公开(公告)号：US06978598B2

公开(公告)日：2005-12-27

申请号：US10484561

申请日：2002-08-23

申请人： Shiro Takakura ,  Tetsuo Endo ,  Kei Machida ,  Norihito Watanabe

发明人： Shiro Takakura ,  Tetsuo Endo ,  Kei Machida ,  Norihito Watanabe

IPC分类号： F01N3/08 ,  F01N11/00 ,  F01N13/02 ,  F02D41/14 ,  F01N3/00

CPC分类号： F01N3/0835 ,  F01N3/0814 ,  F01N11/00 ,  F01N11/007 ,  F01N13/009 ,  F01N2550/03 ,  F01N2560/025 ,  F01N2560/028 ,  F02D41/1454 ,  F02D41/1456 ,  F02D2200/0418 ,  Y02T10/47

摘要： A humidity sensor 4 is disposed downstream of an exhaust gas purifier comprising a hydrocarbon adsorbing catalyst 2, and an air-fuel ratio sensor 5 is disposed at least downstream of the exhaust gas purifier. The hydrocarbon adsorbing ability of a hydrocarbon adsorbent of a hydrocarbon adsorbing catalyst 2 (the exhaust gas purifier) is evaluated using output data of the humidity sensor 4. The unburned gas purifying ability based on a catalytic action of the hydrocarbon adsorbing catalyst 2 is evaluated using output data of the air-fuel ratio sensor 5. Based on the evaluated results, the overall deteriorated state of the exhaust gas purifier is evaluated. The overall deteriorated state of the exhaust gas purifier which has the hydrocarbon adsorbing catalyst 2 can thus adequately be evaluated.

摘要翻译： 湿度传感器4设置在包括烃吸附催化剂2的废气净化器的下游，并且空气 - 燃料比传感器5至少设置在废气净化器的下游。 使用湿度传感器4的输出数据来评价烃吸附催化剂2（排气净化器）的烃吸附剂的烃吸附能力。 使用空燃比传感器5的输出数据来评价基于烃吸附催化剂2的催化作用的未燃气净化能力。 基于评价结果，评价废气净化器的整体劣化状态。 因此，可以充分地评价具有烃吸附催化剂2的废气净化器的整体劣化状态。

公开(公告)号：US06799420B2

公开(公告)日：2004-10-05

申请号：US10268975

申请日：2002-10-11

申请人： Masaki Ueno ,  Tetsuo Endo ,  Hideharu Yamazaki ,  Shiro Takakura ,  Kei Machida ,  Yasuyuki Miyahara ,  Tadashi Sato

发明人： Masaki Ueno ,  Tetsuo Endo ,  Hideharu Yamazaki ,  Shiro Takakura ,  Kei Machida ,  Yasuyuki Miyahara ,  Tadashi Sato

IPC分类号： F01N300

CPC分类号： F01N3/0835 ,  B01D53/0454 ,  B01D53/9495 ,  F01N3/0814 ,  F01N3/0878 ,  F01N11/00 ,  F01N2550/03 ,  F01N2560/028 ,  Y02T10/47

摘要： A temperature sensor is disposed near an HC adsorbent in an exhaust system of an internal combustion engine. After the internal combustion engine is shut off, a deteriorated state of the HC adsorbent is evaluated based on a value of the humidity detected by a humidity sensor. The deteriorated state of the HC adsorbent is evaluated by comparing the detected value of the humidity with a threshold established depending on the temperature state near the HC adsorbent. In evaluating deteriorated state of the HC adsorbent, a change in the output characteristics of the humidity sensor depending on its temperature state is compensated for.

