公开(公告)号：US5715796A

公开(公告)日：1998-02-10

申请号：US603278

申请日：1996-02-20

Applicant: Norio Suzuki ,  Koichi Fujimori ,  Yusuke Hasegawa ,  Hiroki Munakata ,  Shusuke Akazaki ,  Masuhiro Yoshizaki

Inventor： Norio Suzuki ,  Koichi Fujimori ,  Yusuke Hasegawa ,  Hiroki Munakata ,  Shusuke Akazaki ,  Masuhiro Yoshizaki

IPC: F02D41/00 ,  F02D41/02 ,  F02D41/06 ,  F02D41/14 ,  F02D41/34 ,  F02D41/10

CPC classification number: F02D41/1486 ,  F02D41/008 ,  F02D41/021 ,  F02D41/06 ,  F02D41/062 ,  F02D41/1402 ,  F02D41/1441 ,  F02D41/1475 ,  F02D41/1477 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1417 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1426 ,  F02D2041/1431 ,  F02D2041/1433 ,  F02D41/0085 ,  F02D41/1456

Abstract: There is provided an air-fuel ratio control system for an internal combustion engine installed on an automotive vehicle. The control system controls the air-fuel ratio of a mixture supplied to the engine to a value leaner than a stoichiometric air-fuel ratio immediately after the start of the engine. Operating conditions of the engine and/or operating conditions of the automotive vehicle are detected. Starting of the vehicle is predicted based on the detected operating conditions of the engine and/or the detected operating conditions of the automotive vehicle. The air-fuel ratio of the mixture supplied to the engine is changed to a richer value than the leaner value when the starting of the vehicle is predicted.

Abstract translation: 提供了一种用于安装在机动车辆上的内燃机的空燃比控制系统。 控制系统将供给发动机的混合物的空燃比控制在发动机启动之后的比理论空燃比更小的值。 检测发动机的运转状况和/或机动车辆的运转状况。 基于检测到的发动机的运行条件和/或检测到的机动车辆的运行状况来预测车辆的起动。 当预测出车辆的起动时，供给发动机的混合物的空燃比被改变为比精度值更丰富的值。

公开(公告)号：US5638801A

公开(公告)日：1997-06-17

申请号：US606096

申请日：1996-02-23

Applicant: Hidetaka Maki ,  Shusuke Akazaki ,  Yusuke Hasegawa

Inventor： Hidetaka Maki ,  Shusuke Akazaki ,  Yusuke Hasegawa

IPC: F02D41/14 ,  F01N3/20 ,  G06G7/70

CPC classification number: F02D41/1402 ,  F02D41/1473 ,  F02D2041/1415 ,  F02D2041/1426 ,  F02D2041/1433 ,  F02D41/1456

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US5613481A

公开(公告)日：1997-03-25

申请号：US606077

申请日：1996-02-23

Applicant: Hiroshi Kitagawa ,  Shusuke Akazaki ,  Hidetaka Maki

Inventor： Hiroshi Kitagawa ,  Shusuke Akazaki ,  Hidetaka Maki

IPC: F02M25/08 ,  F02D41/00 ,  F02D41/14

CPC classification number: F02D41/0032 ,  F02B2275/18

Abstract: A control system for an internal combustion engine includes a canister for adsorbing evaporative fuel generated in the fuel tank, a purging passage extending between the canister and the intake system, for purging evaporative fuel into the intake system, and a purge control valve for controlling a flow rate of evaporative fuel to be supplied to the intake system through the purging passage. Various sensors detect operating conditions of the engine, and an ECU controls the purge control valve according to detected operating conditions. An amount of fuel to be supplied to the engine is feedback-controlled by calculating a feedback control amount, based on an output from an air-fuel ratio sensor arranged in the exhaust system by using a controller of a recurrence formula type, and the amount of fuel to be supplied to the engine is controlled based on the calculated feedback control amount, such that an air-fuel ratio of an air-fuel mixture supplied to the engine is converged to a desired air-fuel ratio. An average value of the feedback control amount is calculated while the purge control valve is open. The purge control valve is controlled based on the calculated average value.

Abstract translation: 一种用于内燃机的控制系统包括用于吸收在燃料箱中产生的蒸发燃料的罐，在罐和进气系统之间延伸的净化通道，用于将蒸发燃料吹扫到进气系统中;以及清洗控制阀，用于控制 通过清洗通道供给到进气系统的蒸发燃料的流量。 各种传感器检测发动机的运行状况，ECU根据检测到的运行条件控制排气控制阀。 通过使用布置在排气系统中的空燃比传感器的输出，通过使用复发公式类型的控制器计算反馈控制量，并且将量供给发动机的燃料量 基于所计算的反馈控制量来控制供给到发动机的燃料，使得供给到发动机的空气燃料混合物的空燃比被收敛到期望的空燃比。 在清洗控制阀打开时计算反馈控制量的平均值。 基于计算的平均值控制清洗控制阀。

