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1. 发明授权

US5095878A Air/fuel ratio control system for internal combustion engine 失效
标题翻译：内燃机空燃比控制系统
公开(公告)号：US5095878A
公开(公告)日：1992-03-17
申请号：US544598
申请日：1990-06-27
申请人： Shiro Kumagai , Katsuo Akishino , Reijiro Komagome , Michiyasu Yoshida , Tateo Kume , Masaki Nishizawa , Seiji Ishida , Takehisa Fujita
发明人： Shiro Kumagai , Katsuo Akishino , Reijiro Komagome , Michiyasu Yoshida , Tateo Kume , Masaki Nishizawa , Seiji Ishida , Takehisa Fujita
IPC分类号： F02D41/14
CPC分类号： F02D41/1479 , F02D41/1441 , F02D41/1475
摘要： An air/fuel ratio control system is provided for use with an internal combustion engine. The system includes a first air/fuel ratio detector arranged on an upstream side of a catalytic converter so as to detect the air/fuel ratio of the engine from components of exhaust gas, a second air/fuel ratio detector arranged in the exhaust system and having a detection response speed slower than the first air/fuel ratio detector, a device for controlling the air/fuel ratio of the engine on the basis of results of a comparison between a detection value from the first air/fuel ratio detector and a predetermined first reference value, a device for effecting a correction to the control of the air/fuel ratio by the air/fuel ratio control device on the basis of results of a comparison between a detection value from the second air/fuel ratio detector and a predetermined second reference value, and a device for shifting the second reference value to a lean air/fuel ratio side in a specific operation state of the engine.
摘要翻译：提供了一种用于内燃机的空/燃比控制系统。该系统包括布置在催化转化器的上游侧的第一空气/燃料比检测器，用于检测排气中的发动机的空燃比，布置在排气系统中的第二空/燃比检测器和具有比第一空气/燃料比检测器慢的检测响应速度的装置，用于基于来自第一空气/燃料比检测器的检测值与预定的第一空气/燃料比检测器之间的比较的结果来控制发动机的空燃比的装置第一基准值，根据来自第二空气/燃料比检测器的检测值与预定的第二空气/燃料比检测器的比较结果对空/燃比控制装置进行对空燃比的控制的修正的装置第二参考值，以及用于在发动机的特定操作状态下将第二参考值移动到稀空燃比侧的装置。

2. 发明授权

US5077971A Air/fuel ratio control system for an internal combustion engine 失效
标题翻译：用于内燃机的空燃比控制系统
公开(公告)号：US5077971A
公开(公告)日：1992-01-07
申请号：US544731
申请日：1990-06-27
申请人： Shiro Kumagai , Katsuo Akishino , Reijiro Komagome , Michiyasu Yoshida , Tateo Kume , Masaki Nishizawa , Seiji Ishida , Takehisa Fujita
发明人： Shiro Kumagai , Katsuo Akishino , Reijiro Komagome , Michiyasu Yoshida , Tateo Kume , Masaki Nishizawa , Seiji Ishida , Takehisa Fujita
IPC分类号： F02D41/14 , G01N27/406
CPC分类号： F02D41/1475 , F02D41/1441 , G01N27/4065
摘要： An air/fuel ratio control system is provided for use with an internal combustion engine. The system includes an air/fuel ratio detector arranged on an upstream side of a catalytic converter so as to detect the air/fuel ratio of the internal combustion engine from components of exhaust gas, a device for controlling the air/fuel ratio of the internal combustion engine on the basis of results of a comparison between a detection value from the air/fuel ratio detector and a predetermined reference value; and a device for shifting the reference value to a lean air/fuel ratio side in a specific operation state of the internal combustion engine.
摘要翻译：提供了一种用于内燃机的空/燃比控制系统。该系统包括布置在催化转化器的上游侧的空气/燃料比检测器，以便检测内燃机与排气成分的空燃比，用于控制内燃机的空燃比的装置基于来自空燃比检测器的检测值与预定参考值的比较结果的内燃机; 以及用于在内燃机的特定运行状态下将基准值移动到稀空燃比侧的装置。