摘要翻译： 温度传感器设置在内燃机的排气系统内的HC吸附剂附近。 在关闭内燃机之后，基于由湿度传感器检测到的湿度的值来评价HC吸附剂的劣化状态。 通过将检测到的湿度值与根据HC吸附剂附近的温度状态建立的阈值进行比较来评价HC吸附剂的劣化状态。 在评估HC吸附剂的劣化状态时，补偿根据其温度状态的湿度传感器的输出特性的变化。

公开(公告)号：US06334304B1

公开(公告)日：2002-01-01

申请号：US09551170

申请日：2000-04-17

申请人： Kei Machida ,  Tetsuo Endo ,  Shiro Takakura ,  Yuji Yasui

发明人： Kei Machida ,  Tetsuo Endo ,  Shiro Takakura ,  Yuji Yasui

IPC分类号： F01N300

CPC分类号： F01N3/0835 ,  B01D53/944 ,  B01D53/9495 ,  F01N3/0814 ,  F01N3/0871 ,  F01N3/0878 ,  F01N3/101 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/03 ,  F01N2570/12 ,  F01N2900/0422 ,  F02D41/1446 ,  F02D45/00 ,  F02D2200/0804 ,  Y02T10/22 ,  Y02T10/47

摘要： A system for discriminating degradation of an exhaust purification system of an internal combustion engine having an adsorbent installed at a bypass exhaust gas passage adsorbing unburned HC in exhaust gas generated by the engine. Based on the assumption that the degradation of the adsorbent made from zeolite progresses or advances depending on its temperature, the temperature is detected and if it exceeds a predetermined temperature, an index indicative of the degree of degradation progress is determined based on a surplus exceeding the predetermined temperature. The index is accumulated to be compared with a threshold value and the adsorbent is discriminated to be degraded when the accumulated index exceeds the threshold value, thereby enabling to discriminate the adsorbent degradation accurately with a simple configuration.

摘要翻译： 一种用于区分内燃机的排气净化系统的劣化的系统，所述内燃机的排气净化系统具有安装在旁路废气通道上的吸附剂，吸附由发动机产生的废气中的未燃HC。 基于由沸石制成的吸附剂的降解根据其温度进行或退化的假设，检测温度并且如果其超过预定温度，则表示降解进行程度的指标基于超过 预定温度。 累积指数与阈值进行比较，并且当累积指数超过阈值时，鉴别吸附剂劣化，从而能够以简单的配置精确地鉴别吸附剂劣化。

公开(公告)号：US06945034B2

公开(公告)日：2005-09-20

申请号：US10658536

申请日：2003-09-10

申请人： Masaki Ueno ,  Shiro Takakura ,  Kei Machida

发明人： Masaki Ueno ,  Shiro Takakura ,  Kei Machida

IPC分类号： F01N3/24 ,  B01D53/86 ,  B01D53/94 ,  F01N3/08 ,  F01N3/18 ,  F01N13/02 ,  F01N3/00

CPC分类号： F01N3/0835 ,  F01N3/0814 ,  F01N3/0878 ,  F01N3/101 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2560/028 ,  F02D2200/0802 ,  F02D2200/0804 ,  F02D2200/703 ,  Y02T10/22

摘要： An exhaust gas purifying apparatus for an internal combustion engine is provided for switching a switching valve at an optimal timing in accordance with an actual activated state of a catalyzer and a heated state of an adsorbent to achieve an optimal exhaust gas characteristic. The exhaust gas purifying apparatus comprises a catalyzer disposed in an exhaust system of the internal combustion engine, an adsorbent filled in a second passage circumventing a first passage in the exhaust system for adsorbing hydrocarbons within exhaust gases, a switching valve operable to switch between an open position for opening the first passage and a close position for closing the first passage, an ECU for detecting an atmospheric pressure state, and a switching valve driver for driving the switching valve to the close position upon start of the internal combustion engine, and driving the switching valve to the open position in accordance with the detected atmospheric pressure state.

摘要翻译： 提供一种用于内燃机的排气净化装置，用于根据催化剂的实际激活状态和吸附剂的加热状态在最佳定时切换切换阀，以实现最佳废气特性。 排气净化装置包括设置在内燃机的排气系统中的催化剂，填充在围绕排气系统中的第一通道的吸附在排气中的碳氢化合物的第二通道中的吸附剂，可操作以在开放 用于打开第一通道的位置和用于关闭第一通道的关闭位置，用于检测大气压力状态的ECU;以及切换阀驱动器，用于在内燃机启动时将切换阀驱动到关闭位置，并且驱动 根据检测到的大气压状态切换阀到打开位置。

