AVL燃燒分析及在標(biāo)定的應(yīng)用培訓(xùn)課件

1AVLIndicomSetUp（AVL燃燒分析設(shè)置）Equipment&set-upofAVLIndicomsystemforcombustionmeasurement（AVL燃燒分析的基本設(shè)置）Angleencoderconnection（校標(biāo)儀安裝）CylinderPressuretransducermountingandset-up(壓力傳感器及設(shè)置)Ignitionsignalset-up（點(diǎn)火信號(hào)設(shè)置）IndiComMeasurements（采樣）IndiComResults（采樣結(jié)果）IndiComuseforenginecalibration（在臺(tái)架標(biāo)定的應(yīng)用）1AVLIndicomSetUp（AVL燃燒分析設(shè)置）E2EngineGeometryData（發(fā)動(dòng)機(jī)機(jī)械參數(shù)）Type(類型)strokes/cycle(沖程)stroke（缸徑）conrod(活塞連桿中心距)bore(行程)compression（壓縮比）polytropiccoefficient(汽油1.32，柴油1.37，直噴1.35)。點(diǎn)火順序及轉(zhuǎn)角。2EngineGeometryData（發(fā)動(dòng)機(jī)機(jī)械參數(shù)）3AngleEncoder（較標(biāo)儀）安裝要求：和皮帶輪的同心度不大于0.02mm3AngleEncoder（較標(biāo)儀）安裝要求：和皮帶輪的同4AngleEncoder

（較標(biāo)儀）設(shè)置或者選擇較標(biāo)儀類型Type。設(shè)置發(fā)動(dòng)機(jī)壓縮上止點(diǎn)（通常設(shè)置1缸壓縮上止點(diǎn)）4AngleEncoder（較標(biāo)儀）設(shè)置或者選擇較標(biāo)儀類5AngleEncoderTDCDetermination（較標(biāo)儀壓縮上止點(diǎn)測(cè)定）ConductTDCDeterminationat:2000rpmWOT（Motored）(油門(mén)全開(kāi)倒拖)CoolantTemp（水溫）=90°COilTemp（油溫）=90°CUseLossAngle=0.7°CAforMotoredPressure.AVLTDCSensorisamoreAccurateMethod!（使用AVL壓縮上止點(diǎn)傳感器將更精確。）5AngleEncoderTDCDeterminati6IndiComSignalSet-Up（信號(hào)設(shè)置）6IndiComSignalSet-Up（信號(hào)設(shè)置）7ChargeAmplifier（信號(hào)放大器）7ChargeAmplifier（信號(hào)放大器）8PressureTransducers（壓力傳感器）Usesensitivityaccordingtopressurerange（壓力變化敏感度）20.70for100Barrange(Gasoline)（汽油機(jī)）20.55for250Barrange(Diesel)（柴油機(jī)）PressureTransducermountedinthecylinderheadaremorereliablethansparkplugtransducers(butmoredifficulttofit).8PressureTransducers（壓力傳感器）Us9ChargeAmplifierSet-up（放大器設(shè)置）9ChargeAmplifierSet-up（放大器設(shè)置10CylinderPressureSet-up（絕對(duì)壓力設(shè)置）由于此類型壓力傳感器只能測(cè)量壓力的變化值，而不能直接測(cè)量出壓力的絕對(duì)值，因此按圖示設(shè)置零位修正（zerolevelcorrection）以便能計(jì)算出壓力的絕對(duì)值。10CylinderPressureSet-up（絕對(duì)壓11CylinderPressureSet-up

（絕對(duì)壓力設(shè)置）觀察窗口的設(shè)置11CylinderPressureSet-up（絕對(duì)12CylinderPressureSet-up

（絕對(duì)壓力設(shè)置）12CylinderPressureSet-up（絕對(duì)13IgnitionSignalSet-up（點(diǎn)火信號(hào)設(shè)置）直接從點(diǎn)火線圈和ECU連接線上取點(diǎn)火信號(hào)。設(shè)置當(dāng)電壓下降到多少V時(shí)火花塞點(diǎn)火。（如1V，這和點(diǎn)火線圈的特性有關(guān)）13IgnitionSignalSet-up（點(diǎn)火信號(hào)設(shè)14IgnitionSignalSet-up

（點(diǎn)火信號(hào)設(shè)置）設(shè)置點(diǎn)火信號(hào)的工作范圍及觀察窗口。14IgnitionSignalSet-up（點(diǎn)火信號(hào)15IgnitionSignalSet-up

（點(diǎn)火信號(hào)設(shè)置）15IgnitionSignalSet-up（點(diǎn)火信號(hào)16IndiComResults（采樣結(jié)果）選擇要測(cè)量和計(jì)算的參數(shù)16IndiComResults（采樣結(jié)果）選擇要測(cè)量和計(jì)17Pmax（最大燃燒壓力）17Pmax（最大燃燒壓力）18PMax