3. 发明授权

US4912926A Air/fuel ratio control system for internal combustion engine 失效
标题翻译：内燃机空燃比控制系统
公开(公告)号：US4912926A
公开(公告)日：1990-04-03
申请号：US190259
申请日：1988-05-04
申请人： Shiro Kumagai , Reijiro Komagome , Yoshiaki Kodama , Tateo Kume
发明人： Shiro Kumagai , Reijiro Komagome , Yoshiaki Kodama , Tateo Kume
IPC分类号： F02D41/00 , F02D41/14
CPC分类号： F02D41/1441 , F02D41/1479
摘要： An air/fuel ratio control system is provided for an internal combustion engine. The system includes first and second oxygen density sensors, an air/fuel ratio control device and a standard-value changing device. The first oxygen density sensor is arranged on an upstream side of a catalytic converter, while the second oxygen density sensor is provided either inside or on a downstream side of the catalytic converter. The air/fuel control device controls the air/fuel ratio of the internal combustion engine on the basis of results of comparison between a detection value from one of the first and second oxygen density sensors and a predetermined standard value. The standard-value changing device changes the standard value on the basis of outputs from the first and second oxygen density sensors.

4. 发明授权

US4817385A Temperature control apparatus for vehicular catalytic converters 失效
标题翻译：车用催化转化器温控装置
公开(公告)号：US4817385A
公开(公告)日：1989-04-04
申请号：US72220
申请日：1987-07-10
申请人： Shiro Kumagai
发明人： Shiro Kumagai
IPC分类号： F01N3/20 , F01N9/00
CPC分类号： F01N3/2053 , F01N9/00 , F01N2390/02 , F01N2410/02 , Y02T10/22 , Y02T10/47
摘要： A temperature control apparatus for at least two catalytic converters which are connected in series in an exhaust passage of an internal combustion engine mounted on a vehicle. A by-pass is disposed in parallel with a first catalytic converter which is connected in the vicinity of the engine. Valve drive means serves to drive a control valve for controlling the ratio between the amounts of exhaust gas introduced into the first catalytic converter and the by-pass. Control means serves to calculate the deviation between a reference value and a temperature value, which is associated with the catalyst-bed temperature of the first catalytic converter, and is detected by temperature detecting means, and to deliver a drive signal to the valve drive means in accordance with the deviation, thereby controlling the opening of the control valve. Immediately after the start of the engine, therefore, the catalyst-bed temperature of the first catalytic converter rises to the reference temperature value for an optimum purifying efficiency. Thereafter, the bed temperature is kept constantly in the vicinity of the reference value.
摘要翻译：一种用于至少两个催化转化器的温度控制装置，其串联连接在安装在车辆上的内燃机的排气通道中。旁路与在发动机附近连接的第一催化转化器平行配置。阀驱动装置用于驱动控制阀，用于控制引入第一催化转化器的废气量与旁路之间的比率。控制装置用于计算与第一催化转化器的催化剂床温度相关的参考值和温度值之间的偏差，并且由温度检测装置检测，并将驱动信号传送到阀驱动装置根据偏差，从而控制控制阀的打开。因此，在发动机起动之后，第一催化转化器的催化剂床温度立即上升至参考温度值以获得最佳净化效率。此后，床温恒定地保持在基准值附近。