公开(公告)号：US5590638A

公开(公告)日：1997-01-07

申请号：US545325

申请日：1995-10-19

Applicant: Yoichi Nishimura ,  Hidetaka Maki ,  Yusuke Hasegawa ,  Shusuke Akazaki

Inventor： Yoichi Nishimura ,  Hidetaka Maki ,  Yusuke Hasegawa ,  Shusuke Akazaki

IPC: F02D41/00 ,  F02D41/14 ,  F02D41/34

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US5568799A

公开(公告)日：1996-10-29

申请号：US495026

申请日：1995-06-27

Applicant: Shusuke Akazaki ,  Yoichi Nishimura

Inventor： Shusuke Akazaki ,  Yoichi Nishimura

IPC: F02D41/04 ,  F02D41/10 ,  F02D41/34

CPC classification number: F02D41/047 ,  F02D41/107 ,  F02D41/34 ,  F02B2275/18 ,  Y02T10/44

Abstract: A fuel injection control system for an internal combustion engine calculates an amount of fuel to be injected in a manner carrying out fuel transfer delay-dependent correction based on a delay of transfer of fuel injected from the time the fuel is injected into the intake passage of the engine to the time the fuel is drawn into a corresponding one of an at least one cylinder of the engine, with a predetermined calculating repetition period, and causes fuel injection to be carried out based on a result of the calculation. The amount of fuel to be injected is corrected during execution of the fuel injection based on a newest value of the result of the calculation.

Abstract translation: 用于内燃机的燃料喷射控制系统基于从燃料喷射到进气通道的时间喷射的燃料转移的延迟来执行燃料转移延迟相关校正的方式来计算要喷射的燃料量 发动机在燃料被抽入发动机的至少一个气缸中的对应的一个时间内，具有预定的计算重复周期，并且基于计算结果使燃料喷射被执行。 基于计算结果的最新值，在执行燃料喷射期间校正要喷射的燃料量。

公开(公告)号：US5558075A

公开(公告)日：1996-09-24

申请号：US514785

申请日：1995-08-14

Applicant: Hidetaka Maki ,  Yusuke Hasegawa ,  Shusuke Akazaki

Inventor： Hidetaka Maki ,  Yusuke Hasegawa ,  Shusuke Akazaki

IPC: F02D41/14

CPC classification number: F02D41/1473 ,  F02D41/1402 ,  F02D41/1477 ,  F02D41/1488 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/142 ,  F02D2041/1426 ,  F02D2041/1433 ,  F02D41/1456

Abstract: 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.

Abstract translation: 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））。

公开(公告)号：US5549092A

公开(公告)日：1996-08-27

申请号：US507974

申请日：1995-07-27

Applicant: Yusuke Hasegawa ,  Isao Komoriya ,  Shusuke Akazaki ,  Hidetaka Maki ,  Satoru Abe

Inventor： Yusuke Hasegawa ,  Isao Komoriya ,  Shusuke Akazaki ,  Hidetaka Maki ,  Satoru Abe

IPC: F02D45/00 ,  F02D41/04 ,  F02D41/18 ,  F02D41/32 ,  F02D41/34 ,  F02D41/10

CPC classification number: F02D41/182 ,  F02D41/045 ,  F02D41/32 ,  F02D2200/0402

Abstract: 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.

Abstract translation: 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 。

公开(公告)号：US5002028A

公开(公告)日：1991-03-26

申请号：US385573

申请日：1989-07-26

Applicant: Yasuhisa Arai ,  Norio Suzuki ,  Ichiro Sakai ,  Koji Sasajima ,  Shusuke Akazaki ,  Yuji Kawaguchi

Inventor： Yasuhisa Arai ,  Norio Suzuki ,  Ichiro Sakai ,  Koji Sasajima ,  Shusuke Akazaki ,  Yuji Kawaguchi

IPC: B60K31/04 ,  F02D11/10 ,  F02D31/00

CPC classification number: B60K31/047 ,  F02D11/105 ,  F02D31/003 ,  B60W2710/0605 ,  B60W2710/0644 ,  B60W2710/065 ,  F02D2011/102 ,  Y10S188/01

Abstract: Throttle control system for a vehicular internal combustion engine equipped with a stepper motor connected to a throttle valve provided at an engine air intake passage, wherein the position (the opening degree) of the throttle valve is controlled by the stepper motor in response to the vehicular engine operation. In one embodiment, various throttle positions are once determined including positions for engine idling and vehicle cruising and the largest of the positions is selected for optimally satisfying the whole operating condition. In another embodiment, when the engine is idling, the throttle valve is controlled such that engine speed converges toward a target speed. In the other embodiment, the stepper motor is varied its pulse rate and chopping duty for optimally control the throttle position according to the vehicular engine operation.

