基于催化反應動力學的三元催化轉(zhuǎn)化器工作效率溫度監(jiān)控數(shù)學模型研究.pdf

1、977937長安大學碩士學位論文指導教師姓名王生昌教授長安大學申請學位級別碩士學科名稱童墾苧墨墾塑墨壘論文提交日期z絲￡工論文答辯日期z業(yè)[生￡目蘭Z目學位論文評閱人：王秋平教授亟型鱟塾塾墼AbstractWithregulationsonvehicleexhaustsbecomeincreasinglystrict，developmentandapplicationofthethree—waycatalyticconverterhas

2、becomethefundamentalapproachtocontrolvehicleemissionsThematchinguseofthethree—waycatalyticconverterandtheelectronicfuelinjectionsystemreducesvehicleemissionsgreatlyandhasbeenoneofthemainmeasurestoeontro】thevehicleexhaust

3、sButwiththeincreaseofthethreewaycatalyticconverter’Sworktime，theconversionefficiencydescentsconstantlySohowtorealtimesupervisetheconversionefficiencyofthethree—waycatalyticconverterhasbecomeaproblemthatpeopleconcemedandr

4、esearchedThispaperintroducedthesystemstructure，thecatalyticreactionmechanismofthethree—waycatalyticconverterindetail，andanalyzedthefactorsinfluencingtheconversionefficiency，theinvalidmechanismofthethree—waycatalyticconVe

5、rteLThenitputtheemphasisonthechemicalkineticsofthethreewaycatalyticconvenerandthephenomenaoftransferinthethreewaycatalyticconverterOnthebasisofaboveanalysis，thispaperstudiedandbuiltthematerialbalancemodel，theenergybalanc

6、emodelforthegasphaseandthematerialbalancemodel，theenergybalancemodelforthesolidphaserespectivelyThenthispaperderivedtherelationbetweentheconversionefficiencyandoutletinletairtemperaturedifferenceofthethreewaycatalyticcon

7、verterandbuiltthetemperaturemonitoringmodeltOmonitortheconversionefficiencyofthethree—waycatalyticconverterLastlythroughtheverifiedexperimentofthetemperaturemonitoringmodel，thispaperprovedthattheresultswhichwerecalculate

8、dwiththemonitoringmodelwereingoodquantitativeagreementwiththemeasuredresultsItisprovedthattheresaltisoftheoreticsenseandpracticalvalveKeywords：thethreewaycatalyticconverter；conversionefficiency；thematerialbalance；theener