公开(公告)号：US5537817A

公开(公告)日：1996-07-23

申请号：US452980

申请日：1995-05-30

Applicant: Shusuke Akazaki ,  Hidetaka Maki ,  Kei Machida

Inventor： Shusuke Akazaki ,  Hidetaka Maki ,  Kei Machida

IPC: F02D41/14 ,  F01N3/20

CPC classification number: F02D41/1441 ,  F02D41/1495 ,  F02B2275/18 ,  F02D41/1456

Abstract: An air-fuel ratio control system for an internal combustion engine having first and second catalytic converters arranged in the exhaust passage comprises first to third exhaust gas component concentration sensors arranged in the exhaust passage, the first one being arranged upstream of the first catalytic converter, the second one at a location intermediate between the first and second catalytic converters, and the third one downstream of the second catalytic converter. An ECU carries out feedback control of the air-fuel ratio of a mixture supplied to the engine to a desired air-fuel ratio in response to an output from the first exhaust gas component concentration sensor. A first feedback control parameter for use in the feedback control is calculated, based on an output from the second exhaust gas component concentration sensor. A second feedback control parameter for use in the calculation of the first feedback control parameter is calculated, based on an output from the third exhaust gas component concentration sensor.

Abstract translation: 具有布置在排气通道中的第一和第二催化转化器的内燃机的空燃比控制系统包括布置在排气通道中的第一至第三排气组分浓度传感器，第一排气组分浓度传感器布置在第一催化转化器的上游， 第二催化转化器在第一催化转化器和第二催化转化器之间的中间位置，第二催化转化器下游的第三催化转化器。 ECU响应于来自第一排气组分浓度传感器的输出，对供给到发动机的混合物的空燃比进行反馈控制至期望的空燃比。 基于来自第二排气成分浓度传感器的输出，计算用于反馈控制的第一反馈控制参数。 基于来自第三排气分量浓度传感器的输出，计算用于计算第一反馈控制参数的第二反馈控制参数。

公开(公告)号：US5531208A

公开(公告)日：1996-07-02

申请号：US305162

申请日：1994-09-13

Applicant: Yusuke Hasegawa ,  Isao Komoriya ,  Shusuke Akazaki ,  Eisuke Kimura

Inventor： Yusuke Hasegawa ,  Isao Komoriya ,  Shusuke Akazaki ,  Eisuke Kimura

IPC: F02D41/00 ,  F02D41/14 ,  F02D41/34 ,  F02D45/00

CPC classification number: F02D41/008 ,  F02D41/1401 ,  F02D41/1473 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1417 ,  F02D2041/1418 ,  F02D2041/1431 ,  F02D2041/1433 ,  F02D41/1456

Abstract: A system for controlling an air-fuel ratio of an air-fuel mixture supplied to each cylinder of a multicylinder internal combustion engine. A first feedback loop is provided for converging a first air-fuel ratio at a location at least either at or downstream of a confluence point of an exhaust system to a first desired air-fuel ratio by multiplying a first feedback gain to a first error therebetween. And a second feedback loop is provided in the first loop for converging a second current air-fuel ratio at each cylinder to a second desired air-fuel ratio by multiplying a second feedback gain to a second error. The first feedback loop and said second feedback loop are connected in series such that the second loop located inside the first loop. With the arrangement. the second loop operates the second air-fuel ratio converges to converge the second air-fuel ratio to the first air-fuel ratio which in turn tends to converge on the first desired air-fuel ratio such that the air-fuel ratios of all cylinders can therefore be converged on the desired air-fuel ratio.

Abstract translation: 一种用于控制供应到多缸内燃机的每个气缸的空气燃料混合物的空燃比的系统。 提供第一反馈回路，用于通过将第一反馈增益乘以第一反馈增益与其间的第一误差，将排气系统的汇合点的至少一个或下游的位置处的第一空燃比收敛到第一期望的空燃比 。 并且在第一回路中提供第二反馈回路，用于通过将第二反馈增益乘以第二误差来将每个气缸处的第二当前空燃比收敛到第二所需空燃比。 第一反馈回路和所述第二反馈回路串联连接，使得位于第一回路内的第二回路。 随着安排。 所述第二回路操作所述第二空燃比收敛以将所述第二空燃比收敛到所述第一空燃比，所述第一空燃比又趋于收敛于所述第一期望空燃比，使得所有气缸的空燃比 因此可以收敛于期望的空燃比。