公开(公告)号：USRE42056E1

公开(公告)日：2011-01-25

申请号：US09945835

申请日：2001-09-05

Applicant: Shusuke Akazaki ,  Kohei Hanada ,  Yuji Yasui ,  Tadashi Satoh ,  Takashi Haga

Inventor： Shusuke Akazaki ,  Kohei Hanada ,  Yuji Yasui ,  Tadashi Satoh ,  Takashi Haga

IPC: F02M25/06

CPC classification number: B01D53/9495 ,  B01D53/9445 ,  B01D53/9486 ,  B01D53/96 ,  B01D2253/108 ,  B01D2253/3425 ,  F01N3/0835 ,  F01N3/0871 ,  F01N3/0878 ,  F01N9/00 ,  F01N13/009 ,  F01N13/0097 ,  F01N2240/36 ,  F01N2250/12 ,  F01N2370/40 ,  F01N2410/00 ,  F01N2410/12 ,  F02D9/04 ,  F02D9/1055 ,  F02D21/08 ,  F02M26/15 ,  F02M26/46 ,  F02M26/49 ,  Y02T10/20 ,  Y02T10/22 ,  Y02T10/47

Abstract: A system for purifying exhaust gas generated by an internal combustion engine including a bypass branching out from the exhaust pipe downstream of a catalyst and merging to the exhaust pipe, an adsorber installed in the bypass, a bypass valve member which closes the bypass, and an EGR conduit connected to the bypass at one end and connected to the air intake system for recirculating the exhaust gas to the air intake system. The bypass valve member is opened for a period after engine startup to introduce the exhaust gas such that the adsorber installed in the bypass adsorbs the unburnt HC component in the exhaust gas. The adsorber adsorbs the HC component when the exhaust temperature rises and the adsorbed component is recirculated to the air intake system through the EGR conduit. In the system, the bypass valve is provided at or close to the branching point in the exhaust pipe and a chamber is provided close to the branching point such that the conduit is connected to the bypass at the one end in the chamber. The bypass valve member is combined with an exhaust pipe valve member as a combination valve such that when the bypass valve member closes the bypass, the exhaust pipe valve member opens the exhaust pipe. With the arrangement, the system can effectively prevent the exhaust pipe from being clogged even when a valve for closing a bypass is stuck in the closed position. At the same time, the system can provide a relatively short EGR conduit for recirculating unburnt HC component adsorbed from the adsorber and the adsorption and desorption are conducted optimally.

Abstract translation: 一种用于净化由内燃机产生的废气的系统，所述内燃机包括从催化剂下游的排气管分支出并与排气管并流的旁路，安装在旁路中的吸附器，关闭旁路的旁通阀构件，以及 EGR管道在一端连接到旁路，并连接到进气系统，用于将废气再循环到进气系统。 旁通阀构件在发动机启动后打开一段时间以引入废气，使得安装在旁路中的吸附器吸附废气中的未燃HC组分。 当排气温度升高时，吸附器吸附HC组分，吸附组分通过EGR导管再循环到进气系统。 在该系统中，旁通阀设置在排气管中的分支点处或其附近，并且在靠近分支点设置室，使得导管在腔室的一端连接到旁路。 旁通阀构件与作为组合阀的排气管阀构件组合，使得当旁通阀构件关闭旁路时，排气管阀构件打开排气管。 通过这样的结构，即使关闭旁路的阀卡在闭合位置，也能够有效地防止排气管堵塞。 同时，该系统可以提供相对较短的EGR导管，用于再循环吸附器吸附的未燃烧的HC组分，吸附和解吸是最佳的。

公开(公告)号：US06647972B2

公开(公告)日：2003-11-18

申请号：US09975002

申请日：2001-10-12

Applicant: Masahiro Sato ,  Yoshihisa Iwaki ,  Masaki Ueno ,  Shusuke Akazaki ,  Yasuyuki Miyahara

Inventor： Masahiro Sato ,  Yoshihisa Iwaki ,  Masaki Ueno ,  Shusuke Akazaki ,  Yasuyuki Miyahara

IPC: F02M2507

CPC classification number: F02M26/46 ,  F01N2560/028 ,  F02D41/0065 ,  F02D41/222 ,  F02M26/15 ,  F02M26/49

Abstract: A state determining apparatus for an exhaust gas recirculation system is provided for appropriately determining the state of an exhaust gas recirculation system including an EGR passage. An exhaust gas recirculation system is arranged in an exhaust system of an internal combustion engine including an EGR passage for recirculating a portion of exhaust gases to an intake system in accordance with an operating state of the internal combustion engine. The state determining apparatus comprises a humidity sensor arranged in the EGR passage for detecting a humidity within the EGR passage, and an ECU for determining the state of the exhaust gas recirculation system based on a result detected by the humidity sensor.