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1. 发明授权

US06712053B2 Control system for internal combustion engine 有权
标题翻译：内燃机控制系统
公开(公告)号：US06712053B2
公开(公告)日：2004-03-30
申请号：US10229284
申请日：2002-08-28
申请人： Kazuo Kobayashi , Hiroshi Haraguchi , Toshio Kondo , Sumiko Kohira
发明人： Kazuo Kobayashi , Hiroshi Haraguchi , Toshio Kondo , Sumiko Kohira
IPC分类号： F02D4100
CPC分类号： F02D41/0052 , F02D23/02 , F02D41/0072 , F02D41/1458 , F02D2200/0402 , F02M26/05 , F02M26/10 , Y02T10/144 , Y02T10/47
摘要： An O2 amount in the intake air is determined based on a fresh air and an EGR gas. A consumed O2 amount is determined with a command injection amount Qr. Then, the consumed O2 amount is subtracted from the O2 amount in the intake air to obtain an exhaust O2 amount. An exhaust O2 concentration is estimated based on the exhaust O2 amount. According to the invention, the system is not affected by a delay for the exhaust gas to reach an O2 sensor and a delay of the chemical reaction in the O2 sensor. Therefore, the exhaust O2 concentration can be highly precisely estimated compare to the case in which the exhaust O2 concentration is detected by the O2 sensor.
摘要翻译：基于新鲜空气和EGR气体来确定进气中的O2量。用指令喷射量Qr确定消耗的O2量。然后，从进气中的O 2量中减去消耗的O 2量，以获得排气O 2量。基于排气O 2量估计排气O 2浓度。根据本发明，该系统不受排气到达O2传感器的延迟和O2传感器中的化学反应的延迟的影响。因此，与O2传感器检测到排气O2浓度的情况相比，可以高精度地估计排气O 2浓度。

2. 发明授权

US07117082B2 Controller for internal combustion engine 有权
标题翻译：内燃机控制器
公开(公告)号：US07117082B2
公开(公告)日：2006-10-03
申请号：US11133357
申请日：2005-05-20
申请人： Sumiko Kohira , Hiroshi Haraguchi
发明人： Sumiko Kohira , Hiroshi Haraguchi
IPC分类号： G01M15/05
CPC分类号： F02D41/009 , F02D35/023 , F02D35/028 , F02D41/2419
摘要： An ECU converts a cylinder pressure P and a cylinder volume V corresponding to a crank angle θ at least from a compression stroke to a combustion and expansion stroke to a logarithmic value log P and a logarithmic value log V, respectively, to find a logarithmic conversion waveform and estimates a motoring waveform which is obtained by subtracting a pressure rise developed by combustion in a cylinder from the logarithmic conversion waveform, that is, corresponds to a non-combustion state. Further, the ECU computes a determination line Y of an ignition timing Tburn on the basis of the base line X of the estimated motoring waveform and determines the ignition timing Tburn on the basis of this determination line Y and the logarithmic conversion waveform.
摘要翻译： ECU将至少从压缩冲程到燃烧和膨胀冲程的曲柄角θ对应的气缸压力P和气缸体积V分别转换为对数值log P和对数值log V，以找到对数转换并且估计通过从对数转换波形中减去由气缸中的燃烧产生的压力上升而获得的电动波形，即对应于非燃烧状态。此外，ECU基于估计的电动波形的基线X计算点火正时Tburn的确定线Y，并且基于该确定线Y和对数转换波形来确定点火正时Tburn。

3. 发明申请

US20050274358A1 Controller for internal combustion engine 有权
标题翻译：内燃机控制器
公开(公告)号：US20050274358A1
公开(公告)日：2005-12-15
申请号：US11133357
申请日：2005-05-20
申请人： Sumiko Kohira , Hiroshi Haraguchi
发明人： Sumiko Kohira , Hiroshi Haraguchi
IPC分类号： F02D45/00 , F02D41/34 , F02D41/40 , F02P5/00 , F02P17/00
CPC分类号： F02D41/009 , F02D35/023 , F02D35/028 , F02D41/2419
摘要： An ECU converts a cylinder pressure P and a cylinder volume V corresponding to a crank angle θ at least from a compression stroke to a combustion and expansion stroke to a logarithmic value log P and a logarithmic value log V, respectively, to find a logarithmic conversion waveform and estimates a motoring waveform which is obtained by subtracting a pressure rise developed by combustion in a cylinder from the logarithmic conversion waveform, that is, corresponds to a non-combustion state. Further, the ECU computes a determination line Y of an ignition timing Tburn on the basis of the base line X of the estimated motoring waveform and determines the ignition timing Tburn on the basis of this determination line Y and the logarithmic conversion waveform.
摘要翻译： ECU将至少从压缩冲程到燃烧和膨胀冲程的曲柄角θ对应的气缸压力P和气缸体积V分别转换为对数值log P和对数值log V，以找到对数转换并且估计通过从对数转换波形中减去由气缸中的燃烧产生的压力上升而获得的电动波形，即对应于非燃烧状态。此外，ECU基于估计的电动波形的基线X计算点火正时Tburn的确定线Y，并且基于该确定线Y和对数转换波形来确定点火正时Tburn。

