公开(公告)号：US4964271A

公开(公告)日：1990-10-23

申请号：US163871

申请日：1988-03-03

申请人： Hiroshi Sawada ,  Tatehito Ueda ,  Kiyoshi Nakanishi ,  Takayuki Demura

发明人： Hiroshi Sawada ,  Tatehito Ueda ,  Kiyoshi Nakanishi ,  Takayuki Demura

IPC分类号： F02D41/14

CPC分类号： F02D41/1441 ,  F02D41/123 ,  F02D41/1481 ,  F02D41/1488 ,  F02D2041/1418 ,  F02D2200/021 ,  F02D41/08 ,  F02D41/1454

摘要： In an air-fuel ratio feedback control system including at least one air-fuel ratio sensor downstream of a catalyst converter provided in an exhaust gas passage, an actual air-fuel ratio is controlled in accordance with the output of the downstream-side air-fuel ratio sensor. When at least one of the air-fuel ratio feedback control conditions for the downstream-side air-fuel ratio sensor is not satisfied the controlled air-fuel ratio is made an air-fuel ratio by an open loop control, while all the air-fuel ratio feedback control conditions for the downstream-side air-fuel ration sensor are satisfied the controlled air-fuel ratio is made the stoichiometric ratio (.lambda.=1) in accordance with the output of the downstream-side air-fuel ratio sensor. For a period after all the air-fuel ratio feedback control conditions for the downstream-side air-fuel ratio sensor are satisfied, the control by the output of the downstream-side air-fuel ratio sensor is prohibited, but, the controlled air-fuel ratio is made the stoichiometric ratio (.lambda.=1) by an open loop control or by the output of an upstream-side air-fuel ratio sensor.

摘要翻译： 在设置在废气通道中的催化剂转化器的下游的至少一个空燃比传感器的空燃比反馈控制系统中，根据下游侧空气燃料比的输出控制实际的空燃比， 燃油比传感器 当下游侧空燃比传感器的空燃比反馈控制条件中的至少一个不满足时，通过开环控制使受控空燃比成为空燃比， 满足下游侧空燃比传感器的燃料比反馈控制条件，根据下游侧空燃比传感器的输出，使受控空燃比成为化学计量比（λ= 1）。 在满足下游侧空燃比传感器的空燃比反馈控制条件的期间之后，禁止下游侧空燃比传感器的输出进行的控制， 通过开环控制或上游侧空燃比传感器的输出，使燃料比成为化学计量比（λ= 1）。

公开(公告)号：US5022225A

公开(公告)日：1991-06-11

申请号：US497703

申请日：1990-03-23

申请人： Hiroshi Sawada ,  Tatehito Ueda ,  Kiyoshi Nakanishi ,  Takayuki Demura

发明人： Hiroshi Sawada ,  Tatehito Ueda ,  Kiyoshi Nakanishi ,  Takayuki Demura

IPC分类号： F02D41/14

CPC分类号： F02D41/1441 ,  F02D41/123 ,  F02D41/1481 ,  F02D41/1488 ,  F02D2041/1418 ,  F02D2200/021 ,  F02D41/08 ,  F02D41/1454

摘要： In an air-fuel ratio feedback control system including at least one air-fuel ratio sensor downstream of a catalyst converter provided in an exhaust gas passage, an actual air-fuel ratio is controlled in accordance with the output of the downstream-side air-fuel ratio sensor. When at least one of the air-fuel ratio feedback control conditions for the downstream-side air-fuel ratio sensor is not satisfied the controlled air-fuel ratio is made an air-fuel ratio by an open loop control, while all the air-fuel ratio feedback control conditions for the downstream-side air-fuel ratio sensor are satisfied the controlled air-fuel ratio is made the stoichometric ratio (.lambda.=1) in accordance with the output of the downstream-side air-fuel ratio sensor. For a period after all the air-fuel ratio feedback control conditions for the downstream-side air-fuel ratio sensor are satisfied, the control by the output of the downstream-side air-fuel ratio sensor is prohibited, but, the controlled air-fuel ratio is made the stoichiometric ratio (.lambda.=1) by an open loop control or by the output of an upstream-side air-fuel ratio sensor.

