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《天然气掺氢发动机燃气供给系统设计与试验研究_张朝山.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第33卷第10期兵工学报Vol.33No.102012年10月ACTAARMAMENTARIIOct.2012天然气掺氢发动机燃气供给系统设计与试验研究1222222张朝山,熊树生,任晓帅,姚红,徐进,谢莲,刘震涛(1.浙江经济职业技术学院汽车技术学院,浙江杭州310018;2.浙江大学动力机械及车辆工程研究所,浙江杭州310027)摘要:提出了将滑动弧电解制氢装置应用到天然气发动机中,通过电解天然气制氢,轻松实现天然气(CNG)发动机到天然气掺氢(HCNG)发动机的改装。通过自制装置,进行了过量空气系数和点火提
2、前角与燃用不同掺氢比例的HCNG对发动机排放特性影响的试验研究。结果表明,发动机燃用HCNG,其HC和CO的排放都减少,NOx排放量增加,但随着过量空气系数的增加或点火提前角的减少,NOx排放会大大减少,排放性能得到优化。同时进行了体积掺氢比20%的HCNG和纯CNG外特性对比试验研究,结果表明,相比纯CNG,燃用掺氢20%HCNG后,其动力性变化不大,燃料消耗率却相应的减少,经济性得到改善。关键词:动力机械工程;天然气掺氢;滑动弧电解制氢;排放;掺氢比中图分类号:TK437文献标志码:A文章编号:1000-10
3、93(2012)10-1162-06DesignofHydrogenEnrichedCompressedNaturalGasEngineFuelSystemandTestResearch1222ZHANGChao-shan,XIONGShu-sheng,RENXiao-shuai,YAOHong,222XUJin,XIELian,LIUZhen-tao(1.AutomobileTechnologySchool,ZhejiangTechnicalInstituteofEconomics,Hangzhou310018
4、,Zhejiang,China;2.InstituteofPowerMachineryandVehicularEngineering,ZhejiangUniversity,Hangzhou310027,Zhejiang,China)Abstract:Thispaperputforwardadeviceinstalledintothefuelsystem,whichusedtheslidingelectricarctoelectrolyzethenaturalgastomakehydrogenandthenblen
5、dthemintothefuelpipeforfinalcom-bustion.Wecouldre-equipthecompressednaturalgas(CNG)enginetohydrogenenrichedcompressednaturalgas(HCNG)engineeasily.Thetestresearchoftheengineemissionscharacteristicsusingdiffer-enthydrogen-CNGratioswasconductedwhentheexcessairra
6、tiosandthesparkadvanceanglesweredif-ferent.TheresultsshowthatHCandCOemissionsofenginefueledwithHCNGreducewhenNOxemis-sionsincrease.TheNOxemissionsarereducedgreatlywiththeincreaseoftheexcessairratioorthede-creaseofthesparkadvanceangle.Comparativeexperimentsoft
7、heperformancecharacteristicsofengineburnedwithHCNGwhosevolumehydrogen-CNGratiowas20%andCNGwereconductedunderwideopenthrottleoperatingconditions.Theresultsshowthatthetorqueoutputisunchangedwhen20%HCNGisburnedcomparedwithCNGengine,butthefuelconsumptionisreduced
8、andthefueleconomyisim-proved.Keywords:powermachineryengineering;hydrogenenrichedcompressednaturalgas;slidingelectricarc;emission;hydrogenblendingratio收稿日期:2012-02-24基金项目:浙江省自然科学基金项目(Y1090
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