3/20
CPC分类号： F02D41/1441 , F02D41/1401 , F02D41/1481 , F02D2041/1409 , F02D2041/1415 , F02D2041/1418 , F02D2041/1431 , F02D2041/1433
摘要： An air-fuel ratio control system for an internal combustion engine uses a dynamic model which is set as an approximation to a controlled object. The controlled object covers an operation sequence from a fuel injection valve to an air-fuel ratio sensor which is provided downstream of a catalytic converter for detecting an actual air-fuel ratio based on the exhaust gas downstream of the catalytic converter. The system derives a fuel injection amount to be fed to the engine by performing a state-feedback control in such a manner as to control the actual air-fuel ratio to a target air-fuel ratio. The system performs the state-feedback control using, as state variables, current and past input and output data relative to the dynamic model. Accordingly, the actual air-fuel ratio monitored on the downstream-side of the catalytic converter is controlled to the target air-fuel ratio without delay by directly deriving the fuel injection amount using the state-feedback control.
摘要翻译：用于内燃机的空燃比控制系统使用被设置为对受控对象的近似的动态模型。受控对象覆盖从燃料喷射阀到空燃比传感器的操作顺序，其设置在催化转化器的下游，用于基于催化转化器下游的排气来检测实际空燃比。该系统通过以将实际空燃比控制为目标空燃比的方式进行状态反馈控制，得到供给到发动机的燃料喷射量。系统执行状态反馈控制，使用作为状态变量的当前和过去的输入和输出数据相对于动态模型。因此，通过使用状态反馈控制直接导出燃料喷射量，将催化转化器的下游侧监视的实际空燃比无延迟地控制在目标空燃比。

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