专利名称：Selective catalytic reduction system
发明人：Leo Shead,Alexis Eden,Ronald Silver
申请号：US16463612
申请日：20171211
公开号：US11105236B2
公开日：借口英文
成都翻译公司
20210831
日本人不知道的日语>幼儿英语故事
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中秋 英语专利附图：
摘要：A method of treating exhaust gas in an exhaust passage using a lective
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richard schiffcatalytic reduction system is provided. The system compris a hydrolysis catalyst in the passage upstream of a SCR catalyst, and a diel exhaust fluid (DEF) dosing unit for injecting DEF onto the hydrolysis catalyst at a variable DEF dosing rate. The method
compris the steps of predicting an initial DEF dosing rate for converting all nitrogen oxide (NOx) contained in the exhaust gas, and estimating an amount of ammonia stored on the SCR catalyst. The method further compris the steps of measuring a NOx conversion rate for the system, and adjusting the initial DEF dosing rate bad upon the ammonia storage estimate and the measured NOx conversion rate to produce a first adjusted DEF dosing rate. An amount of ammonia-equivalent stored on the hydrolysis catalyst is then estimated, and the first adjusted DEF dosing rate is adjusted bad upon the ammonia-equivalent storage estimate to produce a cond adjusted DEF dosing rate. DEF is then injected at the cond adjusted DEF dosing rate.
申请人：Perkins Engines Company Limited
汉尼拔 美剧地址：Peterborough GB上海华育中学
国籍：GB
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