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    • 26. 发明公开
    • 내연 기관의 배기 정화 장치의 고장 진단 장치
    • 用于内燃机排气净化器的诊断装置
    • KR1020070093872A
    • 2007-09-19
    • KR1020070024741
    • 2007-03-14
    • 닛산 지도우샤 가부시키가이샤
    • 구보겐고니시자와기미요시이선기사또오겐이찌아까바모또하루
    • F01N3/20F01N3/08F01N3/021
    • F01N3/2053F01N3/101F01N9/00F01N11/007F01N13/009F01N13/0093F01N2550/10F01N2560/025F01N2560/14F02D41/1495Y02A50/2324Y02T10/22Y02T10/47
    • A diagnosing apparatus for an exhaust gas purifier of an internal combustion engine is provided to diagnose leakage of a closing unit by using an air/fuel ratio detection unit to control the internal combustion engine. A diagnosing apparatus for an exhaust gas purifier of an internal combustion engine includes a main passage(3), a main catalyst converter(4), a bypass passage(7), a bypass catalyst converter(8), a closing unit, a first air/fuel ratio detection unit, a second air/fuel ratio detection unit, and a controller. The main passage is connected to the internal combustion engine. The main catalyst converter is installed in the main passage. The bypass passage bypasses the main passage. The bypass catalyst converter is installed in the bypass passage. The closing unit closes the main passage in a main passage section bypassed to the bypass passage. The first air/fuel ratio detection unit detects the air/fuel ratio of exhaust gas flowing through the bypass passage. The second air/fuel ratio detection unit detects the air/fuel ratio of the exhaust gas introduced into the main catalyst converter. The controller is connected to the first and second air/fuel ration detection units.
    • 提供一种内燃机的排气净化器的诊断装置,用于通过使用空燃比检测单元来诊断关闭单元的泄漏,以控制内燃机。 一种用于内燃机的排气净化器的诊断装置,包括主通道(3),主催化剂转换器(4),旁通通道(7),旁通催化转换器(8),关闭单元,第一 空气/燃料比检测单元,第二空气/燃料比检测单元和控制器。 主通道连接到内燃机。 主催化剂转换器安装在主通道中。 旁路通道绕过主通道。 旁路催化转化器安装在旁通通道中。 关闭单元关闭旁通到旁路通道的主通道中的主通道。 第一空气/燃料比检测单元检测流过旁路通道的废气的空燃比。 第二空气/燃料比检测单元检测引入主催化剂转化器的排气的空燃比。 控制器连接到第一和第二空气/燃料配给检测单元。
    • 28. 发明授权
    • 내연 기관의 배기 정화 장치
    • 내연기관의배기정화장치
    • KR100375846B1
    • 2003-03-15
    • KR1020000050299
    • 2000-08-29
    • 미쓰비시 지도샤 고교(주)
    • 다무라야스키나카야마오사무와타나베데츠야가와시마가즈히토
    • F01N3/10
    • F01N3/0842F01N3/0814F01N3/101F01N11/00F01N11/002F01N13/009F01N13/0093F01N13/0097F01N2550/02F01N2550/03F01N2560/026F02D41/0235F02D41/0275F02D41/1446F02D2200/0804Y02T10/22Y02T10/47
    • An exhaust emission control device of an internal combustion engine (1), which purifies exhaust gas exhausted from the internal combustion engine (1), comprises: a catalyst device (13) composed of a three way catalyst (32,34) for purifying harmful substance in the exhaust gas when an exhaust air-fuel ratio is substantially stoichiometrical and an NOx catalyst (33) 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 (13) being provided in an exhaust passage (11) of the internal combustion engine (1); catalyst deterioration determination means (S1,S3,S15,S17) for determining deterioration state of the catalyst device (13), the deterioration resulting from at least temperature; and control means (31,S4,S16,S18) for deteriorating exhaust gas components flowing into the catalyst device (13) much more than exhaust gas components flowing into the catalyst device (13) when an air-fuel ratio of a mixture supplied to the internal combustion engine (1) is substantially stoichiometrical, if the catalyst deterioration determination means (S1,S3,S15,S17) determines that the catalyst device (13) is in a predetermined deterioration state. The deterioration of an NOx absorbing function of the NOx catalyst (33) results from at least the destabilization of absorbing material in the NOx catalyst (33), which is caused by the rise in the temperature. Thus, if the catalyst deterioration determination means (S1,S3,S15,S17) determines that the catalyst device (13) is in the predetermined deterioration state, the exhaust gas components flowing into the catalyst device (13) are deteriorated much more than the exhaust gas components flowing into the catalyst device (13) when the air-fuel ratio of the mixture supplied to the internal combustion engine (1) 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 (13), and prevents the deterioration of an exhaust gas characteristic and the increase in cost.
