%0 Journal Article
%T ComputationalandexperimentalstudyonTRcombustionsystemofdiesel
%A 何旭
%A 刘卫国
%A 高希彦
%A 廖春明
%A 杨德胜
%J 大连理工大学学报
%P 185-192
%D 2008
%R 10.7511/dllgxb200802006
%X Anewcombustionsystemappliedinthe135-typedieselengine\_TR(Three-Rapidity),wasmodifiedfromdeepcaveωcombustionchamberwithanorientedarcinthemiddleofchamberwall,andperfectlyfittoanozzlewithorificesinconicsectionplusorificeinthecenter.Three-dimensionalnumericalsimulationwascompletedandcomparedbetweenTRcombustionsystemandoriginal135dieselenginecombustionsystemin50%loadbySTAR-CD.TheresultsshowthatinTRcombustionsystem,fuelignitionlocationisnearTDC,andpremixcombustionproportionincreases.Theorientedarc,contractedcaveandcentricspraycontributetoenhancingairflow,makingmorereasonablefueldistributionandformingmorehomogeneousmixture.Theusageofairinchamberiseffectivelyincreasedandheatlossfromthechamberwallisobviouslydecreased.Thecoldstartperformanceoftheengineisalsoimproved.AperformancetestonTRcombustionsystemwasmadeona135-typedieselengine.TheresultsdemonstratethatTRhasbetterexhaustsmokethantheoriginalengine.Atthelowandmoderateload,NOxemissionofTRcombustionsystemislessthantheoriginalsystem,butmoreinhighloadcondition,whichcanbesolvedbydelayingfuelspraytiming.TRcombustionhasmuchpotentialtoimproveemissionwithlessstructuralchangeoftheoriginalengine.
%K diesel
%K combustionchamber
%K numericalsimulation
%K spray
%U http://press.dlut.edu.cn/ch/reader/view_abstract.aspx?file_no=20080206&flag=1