公开(公告)号：US06763655B2

公开(公告)日：2004-07-20

申请号：US09797995

申请日：2001-03-05

申请人： Masaki Ueno ,  Shusuke Akazaki ,  Masahiro Sato ,  Hideharu Yamazaki ,  Tetsuo Endo ,  Yoshihisa Iwaki ,  Takashi Haga ,  Tadashi Sato

发明人： Masaki Ueno ,  Shusuke Akazaki ,  Masahiro Sato ,  Hideharu Yamazaki ,  Tetsuo Endo ,  Yoshihisa Iwaki ,  Takashi Haga ,  Tadashi Sato

IPC分类号： F01N300

CPC分类号： F01N3/0835 ,  F01N3/0814 ,  F01N3/0878 ,  F01N3/101 ,  F01N11/00 ,  F01N13/009 ,  F01N13/0093 ,  F01N2250/12 ,  F01N2550/03 ,  F01N2560/028 ,  F01N2570/12 ,  F01N2900/0422 ,  Y02T10/22 ,  Y02T10/47

摘要： A catalyst state detector for detecting a state of an exhaust gas purifying catalyst which is capable of accurately detecting the state, including deterioration, of an HC adsorbent contained in the exhaust gas purifying catalyst for adsorbing hydrocarbons in exhaust gases of an internal combustion engine, and can be manufactured at a low cost. The exhaust gas purifying catalyst is arranged at an intermediate portion of an exhaust pipe, and the HC adsorbent is capable of adsorbing hydrocarbons and moisture in exhaust gases. The catalyst state detector comprises a downstream humidity sensor arranged at a location downstream of the HC adsorbent in the exhaust pipe for detecting a humidity of the exhaust gases, and an adsorbent state detecting unit (ECU) for detecting the state of the HC adsorbent in accordance with the result of detection made by the downstream humidity sensor.

摘要翻译： 一种用于检测废气净化催化剂的状态的催化剂状态检测器，其能够精确地检测包含在用于吸收内燃机的废气中的碳氢化合物的废气净化催化剂中的HC吸附剂的状态的劣化，以及 可以以低成本制造。 排气净化催化剂配置在排气管的中间部，HC吸附剂能够吸附废气中的碳氢化合物和水分。 催化剂状态检测器包括布置在排气管中的HC吸附剂下游的位置处的下游湿度传感器，用于检测废气的湿度;以及吸附状态检测单元（ECU），用于检测HC吸附剂的状态 由下游湿度传感器进行检测。

公开(公告)号：US06354076B1

公开(公告)日：2002-03-12

申请号：US09354090

申请日：1999-07-15

申请人： Yuji Yasui ,  Shusuke Akazaki ,  Tadashi Satoh ,  Yoshihisa Iwaki ,  Masaki Ueno ,  Takashi Haga ,  Tetsuo Endo

发明人： Yuji Yasui ,  Shusuke Akazaki ,  Tadashi Satoh ,  Yoshihisa Iwaki ,  Masaki Ueno ,  Takashi Haga ,  Tetsuo Endo

IPC分类号： F01N300

CPC分类号： F01N3/0835 ,  F01N3/0878 ,  F01N3/101 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2550/03 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/0422 ,  Y02T10/22 ,  Y02T10/47

摘要： A system for purifying exhaust gas generated by an internal combustion engine having an adsorbent, installed in an exhaust system of the engine, which adsorbs unburned components of the exhaust gas such as hydrocarbons generated by the engine. The system has a first temperature sensor for detecting a temperature of the adsorbent and timer for measuring a time until the detected temperature becomes greater or equal to a predetermined value, when the measured time is less than a threshold value, it is discriminated that the adsorbent deteriorates. With this, the deterioration of the adsorbent can be discriminated accurately.

摘要翻译： 一种用于净化由具有吸附剂的内燃机产生的废气的系统，其安装在发动机的排气系统中，其吸附由发动机产生的烃类等废气的未燃烧成分。 该系统具有用于检测吸附剂的温度的第一温度传感器和用于测量直到检测到的温度变得大于或等于预定值的时间的计时器，当测量的时间小于阈值时，区分吸附剂 恶化 由此，可以准确地区分吸附剂的劣化。

公开(公告)号：US06602471B1

公开(公告)日：2003-08-05

申请号：US09568125

申请日：2000-05-10

申请人： Masahiro Sato ,  Yoshihisa Iwaki ,  Yuji Yasui ,  Takashi Haga ,  Masaki Ueno ,  Tetsuo Endo

发明人： Masahiro Sato ,  Yoshihisa Iwaki ,  Yuji Yasui ,  Takashi Haga ,  Masaki Ueno ,  Tetsuo Endo

IPC分类号： G01N3096

CPC分类号： F01N3/0835 ,  F01N3/0814 ,  F01N13/009 ,  F01N2370/04 ,  F01N2560/028 ,  G01N27/043 ,  G01N27/221 ,  G01N33/0047 ,  Y10T436/21

