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    Exhaust emission control device of internal combustion engine
    4.
    发明授权
    Exhaust emission control device of internal combustion engine 有权

    公开(公告)号：US06463734B1

    公开(公告)日：2002-10-15

    申请号：US09651653

    申请日：2000-08-30

    申请人： Yasuki Tamura ,  Osamu Nakayama ,  Tetsuya Watanabe ,  Kazuhito Kawashima

    发明人： Yasuki Tamura ,  Osamu Nakayama ,  Tetsuya Watanabe ,  Kazuhito Kawashima

    IPC分类号： F01N300

    CPC分类号： F01N3/0842 ,  F01N3/0814 ,  F01N3/101 ,  F01N11/00 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2560/026 ,  F02D41/0235 ,  F02D41/0275 ,  F02D41/1446 ,  F02D2200/0804 ,  Y02T10/22 ,  Y02T10/47

    摘要： An exhaust emission control device of an internal combustion engine, which purifies exhaust gas exhausted from the internal combustion engine, comprises: a catalyst device composed of a three way catalyst for purifying harmful substance in the exhaust gas when an exhaust air-fuel ratio is substantially stoichiometrical and an NOx catalyst having a function of absorbing NOx in the exhaust gas when the air-fuel ratio is closer to a lean air-fuel ratio than to the stoichiometrical air-fuel ratio, the catalyst device being provided in an exhaust passage of the internal combustion engine; catalyst deterioration determination means for determining deterioration state of the catalyst device, the deterioration resulting from at least temperature; and control means for deteriorating exhaust gas components flowing into the catalyst device much more than exhaust gas components flowing into the catalyst device when an air-fuel ratio of a mixture supplied to the internal combustion engine is substantially stoichiometrical, if the catalyst deterioration determination means determines that the catalyst device is in a predetermined deterioration state. The deterioration of an NOx absorbing function of the NOx catalyst results from at least the destabilization of absorbing material in the NOx catalyst, which is caused by the rise in the temperature. Thus, if the catalyst deterioration determination means determines that the catalyst device is in the predetermined deterioration state, the exhaust gas components flowing into the catalyst device are deteriorated much more than the exhaust gas components flowing into the catalyst device when the air-fuel ratio of the mixture supplied to the internal combustion engine is substantially stoichiometrical. Therefore, CO, H2, NOx, O2, THC and the like are supplied to the absorbing material to thereby stabilize the absorbing material as carbonate, nitrite or acid oxide. This prevents the heat deterioration. This extends a heat-resisting life of the catalyst device, and prevents the deterioration of an exhaust gas characteristic and the increase in cost.

    Exhaust emission purifier
    5.
    发明授权
    Exhaust emission purifier 失效
    排气净化器

    公开(公告)号：US06558637B2

    公开(公告)日：2003-05-06

    申请号：US09832813

    申请日：2001-04-12

    申请人： Yasuki Tamura ,  Kazuo Koga ,  Kojiro Okada ,  Osamu Nakayama ,  Keisuke Kawamura ,  Kiyoshi Kawamura ,  Norihiro Hukuda

    发明人： Yasuki Tamura ,  Kazuo Koga ,  Kojiro Okada ,  Osamu Nakayama ,  Keisuke Kawamura ,  Kiyoshi Kawamura ,  Norihiro Hukuda

    IPC分类号： B01J1908

    CPC分类号： B01D53/9454 ,  F01N3/0892 ,  F01N3/20 ,  F01N3/2013 ,  F01N3/28 ,  Y02T10/22 ,  Y02T10/26

    摘要： An exhaust emission purifier includes a catalyst unit disposed in an exhaust pipe of an engine. Electrodes (reaction adjustment unit) are provided on a honeycomb carrier of the catalyst unit in a layered form in order to apply an electric field to the vicinity of the catalyst surface to thereby adjust the catalytic reaction. An ECU serves as a status detection unit to detect factors which affect the exhaust gas purifying performance of the catalyst unit (i.e., operating conditions), and serves as a control unit which controls the electric field applied by the electrodes, on the basis of the detected operating conditions.

