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,intakeheating
2、andpressurizingtechnology,improvethemixtureincylindertemperatureandpressure,andthespontaneouscombustionofmixedgascompressor.Apluralityofignitionkernelisformedinthecylinder,effectivelymaintainthestabilityofflamecombustion,andreduceplantflamepropagationdist
3、anceandthecombustionduration.Theburningrateitisonlyrelatedwithchemicalreactionkineticsofitself.ThecharacteristicsofdieselHCCIcombustionTherealizationofdieselHCCIcombustiontoface,facingtwodifficulties:oneisthedieseloilofhighviscosity,lowvolatility.Itisdiff
4、iculttoformahomogeneousmixture;twoisadieselisashighassixteenoctanefuel,pronetospontaneouscombustionatlowtemperaturereaction,thecombustionspeedcontroldifficultyofhomogeneousmixture,easycauseroughburning.DieselHCCIcombustionisalsooccursinmanypoints,thereisn
5、oobviousflame,combustionreactionisrapid,thecombustiontemperatureislowandthedistributionisuniform,onlylowproductionofNOxandPM,withhighthermalefficiencyatlowloads.Butthetraditionaldieselenginewithhighpressureinjectionformingnonuniformlymixedgasdiffusioncomb
6、ustion,gasmixtureandtemperaturedistributionisveryuneven,inthediffusionflameshell7coffeeChenshovelstudentNOx,internalhighstainlesshypoxiahouseholdsstudentPmorethan3,theinfluencefactorsofdieselHOClcombustionmode3,effectof3kindsofmixedgas!Theformationofdiese
7、lHCCIcombustion.HomogeneousmixtureformationistoachievethefirststepofHCCIcombustioncontrol,includingtheinternationaluseofdieselhomogeneouspremixedgas:inletcylinderexternalpremixed,earlyincylinderinjectionandlateinjection.CylinderpremixedHCCIThatis,thediese
8、lspraypeopleintakepipeintheintakestroke,andairmixtureformationofpremixedgas.Usingaportinjection,tostrengthenthemixtureformationbyintakeswirl,istoimprovethemixtureuniformityofarelativelysimplemethod.3,1,2earlyincylin