4. 发明授权

US5154053A Air-fuel ratio control apparatus for engine 失效
标题翻译：发动机空燃比控制装置
公开(公告)号：US5154053A
公开(公告)日：1992-10-13
申请号：US690825
申请日：1991-04-26
申请人： Kazumi Ishida , Hiroshi Haraguchi , Toshio Kondo
发明人： Kazumi Ishida , Hiroshi Haraguchi , Toshio Kondo
IPC分类号： F02B1/04 , F02D19/02 , F02D41/14 , F02M21/02
CPC分类号： F02D41/1441 , F01N2240/20 , F02B1/04
摘要： An air-fuel ratio control apparatus in which an air-fuel ratio of a mixture gas supplied to an engine, especially, a gas engine, is controlled in accordance with an output signal of each of oxygen concentration sensors disposed in upper and lower streams of an exhaust gas catalyzer of the engine. The output signal of the oxygen concentration sensor disposed on the upper stream side of the catalyzer is provided as one input signal of an air-fuel ratio control unit and the output signal of the oxygen concentration sensor disposed on the lower stream side of the catalyzer is provided as an input signal of an output signal correction amount determination unit, respectively. A mixing member for mixing an exhaust gas is disposed in an upper stream of each oxygen concentration sensor to detect the concentration of oxygen in the exhaust gas which is well mixed. The air-fuel ratio control unit controls an air-fuel ratio of a mixture gas in accordance with the output signal of the oxygen concentration sensor disposed on the upper stream side of the catalyzer and an output signal correction amount which is an output signal of the output signal correction amount determination unit. Since the exhaust gas is sufficiently mixed by the mixing member, variations of a measured value caused by the attachment position of each oxygen concentration sensor ar eliminated, thereby making it possible to control the air-fuel ratio of the mixture gas to a value close to a theoretical air-fuel ratio with a satisfactory precision.
摘要翻译：一种空燃比控制装置，其中，根据设置在上游和下游的各个氧浓度传感器的输出信号来控制供应到发动机，特别是燃气发动机的混合气体的空燃比发动机的废气催化器。设置在催化剂的上游侧的氧浓度传感器的输出信号被设置为空燃比控制单元的一个输入信号，并且设置在催化器的下游侧的氧浓度传感器的输出信号为分别作为输出信号校正量确定单元的输入信号提供。在每个氧浓度传感器的上游设置有用于混合排气的混合部件，以检测排出气体中的氧气的浓度。空燃比控制单元根据设置在催化剂的上游侧的氧浓度传感器的输出信号和作为输出信号的输出信号的输出信号校正量来控制混合气体的空燃比输出信号校正量确定单元。由于废气通过混合部件充分混合，消除了由每个氧浓度传感器ar的安装位置引起的测量值的变化，从而可以将混合气体的空燃比控制在接近于理论空燃比具有令人满意的精度。

5. 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。

6. 发明授权

US5251438A Air-fuel ratio control apparatus for engine 失效
标题翻译：发动机空燃比控制装置
公开(公告)号：US5251438A
公开(公告)日：1993-10-12
申请号：US916268
申请日：1992-07-21
申请人： Kazumi Ishida , Hiroshi Haraguchi , Toshio Kondo
发明人： Kazumi Ishida , Hiroshi Haraguchi , Toshio Kondo
IPC分类号： F02B1/04 , F02D41/14 , F01N3/20
CPC分类号： F02D41/1441 , F01N2240/20 , F02B1/04
摘要： An air-fuel ratio feedback control apparatus for a gas engine. A mixer mixes intake air and a fuel gas. A subsidiary supply path supplies at least one of the intake air and the fuel gas downstream of the mixer. Oxygen concentration sensors detect a concentration of oxygen in an exhaust gas; and operation condition detectors detect operating conditions of the gas engine. A basic amount setting unit sets a basic amount of at least one of the intake air and the fuel gas supplied through the subsidiary supply path. A correction amount setting unit sets a correction amount proportional to a total fuel gas supply rate, and a control amount setting unit for setting a control amount of at least one of the intake air and the fuel gas supplied through the subsidiary supply path by adding the basic amount and the correction amount together, whereby the air-fuel ratio of the gas engine can be controlled at a desired value even when a bypass supply ratio of the fuel gas varies.
摘要翻译：一种用于燃气发动机的空燃比反馈控制装置。混合器混合进气和燃气。辅助供应路径在混合器下游供应进气和燃料气体中的至少一个。氧浓度传感器检测废气中的氧浓度; 并且操作条件检测器检测燃气发动机的运行状况。基本量设定单元设定通过辅助供给路径供给的吸入空气和燃料气体中的至少一个的基本量。校正量设定单元设定与总燃料气体供给量成比例的校正量，以及控制量设定单元，用于设定通过辅助供给路径供给的吸入空气和燃料气体中的至少一个的控制量，基本量和校正量，由此即使当燃料气体的旁路供应比变化时，也可以将气体发动机的空燃比控制在期望值。

