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：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：US06641303B2

公开(公告)日：2003-11-04

申请号：US10231241

申请日：2002-08-30

申请人： Hideharu Yamazaki ,  Tadashi Sato ,  Takashi Haga ,  Yasuyuki Miyahara ,  Masaki Ueno ,  Kei Machida

发明人： Hideharu Yamazaki ,  Tadashi Sato ,  Takashi Haga ,  Yasuyuki Miyahara ,  Masaki Ueno ,  Kei Machida

IPC分类号： G01K1300

CPC分类号： F01N3/0835 ,  F01N3/0814 ,  F01N3/0878 ,  F01N3/2053 ,  F01N11/00 ,  F01N2550/03 ,  F01N2560/028 ,  F01N2900/0422 ,  F02D41/1444 ,  F02D41/1456 ,  F02D41/1494 ,  F02D41/222 ,  F02D2200/0418 ,  G01N27/121 ,  Y02T10/40 ,  Y02T10/47

摘要： There is provided a temperature control system for a humidity sensor, which is capable of eliminating impurities attached to a sensor element of the sensor efficiently and sufficiently while preventing the sensor element from being cracked due to heat generated by a heater in a state of condensation formed thereon, and suppressing attachment of impurities to the sensor element, thereby making it possible to preserve an excellent detection accuracy of the humidity sensor. The temperature control system controls the temperature of the sensor element of the humidity sensor arranged in an exhaust pipe for detecting humidity within the exhaust pipe. A heater heats the sensor element. The temperature of the sensor element is detected. When the detected temperature of the sensor element is higher than a predetermined temperature, said heater is operated.

摘要翻译： 提供了一种用于湿度传感器的温度控制系统，其能够有效且充分地消除附着在传感器元件上的杂质，同时防止传感器元件由于在冷凝状态下由加热器产生的热而破裂 并且抑制杂质与传感器元件的附着，从而能够保持湿度传感器的良好的检测精度。 温度控制系统控制布置在用于检测排气管内的湿度的排气管中的湿度传感器的传感器元件的温度。 加热器加热传感器元件。 检测传感器元件的温度。 当传感器元件的检测温度高于预定温度时，操作所述加热器。

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：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：US06823722B2

公开(公告)日：2004-11-30

申请号：US10290215

申请日：2002-11-08

申请人： Hideharu Yamazaki ,  Kei Machida ,  Masaki Ueno

发明人： Hideharu Yamazaki ,  Kei Machida ,  Masaki Ueno

IPC分类号： G01N502

CPC分类号： F01N3/0835 ,  F01N3/0814 ,  F01N3/0878 ,  F01N3/101 ,  F01N11/00 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/03 ,  F02D41/064 ,  F02D41/1456 ,  F02D41/1494 ,  F02D41/1495 ,  F02D2200/0414 ,  F02D2200/0418 ,  Y02T10/22 ,  Y02T10/47

摘要： An adsorbent state determining apparatus is provided for accurately determining the state of an adsorbent including a deterioration while ensuring elimination of the influence of impurities sticking on a sensor element of a humidity sensor. The adsorbent state determining apparatus determines the state of an adsorbent disposed in an exhaust system of an internal combustion engine for purifying exhaust gases. The adsorbent is capable of adsorbing hydrocarbons and moisture within exhaust gases. The adsorbent state determining apparatus comprises a humidity sensor disposed near the adsorbent in the exhaust system for detecting a humidity of exhaust gases; a heater for executing cleaning for removing impurities sticking on a sensor element of the humidity sensor; and an ECU for determining whether or not the heater has completed the cleaning, and for determining the state of the adsorbent in accordance with the humidity of exhaust gases detected by the humidity sensor when the ECU determines that the cleaning is completed.

