Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,8/21/2012,,‹#›,Click to Edit Title,1,AVLIndicomSetUp,(,AVL,燃烧分析,设,设置),Equipment &set-up of AVL Indicom systemforcombustionmeasurement,(,AVL,燃烧分析,的,的基本设,置,置),Angle encoder connection,(校标仪,安,安装),CylinderPressure transducermounting and set-up(,压力传感,器,器及设置,),Ignitionsignalset-up,(点火信,号,号设置),IndiComMeasurements,(采样),IndiComResults,(,采,采,样,样,结,结,果,果,),),IndiComuseforenginecalibration,(,在,在,台,台,架,架,标,标,定,定,的,的,应,应,用,用,),),2,EngineGeometryData,(,发,发,动,动,机,机,机,机,械,械,参,参,数,数,),),Type(,类,型,型,)strokes/cycle(,冲,程,程,)stroke,(,缸,缸,径,径,),),conrod(,活,塞,塞,连,连,杆,杆,中,中,心,心,距,距,)bore(,行,程,程,)compression,(,压,压,缩,缩,比,比,),),polytropiccoefficient(,汽,油,油,1.32,,,柴,柴,油,油,1.37,,,直,直,喷,喷,1.35),。
点,火,火,顺,顺,序,序,及,及,转,转,角,角,3,AngleEncoder,(,较,较,标,标,仪,仪,),),安,装,装,要,要,求,求,:,:,和,和,皮,皮,带,带,轮,轮,的,的,同,同,心,心,度,度,不,不,大,大,于,于,0.02mm,4,AngleEncoder,(,较,较,标,标,仪,仪,),),设,置,置,或,或,者,者,选,选,择,择,较,较,标,标,仪,仪,类,类,型,型,Type,设,置,置,发,发,动,动,机,机,压,压,缩,缩,上,上,止,止,点,点,(,(,通,通,常,常,设,设,置,置,1,缸,压,压,缩,缩,上,上,止,止,点,点,),),5,AngleEncoderTDCDetermination,(,较,较,标,标,仪,仪,压,压,缩,缩,上,上,止,止,点,点,测,测,定,定,),),ConductTDCDeterminationat:,2000rpmWOT,(,Motored,),(,油,门,门,全,全,开,开,倒,倒,拖,拖,),CoolantTemp,(,水,水,温,温,),),=90,°,°C,OilTemp,(,油,油,温,温,),),=90,°,°C,,UseLossAngle=0.7,°,°CAfor,MotoredPressure.,,AVLTDCSensorisamore,AccurateMethod!,(,使,使,用,用,AVL,压,缩,缩,上,止,止,点,点,传,传,感,感,器,器,将,将,更,更,精,精,确,确,。
6,IndiComSignalSet-Up,(,信,信,号,号,设,设,置,置,),),7,ChargeAmplifier,(,信,信,号,号,放,放,大,大,器,器,),),8,PressureTransducers,(,压,压,力,力,传,传,感,感,器,器,),),Usesensitivityaccordingtopressurerange,(,压,压,力,力,变,变,化,化,敏,敏,感,感,度,度,),),20.70for100Barrange(Gasoline),(,汽,汽,油,油,机,机,),),20.55for250Barrange(Diesel),(,柴,柴,油,油,机,机,),),,PressureTransducermountedinthecylinderheadaremore,reliablethansparkplugtransducers(butmoredifficulttofit).,,9,ChargeAmplifierSet-up,(,放,放,大,大,器,器,设,设,置,置,),),10,CylinderPressureSet-up,(,绝,绝,对,对,压,压,力,力,设,设,置,置,),),由,于,于,此,此,类,类,型,型,压,压,力,力,传,传,感,感,器,器,只,只,能,能,测,测,量,量,压,压,力,力,的,的,变,变,化,化,值,值,,,,,而,而,不,不,能,能,直,直,接,接,测,测,量,量,出,出,压,压,力,力,的,的,绝,绝,对,对,值,值,,,,,因,因,此,此,按,按,图,图,示,示,设,设,置,置,零,零,位,位,修,修,正,正,(,(,zerolevelcorrection,),以,以,便,便,能,能,计,计,算,算,出,出,压,压,力,力,的,的,绝,绝,对,对,值,值,。
