资源描述：
《均质混合气压缩着火(hcci)技术解析 homogeneous charge compression》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、均质混合气压缩着火(HCCI)技术解析HomogeneouschargecompressionignitiontechnologyofshrinkageTheHCCIenginelikethetraditionalgasolineenginethat,mixedgassuctionuniform,butwithoutthesparkplugignition,butbyincreasingthecompressionratio,theexhaustgasrecirculation,intakeheatingandpressurizingtechnology,improvethemixture
2、incylindertemperatureandpressure,andthespontaneouscombustionofmixedgascompressor.Apluralityofignitionkernelisformedinthecylinder,effectivelymaintainthestabilityofflamecombustion,andreduceplantflamepropagationdistanceandthecombustionduration.Theburningrateitisonlyrelatedwithchemicalreactionkinetics
3、ofitself.ThecharacteristicsofdieselHCCIcombustionTherealizationofdieselHCCIcombustiontoface,facingtwodifficulties:oneisthedieseloilofhighviscosity,lowvolatility.Itisdifficulttoformahomogeneousmixture;twoisadieselisashighassixteenoctanefuel,pronetospontaneouscombustionatlowtemperaturereaction,theco
4、mbustionspeedcontroldifficultyofhomogeneousmixture,easycauseroughburning.DieselHCCIcombustionisalsooccursinmanypoints,thereisnoobviousflame,combustionreactionisrapid,thecombustiontemperatureislowandthedistributionisuniform,onlylowproductionofNOxandPM,withhighthermalefficiencyatlowloads.Butthetradi
5、tionaldieselenginewithhighpressureinjectionformingnonuniformlymixedgasdiffusioncombustion,gasmixtureandtemperaturedistributionisveryuneven,inthediffusionflameshell7coffeeChenshovelstudentNOx,internalhighstainlesshypoxiahouseholdsstudentPmorethan3,theinfluencefactorsofdieselHOClcombustionmode3,effe
6、ctof3kindsofmixedgas!TheformationofdieselHCCIcombustion.HomogeneousmixtureformationistoachievethefirststepofHCCIcombustioncontrol,includingtheinternationaluseofdieselhomogeneouspremixedgas:inletcylinderexternalpremixed,earlyincylinderinjectionandlateinjection.CylinderpremixedHCCIThatis,thedieselsp
7、raypeopleintakepipeintheintakestroke,andairmixtureformationofpremixedgas.Usingaportinjection,tostrengthenthemixtureformationbyintakeswirl,istoimprovethemixtureuniformityofarelativelysimplemethod.3,1,2earlyincylin
