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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
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。
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2.发明授权
公开(公告)号：US5363817A
公开(公告)日：1994-11-15
申请号：US216544
申请日：1994-03-23
申请人： Hiroshi Ikeda , Katsuhiko Kawai
发明人： Hiroshi Ikeda , Katsuhiko Kawai
CPC分类号： F01L1/34406 , F02D13/0219 , F02D41/0002 , F01L2201/00 , F02B2275/18 , F02D2041/001 , Y02T10/18 , Y02T10/42
摘要： A valve operation timing regulation apparatus for changing the operation timing of the intake valve, etc., of internal combustion engine, in which the controllability is improved by avoiding operation variations of a value actuator. The rotational phase angle difference between the crankshaft and the camshaft is changed by driving a member interposed between the two shafts. A target value of the rotational phase angle difference is determined and an actual value measured by detecting operating conditions at various parts of the engine. The control deviation between the target and the actual value is calculated, so that a control unit decides a present control value of the actuator, by selecting on the basis of the error and past control values, one of a plurality of control values predetermined in a region free of unfavorable influences of actuator characteristic variations.
摘要翻译： 一种用于改变通过避免值致动器的操作变化来提高可控性的内燃机的进气门等的操作定时的阀操作定时调节装置。 曲轴和凸轮轴之间的旋转相位角差通过驱动插入在两个轴之间的构件来改变。 确定旋转相位角差的目标值，并且通过检测发动机的各个部分的操作条件来测量实际值。 计算目标与实际值之间的控制偏差，使得控制单元通过基于误差和过去的控制值来选择执行器的当前控制值，其中预定的多个控制值中的一个控制值 区域不受执行器特性变化的不利影响。
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公开(公告)号：US5269271A
公开(公告)日：1993-12-14
申请号：US896389
申请日：1992-06-10
CPC分类号： G05B13/042 , F02D31/005 , F02D41/1401 , F02D41/16 , F02P5/1508 , F02B2075/027 , F02D2011/102 , F02D2011/103 , F02D2041/1415 , F02D2041/1433 , Y02T10/46
摘要： A speed control apparatus for an engine which is equipped with an air quantity control device for controlling an intake air quantity to the engine when being in an idling state and a speed control device for determining a control amount of the air quantity control device on the basis of the actual engine idle speed. For controlling the engine idle speed, the apparatus comprises a state variable outputting section for outputting the actual engine idle speed, the control amount of the air quantity control device and an ignition timing control amount of an igniter of the engine as state variables representing an internal state of a dynamic model of the engine, a speed deviation accumulating section for accumulating a deviation between the target speed and the actual engine idle speed, and an ignition timing deviation accumulating section for accumulating a deviation between a target ignition timing and the actual ignition timing. The control amount of the air quantity control device and the ignition timing control amount are calculated on the basis of optimal feedback gains of an air system and an ignition system predetermined on the basis of the dynamic model, the state variables, the speed deviation accumulated value and the ignition timing deviation accumulated value. This arrangement can simultaneously control the air quantity and the ignition timing without using an observer to easily control the engine idle speed to the target speed.
摘要翻译： 一种用于发动机的速度控制装置，其配备有用于在处于怠速状态时控制发动机的进气量的空气量控制装置和用于基于空气量控制装置的控制量确定的速度控制装置 的实际发动机怠速。 为了控制发动机怠速，该装置包括状态变量输出部分，用于输出实际的发动机怠速转速，空气量控制装置的控制量和发动机的点火器的点火正时控制量，作为表示内部的状态变量 发动机的动态模型的状态，用于累积目标速度与实际发动机怠速之间的偏差的速度偏差累加部，以及用于累积目标点火正时与实际点火正时之间的偏差的点火正时偏差累加部 。 空气量控制装置的控制量和点火正时控制量是基于基于动态模型，状态变量，速度偏差累积值预定的空气系统和点火系统的最佳反馈增益来计算的 和点火正时偏差累计值。 这种布置可以同时控制空气量和点火正时，而不用观察者容易地将发动机怠速控制到目标速度。
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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。
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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。
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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
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。
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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。
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8.发明授权公开(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。
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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
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。
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10.发明授权Temperature predicting system for internal combustion engine and temperature control system including same 失效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
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。
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