摘要： There are provided an adsorption amount sensor which is capable of accurately detecting an amount of hydrocarbons or water adsorbed by a zeolite of a hydrocarbon adsorber, even during operation of an engine, as well as a coking sensor which is capable of accurately detecting an amount of coke deposition on inner surfaces of a pipe of an internal combustion engine, even during operation of an engine. The adsorption amount sensor has a plurality of electrodes arranged in the vicinity of the hydrocarbon adsorber in a manner opposed to each other and each carrying a zeolite thereon. The amount of hydrocarbons adsorbed is detected by using a parameter indicative of changes in at least one of a resistance value between the electrodes and an electrical capacitance between the electrodes. The coking sensor has a plurality of electrodes arranged within the pipe of the engine in a manner opposed to each other and each having a surface thereof coated with an insulating material. The amount of coke deposition is detected by using a parameter indicative of changes in at least one of a resistance value between the electrodes and an electrical capacitance between the electrodes.

摘要翻译： 提供了一种吸附量传感器，其能够精确地检测碳氢化合物吸附器的沸石或发动机的操作期间吸附的烃的量，以及焦化传感器，该焦化传感器能够精确地检测 即使在发动机的运转期间，内燃机的管的内表面上的焦炭沉积。 吸附量传感器具有以彼此相对的方式布置在烃吸附器附近的多个电极，并且各自在其上承载沸石。 通过使用指示电极之间的电阻值和电极之间的电容中的至少一个的变化的参数来检测吸附的烃的量。 焦化传感器具有以彼此相对的方式布置在发动机的管内的多个电极，并且每个电极的表面涂覆有绝缘材料。 通过使用指示电极之间的电阻值和电极之间的电容中的至少一个的变化的参数来检测焦炭沉积量。

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：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：US06928805B2

公开(公告)日：2005-08-16

申请号：US10490392

申请日：2002-10-21

申请人： Hideharu Yamazaki ,  Masahiro Sato ,  Kei Machida ,  Tetsuo Endo ,  Masaki Ueno

发明人： Hideharu Yamazaki ,  Masahiro Sato ,  Kei Machida ,  Tetsuo Endo ,  Masaki Ueno

IPC分类号： F01N3/08 ,  F01N11/00 ,  F02M25/07 ,  F01N3/00

CPC分类号： F01N11/00 ,  F01N3/0835 ,  F01N3/0878 ,  F01N2550/03 ,  F01N2560/028 ,  F02D2200/0418 ,  F02M26/15 ,  Y02T10/20 ,  Y02T10/47

摘要： A characteristic change of a humidity sensor 19 is detected based on the transitional characteristics of output data of the humidity sensor 19 with respect to integrated moisture quantity data representative of an integrated amount of moisture that is supplied to an HG adsorbent 7 by an exhaust gas after an engine 1 has started to operate. A parameter for grasping a state of the HC adsorbent 7 is corrected. The state, such as a deteriorated state or the like, of a hydrocarbon adsorbent (HC adsorbent) is properly monitored while compensating for the effect of the characteristic change of the humidity sensor and the effect of variations of the characteristics of individual units of the humidity sensor.

摘要翻译： 湿度传感器19的特征变化基于湿度传感器19的输出数据的过渡特性，相对于表示通过废气在HG吸附剂7供给的HG吸附剂7的积分的湿度的积分量的综合水分量数据 发动机1已开始运转。 用于获取HC吸附剂7的状态的参数被校正。 适当地监测烃类吸附剂（HC吸附剂）的劣化状态等的状态，同时补偿湿度传感器的特性变化的影响以及湿度的各个单位特性的变化的影响 传感器。

公开(公告)号：US07062968B2

公开(公告)日：2006-06-20

申请号：US10322470

申请日：2002-12-19

申请人： Masaki Ueno ,  Kei Machida ,  Tetsuo Endo ,  Hideharu Yamazaki

发明人： Masaki Ueno ,  Kei Machida ,  Tetsuo Endo ,  Hideharu Yamazaki

IPC分类号： G01N27/04

CPC分类号： F01N3/0835 ,  F01N3/0814 ,  F01N3/0878 ,  F01N3/101 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F02D41/1456 ,  F02D41/1494 ,  G01N27/121 ,  Y02T10/22

摘要： A temperature control apparatus for a humidity sensor is provided for preventing impurities from sticking on a sensor element, while protecting the sensor element from cracking due to the humidity sensor heated by a heater in the presence of condensation, to maintain a high detection accuracy of the humidity sensor. The temperature control apparatus is configured to control the temperature of a sensor element of a humidity sensor disposed in an exhaust passage of an internal combustion engine for detecting the humidity within the exhaust passage. The temperature control apparatus comprises a heater for heating the sensor element, a temperature sensor for detecting the temperature of the sensor element, and an ECU for controlling a heating amount of the heater to bring the detected temperature of the sensor element to a first predetermined temperature during an operation of the internal combustion engine.

