首页>
外国专利>
catalytic aftertreatment system for a diesel engine exhaust gas, vehicle, and methods for maintaining activity and preventing the extinction of a diesel deoxidation catalyst
catalytic aftertreatment system for a diesel engine exhaust gas, vehicle, and methods for maintaining activity and preventing the extinction of a diesel deoxidation catalyst
展开▼
机译:用于柴油发动机排气的催化后处理系统,车辆以及保持活性和防止柴油脱氧催化剂熄灭的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A catalytic aftertreatment system for a diesel engine exhaust gas is described. The system comprises a diesel oxidation catalyst (DOC) and an aftertreatment device located downstream of the diesel oxidation catalyst (DOC), which aftertreatment device requires periodic heat treatment, and means to generate a temperature increase within the aftertreatment device, said diesel oxidation catalyst (DOC) comprising an upstream zone of length from 0.5 to 2 inches (12.7-50.81 mm) of higher oxidation activity for hydrocarbons (HC) than the remainder of the diesel oxidation catalyst (DOC).
展开▼