7. 发明授权

US5090199A Apparatus for controlling air-fuel ratio for engine 失效
标题翻译：用于控制发动机的空气燃料比的装置
公开(公告)号：US5090199A
公开(公告)日：1992-02-25
申请号：US626829
申请日：1990-12-13
申请人： Kenji Ikuta , Toshio Kondo , Hiroshi Haraguchi
发明人： Kenji Ikuta , Toshio Kondo , Hiroshi Haraguchi
IPC分类号： F02D41/04 , F02D41/14
CPC分类号： F02D41/1401 , F02D41/1441 , F02D41/1479 , F02D2041/1409 , F02D2041/1415 , F02D2041/1418 , F02D2041/1433 , F02D41/1456
摘要： An air-fuel ratio control apparatus for an engine for controlling a fuel injection amount so that an air-fuel ratio of a mixture gas which is supplied to the engine is set to a stoichiometric air-fuel ratio is disclosed. The apparatus has a first oxygen concentration sensor on the upstream side of a catalyst arranged in an exhaust pipe of the engine and a second oxygen concentration sensor on the downstream side, respectively. The first sensor gives to the apparatus a first linear detection signal for the air-fuel ratio of the mixture gas. The second sensor gives to the apparatus a second detection signal indicating whether the air-fuel ratio of the mixture gas is rich or lean for the stoichiometric air-fuel ratio. A target air-fuel ratio is set in accordance with the second detection signal and the first detection signal and the target air-fuel ratio are compared, thereby controlling a fuel injection amount. Thus, a deviation between the actual air-fuel ratio and the first detection signal can be accurately corrected and the air-fuel ratio can be accurately controlled to a value in a region where a high purification factor of the catalyst is derived.
摘要翻译：公开了一种用于控制燃料喷射量的发动机的空燃比控制装置，使得供给发动机的混合气体的空燃比被设定为理论空燃比。该装置在布置在发动机的排气管中的催化剂的上游侧具有第一氧浓度传感器，在下游侧具有第二氧浓度传感器。第一传感器向装置提供混合气体的空燃比的第一线性检测信号。第二传感器给予装置第二检测信号，其指示混合气体的空燃比对于化学计量空燃比是富还是贫。根据第二检测信号设定目标空燃比，并比较第一检测信号和目标空燃比，由此控制燃料喷射量。因此，可以精确地校正实际空燃比与第一检测信号之间的偏差，并且可以将空燃比精确地控制为导致催化剂的净化系数高的区域的值。

8. 发明授权

US5003955A Method of controlling air-fuel ratio 失效
标题翻译：控制空燃比的方法
公开(公告)号：US5003955A
公开(公告)日：1991-04-02
申请号：US463438
申请日：1990-01-11
申请人： Hiroshi Haraguchi , Hiroshi Tamura , Katuhiko Kodama , Toshio Kondo
发明人： Hiroshi Haraguchi , Hiroshi Tamura , Katuhiko Kodama , Toshio Kondo
IPC分类号： F02B75/02 , F02D41/14 , F02D41/24
CPC分类号： F02D41/2445 , F02D41/2454 , F02D41/248 , F02B2075/027
摘要： A method of controlling the air fuel ratio in internal combustion, engines, comprising the steps of: updating first learning terms at a first learning speed in response to a signal from the air-fuel-ratio sensor and respectively storing them in a reloadable memory device, the first learning terms being provided for respective different ranges corresponding to different engine temperature and related to factors causing variation in air-fuel ratio in such a manner that the air-fuel-ratio variate of the variation varies depending upon the engine temperature; updating second learning terms at a second learning speed which is higher than the first learning speed in response to a signal from the air-fuel-ratio sensor and storing them in the reloadable memory device, the second learning terms being related to factors causing variation in air-fuel ratio in such a manner that the air-fuel-ratio variate of the variation varies in a substantially uniform manner with respect to the engine temperature; and determining the transient learning value on the basis of the first learning terms dependent on the engine temperature and stored in the memory device and of the second learning terms stored in the memory device, and correcting the transient correction value in accordance with the transient learning value thus determined.