    摘要翻译： 排气净化器包括设置在发动机的排气管内的催化剂单元。 在催化剂单元的蜂窝状载体上层叠形成电极（反应调整单元），以向催化剂表面附近施加电场，从而调节催化反应。 ECU用作状态检测单元，用于检测影响催化剂单元的排气净化性能的因素（即操作条件），并且作为控制单元，其控制由电极施加的电场，基于 检测到操作条件。

    Plasma type exhaust gas cleaning apparatus
    6.
    发明授权
    Plasma type exhaust gas cleaning apparatus 失效
    等离子体废气净化装置

    公开(公告)号：US06558636B2

    公开(公告)日：2003-05-06

    申请号：US09768258

    申请日：2001-01-25

    申请人： Yasuki Tamura ,  Kojiro Okada ,  Kazuo Koga ,  Osamu Nakayama ,  Keisuke Kawamura ,  Kiyoshi Kawamura

    发明人： Yasuki Tamura ,  Kojiro Okada ,  Kazuo Koga ,  Osamu Nakayama ,  Keisuke Kawamura ,  Kiyoshi Kawamura

    IPC分类号： B01J1908

    CPC分类号： B01D53/32 ,  F01N3/0892

    摘要： The present plasma type exhaust gas cleaning apparatus comprises a dielectric (5) arranged between a discharge electrode (7) and a ground electrode (8). The dielectric has a plurality of independent cavities (6) formed therein. The exhaust gas from combustion equipment (1) flows through the interiors of the plurality of independent cavities (6). Thus, in the plasma type exhaust gas cleaning apparatus, the discharge electrode (7) and the ground electrode (8) are securely partitioned by the cavities (6). When a voltage from a high voltage generator (9) is applied to between the discharge electrode (7) and the ground electrode (8), plasma resulting from corona discharges occurs in each individual cavity (6) without arising directly across the discharge electrode (7) and the ground electrode (8). The exhaust gas is thereby cleaned up.

    摘要翻译： 本发明的等离子体废气净化装置包括布置在放电电极（7）和接地电极（8）之间的电介质（5）。 电介质具有形成在其中的多个独立空腔（6）。 来自燃烧设备（1）的废气流过多个独立空腔（6）的内部。 因此，在等离子体型排气净化装置中，放电电极（7）和接地电极（8）被空腔（6）牢固地隔开。 当来自高电压发生器（9）的电压被施加到放电电极（7）和接地电极（8）之间时，由电晕放电产生的等离子体发生在每个单个空腔（6）中，而不会直接穿过放电电极 7）和接地电极（8）。 从而净化废气。

    Catalyst deterioration detecting apparatus
    7.
    发明授权
    Catalyst deterioration detecting apparatus 有权
    催化剂劣化检测装置

    公开(公告)号：US06892528B2

    公开(公告)日：2005-05-17

    申请号：US10672691

    申请日：2003-09-26

    申请人： Kojiro Okada ,  Yasuki Tamura ,  Kinichi Iwachido ,  Osamu Nakayama

    发明人： Kojiro Okada ,  Yasuki Tamura ,  Kinichi Iwachido ,  Osamu Nakayama

    IPC分类号： F01N3/20 ,  F01N3/10 ,  F01N11/00 ,  F01N13/02 ,  F01N3/00

    CPC分类号： F01N3/101 ,  F01N11/007 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/02 ,  Y02A50/2324 ,  Y02T10/22 ,  Y02T10/47

    摘要： A catalyst deterioration detecting apparatus aims at accurately determining whether or not a catalyst deteriorates even if a strict standard for catalyst deterioration is established. The catalyst deterioration detecting apparatus includes catalyst temperature sensing means for obtaining temperature of a catalyst, including ceria (CeO2) serving as an oxygen storage agent, and deterioration detecting means for detecting a degree of deterioration of the catalyst if the temperature is obtained by the catalyst temperature sensing means is equal to or higher than an activation temperature at which the catalyst is activated and is in a particular temperature range causing NOX conversion efficiency of the catalyst to decrease.

    摘要翻译： 催化剂劣化检测装置即使在确定催化剂劣化的严格标准的情况下，也能准确地判定催化剂是否劣化。 催化剂劣化检测装置包括用于获得催化剂的温度的催化剂温度检测装置，包括用作氧气储存剂的二氧化铈（CeO 2/2））和用于检测催化剂劣化程度的劣化检测装置 如果通过催化剂温度检测装置获得的温度等于或高于催化剂活化的活化温度并且在特定的温度范围内，使催化剂的NO x转化率降低 。

    Exhaust emission control device of internal combustion engine
    8.
    发明授权
    Exhaust emission control device of internal combustion engine 有权
    内燃机废气排放控制装置

    公开(公告)号：US06487851B1

    公开(公告)日：2002-12-03

    申请号：US09701972

    申请日：2000-12-06

    申请人： Kojiro Okada ,  Takashi Dogahara ,  Yasuki Tamura

    发明人： Kojiro Okada ,  Takashi Dogahara ,  Yasuki Tamura

    IPC分类号： F01N300

    CPC分类号： F01N9/005 ,  F01N3/0842 ,  F01N3/101 ,  F01N13/009 ,  F01N13/0093 ,  F01N2430/06 ,  F02D41/0275 ,  F02D41/1456 ,  F02D41/146 ,  F02D41/1463 ,  F02D41/405 ,  F02D2250/36 ,  Y02A50/2324 ,  Y02T10/22 ,  Y02T10/44 ,  Y02T10/47