    • 内燃发动机(1),其净化从内燃机排出的排气的排气净化装置(1),包括: - 用于净化有害三元催化剂(32,34)构成的催化剂装置(13) 物质时的排气空燃比是基本上化学计量的废气中,并且具有在废气中吸收的NOx,当空气 - 燃料比大于到接近贫空气 - 燃料比的函数的NOx催化剂(33) 化学计量空燃比,所述催化剂装置(13)设置在所述内燃机(1)的排气通道(11)中; 催化剂劣化判定装置(S1,S3,S15,S17),用于判定催化剂装置(13)的劣化状态,至少由温度引起的劣化; 和控制装置(31,S4,S16,S18),用于恶化流入到催化剂装置(13)比流入供给到混合物的空气 - 燃料比时,催化剂装置(13)的排气成分得多的排气成分 如果催化剂劣化确定装置(S1,S3,S15,S17)确定催化剂装置(13)处于预定劣化状态,则内燃机(1)基本上是化学计量的。 NOx催化剂(33)的NOx吸收功能的恶化至少是由于温度升高引起的NOx催化剂(33)中的吸收材料的不稳定化而导致的。 因此,如果催化剂劣化判定装置(S1,S3,S15,S17)判定催化剂装置(13)处于预定劣化状态,则流入催化剂装置(13)的排气成分比 当供应给内燃机(1)的混合物的空燃比基本上为化学计量时,排气成分流入催化剂装置(13)。 因此,CO 2,H 2,NO x,O 2,THC等被提供给吸收材料,从而使吸收材料稳定为碳酸盐,亚硝酸盐或酸氧化物。 这可以防止热量变质。 这延长了催化剂装置(13)的耐热寿命,并且防止了废气特性的恶化和成本的增加。 <图像>
    • 29. 实用新型
    • 폼부재가 내삽된 삼원촉매전환장치
    • 三通催化转换器是一个模板构件插
    • KR2019980048776U
    • 1998-09-25
    • KR2019960061941
    • 1996-12-30
    • 대우자동차 주식회사고등기술연구원연구조합
    • 양기일
    • F01N3/28
    • F01N3/28F01N3/101F01N2470/02
    • 본고안은배기가스파이프와촉매수단의사이에다공질의폼부재가삽입됨으로써그 정화성능이증대되도록된 폼부재가내삽된삼원촉매전환장치에관한것으로, 고밀도의실뭉치또는솜과함께촉매제가하우징의내부에삽입되어있는자동차의삼원촉매전환장치에있어서, 배기가스가외부로확산되도록다수개의배출구멍(4)이형성된배기파이프(3)와, 상기배기파이프(3)의외주연을따라감싸며형성되며다공질의재질로형성된폼부재(11)와, 상기하우징(12)과상기폼부재(11) 사이에제공되는촉매수단(13)이구비되어, 배기가스와촉매수단간의접촉면적이극대화됨으로써, 배기가스의유해성분이삼원촉매장치내의촉매수단으로골고루흡수될수있게되었다. 따라서, 삼원촉매장치의배기가스정화용량의증대및 그사용에따른수명도연장되는잇점이있다.
    • 的排气的内部纸张,由此在管和催化剂之间的多孔插入物的泡沫构件意味着净化性能涉及所述泡沫构件,以增加内插三元催化转化器,催化剂与所述纱线束或棉壳体的高密度 在车辆的三元催化转换器被插入其中时,废气与若干使得扩散到出口孔的外部(4)释放所述排气管3,在排气管(3)上形成沿令人惊奇的外围周围 和多孔的材料形成的模板构件11,壳体12和模板构件催化剂装置(13)是两个非11之间,从而最大化具有废气之间的表面接触,并在催化剂装置中,排气 分钟的危害成为被均匀地吸收由催化剂在三元催化剂设备装置。 因此,在寿命的增加,也是有利的是,根据其使用的三元催化剂装置的排气净化能力的延伸。