公开(公告)号：US5363648A

公开(公告)日：1994-11-15

申请号：US172896

申请日：1993-12-27

Applicant: Shusuke Akazaki ,  Yusuke Hasegawa ,  Yoichi Nishimura ,  Isao Komoriya

Inventor： Shusuke Akazaki ,  Yusuke Hasegawa ,  Yoichi Nishimura ,  Isao Komoriya

IPC: F02D41/04 ,  F02D41/00 ,  F02D41/14 ,  F02D41/34 ,  F01N3/22

CPC classification number: F02D41/008 ,  F02D41/1401 ,  F02D41/1408 ,  F02D41/1443 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1433 ,  F02D41/1456

Abstract: A system for controlling an air/fuel ratio of a four-cylinder internal combustion engine. In the system, an actual air/fuel ratio, at least at upstream or downstream of a catalytic converter installed at an exhaust system of the engine, is intentionally oscillated at least either in its amplitude or cycle. A characteristic of a desired air/fuel ratio as a periodic function is established with respect to time such that the desired air/fuel ratio varies at least either at a predetermined amplitude or cycle within a predetermined period. The characteristic is sampled by a time interval determined on the basis of a time interval between TDC crank angle positions of the engine. Each cylinder's desired air/fuel ratio is then determined from the sampled data, and a fuel injection amount for each cylinder is determined from the respective cylinder's desired air/fuel ratios. Fuel is then supplied to each cylinder in response to the determined fuel injection amount. The actual air/fuel ratio at each cylinder is detected or estimated and feedback controlled to the desired air/fuel ratio.

Abstract translation: 一种用于控制四缸内燃机的空燃比的系统。 在该系统中，至少在安装在发动机的排气系统处的催化转化器的上游或下游的实际空气/燃料比有意地以其振幅或循环中的至少一个振荡。 相对于时间建立期望的空气/燃料比作为周期性函数的特性，使得期望的空气/燃料比在预定时间段内至少以预定的幅度或周期变化。 基于发动机的TDC曲柄角位置之间的时间间隔确定的时间间隔对特性进行采样。 然后根据采样数据确定每个气缸所需的空气/燃料比，并且根据相应气缸的期望的空气/燃料比确定每个气缸的燃料喷射量。 响应于所确定的燃料喷射量，燃料被提供给每个气缸。 检测或估计每个气缸处的实际空气/燃料比，并将其反馈控制到所需的空气/燃料比。

公开(公告)号：US09587612B2

公开(公告)日：2017-03-07

申请号：US13985143

申请日：2012-02-20

Applicant: Shusuke Akazaki ,  Yuji Yamamoto ,  Toshitaka Hachiro ,  Gaku Sato

Inventor： Shusuke Akazaki ,  Yuji Yamamoto ,  Toshitaka Hachiro ,  Gaku Sato

IPC: F02M69/00 ,  F02D35/02 ,  F02M57/00 ,  F02B23/10 ,  G01L23/10 ,  F02M61/14 ,  F02B75/12

CPC classification number: F02M69/00 ,  F02B23/104 ,  F02B2075/125 ,  F02D35/023 ,  F02M57/005 ,  F02M61/14 ,  F02M2200/247 ,  G01L23/10 ,  Y02T10/123 ,  Y02T10/125

Abstract: An in-cylinder pressure detecting device of a direct injection type internal combustion engine is provided in which a ring-shaped pressure detection element (34) surrounding a fuel injection hole (33b) is provided in the vicinity of an extremity of an injector (20) that injects fuel into a combustion chamber. Since the pressure detection element is provided on the injector, not only is it unnecessary to change the shape or structure of the cylinder head or the combustion chamber in order to provide the pressure detection element, but it is also possible to cool the pressure detection element (34) by fuel passing through the inside of the injector to thus enhance the precision of pressure detection and the durability. Further, since the ring-shaped pressure detection element (34) surrounds the periphery of the fuel injection hole (33b), it is possible to maximize the dimensions of the pressure detection element (34) to thus further enhance the precision of pressure detection while avoiding interference between the pressure detection element (34) and fuel injected via the fuel injection hole (33b).