公开(公告)号：US4364227A

公开(公告)日：1982-12-21

申请号：US248282

申请日：1981-03-27

申请人： Seietsu Yoshida ,  Yukihide Niimi ,  Massao Ito ,  Hiroshi Sawada ,  Takayuki Demura

发明人： Seietsu Yoshida ,  Yukihide Niimi ,  Massao Ito ,  Hiroshi Sawada ,  Takayuki Demura

IPC分类号： F02D41/14 ,  F01N3/22 ,  F02M7/24

CPC分类号： F02D41/1479

摘要： The output of an exhaust gas sensor disposed in the exhaust system of an engine is amplified by a variable gain amplifier circuit. The gain of the amplifier circuit is controlled so that the peak output voltage thereof is kept constant irrespective of changes in the output of the exhaust gas sensor due to, for example, its deterioration. The output of the exhaust gas sensor is integrated and compared with a reference value by a comparator circuit which generates a reference voltage variable with the output waveform of the exhaust gas sensor whereby a stable feedback control is realized even though the air-fuel ratio of the mixture produced from a carburetor is greatly changed.

摘要翻译： 设置在发动机的排气系统中的排气传感器的输出由可变增益放大器电路放大。 控制放大器电路的增益，使得其的峰值输出电压保持恒定，而与由于例如其劣化导致的排气传感器的输出的变化无关。 排气传感器的输出被积分，并且通过比较器电路与参考电压进行比较，该比较器电路利用排气传感器的输出波形产生参考电压变化，由此即使实现了空燃比的空燃比，也实现了稳定的反馈控制 从化油器生产的混合物大大改变。

公开(公告)号：US4391256A

公开(公告)日：1983-07-05

申请号：US406574

申请日：1982-08-09

申请人： Hiroshi Sawada ,  Takayuki Demura

发明人： Hiroshi Sawada ,  Takayuki Demura

IPC分类号： F01N3/22 ,  F02D41/14 ,  F02B3/08

CPC分类号： F02D41/1479

摘要： An average air-fuel ratio detection circuit for generating a signal which indicates the average value of a detection signal from an air-fuel ratio sensor, and a reference value control circuit are provided in the air-fuel ratio control apparatus. The reference value control circuit controls the reference value of a comparison circuit which compares the value of the detection signal from the air-fuel ratio sensor with the reference value, in accordance with the generated signal from the average air-fuel ratio detection circuit.

摘要翻译： 在空燃比控制装置中设置有用于产生表示来自空燃比传感器的检测信号的平均值的信号的平均空燃比检测电路和基准值控制电路。 参考值控制电路根据来自平均空燃比检测电路的产生信号，控制将来自空燃比传感器的检测信号的值与基准值进行比较的比较电路的基准值。

公开(公告)号：US09850874B2

公开(公告)日：2017-12-26

申请号：US14386385

申请日：2012-03-21

申请人： Takayuki Demura ,  Syuuji Yuda ,  Yasuhiro Ooi

发明人： Takayuki Demura ,  Syuuji Yuda ,  Yasuhiro Ooi

IPC分类号： F02P5/04 ,  F02D41/00 ,  F02P5/15 ,  F02P5/152 ,  F02D41/22 ,  F02D41/34 ,  F02D35/02

CPC分类号： F02P5/045 ,  F02D35/023 ,  F02D41/0007 ,  F02D41/008 ,  F02D41/0087 ,  F02D41/22 ,  F02D41/34 ,  F02P5/1512 ,  F02P5/1516 ,  F02P5/1528 ,  Y02T10/144 ,  Y02T10/46

摘要： A controller of an engine with a supercharger includes, for each of cylinders, fuel supply system and an ignition plug. The controller includes an electronic control unit that is configured to: (i) set a basic ignition timing depending on an operation state of the engine, (ii) detect, for each cycle, an abnormal combustion generation cylinder in which an abnormal combustion is generated in a supercharged region, (iii) execute a fuel cut to stop a fuel supply by the fuel supply system for the abnormal combustion generation cylinder, (iv) change an ignition timing of the abnormal combustion generation cylinder to expand a crank angle width between a compression top dead center and the basic ignition timing for several cycles after start of the fuel cut, and (v) execute an ignition cut that prohibits a spark from being generated by the ignition plug, further after elapse of the several cycles is executed.

