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    • 2. 发明授权
    • Exhaust purification system for internal combustion engine and desulfurization method for the same
    • 内燃机排气净化系统和脱硫方法相同
    • US08528321B2
    • 2013-09-10
    • US12847841
    • 2010-07-30
    • Jin Ha LeeJin Woo ParkHyokyung LeeSang-Min LeeJun Sung Park
    • Jin Ha LeeJin Woo ParkHyokyung LeeSang-Min LeeJun Sung Park
    • F01N3/00F01N3/10F01N3/02
    • F01N3/2033F01N3/035F01N3/0885F01N9/002F01N2570/04F01N2900/1612Y02T10/26Y02T10/47
    • An exhaust purification system for an internal combustion engine, and a desulfurization method for the same, recovers purification performance of a denitrification catalyst by removing sulfur poisoned at the denitrification catalyst in an exhaust system. The exhaust purification system may include an exhaust pipe through which an exhaust gas flows, the exhaust gas being generated at the internal combustion engine having a first injector injecting a fuel to a combustion chamber, a second injector mounted at the exhaust pipe and additionally injecting the fuel, a particulate filter mounted at the exhaust pipe downstream of the second injector and filtering particulate matters (PM) in the exhaust gas, a denitrification catalyst mounted at the exhaust pipe downstream of the particulate filter and reducing nitrogen oxide contained in the exhaust gas, and a control portion performing desulfurization of the denitrification catalyst when a desulfurization entering condition and a desulfurization condition are satisfied during regenerating the particulate filter.
    • 用于内燃机的排气净化系统及其脱硫方法通过去除排气系统中脱氮催化剂中毒的硫来回收脱氮催化剂的净化性能。 排气净化系统可以包括废气流过的排气管,在内燃机处产生的废气具有将燃料喷射到燃烧室的第一喷射器,安装在排气管处的第二喷射器,另外喷射 燃料,安装在第二喷射器下游的排气管和排气中的过滤颗粒物质(PM)的微粒过滤器,安装在微粒过滤器下游的排气管处并且还原废气中包含的氮氧化物的脱氮催化剂, 以及在再生所述微粒过滤器期间满足脱硫进入条件和脱硫条件时,进行脱氮催化剂的脱硫的控制部。