（最大燃燒壓力）18PMax（最大燃燒壓力）19IndicatedMeanEffectivePressure（平均有效燃燒壓力）平均有效燃燒壓力IMEP=∮pdv，反應(yīng)發(fā)動(dòng)機(jī)的做工能力，IMEP越大，發(fā)動(dòng)機(jī)做工越多。19IndicatedMeanEffectivePre20IndicatedMeanEffectivePressure

（平均有效燃燒壓力）20IndicatedMeanEffectivePre21HeatRelease（熱量釋放）熱量釋放（燃油燃燒）一般測(cè)量AI10%，AI50%,AI75%,AI90%時(shí)的曲軸轉(zhuǎn)角。21HeatRelease（熱量釋放）熱量釋放（燃油燃燒）22HeatRelease（熱量釋放）22HeatRelease（熱量釋放）23HeatRelease23HeatRelease24Knock（爆震）爆震采樣時(shí)間≤0.1DC才能有效觀測(cè)到爆震。24Knock（爆震）爆震采樣時(shí)間≤0.1DC才能有效觀測(cè)25Knock設(shè)置爆震定義，即什么情況下為一次爆震。25Knock設(shè)置爆震定義，即什么情況下為一次爆震。26Knock26Knock27IgnitionResults（點(diǎn)火角采樣結(jié)果）27IgnitionResults（點(diǎn)火角采樣結(jié)果）28IgnitionResults28IgnitionResults29LogPLogVDiagram（PV圖）29LogPLogVDiagram（PV圖）發(fā)動(dòng)機(jī)標(biāo)定常用參數(shù)：1、MBF50（也可用AI50），發(fā)動(dòng)機(jī)在最佳點(diǎn)火角時(shí)（MBT）MBF50=8±1°ATDC（受爆震影響除外）。2、COVIMEP反應(yīng)發(fā)動(dòng)機(jī)的燃燒穩(wěn)定性，一般要求COVIMEP<3%，放寬條件COVIMEP<5%。COVIMEP越大，發(fā)動(dòng)機(jī)燃燒越不穩(wěn)定，震動(dòng)越大。3、LNVIMEP為N個(gè)循環(huán)的最小IMEP當(dāng)小于80%時(shí)發(fā)動(dòng)機(jī)有失火（怠速除外）。4、Pmax_2sigma，在應(yīng)用中主要應(yīng)用于判斷活塞的承受力，活塞設(shè)計(jì)最大承受壓力>Pmax_2sigma(Pmax_2sigma=Pmax.av+2Pmax.st（Pmax.av為PmaxN(N=300)個(gè)循環(huán)的平均值，Pmax.st為PmaxN個(gè)循環(huán)的標(biāo)準(zhǔn)差）5、KP_PK爆震壓力，爆震標(biāo)定時(shí)用來(lái)判斷爆震的強(qiáng)弱。6、KP_EFRQ爆震頻率，爆震標(biāo)定時(shí)用來(lái)判斷爆震的頻度。8/21/201230IndiComuseforenginecalibration（在臺(tái)架標(biāo)定的應(yīng)用）發(fā)動(dòng)機(jī)標(biāo)定常用參數(shù)：8/21/201230IndiComu31ThermodynamicCorrectionRef:AVLIndiComUserManual31ThermodynamicCorrectionRef:32ThermodynamicCorrection32ThermodynamicCorrection演講完畢，謝謝觀看！演講完畢，謝謝觀看！34AVLIndicomSetUp（AVL燃燒分析設(shè)置）Equipment&set-upofAVLIndicomsystemforcombustionmeasurement（AVL燃燒分析的基本設(shè)置）Angleencoderconnection（校標(biāo)儀安裝）CylinderPressuretransducermountingandset-up(壓力傳感器及設(shè)置)Ignitionsignalset-up（點(diǎn)火信號(hào)設(shè)置）IndiComMeasurements（采樣）IndiComResults（采樣結(jié)果）IndiComuseforenginecalibration（在臺(tái)架標(biāo)定的應(yīng)用）1AVLIndicomSetUp（AVL燃燒分析設(shè)置）E35EngineGeometryData（發(fā)動(dòng)機(jī)機(jī)械參數(shù)）Type(類型)strokes/cycle(沖程)stroke（缸徑）conrod(活塞連桿中心距)bore(行程)compression（壓縮比）polytropiccoefficient(汽油1.32，柴油1.37，直噴1.35)。點(diǎn)火順序及轉(zhuǎn)角。2EngineGeometryData（發(fā)動(dòng)機(jī)機(jī)械參數(shù)）36AngleEncoder（較標(biāo)儀）安裝要求：和皮帶輪的同心度不大于0.02mm3AngleEncoder（較標(biāo)儀）安裝要求：和皮帶輪的同37AngleEncoder