公开(公告)号：US08468999B2

公开(公告)日：2013-06-25

申请号：US12677842

申请日：2009-01-08

申请人： Takayuki Demura

发明人： Takayuki Demura

IPC分类号： F02M51/00 ,  F02B3/00

CPC分类号： F02D41/402 ,  F02D41/0097 ,  F02D41/047 ,  F02D41/107 ,  F02D41/1498 ,  F02D41/365 ,  F02D2200/1012 ,  Y02T10/44

摘要： A fuel injection control system of an internal combustion engine includes a required injection setting mechanism, a rapid rotational speed change detector, and an injection controller. The required injection setting mechanism calculates a required number of injections and required injection times with regard to a plurality of fuel injections, based on operating conditions of the engine. The rapid rotational speed change detector determines whether the amount of change of the engine speed is equal to or larger than a predetermined value. When it is determined that the amount of change of the engine speed is equal to or larger than the predetermined value, the injection controller controls a fuel injection valve so as to reduce or eliminate differences between the actual injection times and the required injection times. Thereby, even when the engine speed changes rapidly, deteriorations in the driveability and exhaust emissions are prevented.

摘要翻译： 内燃机的燃料喷射控制系统包括所需的喷射设定机构，快速转速变化检测器和喷射控制器。 基于发动机的操作条件，所需的注射设定机构计算关于多次燃料喷射的所需喷射次数和所需的喷射时间。 快速转速变化检测器确定发动机转速的变化量是否等于或大于预定值。 当确定发动机转速的变化量等于或大于预定值时，喷射控制器控制燃料喷射阀，以便减少或消除实际喷射时间和所需喷射时间之间的差异。 因此，即使当发动机转速快速变化时，也可以防止行驶性和废气排放的恶化。

公开(公告)号：US20060231066A1

公开(公告)日：2006-10-19

申请号：US11366744

申请日：2006-03-03

申请人： Takayuki Demura ,  Koji Morita ,  Kenji Harima ,  Kei Masuda ,  Tetsuji Nagata

发明人： Takayuki Demura ,  Koji Morita ,  Kenji Harima ,  Kei Masuda ,  Tetsuji Nagata

IPC分类号： F02M7/00 ,  F02B5/00

CPC分类号： F02D41/064 ,  F02D35/023 ,  F02D35/025 ,  F02D41/3836 ,  F02D2200/0602

摘要： A control apparatus of an internal combustion engine includes a fuel pressure sensor to detect the pressure of the fuel supplied from a fuel pump to an injector; an in-cylinder pressure sensor, which serves as a combustion chamber temperature detecting unit that detects the temperature in the combustion chamber or the parameter depending on the temperature, to detect in-cylinder pressure (combustion chamber pressure); and an ECU that controls to execute the first fuel injection of each cylinder by the injector when the fuel pressure detected by the fuel pressure sensor is not less than a predetermined threshold fuel pressure and when the in-cylinder pressure detected by the in-cylinder pressure sensor is not less than a threshold in-cylinder pressure.

摘要翻译： 内燃机的控制装置包括：燃料压力传感器，用于检测从燃料泵供给到喷射器的燃料的压力; 缸内压力传感器，其用作检测燃烧室中的温度或根据温度的参数的燃烧室温度检测单元，以检测缸内压力（燃烧室压力）; 以及ECU，其当燃料压力传感器检测到的燃料压力不小于预定阈值燃料压力时，并且当由缸内压力检测到的缸内压力时，控制所述喷射器执行每个气缸的第一次燃料喷射 传感器不低于缸内压力的阈值。

公开(公告)号：US4811557A

公开(公告)日：1989-03-14

申请号：US105707

申请日：1987-10-08

申请人： Atsuo Okumura ,  Takayuki Demura

发明人： Atsuo Okumura ,  Takayuki Demura

IPC分类号： F02D41/00 ,  F02D41/14

CPC分类号： F02D41/1441

摘要： In a double air-fuel sensor system including two air-fuel ratio sensors upstream and downstream of a catalyst converter provided in an exhaust gas passage, an air-fuel ratio correction amount is calculated in accordance with the outputs of the upstream-side and downstream-side air-fuel ratio sensors, thereby obtaining an actual air-fuel ratio. The speed of renewal of the air-fuel ratio correction amount is higher when output of the downstream-side air-fuel ratio sensor indicates a lean state than when the output of the downstream-side air-fuel ratio sensor indicates a rich state.

