应用椭圆齿轮流量计的内燃机油耗测量系统.pdf

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1、第24卷第9期传感技术Vo1．24No．9CHINESEJOURNALOFSENSORSSep．20112011年9月FuelConsumptionMeasurementSystemforInternalCombustionEngineBasedonEllipticalGearFlowmeterGA0Yabiao，LIHongyu，LIXingfei／1．StateKeyLaboratoryofPrecisionMeasuringTechnologyandInstruments，TianjinUniversity，Tian300072，Chi

2、na；2．CollegeofMechanicalandElectronicEngineering，ShandongUniversityofScienceandTechnology，QingdaoShandong266510，China)Abstract：Aflowmeterspecificallydesignedtomeasurefuelconsumptionofaninternalcombustionenginewasintro—duced．Accordingtofeaturesofthecombustionengine，twoellipt

3、icalgearsensorsrespectivelyconnectedtotheinletandoutlettubesoftheenginewereemployed．Meanwhile，thesecondaryinstrumentwasdevelopedtodisplaythemeasuringresults．Aninjectionpumptestbenchandapumpwereusedintheexperimenttoverifytheeffectivenessofthedesignedsystein．Theexperimentswer

4、etestedinthreeworkingconditionsoftheengineincludingmaximumpower，maximumtorque，andstartingspeed，andeachconditionintheexperimentwasrepeatedthreetimesinordertogetreliabledata．Theexperimentalresultsshowthattheflowmetercanworkinastableway，andtherelativeerrorsare0．8％intheworkingc

5、onditionofmaximumpower，0．9％inthemaximumtorque，and32．3％atthestartingspeedseparately．However，boththetwosensorshaveinternalleakagetosomedegree，andtheleakagedecreaseswithincreasingthespeedofthepump．Finally，theexperimentaldatahelpstoimprovethemeasurementaccuracyofthesysteminthef

6、ollowingtwoaspects：designingsuitableparametersofsensorsincludingsuitableendandtipclearance，andthesizeofmeasuringroomwhichshouldmatchtheengine’Spowercorrectly；compensatingtheerrorwithsoftware，thismethodissimplebutalotofexperimentsshouldbedonetogetaccuratelyfittedcorn—pensati

7、oncurve．Keywords：ellipticalgearflowmeter；fuelconsumptionmeasurementforcombustionengine；injectionpumptest；Hal】switchEEACC：7320Wdoi：10．3969／j．issn．1004-1699．2011．09．025应用椭圆齿轮流量计的内燃机油耗测量系统高雅彪，李洪宇，李醒飞h／1．天津大学精密测试技术及仪器国家重点实验室，天津300072；、＼2．山东科技大学机械电子工程学院，山东青岛266510／摘要：介绍一种用于测量内燃机

8、耗油的流量计，以实现对动力机械的燃油控制，达到节能减排的目的。采用椭圆齿轮的测量形式，开发了二次仪表。利用一台喷油泵试验台进行了系统性能验证实验，根据内燃机的实际工