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    • 10. 发明授权
    • Engine-driven vehicle with exhaust emission control
    • 具有废气排放控制的发动机驱动车辆
    • US07877984B2
    • 2011-02-01
    • US11577199
    • 2005-10-12
    • Andreas HinzLennart Andersson
    • Andreas HinzLennart Andersson
    • F01N3/00
    • F01N3/206B01D53/9431B01D2251/208F01N3/035F01N3/0835F01N3/106F01N13/009F01N13/0097F01N2570/14F01N2610/03F02D41/025F02D41/405Y02A50/2322Y02T10/26Y02T10/44
    • A method and an arrangement are provided for maintaining the oxidation of NO to NO2 in an oxidation catalytic converter arranged in a vehicle, the vehicle including an internal combustion engine which in operation emits exhaust gases to an exhaust gas after treatment system including the oxidation catalytic converter. A predetermined quantity of hydrocarbon is delivered to the exhaust gas aftertreatment system or the engine over at least one predetermined time interval for the purpose of maintaining the working temperature or regenerating an exhaust gas aftertreatment unit. The quantity of hydrocarbon is delivered to the exhaust gas aftertreatment system or to the engine through an injection with at least one predetermined fragmentation frequency and an injection period in order to maintain an NO2 production in the exhaust gas aftertreatment system that prevailed immediately prior to said time interval for the hydrocarbon injection.
    • 提供了一种在布置在车辆中的氧化催化转化器中维持NO至NO2的氧化的方法和装置,该车辆包括内燃机,该内燃机在运行时将废气排放到包括氧化催化转化器 。 为了维持工作温度或再生废气后处理单元,将预定量的烃输送到排气后处理系统或发动机至少一个预定的时间间隔。 碳氢化合物的量通过具有至少一个预定的分段频率和喷射周期的喷射被输送到废气后处理系统或发动机,以便在紧接在所述时间之前的排气后处理系统中保持NO 2产生 烃注入间隔。