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：US06769417B1

公开(公告)日：2004-08-03

申请号：US10633570

申请日：2003-08-05

申请人： Masaki Ueno ,  Hideharu Yamazaki ,  Tetsuo Endo

发明人： Masaki Ueno ,  Hideharu Yamazaki ,  Tetsuo Endo

IPC分类号： F02M3302

CPC分类号： F01N13/009 ,  F01N3/0814 ,  F01N3/0835 ,  F01N3/0878 ,  F01N11/00 ,  F01N2560/028 ,  F02D41/0235 ,  F02D41/1441 ,  F02D41/1459 ,  F02D41/1495 ,  F02D41/1496 ,  F02D2041/1472 ,  F02D2041/228 ,  F02M26/15 ,  Y02T10/20 ,  Y02T10/47

摘要： After an internal combustion engine 1 has started to operate, a changing timing is detected at which a humidity represented by the output signal of a humidity sensor 23 disposed downstream of a hydrocarbon adsorbent 12 changes to a tendency to monotonously increase from a low humidity to a high humidity. Data representing a total amount of moisture carried by an exhaust gas emitted by the internal combustion engine 1 to the hydrocarbon adsorbent 12 up to the changing timing is acquired as a deterioration evaluating parameter. The deteriorated state of the hydrocarbon adsorbent is evaluated based on the deterioration evaluating parameter. The changing timing is detected as a timing at which the relative humidity represented by the output signal of the humidity sensor 23 has changed from a low humidity to a high humidity by a preset value. The preset value is variably set in order to compensate for characteristic changes of the humidity sensor 23 and variations of individual humidity sensors. The deteriorated state of the hydrocarbon adsorbent can thus adequately be monitored while compensating for the characteristic changes of the humidity sensor and the variations of individual humidity sensors.

摘要翻译： 在内燃机1开始运行之后，检测出由位于碳氢化合物吸附剂12的下游侧的湿度传感器23的输出信号所表示的湿度变化为从低湿度向单调增加的趋势的变更时刻 高湿度 获取表示由内燃机1向碳氢化合物吸附剂12排出的废气在变更时刻所携带的水分总量的数据作为劣化评价参数。 基于劣化评价参数来评价烃吸附剂的劣化状态。 作为将由湿度传感器23的输出信号表示的相对湿度从低湿度变为高湿度的预定值的时刻，检测出变更时刻。 为了补偿湿度传感器23的特性变化和各个湿度传感器的变化，可以设定预设值。 因此可以充分监测烃吸附剂的劣化状态，同时补偿湿度传感器的特性变化和各个湿度传感器的变化。

公开(公告)号：US06729121B2

公开(公告)日：2004-05-04

申请号：US10234247

申请日：2002-09-05

申请人： Masahiro Sato ,  Takashi Haga ,  Norihito Watanabe ,  Kenji Abe ,  Tetsuo Endo

发明人： Masahiro Sato ,  Takashi Haga ,  Norihito Watanabe ,  Kenji Abe ,  Tetsuo Endo

IPC分类号： F01N300

CPC分类号： F01N3/0835 ,  F01N3/0814 ,  F01N3/0878 ,  F01N3/101 ,  F01N11/00 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2550/03 ,  F01N2560/028 ,  F02D41/0275 ,  F02D41/1446 ,  F02D41/1495 ,  F02D41/1496 ,  F02D2200/0418 ,  Y02T10/22 ,  Y02T10/47

摘要： An adsorbent deterioration determining apparatus can accurately determine a deterioration of an adsorbent in a relatively simple configuration. The adsorbent deterioration determining apparatus determines a deterioration of an adsorbent arranged in an exhaust system of an internal combustion engine for purifying exhaust gases. The adsorbent is capable of adsorbing hydrocarbons and moisture in exhaust gases. The adsorbent deterioration determining apparatus comprises a humidity sensor arranged at a location downstream of the adsorbent in the exhaust system for detecting the humidity of exhaust gases, and an ECU for determining a deterioration of the adsorbent in accordance with a detected output of the humidity sensor at the time a predetermined time has elapsed from a start of the internal combustion engine.

摘要翻译： 吸附剂劣化判定装置能够以比较简单的结构精确地确定吸附剂的劣化。 吸附剂劣化判定装置判定配置在用于净化废气的内燃机的排气系统中的吸附剂的劣化。 吸附剂能够吸附废气中的碳氢化合物和水分。 吸附剂劣化判定装置包括布置在排气系统中用于检测废气湿度的吸附剂下游位置的湿度传感器，以及用于根据湿度传感器的检测输出来确定吸附剂的劣化的ECU 从内燃机开始经过预定时间的时间。