（較標(biāo)儀）設(shè)置或者選擇較標(biāo)儀類型Type。設(shè)置發(fā)動(dòng)機(jī)壓縮上止點(diǎn)（通常設(shè)置1缸壓縮上止點(diǎn)）4AngleEncoder（較標(biāo)儀）設(shè)置或者選擇較標(biāo)儀類38AngleEncoderTDCDetermination（較標(biāo)儀壓縮上止點(diǎn)測(cè)定）ConductTDCDeterminationat:2000rpmWOT（Motored）(油門(mén)全開(kāi)倒拖)CoolantTemp（水溫）=90°COilTemp（油溫）=90°CUseLossAngle=0.7°CAforMotoredPressure.AVLTDCSensorisamoreAccurateMethod!（使用AVL壓縮上止點(diǎn)傳感器將更精確。）5AngleEncoderTDCDeterminati39IndiComSignalSet-Up（信號(hào)設(shè)置）6IndiComSignalSet-Up（信號(hào)設(shè)置）40ChargeAmplifier（信號(hào)放大器）7ChargeAmplifier（信號(hào)放大器）41PressureTransducers（壓力傳感器）Usesensitivityaccordingtopressurerange（壓力變化敏感度）20.70for100Barrange(Gasoline)（汽油機(jī)）20.55for250Barrange(Diesel)（柴油機(jī)）PressureTransducermountedinthecylinderheadaremorereliablethansparkplugtransducers(butmoredifficulttofit).8PressureTransducers（壓力傳感器）Us42ChargeAmplifierSet-up（放大器設(shè)置）9ChargeAmplifierSet-up（放大器設(shè)置43CylinderPressureSet-up（絕對(duì)壓力設(shè)置）由于此類型壓力傳感器只能測(cè)量壓力的變化值，而不能直接測(cè)量出壓力的絕對(duì)值，因此按圖示設(shè)置零位修正（zerolevelcorrection）以便能計(jì)算出壓力的絕對(duì)值。10CylinderPressureSet-up（絕對(duì)壓44CylinderPressureSet-up

（絕對(duì)壓力設(shè)置）觀察窗口的設(shè)置11CylinderPressureSet-up（絕對(duì)45CylinderPressureSet-up

（絕對(duì)壓力設(shè)置）12CylinderPressureSet-up（絕對(duì)46IgnitionSignalSet-up（點(diǎn)火信號(hào)設(shè)置）直接從點(diǎn)火線圈和ECU連接線上取點(diǎn)火信號(hào)。設(shè)置當(dāng)電壓下降到多少V時(shí)火花塞點(diǎn)火。（如1V，這和點(diǎn)火線圈的特性有關(guān)）13IgnitionSignalSet-up（點(diǎn)火信號(hào)設(shè)47IgnitionSignalSet-up

（點(diǎn)火信號(hào)設(shè)置）設(shè)置點(diǎn)火信號(hào)的工作范圍及觀察窗口。14IgnitionSignalSet-up（點(diǎn)火信號(hào)48IgnitionSignalSet-up

（點(diǎn)火信號(hào)設(shè)置）15IgnitionSignalSet-up（點(diǎn)火信號(hào)49IndiComResults（采樣結(jié)果）選擇要測(cè)量和計(jì)算的參數(shù)16IndiComResults（采樣結(jié)果）選擇要測(cè)量和計(jì)50Pmax（最大燃燒壓力）17Pmax（最大燃燒壓力）51PMax

（最大燃燒壓力）18PMax（最大燃燒壓力）52IndicatedMeanEffectivePressure（平均有效燃燒壓力）平均有效燃燒壓力IMEP=∮pdv，反應(yīng)發(fā)動(dòng)機(jī)的做工能力，IMEP越大，發(fā)動(dòng)機(jī)做工越多。19IndicatedMeanEffectivePre53IndicatedMeanEffectivePressure

（平均有效燃燒壓力）20IndicatedMeanEffectivePre54HeatRelease（熱量釋放）熱量釋放（燃油燃燒）一般測(cè)量AI10%，AI50%,AI75%,AI90%時(shí)的曲軸轉(zhuǎn)角。21HeatRelease（熱量釋放）熱量釋放（燃油燃燒）55HeatRelease（熱量釋放）22HeatRelease（熱量釋放）56HeatRelease23HeatRelease57Knock（爆震）爆震采樣時(shí)間≤0.1DC才能有效觀測(cè)到爆震。24Knock（爆震）爆震采樣時(shí)間≤0.1DC才能有效觀測(cè)58Knock設(shè)置爆震定義，即什么情況下為一次爆震。25Knock設(shè)置爆震定義，即什么情況下為一次爆震。59Knock26Knock60IgnitionResults（點(diǎn)火角采樣結(jié)果）27IgnitionResults（點(diǎn)火角采樣結(jié)果）61IgnitionResults28IgnitionResults62LogPLogV