Abstract translation: 提供一种直喷式内燃机的缸内压力检测装置，其中，在喷射器（20）的末端附近设置围绕燃料喷射孔（33b）的环状压力检测元件（34） ）将燃料喷射到燃烧室中。 由于压力检测元件设置在喷射器上，为了提供压力检测元件，不仅不需要改变气缸盖或燃烧室的形状或结构，而且还可以将压力检测元件 （34）通过喷射器内部的燃料，从而提高压力检测的精度和耐久性。 此外，由于环状压力检测元件34围绕燃料喷射孔33b的周围，所以能够使压力检测元件34的尺寸最大化，能够进一步提高压力检测的精度， 避免压力检测元件（34）与经由燃料喷射孔（33b）喷射的燃料之间的干扰。

公开(公告)号：US08024107B2

公开(公告)日：2011-09-20

申请号：US11896203

申请日：2007-08-30

Applicant: Takahide Mizuno ,  Shusuke Akazaki ,  Tetsuya Ishiguro

Inventor： Takahide Mizuno ,  Shusuke Akazaki ,  Tetsuya Ishiguro

IPC: F02P5/153

CPC classification number: F02P5/153 ,  F02D35/023 ,  F02D35/028 ,  F02D2041/1432 ,  F02P5/1504 ,  Y02T10/46

Abstract: An ignition timing control system for an internal combustion engine, which is capable of ensuring both stability of control in a steady operating condition of the engine, and an excellent follow-up property of a controlled variable to a target value in a transient operating condition of the engine, even when the controlled variable contains a lot of high-frequency noise components. In the ignition timing control system, a maximum pressure angle-calculating section calculates a maximum pressure angle based on an in-cylinder pressure and a crank angle position. A target angle-calculating section calculates a target angle. A maximum pressure angle controller calculates a maximum pressure angle correction term with a control algorithm to which is applied a sliding mode control algorithm, using a value obtained by performing ε-filtering on a switching function, such that the maximum pressure angle converges to the target angle. The ignition timing is calculated by adding corrected ignition timing to the value.

Abstract translation: 一种用于内燃机的点火正时控制系统，其能够确保在发动机的稳定运行状态下的控制的稳定性，以及在瞬态运行状态下控制变量与目标值的良好追随性 发动机，即使受控变量包含大量的高频噪声分量。 在点火正时控制系统中，最大压力角计算部根据缸内压力和曲柄角位置来计算最大压力角。 目标角度计算部分计算目标角度。 最大压力角控制器利用控制算法计算最大压力角校正项，该控制算法应用滑动模式控制算法，使用通过对切换功能进行过滤获得的值，使得最大压力角收敛于 目标角度。 通过将校正的点火正时与该值相加来计算点火正时。

公开(公告)号：US07606650B2

公开(公告)日：2009-10-20

申请号：US11798030

申请日：2007-05-09

Applicant: Takahide Mizuno ,  Shusuke Akazaki ,  Hiroyuki Sugiura ,  Yuji Yamamoto ,  Mitsuo Hashizume ,  Kentaro Onuma

Inventor： Takahide Mizuno ,  Shusuke Akazaki ,  Hiroyuki Sugiura ,  Yuji Yamamoto ,  Mitsuo Hashizume ,  Kentaro Onuma

IPC: G01L1/00 ,  G01M15/00

CPC classification number: F02D41/2474 ,  F02D35/023 ,  F02D41/1448 ,  F02D41/2441 ,  F02D2041/1433 ,  G01M15/08

Abstract: An in-cylinder pressure detection device for an internal combustion engine, which is capable of calculating a hysteresis amount properly to thereby detect in-cylinder pressure with high accuracy. The in-cylinder pressure detection device comprises an in-cylinder pressure sensor that detects in-cylinder pressure as a detected in-cylinder pressure. The in-cylinder pressure detection device estimates an in-cylinder pressure generated when combustion is not performed in the cylinder, as a motoring pressure, calculates a hysteresis amount indicative of a difference between the detected in-cylinder pressure and an actual in-cylinder pressure, based on the detected in-cylinder pressure and the motoring pressure obtained during the exhaust stroke of the engine, and corrects the detected in-cylinder pressure based on the calculated hysteresis amount.