公开(公告)号：US06820416B2

公开(公告)日：2004-11-23

申请号：US10060058

申请日：2002-01-31

申请人： Masaki Ueno ,  Shiro Takakura ,  Kei Machida

发明人： Masaki Ueno ,  Shiro Takakura ,  Kei Machida

IPC分类号： F01N300

CPC分类号： F01N3/0835 ,  F01N3/0807 ,  F01N2410/12 ,  F01N2560/028 ,  Y02T10/20

摘要： An exhaust emission control system for an internal combustion engine has an exhaust passage switching device for switching an exhaust gas flow path, an HC adsorbent material disposed within the main exhaust passage for adsorbing and releasing unburned constituents in exhaust gases, and a control device for controlling the switching device such that the exhaust gas flow path is switched to the main exhaust passage when the unburned constituents is adsorbed by the HC adsorbent material, that the exhaust gas flow path is switched to the bypass exhaust passage when the unburned constituents adsorbed by the HC adsorbent material is released from the HC adsorbent material, and that the exhaust gas flow path is switched to the main exhaust passage when the release of the unburned constituents from the HC adsorbent material is completed.

摘要翻译： 一种用于内燃机的废气排放控制系统具有用于切换废气流路的排气通道切换装置，设置在主排气通路内的用于吸附和释放废气中的未燃烧成分的HC吸附剂材料，以及控制装置 所述切换装置使得当所述未燃烧成分被所述HC吸附材料吸附时，所述排气流路切换到所述主排气通路，当所述未燃烧成分被所述HC吸附时，所述排气流路切换到旁通排气通路 吸附剂材料从HC吸附剂材料中释放出来，当完成从HC吸附剂材料的未燃烧成分的释放时，排气流路切换到主排气通道。

公开(公告)号：US06367245B1

公开(公告)日：2002-04-09

申请号：US09654157

申请日：2000-09-01

申请人： Yuji Yasui ,  Tetsuo Endo ,  Tadashi Sato ,  Shiro Takakura

发明人： Yuji Yasui ,  Tetsuo Endo ,  Tadashi Sato ,  Shiro Takakura

IPC分类号： F01N300

CPC分类号： F01N3/0835 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0878 ,  F01N11/00 ,  F01N11/002 ,  F01N13/009 ,  F01N2550/03 ,  F01N2900/0422 ,  Y02T10/47

摘要： Exhaust gas sensors or air-fuel ratio sensors for generating outputs depending on the concentration of HC are disposed respectively upstream and downstream of an HC adsorbent in an exhaust passage. When an exhaust gas emitted from an internal combustion engine is supplied to the exhaust passage to allow the HC adsorbent to adsorb HC in the exhaust gas, an amount of HC adsorbed by the HC adsorbent per unit time is determined based on the difference between outputs from the exhaust gas sensors. A deteriorated state of the HC adsorbent is evaluated by comparing the determined adsorbed amount of HC and its integrated value with a threshold set depending on a temperature or the like of the HC adsorbent.

摘要翻译： 用于根据HC浓度产生输出的排气传感器或空燃比传感器分别设置在排气通道中的HC吸附剂的上游和下游。 当从内燃机排出的排气被供给到排气通道以允许HC吸附剂吸附废气中的HC时，每单位时间吸附HC吸附剂的HC量根据来自 废气传感器。 通过将所确定的HC的吸附量与其积分值进行比较，根据HC吸附剂的温度等设定阈值来评价HC吸附剂的劣化状态。

公开(公告)号：US06477830B2

公开(公告)日：2002-11-12

申请号：US09833615

申请日：2001-04-13

申请人： Shiro Takakura ,  Masaki Ueno ,  Masahiro Sato ,  Tetsuo Endo

发明人： Shiro Takakura ,  Masaki Ueno ,  Masahiro Sato ,  Tetsuo Endo

IPC分类号： F01N300

CPC分类号： F01N3/0835 ,  F01N3/101 ,  F01N11/00 ,  F01N13/009 ,  F01N13/0093 ,  F01N2250/12 ,  F01N2410/12 ,  F01N2550/03 ,  F01N2550/06 ,  F01N2560/028 ,  F01N2900/0422 ,  Y02T10/22 ,  Y02T10/47

