-
公开(公告)号：US09297288B2
公开(公告)日：2016-03-29
申请号：US14232694
申请日：2011-12-16
IPC分类号： F01N3/00 , F01N3/20 , F01N3/10 , F01N3/22 , F02D41/02 , F02D41/14 , F01N13/00 , F01N3/30 , F02D41/12 , F01N3/08 , F01N11/00
CPC分类号： F01N3/20 , F01N3/0842 , F01N3/106 , F01N3/22 , F01N3/30 , F01N11/007 , F01N13/009 , F01N2550/03 , F01N2570/14 , F01N2570/16 , F01N2900/1624 , F02D41/0275 , F02D41/0295 , F02D41/126 , F02D41/1439 , F02D41/1456 , F02D2250/36 , Y02A50/2344 , Y02T10/47
摘要： Provided is an exhaust purification system for an internal combustion engine. The exhaust purification system comprising: a NOX purifying catalyst arranged in an exhaust passage of the internal combustion engine, wherein the NOX purifying catalyst comprises a base metal supported on a catalyst support; an oxygen sensor arranged at the downstream side of the NOX purifying catalyst in the exhaust passage; and an air-fuel, ratio control means for controlling the air-fuel ratio of exhaust gas flowing into the NOX purifying catalyst; wherein when the NOX purifying catalyst suffers from predetermined oxygen poisoning, the air-fuel ratio control means controls the air-fuel ratio of the exhaust gas, which flows into the NOX purifying catalyst, to a first air-fuel ratio wherein the first air-fuel ratio is richer than a theoretical air-fuel ratio, and then the air-fuel ratio control means switches the air-fuel ratio of the exhaust gas, which flows into the NOX purifying catalyst, to a second air-fuel ratio on the basis of an output value from the oxygen sensor wherein the second air-fuel ratio is leaner than the first air-fuel ratio.
摘要翻译： 提供了一种用于内燃机的排气净化系统。 所述排气净化系统包括：排出在所述内燃机的排气通路中的NO x净化催化剂，其中所述NO x净化催化剂包含负载在催化剂载体上的贱金属; 氧气传感器，其布置在排气通道中的NOx净化催化剂的下游侧; 以及空气燃料比率控制装置，用于控制流入NOX净化催化剂的废气的空燃比; 其特征在于，当所述NOx净化催化剂受到预定的氧中毒时，所述空燃比控制装置将流入所述NO x净化催化剂的排气的空燃比控制为第一空燃比， 燃料比比理论空燃比更浓，然后空燃比控制装置将流入NOX净化催化剂的废气的空燃比基于第二空燃比 来自氧传感器的输出值，其中第二空燃比比第一空燃比更稀。
-
公开(公告)号：US20140216013A1
公开(公告)日：2014-08-07
申请号：US14232694
申请日：2011-12-16
CPC分类号： F01N3/20 , F01N3/0842 , F01N3/106 , F01N3/22 , F01N3/30 , F01N11/007 , F01N13/009 , F01N2550/03 , F01N2570/14 , F01N2570/16 , F01N2900/1624 , F02D41/0275 , F02D41/0295 , F02D41/126 , F02D41/1439 , F02D41/1456 , F02D2250/36 , Y02A50/2344 , Y02T10/47
摘要： Provided is an exhaust purification system for an internal combustion engine. The exhaust purification system comprising: a NOX purifying catalyst arranged in an exhaust passage of the internal combustion engine, wherein the NOX purifying catalyst comprises a base metal supported on a catalyst support; an oxygen sensor arranged at the downstream side of the NOX purifying catalyst in the exhaust passage; and an air-fuel, ratio control means for controlling the air-fuel ratio of exhaust gas flowing into the NOX purifying catalyst; wherein when the NOX purifying catalyst suffers from predetermined oxygen poisoning, the air-fuel ratio control means controls the air-fuel ratio of the exhaust gas, which flows into the NOX purifying catalyst, to a first air-fuel ratio wherein the first air-fuel ratio is richer than a theoretical air-fuel ratio, and then the air-fuel ratio control means switches the air-fuel ratio of the exhaust gas, which flows into the NOX purifying catalyst, to a second air-fuel ratio on the basis of an output value from the oxygen sensor wherein the second air-fuel ratio is leaner than the first air-fuel ratio.
摘要翻译： 提供了一种用于内燃机的排气净化系统。 所述排气净化系统包括：排出在所述内燃机的排气通路中的NO x净化催化剂，其中所述NO x净化催化剂包含负载在催化剂载体上的贱金属; 氧气传感器，其布置在排气通道中的NOx净化催化剂的下游侧; 以及空气燃料比率控制装置，用于控制流入NOX净化催化剂的废气的空燃比; 其特征在于，当所述NOx净化催化剂受到预定的氧中毒时，所述空燃比控制装置将流入所述NO x净化催化剂的排气的空燃比控制为第一空燃比， 燃料比比理论空燃比更浓，然后空燃比控制装置将流入NOX净化催化剂的废气的空燃比基于第二空燃比 来自氧传感器的输出值，其中第二空燃比比第一空燃比更稀。
-
搜索结果
2 条记录 (耗时 0.009 秒)