    摘要： An NOx sensor 27 detects the concentration of NOx released from an occlusion type NOx catalyst 25 into the atmosphere. Based on the output of the NOx sensor 27, a total NOx discharge A is computed. When the total NOx discharge A reaches an NOx emission judgment amount A0, corresponding to an NOx emission judgment amount designated by NOx emission regulations, before a distance traveled C reaches a predetermined distance traveled C0, an exhaust air-fuel ratio is changed to a rich air-fuel ratio to release NOx from the occlusion type NOx catalyst 25 efficiently. Then, the exhaust air-fuel ratio is changed to a stoichiometric air-fuel ratio to purify and reduce NOx by a three-way catalyst function.

    摘要翻译： NOx传感器27检测从堵塞型NOx催化剂25释放到大气中的NOx浓度。 基于NOx传感器27的输出，计算出总的NOx排放量A. 当总NOx排放量A达到与NOx排放规定指定的NOx排放判定量相对应的NOx排放量判定量A0，在行驶距离C达到规定行驶距离C0之前，排气空燃比变为浓 空燃比有效地从堵塞型NOx催化剂25释放NOx。 然后，排气空燃比变为理论空燃比，通过三元催化剂功能净化和还原NOx。

    Exhaust emission control device of internal combustion engine
    9.
    发明申请
    Exhaust emission control device of internal combustion engine 有权

    公开(公告)号：US20070000482A1

    公开(公告)日：2007-01-04

    申请号：US10550520

    申请日：2003-10-17

    申请人： Yasuki Tamura ,  Kazuhito Kawashima ,  Hitoshi Toda

    发明人： Yasuki Tamura ,  Kazuhito Kawashima ,  Hitoshi Toda

    IPC分类号： F02D41/14

    CPC分类号： F02D41/1454

    摘要： The air/fuel ratio of exhaust flowing into a catalytic converter is forcibly modulated, between a lean air/fuel ratio leaner than a target average air/fuel ratio and a rich air/fuel ratio richer than the target average air/fuel ratio, with a specific period, a specific amplitude, a specific modulation ratio and a specific waveform. During the forcible modulation (S10, S12), the ratio of a time for which the output of an oxygen sensor is greater than a standard value Sb for the output set between the maximum and minimum values of the output (“rich” output time), or of a time for which it is smaller than the standard value Sb (“lean” output time), in a predetermined period of time, or a value correlating with this ratio is obtained (S14), and the air/fuel ratio of the exhaust is controlled on the basis of this ratio or the value correlating with this ratio (S16, S18).

    Exhaust emission control device of internal combustion engine
    10.
    发明授权
    Exhaust emission control device of internal combustion engine 有权
    内燃机废气排放控制装置

    公开(公告)号：US07275364B2

    公开(公告)日：2007-10-02

    申请号：US10550520

    申请日：2003-10-17

    申请人： Yasuki Tamura ,  Kazuhito Kawashima ,  Hitoshi Toda

    发明人： Yasuki Tamura ,  Kazuhito Kawashima ,  Hitoshi Toda

    IPC分类号： F01N3/00

    CPC分类号： F02D41/1454

    摘要： The air/fuel ratio of exhaust flowing into a catalytic converter is forcibly modulated, between a lean air/fuel ratio leaner than a target average air/fuel ratio and a rich air/fuel ratio richer than the target average air/fuel ratio, with a specific period, a specific amplitude, a specific modulation ratio and a specific waveform. During the forcible modulation (S10, S12), the ratio of a time for which the output of an oxygen sensor is greater than a standard value Sb for the output set between the maximum and minimum values of the output (“rich” output time), or of a time for which it is smaller than the standard value Sb (“lean” output time), in a predetermined period of time, or a value correlating with this ratio is obtained (S14), and the air/fuel ratio of the exhaust is controlled on the basis of this ratio or the value correlating with this ratio (S16, S18).

    摘要翻译： 流入催化转化器的排气的空气/燃料比在强于目标平均空气/燃料比的稀空气/燃料比和比目标平均空气/燃料比更浓的空气/燃料比之间被强制调制， 特定时间段，特定振幅，特定调制比和特定波形。 在强制调制（S 10，S 12）期间，氧传感器的输出的时间比输出的最大值和最小值之间的输出设定的标准值Sb大（“浓”输出 时间），或者在规定时间内小于标准值Sb（“瘦”输出时间）的时间，或与该比率相关的值（S14），空气/ 基于该比率或与该比率相关的值来控制排气的燃料比（S16，S18）。