摘要： A fault determining apparatus for an exhaust passage switching valve which is capable of directly, rapidly and properly determining a fault in an exhaust passage switching valve, under conditions such as immediately after the start of an internal combustion engine, in which the switching valve should be essentially operated, without the need for setting a special fault determining mode. The fault determining apparatus determines a fault in the exhaust passage switching valve for switching an exhaust passage of exhaust gases discharged from an internal combustion engine between a main exhaust passage having a three-way catalyst and a bypass exhaust passage having filled in an intermediate portion thereof an adsorbent capable of adsorbing hydrocarbons and moisture in the exhaust gases in accordance with an activated state of the three-way catalyst. The fault determining apparatus comprises a humidity sensor for detecting a humidity of the exhaust gases introduced into the bypass exhaust passage, and an ECU for determining a fault in the exhaust passage switching valve based on the result of detection performed by the humidity sensor when the exhaust passage should have been switched to the bypass exhaust passage by the exhaust passage switching valve.

摘要翻译： 一种用于排气通道切换阀的故障确定装置，其能够在内燃机启动之后的状态下直接，快速和适当地确定排气通道切换阀中的故障，其中切换阀应当 基本上操作，而不需要设置专门的故障确定模式。 故障确定装置确定排气通道切换阀中的故障，用于切换在具有三通催化剂的主排气通道和填充在其中间部分中的旁通排气通道之间从内燃机排出的废气的排气通道 能够根据三元催化剂的活化状态吸附废气中的碳氢化合物和水分的吸附剂。 故障判定装置包括：湿度传感器，用于检测引入旁通排气通道的废气的湿度;以及ECU，其用于根据由排气通道切换阀中的排气通道进行的检测结果来确定排气通道切换阀的故障 通道应该被排气通道切换阀切换到旁通排气通道。

公开(公告)号：US06923849B2

公开(公告)日：2005-08-02

申请号：US10608156

申请日：2003-06-30

申请人： Masaki Ueno ,  Hideharu Yamazaki ,  Shiro Takakura ,  Yasuyuki Miyahara ,  Tetsuo Endo

发明人： Masaki Ueno ,  Hideharu Yamazaki ,  Shiro Takakura ,  Yasuyuki Miyahara ,  Tetsuo Endo

IPC分类号： F02D45/00 ,  B01D53/04 ,  F01N3/08 ,  F01N3/18 ,  F01N3/20 ,  F01N3/24

CPC分类号： B01D53/0454 ,  Y10S55/30

摘要： A hydrocarbon adsorbent state determining apparatus is provided for compensating the ability of a hydrocarbon adsorbent to adsorb moisture for fluctuations due to a change in the flow velocity of exhaust gases to accurately determine the state of the hydrocarbon adsorbent, including a deterioration thereof, irrespective of the change in the flow rate of exhaust gases. The hydrocarbon adsorbent state determining apparatus determines the state of a hydrocarbon adsorbent disposed in an exhaust system of an internal combustion engine for adsorbing hydrocarbons and moisture within exhaust gases. The hydrocarbon adsorbent state determining apparatus comprises a downstream humidity sensor for detecting the humidity of exhaust gases which have passed through the hydrocarbon adsorbent, a flow velocity parameter detector for detecting a flow velocity parameter indicative of a flow velocity of the exhaust gases, and an ECU for determining the state of the hydrocarbon adsorbent in accordance with the detected humidity of the exhaust gases and the flow velocity parameter.

摘要翻译： 提供一种烃吸附剂状态确定装置，用于补偿烃吸附剂由于废气流速的变化而吸收水分的能力，从而准确地确定烃吸附剂的状态，包括其劣化，而不管 废气流量的变化。 碳氢化合物吸附剂状态决定装置确定在内燃机的排气系统中设置的用于吸附废气中的碳氢化合物和水分的烃类吸附剂的状态。 碳氢化合物吸附剂状态确定装置包括用于检测通过烃类吸附剂的废气湿度的下游湿度传感器，用于检测表示废气流速的流速参数的流速参数检测器，以及ECU 用于根据检测到的废气湿度和流速参数确定烃类吸附剂的状态。