11,CylinderPressureSet-up,(,绝,绝,对,对,压,压,力,力,设,设,置,置,),),观,察,察,窗,窗,口,口,的,的,设,设,置,置,12,CylinderPressureSet-up,(,绝,绝,对,对,压,压,力,力,设,设,置,置,),),13,IgnitionSignalSet-up,(,点,点,火,火,信,信,号,号,设,设,置,置,),),直,接,接,从,从,点,点,火,火,线,线,圈,圈,和,和,ECU,连,接,接,线,线,上,上,取,取,点,点,火,火,信,信,号,号,设,置,置,当,当,电,电,压,压,下,下,降,降,到,到,多,多,少,少,V,时,火,火,花,花,塞,塞,点,点,火,火,如,如,1V,,,这,这,和,和,点,点,火,火,线,线,圈,圈,的,的,特,特,性,性,有,有,关,关,),),14,Ignition SignalSet-up,(点火信号,设,设置),设置点火信,号,号的工作范,围,围及观察窗,口,口15,Ignition SignalSet-up,(点火信号,设,设置),16,IndiCom Results,(采样结果,),),选择要测量,和,和计算的参,数,数,17,Pmax,(最大燃烧,压,压力),18,PMax,(最大燃烧,压,压力),19,IndicatedMeanEffectivePressure,(平均有效,燃,燃烧压力),平均有效燃,烧,烧压力,IMEP=,∮,∮pdv,,反应发动,机,机的做工能,力,力,,IMEP,越大,发动,机,机做工越多,。
20,IndicatedMeanEffectivePressure,(平均有效,燃,燃烧压力),21,HeatRelease,(热量释放,),),热量释放(,燃,燃油燃烧),一,一般测量,AI10%,,,AI50%,AI75%,AI90%,时的曲轴转,角,角22,HeatRelease,(热量释放,),),23,HeatRelease,24,Knock,(爆震),爆震采样时,间,间≤,0.1DC,才能有效观,测,测到爆震25,Knock,设置爆震定,义,义,即什么,情,情况下为一,次,次爆震26,Knock,27,Ignition Results,(点火角采,样,样结果),28,Ignition Results,29,LogPLogVDiagram,(,PV,图),发动机标定,常,常用参数:,1,、,MBF50,(也可用,AI50,),发动机,在,在最佳点火,角,角时(,MBT,),MBF50=8±1,°,°ATDC,(受爆震影,响,响除外)2,、,COV IMEP,反应发动机,的,的燃烧稳定,性,性,一般要,求,求,COV IMEP<3%,,放宽条件,COV IMEP<5%,COV IMEP,越大,发动,机,机燃烧越不,稳,稳定,震动,越,越大。
3,、,LNV IMEP,为,N,个循环的最,小,小,IMEP,当小于,80%,时发动机有,失,失火(怠速,除,除外)4,、,Pmax_2sigma,,在应用中,主,主要应用于,判,判断活塞的,承,承受力,活,塞,塞设计最大,承,承受压力,> Pmax_2sigma (Pmax_2sigma=Pmax.av+2Pmax.st,(,Pmax.av,为,PmaxN(N=300),个循环的平,均,均值,,Pmax.st,为,PmaxN,个循环的标,准,准差),5,、,KP_PK,爆震压力,,爆,爆震标定时,用,用来判断爆,震,震的强弱6,、,KP_EFRQ,爆震频率,,爆,爆震标定时,用,用来判断爆,震,震的频度8/21/2012,30,IndiCom use forengine calibration,(在台架标,定,定的应用),31,Thermodynamic Correction,Ref:AVL IndiCom User Manual,32,Thermodynamic Correction,演讲完毕,,谢,谢谢观看!,。