5. 发明授权

US06588205B1 Exhaust gas purifying apparatus 失效
标题翻译：废气净化装置
公开(公告)号：US06588205B1
公开(公告)日：2003-07-08
申请号：US09076415
申请日：1998-05-12
申请人： Shiro Kumagai , Kazuo Koga
发明人： Shiro Kumagai , Kazuo Koga
IPC分类号： F01N300
CPC分类号： B01D53/945 , B01D53/9454 , B01D53/9495 , F01N3/2006 , F01N3/206 , F01N13/0097 , F01N2260/04 , F01N2430/06 , F01N2570/04 , F01N2570/14 , F02B1/04 , F02B2075/125 , F02D41/005 , F02D41/0275 , F02D41/028 , F02M26/15 , F02M26/21 , Y02A50/2324 , Y02A50/2344 , Y02T10/123 , Y02T10/22 , Y02T10/26
摘要： An exhaust gas purifying apparatus is provided which includes a three way catalyst provided in an exhaust pipe of an internal combustion engine; and a NOx adsorption/reduction catalyst provided in the exhaust pipe to be located downstream of the three way catalyst. Nickel serving as a catalyst source is loaded on an alumina support layer of the NOx adsorption/reduction catalyst. When the engine operates with a fuel-rich air/fuel mixture at a relatively small air-fuel ratio, a reducing atmosphere is formed around the NOx catalyst, and the reaction to convert NiO into NiS occurs, thereby to consume H2S. As a result, consumption of SO2 proceeds, and the reaction to convert BaSO4 as an oxidized product of sulfur deposited on the NOx catalyst into BaCO3 as an NOx adsorbent is accelerated in an oxidizing atmosphere, thereby resuming the purifying capability of the NOx catalyst.
摘要翻译：提供一种排气净化装置，其包括设置在内燃机的排气管中的三通催化剂; 和设置在排气管内的NOx吸附还原催化剂，位于三元催化剂的下游。用作催化剂源的镍装载在NOx吸附/还原催化剂的氧化铝载体层上。当发动机以相对较小的空燃比的富燃料空气/燃料混合物运行时，在NOx催化剂周围形成还原气氛，并且发生将NiO转化为NiS的反应，从而消耗H 2 S. 结果，SO 2的消耗进行，并且在氧化气氛中加速将作为NOx吸附剂沉积在NO x催化剂上的硫的氧化产物的BaSO 4转化为BaCO 3的反应，从而恢复NOx催化剂的净化能力。

6. 发明授权

US5033440A Apparatus for controlling air/fuel ratio of internal combustion engine 失效
标题翻译：用于控制内燃机空燃比的装置
公开(公告)号：US5033440A
公开(公告)日：1991-07-23
申请号：US544615
申请日：1990-06-27
申请人： Shiro Kumagai , Yoshiaki Kodama , Nobuyuki Yasuda , Katsuyuki Maeda
发明人： Shiro Kumagai , Yoshiaki Kodama , Nobuyuki Yasuda , Katsuyuki Maeda
IPC分类号： F02D41/14
CPC分类号： F02D41/1479 , F02D41/2438 , F02D41/2454
摘要： An apparatus is provided for controlling the air/fuel ratio of an internal combustion engine. The apparatus includes a sensor disposed in an exhaust system for detecting components of exhaust gas, a device for compulsorily changing the air/fuel ratio, another device for setting a first target value which gives a target air/fuel ratio to be compared with each output from the sensor, and a further device for controlling the air/fuel ratio, which has been compulsorily changed by the air/fuel ratio changing device, on the basis of the result of a comparison between the output and the first target value, whereby the average air/fuel ratio may be controlled to the first target air/fuel ratio. The first target value setting device includes an element for modifying the first target value to a second target value, which gives a leaner air/fuel ratio, in a specific operation state of the engine.
摘要翻译：提供一种用于控制内燃机的空燃比的装置。该装置包括设置在排气系统中用于检测排气成分的传感器，用于强制改变空气/燃料比的装置，用于设定第一目标值的装置，其给出与每个输出相比较的目标空气/燃料比根据输出与第一目标值之间的比较结果，从传感器和另一个用于控制由空气/燃料比变更装置强制改变的空气/燃料比的装置，由此，可以将平均空燃比控制在第一目标空燃比。第一目标值设定装置包括用于在发动机的特定操作状态下将第一目标值修正为赋予较冷空气/燃料比的第二目标值的元件。

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