Abstract translation: 一种用于内燃机的缸内压力检测装置，其能够适当地计算滞后量，从而以高精度检测缸内压力。 缸内压力检测装置包括缸内压力传感器，其将缸内压力检测为检测到的缸内压力。 缸内压力检测装置估计在气缸中不进行燃烧时产生的缸内压力作为运转压力，计算表示检测到的缸内压力和实际缸内压力之间的差的滞后量 基于检测到的缸内压力和在发动机的排气冲程期间获得的驾驶压力，并且基于计算出的滞后量来校正检测到的缸内压力。

公开(公告)号：US20090055074A1

公开(公告)日：2009-02-26

申请号：US12222782

申请日：2008-08-15

Applicant: Tetsuya Ishiguro ,  Shusuke Akazaki ,  Yuji Yamamoto

Inventor： Tetsuya Ishiguro ,  Shusuke Akazaki ,  Yuji Yamamoto

IPC: F02D45/00

CPC classification number: F02D35/024 ,  F02D35/023 ,  F02D35/028 ,  F02D41/2416 ,  F02D41/34 ,  F02P5/00 ,  F02P7/06

Abstract: A control for determining a firing timing of an engine is provided. An in-cylinder pressure is detected at a predetermined time interval. An in-cylinder pressure for every predetermined crank angle is calculated based on the detected in-cylinder pressure. A motoring pressure in a case where combustion is not performed in the engine is estimated. It is detected that a pressure difference between the calculated in-cylinder pressure and the motoring pressure has exceeded a determination value. A time point is identified, as a firing timing, at which the pressure difference has exceeded a determination value with a finer resolution than the resolution of the predetermined crank angle interval through an interpolation calculation. The interpolation calculation uses a first crank angle when it is detected that the pressure difference has exceeded the determination value, the pressure difference corresponding to the first crank angle, a second crank angle previous to the first crank angle by the predetermined crank angle and a pressure difference corresponding to the second crank angle.

Abstract translation: 提供了一种用于确定发动机的点火正时的控制。 以预定的时间间隔检测缸内压力。 基于检测到的缸内压力计算每个预定曲柄角的缸内压力。 估计在发动机不进行燃烧的情况下的驾驶压力。 检测出计算出的缸内压力和驾驶压力之间的压力差超过了确定值。 通过内插计算，将时间点识别为具有比通过预定的曲柄角间隔的分辨率更精细的分辨率的压力差超过确定值的点火时刻。 当检测到压力差已经超过确定值，对应于第一曲柄角的压力差，第一曲柄角之前的预定曲柄角的第二曲柄角和压力时，插值计算使用第一曲柄角 差异对应于第二曲柄角度。

公开(公告)号：US20080059044A1

公开(公告)日：2008-03-06

申请号：US11896066

申请日：2007-08-29

Applicant: Takahide Mizuno ,  Shusuke Akazaki ,  Hiroyuki Sugiura ,  Mitsuo Hashizume

Inventor： Takahide Mizuno ,  Shusuke Akazaki ,  Hiroyuki Sugiura ,  Mitsuo Hashizume

IPC: F02D28/00

CPC classification number: G01M15/11 ,  G01L23/221 ,  G01L27/007 ,  G01M15/08

Abstract: An in-cylinder pressure detection device for an internal combustion engine, which is capable of detecting an in-cylinder pressure accurately without being adversely affected by changes in the atmospheric pressure even when the atmospheric pressure changes. An in-cylinder pressure sensor detects pressure within a cylinder as a detected in-cylinder pressure. An ECU estimates pressure generated in the cylinder during a non-combustion period as a motoring pressure. An atmospheric pressure sensor detects an atmospheric pressure (PA). The ECU corrects the motoring pressure according to the atmospheric pressure and identifies correction parameters such that the difference between the detected in-cylinder pressure detected during a compression stroke of the engine and the corrected motoring pressure becomes minimum, and corrects the detected in-cylinder pressure by the identified correction parameters, to thereby calculate an in-cylinder pressure.

Abstract translation: 一种用于内燃机的缸内压力检测装置，其能够即使在大气压变化时也能够正确地检测缸内压力而不受大气压力的变化的不利影响。 缸内压力传感器检测气缸内的压力作为检测到的缸内压力。 ECU估计在非燃烧期间在气缸中产生的压力作为驱动压力。 大气压传感器检测大气压（PA）。 ECU根据大气压力校正驾驶压力，并识别校正参数，使得在发动机的压缩冲程期间检测到的检测到的缸内压力与校正的驾驶压力之间的差变为最小，并校正检测到的缸内压力 通过所识别的校正参数，从而计算缸内压力。