摘要翻译： 在设置在废气通道中的催化剂转化器的上游和下游的两个空燃比传感器系统中，根据上游侧和下游的输出，计算空燃比校正量 侧空燃比传感器，从而获得实际的空燃比。 下游侧空燃比传感器的输出表示比下游侧空燃比传感器的输出表示浓的状态时的空燃比修正量的更新速度更高。

公开(公告)号：US08141533B2

公开(公告)日：2012-03-27

申请号：US12518301

申请日：2007-12-11

申请人： Takayuki Demura

发明人： Takayuki Demura

IPC分类号： F02N11/08 ,  F02N11/00

CPC分类号： F02D41/0002 ,  F01L1/34 ,  F01L2800/01 ,  F01L2800/03 ,  F02D13/0219 ,  F02D13/0249 ,  F02D13/0261 ,  F02D41/042 ,  F02D41/065 ,  F02D2013/0292 ,  F02D2200/0414 ,  F02N11/0814 ,  F02N19/004 ,  Y02T10/18 ,  Y02T10/42

摘要： A control apparatus includes a detection unit that detects a stop request to an engine, a throttle closing control unit that, when the stop request is detected, adjusts an opening amount of a throttle valve to an engine-stop throttle valve opening amount smaller than a current opening amount an engine stop detection unit that detects a stop of the engine, an engine-stop exhaust valve control unit that adjusts an opening/closing characteristic of an exhaust valve of a cylinder that will be placed initially in an intake stroke when the engine is restarted so that, when the opening amount of the throttle valve is adjusted to the engine-stop throttle valve opening amount and a stop of the engine is detected, the exhaust valve has an engine-stop exhaust valve opening/closing characteristic by which a closing timing of the exhaust valve is more delayed than a current closing timing of the exhaust valve.

摘要翻译： 控制装置包括：检测单元，其检测对发动机的停止请求;节气门关闭控制单元，当检测到停止请求时，将节流阀的开度调整为小于1的发动机停止节气门开度 当前打开量检测发动机停止的发动机停止检测单元;发动机停止排气阀控制单元，其调节最初位于进气冲程中的气缸的排气门的打开/关闭特性，当发动机 重新启动，使得当节气门的打开量被调节到发动机停止节气门开启量并且检测到发动机的停止时，排气门具有发动机停止排气阀打开/关闭特性，通过该特性， 排气门的关闭正时比排气门的当前关闭正时延迟。

公开(公告)号：US07856815B2

公开(公告)日：2010-12-28

申请号：US11996351

申请日：2006-07-27

申请人： Takayuki Demura ,  Shigeki Miyashita ,  Isamu Nakada

发明人： Takayuki Demura ,  Shigeki Miyashita ,  Isamu Nakada

IPC分类号： F01N1/00

CPC分类号： F01N3/2006 ,  F01N3/2046 ,  F01N13/009 ,  F01N13/011 ,  F01N2260/08 ,  F01N2410/06 ,  F01N2560/02 ,  Y02T10/26

摘要： In an exhaust purification system that purifies exhaust from a plurality of cylinder groups of an internal combustion engine, an exhaust passageway (1,51) from each cylinder group is divided into a plurality of passageways (2a, 2b, 52a, 52b/3,53). With regard to one or more of the divided exhaust passageways (3,53), the amount of exhaust passing therethrough is reduced so as to reduce the heat release to the outside from the exhaust as a whole. In this manner, the temperature of exhaust introduced into an exhaust purification device (4,54) is kept at high temperature.

摘要翻译： 在从内燃机的多个气缸组中净化排气的排气净化系统中，将来自各气缸组的排气通路（1,51）分割为多个通路（2a，2b，52a，52b / 3， 53）。 关于一个或多个分开的排气通道（3,53），通过其中的排气量减少，以便减少从排气整体向外部排放的热量。 以这种方式，引入排气净化装置（4,54）的排气温度保持在高温。