9. 发明申请

US20050198945A1 Exhaust gas purification system of internal combustion engine 失效
标题翻译：内燃机废气净化系统
公开(公告)号：US20050198945A1
公开(公告)日：2005-09-15
申请号：US11077205
申请日：2005-03-11
申请人： Shinichiro Okugawa , Kazuo Kobayashi , Hiroshi Haraguchi
发明人： Shinichiro Okugawa , Kazuo Kobayashi , Hiroshi Haraguchi
IPC分类号： F02M25/07 , B01D46/42 , B01D53/94 , F01N3/02 , F01N3/023 , F01N3/025 , F01N3/035 , F01N3/08 , F01N9/00 , F01N11/00 , F02D9/02 , F02D21/08 , F02D41/02 , F02D41/04 , F02D41/38 , F02D45/00 , F01N3/00
CPC分类号： F02D41/029 , F01N2250/02 , F01N2250/06 , F01N2260/04 , F01N2430/06 , F02D41/0055 , F02D2041/0017
摘要： An oxidation catalyst is disposed upstream of a diesel particulate filter (DPF) in an exhaust passage of a diesel engine. An electronic control unit (ECU) operates temperature increasing means to combust and eliminate particulate matters deposited on the DPF. The ECU determines execution and stoppage of regeneration of the DPF based on a quantity of the particulate matters deposited on the DPF. The ECU increases an exhaust gas recirculation quantity (EGR quantity) during the regeneration to reduce an intake air quantity from the intake air quantity in a non-regeneration period and to achieve a flow rate of the exhaust gas passing through the DPF suitable for the temperature increase. The ECU corrects a valve opening degree of an EGR control valve based on the sensed intake air quantity to reduce a variation in the exhaust gas flow rate.
摘要翻译：氧化催化剂设置在柴油发动机的排气通道中的柴油机微粒过滤器（DPF）的上游。电子控制单元（ECU）操作升温装置来燃烧和消除沉积在DPF上的颗粒物质。 ECU根据沉积在DPF上的颗粒物质的量来确定DPF再生的执行和停止。 ECU在再生期间增加废气再循环量（EGR量），以在非再生时段内从进气量减少进气量，并且实现通过适合于温度的DPF的排气的流量增加。 ECU根据检测到的进气量来校正EGR控制阀的阀开度，以减少废气流量的变化。

10. 发明授权

US07313913B2 Exhaust gas purification system of internal combustion engine 失效
标题翻译：内燃机废气净化系统
公开(公告)号：US07313913B2
公开(公告)日：2008-01-01
申请号：US11077205
申请日：2005-03-11
申请人： Shinichiro Okugawa , Kazuo Kobayashi , Hiroshi Haraguchi
发明人： Shinichiro Okugawa , Kazuo Kobayashi , Hiroshi Haraguchi
IPC分类号： F01N3/00
CPC分类号： F02D41/029 , F01N2250/02 , F01N2250/06 , F01N2260/04 , F01N2430/06 , F02D41/0055 , F02D2041/0017
摘要： An oxidation catalyst is disposed upstream of a diesel particulate filter (DPF) in an exhaust passage of a diesel engine. An electronic control unit (ECU) operates temperature increasing circuit to combust and eliminate particulate matters deposited on the DPF. The ECU determines execution and stoppage of regeneration of the DPF based on a quantity of the particulate matters deposited on the DPF. The ECU increases an exhaust gas recirculation quantity (EGR quantity) during the regeneration to reduce an intake air quantity from the intake air quantity in a non-regeneration period and to achieve a flow rate of the exhaust gas passing through the DPF suitable for the temperature increase. The ECU corrects a valve opening degree of an EGR control valve based on the sensed intake air quantity to reduce a variation in the exhaust gas flow rate.
摘要翻译：氧化催化剂设置在柴油发动机的排气通道中的柴油机微粒过滤器（DPF）的上游。电子控制单元（ECU）操作升温电路来燃烧和消除沉积在DPF上的颗粒物质。 ECU根据沉积在DPF上的颗粒物质的量来确定DPF再生的执行和停止。 ECU在再生期间增加废气再循环量（EGR量），以在非再生时段内从进气量减少进气量，并且实现通过适合于温度的DPF的排气的流量增加。 ECU根据检测到的进气量来校正EGR控制阀的阀开度，以减少废气流量的变化。

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