公开(公告)号：US20070277780A1

公开(公告)日：2007-12-06

申请号：US11806447

申请日：2007-05-31

Applicant: Shusuke Akazaki ,  Mitsuo Hashizume ,  Takahide Mizuno ,  Yuji Yamamoto

Inventor： Shusuke Akazaki ,  Mitsuo Hashizume ,  Takahide Mizuno ,  Yuji Yamamoto

IPC: F02P5/00 ,  G06F19/00

CPC classification number: F02P5/1522 ,  F02D35/023 ,  F02D35/027 ,  F02D35/028 ,  F02P5/153 ,  G01L23/221 ,  Y02T10/46

Abstract: An ignition timing control apparatus and method for an internal combustion engine, and an engine control unit are provided for more rapidly and effectively restraining knocking as the entire internal combustion engine, and extending the lifetime of the internal combustion engine. The ignition timing control apparatus comprising an ECU. The ECU determines a basic ignition timing on a cylinder-by-cylinder basis, calculates a knock intensity on a cylinder-by-cylinder bases based on a detected signal of a cylinder inner pressure sensor, and updates a correction coefficient learning value for a corresponding cylinder when the knock intensity is larger than a predetermined first determination value and is smaller than a predetermined second determination value larger than the predetermined first determination value, and updates the knock intensities for all the cylinders when the one knock intensity parameter is equal to or larger than the predetermined second determination value. Then, the ECU calculates a knock correction term on a cylinder-by-cylinder basis in accordance with the correction coefficient learning value, and corrects the basic ignition timing with the knock correction term, thereby determining an ignition timing on a cylinder-by-cylinder basis.

Abstract translation: 提供一种用于内燃机和发动机控制单元的点火正时控制装置和方法，用于更快速有效地限制作为整个内燃机的爆震，并延长内燃机的使用寿命。 点火正时控制装置包括ECU。 ECU根据汽缸内压传感器的检测信号，确定基于缸缸的基本点火正时，并根据汽缸内压传感器的检测信号，计算出汽缸底座上的爆震强度，并更新相应的校正系数学习值 当所述爆震强度大于预定的第一确定值并且小于大于所述预定的第一确定值的预定的第二确定值时，当所述一个爆震强度参数等于或更大时，更新所有气缸的爆震强度 比预定的第二确定值。 然后，ECU根据校正系数学习值，逐缸地计算敲击校正项，并用敲击校正项校正基本点火正时，由此确定圆柱滚子上的点火正时 基础。

公开(公告)号：US20070261482A1

公开(公告)日：2007-11-15

申请号：US11798030

申请日：2007-05-09

Applicant: Takahide Mizuno ,  Shusuke Akazaki ,  Hiroyuki Sugiura ,  Yuji Yamamoto ,  Mitsuo Hashizume ,  Kentaro Onuma

Inventor： Takahide Mizuno ,  Shusuke Akazaki ,  Hiroyuki Sugiura ,  Yuji Yamamoto ,  Mitsuo Hashizume ,  Kentaro Onuma

IPC: G01M15/00

CPC classification number: F02D41/2474 ,  F02D35/023 ,  F02D41/1448 ,  F02D41/2441 ,  F02D2041/1433 ,  G01M15/08

Abstract: An in-cylinder pressure detection device for an internal combustion engine, which is capable of calculating a hysteresis amount properly to thereby detect in-cylinder pressure with high accuracy. The in-cylinder pressure detection device comprises an in-cylinder pressure sensor that detects in-cylinder pressure as a detected in-cylinder pressure. The in-cylinder pressure detection device estimates an in-cylinder pressure generated when combustion is not performed in the cylinder, as a motoring pressure, calculates a hysteresis amount indicative of a difference between the detected in-cylinder pressure and an actual in-cylinder pressure, based on the detected in-cylinder pressure and the motoring pressure obtained during the exhaust stroke of the engine, and corrects the detected in-cylinder pressure based on the calculated hysteresis amount.

Abstract translation: 一种用于内燃机的缸内压力检测装置，其能够适当地计算滞后量，从而以高精度检测缸内压力。 缸内压力检测装置包括缸内压力传感器，其将缸内压力检测为检测到的缸内压力。 缸内压力检测装置估计在气缸中不进行燃烧时产生的缸内压力作为运转压力，计算表示检测到的缸内压力和实际缸内压力之间的差的滞后量 基于检测到的缸内压力和在发动机的排气冲程期间获得的驾驶压力，并且基于计算出的滞后量来校正检测到的缸内压力。