公开(公告)号：US06758033B2

公开(公告)日：2004-07-06

申请号：US10234710

申请日：2002-09-05

申请人： Masaki Ueno ,  Yoshihisa Iwaki ,  Masahiro Sato ,  Tetsuo Endo ,  Shiro Takakura

发明人： Masaki Ueno ,  Yoshihisa Iwaki ,  Masahiro Sato ,  Tetsuo Endo ,  Shiro Takakura

IPC分类号： F01N300

CPC分类号： F01N3/0835 ,  F01N3/0878 ,  F01N3/101 ,  F01N11/00 ,  F01N11/005 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2550/03 ,  F02D41/027 ,  F02D41/1456 ,  F02D41/1495 ,  F02D2200/0418 ,  F02D2200/0802 ,  F02M26/15 ,  Y02T10/22 ,  Y02T10/47

摘要： A state determining apparatus for an exhaust gas purifier is provided for determining the state of the exhaust gas purifier including an adsorbent for adsorbing hydrocarbons; in accordance with the temperature state in the exhaust system of an internal combustion engine. The state determining apparatus is arranged in an exhaust system of the internal combustion engine. The state determining apparatus comprises a humidity sensor for detecting the humidity within a bypass exhaust pipe, and an ECU for determining the temperature state of the exhaust system and determining the state of adsorbent in accordance with the humidity within the bypass exhaust pipe detected by the humidity sensor and the temperature state in the exhaust system detected by the ECU.

摘要翻译： 提供一种用于排气净化器的状态确定装置，用于确定包括用于吸附烃的吸附剂的废气净化器的状态; 根据内燃机的排气系统的温度状态。 状态判定装置配置在内燃机的排气系统中。 状态判定装置包括用于检测旁通排气管内的湿度的湿度传感器和用于确定排气系统的温度状态的ECU，并根据由湿度检测到的旁通排气管内的湿度来确定吸附剂的状态 传感器和ECU检测到的排气系统中的温度状态。

公开(公告)号：US06792749B2

公开(公告)日：2004-09-21

申请号：US10449393

申请日：2003-06-02

申请人： Masaki Ueno ,  Shiro Takakura ,  Yasuyuki Miyahara ,  Tadashi Sato

发明人： Masaki Ueno ,  Shiro Takakura ,  Yasuyuki Miyahara ,  Tadashi Sato

IPC分类号： F01N300

CPC分类号： F01N3/101 ,  F01N3/0878 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2560/028 ,  F01N2570/10 ,  F01N2570/12 ,  F01N2570/14 ,  Y02T10/22 ,  Y02T10/47

摘要： An exhaust gas purifying apparatus for an internal combustion engine is provided for switching a switching valve at an optimal timing in accordance with an actual activated state of a catalyzer to achieve an optimal exhaust gas characteristic. The exhaust gas purifying apparatus comprises a catalyzer disposed in an exhaust system of the internal combustion engine, an adsorbent filled in a second passage circumventing a first passage in the exhaust system for adsorbing hydrocarbons within exhaust gases, a switching valve operable to switch between an open position for opening the first passage and a close position for closing the first passage, an ECU for detecting a temperature state of the exhaust system upon start of the internal combustion engine, and calculating the calory of exhaust gases discharged after the start of the internal combustion engine, and a switching valve driver for driving the switching valve to the close position upon start of the internal combustion engine, and driving the switching valve to the open position in accordance with the detected start-time temperature state of the exhaust system, and the calculated post-start exhaust gas calory.

摘要翻译： 提供一种用于内燃机的排气净化装置，用于根据催化器的实际激活状态在最佳定时切换切换阀，以实现最佳废气特性。 排气净化装置包括设置在内燃机的排气系统中的催化剂，填充在围绕排气系统中的第一通道的吸附在排气中的碳氢化合物的第二通道中的吸附剂，可操作以在开放 用于打开第一通道的位置和用于关闭第一通道的关闭位置; ECU，用于在内燃机启动时检测排气系统的温度状态，以及计算在内燃开始之后排出的废气的热量 发动机和用于在内燃机启动时将切换阀驱动到关闭位置的切换阀驱动器，并且根据检测到的排气系统的起动时间温度状态将切换阀驱动到打开位置，并且 计算起动后废气的卡路里。