摘要翻译： 提供了一种吸附剂状态确定装置，用于在确保消除粘附在湿度传感器的传感器元件上的杂质的影响的同时精确地确定包含劣化的吸附剂的状态。 吸附剂状态确定装置确定用于净化废气的内燃机的排气系统中的吸附剂的状态。 吸附剂能够吸附废气中的碳氢化合物和水分。 吸附剂状态确定装置包括设置在排气系统中的吸附剂附近的用于检测废气湿度的湿度传感器; 用于执行清洁以去除粘附在湿度传感器的传感器元件上的杂质的加热器; 以及ECU，用于确定加热器是否已经完成了清洁，并且用于当ECU确定清洁完成时，根据湿度传感器检测到的废气的湿度确定吸附剂的状态。

公开(公告)号：US06860143B2

公开(公告)日：2005-03-01

申请号：US10232723

申请日：2002-09-03

申请人： Hideharu Yamazaki ,  Masahiro Sato ,  Kei Machida ,  Takashi Haga ,  Masaki Ueno

发明人： Hideharu Yamazaki ,  Masahiro Sato ,  Kei Machida ,  Takashi Haga ,  Masaki Ueno

IPC分类号： G01N27/12 ,  B01D53/34 ,  B01D53/72 ,  F01N3/00 ,  F01N3/08 ,  F01N3/18 ,  F01N3/20 ,  F01N3/24 ,  F02D41/14 ,  F02D41/22 ,  F02D45/00 ,  G01N33/00 ,  G01M19/00 ,  F01N7/00 ,  G01N7/00 ,  G01N19/10

CPC分类号： F01N3/0835 ,  F01N3/0878 ,  F01N3/2053 ,  F01N2560/028 ,  F02D41/144 ,  F02D41/222 ,  F02D2200/0418 ,  G01N33/007 ,  Y02T10/20 ,  Y02T10/40

摘要： A state determination apparatus for a humidity sensor is provided for accurately determining the state of the humidity sensor, including the responsibility, from a result detected by the sensor itself. The state determining apparatus is configured to determine a humidity sensor arranged in an exhaust system of an internal combustion engine for detecting a humidity within an exhaust pipe. The apparatus comprises an ECU which determines whether or not the internal combustion engine is in a predetermined operating condition, calculates a change state parameter indicative of a change state of a value detected by the humidity sensor based on the detected value of the humidity sensor detected when the internal combustion engine is in the predetermined operating condition, and determines the state of the humidity sensor in accordance with the calculated change state parameter.

摘要翻译： 提供了一种用于湿度传感器的状态确定装置，用于根据由传感器本身检测到的结果来精确地确定包括责任在内的湿度传感器的状态。 状态确定装置被配置为确定布置在用于检测排气管内的湿度的内燃机的排气系统中的湿度传感器。 该装置包括ECU，其确定内燃机是否处于预定的运行状态，基于检测到的湿度传感器的检测值，计算表示由湿度传感器检测到的值的变化状态的变化状态参数， 内燃机处于规定的运行状态，根据计算出的变化状态参数来决定湿度传感器的状态。

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：US06758038B2

公开(公告)日：2004-07-06

申请号：US10233683

申请日：2002-09-04

申请人： Masaki Ueno ,  Yoshihisa Iwaki ,  Masahiro Sato ,  Hideharu Yamazaki

发明人： Masaki Ueno ,  Yoshihisa Iwaki ,  Masahiro Sato ,  Hideharu Yamazaki

IPC分类号： F01N300

CPC分类号： G01K7/42 ,  F02D41/024 ,  F02D41/047 ,  F02D41/1446 ,  F02D2041/0067 ,  F02D2200/0406 ,  F02D2200/0414 ,  F02D2200/0418 ,  F02D2200/0804 ,  G01K2205/04 ,  Y02T10/26

摘要： A temperature estimating apparatus for an internal combustion engine is provided for correctly calculating the temperature of an exhaust device even when the internal combustion engine is started under low temperature conditions. The temperature estimating apparatus comprises an ECU for estimating the temperature of a hydrocarbon adsorbent in an exhaust system of the internal combustion engine through calculations. The ECU calculates an estimated adsorbent temperature of the adsorbent in accordance with an engine rotational speed, an absolute intake pipe inner pressure, an engine water temperature, an intake temperature, and a detected humidity of exhaust gases. This calculation is started when condensation, which has occurred within an intake pipe, is eliminated.

摘要翻译： 内燃机的温度推定装置，即使内燃机在低温条件下起动，也能够正确地计算排气装置的温度。 温度推定装置包括ECU，用于通过计算来估计内燃机的排气系统中的烃吸附剂的温度。 ECU根据发动机转速，绝对进气管内压，发动机水温，进气温度和检测到的排气湿度来计算吸附剂的吸附剂的估计温度。 当进气管内发生的冷凝水被消除时，开始计算。