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.

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。

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。

公开(公告)号：US5119629A

公开(公告)日：1992-06-09

申请号：US372562

申请日：1989-06-28

申请人： Tateo Kume ,  Reijiro Komagome ,  Katsuo Akishino ,  Yoshiaki Kodama ,  Michiyasu Yoshida ,  Toshio Yuminaka

发明人： Tateo Kume ,  Reijiro Komagome ,  Katsuo Akishino ,  Yoshiaki Kodama ,  Michiyasu Yoshida ,  Toshio Yuminaka

IPC分类号： F02D41/14

CPC分类号： F02D41/1487 ,  F02D41/1408

摘要： A method of and an apparatus for controlling the air fuel ratio of an internal combustion engine by which the air fuel ratio can be controlled so that the exhaust gas purifying efficiency of a catalytic converter for purifying exhaust gas of the engine may be maximum. In the apparatus, exhaust gas of the engine is first passed through a catalytic converter and then is introduced into an oxygen concentration sensor of the .lambda. type. When the air fuel ratio is compulsorily varied, the compulsorily varied condition of the air fuel ratio such as an average of variations of the air fuel ratio (average air fuel ratio) is corrected in accordance with an output of the oxygen concentration sensor thereby to control the air fuel ratio so that the purifying efficiency of the exhaust gas purifying catalytic converter may be maximum.

摘要翻译： 用于控制可以控制空燃比的内燃机的空燃比的方法和装置，使得用于净化发动机废气的催化转化器的废气净化效率最大。 在该装置中，首先将发动机的废气通过催化转化器，然后引入到λ型的氧浓度传感器中。 当空燃比强制变化时，根据氧浓度传感器的输出来校正诸如空燃比（平均空燃比）的变化的平均值的空燃比的强制变化状态，从而控制 空燃比使排气净化催化剂的净化效率最大化。

公开(公告)号：US5025767A

公开(公告)日：1991-06-25

申请号：US335212

申请日：1989-04-07

申请人： Tateo Kume ,  Reijiro Komagome ,  Kazuhiro Shiraishi

发明人： Tateo Kume ,  Reijiro Komagome ,  Kazuhiro Shiraishi

IPC分类号： F02D35/00 ,  F02D41/00 ,  F02D41/14 ,  G01N27/406

CPC分类号： F02D41/1441 ,  G01N27/4065

摘要： Disclosed herein is an air/fuel ratio control system for an internal combustion engine. The system includes a first oxygen density sensor element, a second oxygen density sensor element having a slower detection response speed than the first sensor element, an air/fuel ratio control unit for controlling the air/fuel ratio of the engine on the basis of results of a comparison between a detection value from the first sensor element and a standard value, and an air/fuel ratio control correction means for effecting a correction to the air/fuel ratio control by the air/fuel ratio control unit on the basis of results of comparison between a detection value from the second sensor element and a second standard value. An air/fuel ratio controlling oxygen density sensor is also disclosed. The sensor is constructed of a first oxygen density sensor element and a second oxygen density sensor element for detecting the density of oxygen in exhaust gas at a slower detection response speed compared to the first sensor element. The first and second oxygen density sensor elements are both provided on a common base member.

摘要翻译： 本文公开了一种用于内燃机的空燃比控制系统。 该系统包括第一氧浓度传感器元件，具有比第一传感器元件慢的检测响应速度的第二氧浓度传感器元件，用于基于结果控制发动机的空燃比的空/燃比控制单元 比较来自第一传感器元件的检测值和标准值之间的比较的空燃比控制校正装置，用于根据结果对空/燃比控制单元进行空/燃比控制的校正 比较来自第二传感器元件的检测值和第二标准值。 还公开了空气/燃料比控制氧浓度传感器。 传感器由第一氧浓度传感器元件和第二氧浓度传感器元件构成，用于与第一传感器元件相比以较慢的检测响应速度检测废气中的氧气密度。 第一和第二氧浓度传感器元件均设置在公共基座构件上。

公开(公告)号：US4765294A

公开(公告)日：1988-08-23

申请号：US40855

申请日：1987-04-21

申请人： Takehiko Katsumoto ,  Osamu Hirako ,  Reijiro Komagome

发明人： Takehiko Katsumoto ,  Osamu Hirako ,  Reijiro Komagome

IPC分类号： F02B31/06 ,  F22B5/02

CPC分类号： F02B31/06 ,  Y02T10/146

摘要： An intake device for an internal combustion engine, in which the intake port is formed to a specific shape without using a partition plate, provided with a valve at its inlet, and the flow direction of intake air to the combustion chambers can be varied by controlling the opening of the valve, thereby providing easy manufacture and reduced cost of the intake port and improved performance when the engine is heavily loaded.

摘要翻译： 一种用于内燃机的进气装置，其中进气口在不使用隔板的情况下形成为特定形状，在其入口处设有阀，并且可以通过控制来改变进入燃烧室的进气流动方向 阀的打开，从而提供容易的制造和降低进气口的成本，并且当发动机重负载时提高性能。