EN 12369-3-2008 木基板材.结构设计用特征值.第3部分:紧密板材
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【英文标准名称】:Wood-basedpanels-Characteristicvaluesforstructuraldesign-Part3:Solid-woodpanels;EnglishversionofDINEN12369-3:2009-02
【原文标准名称】:木基板材.结构设计用特征值.第3部分:紧密板材
【标准号】:EN12369-3-2008
【标准状态】:现行
【国别】:
【发布日期】:2009-02
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:板材;体密度;特性;等级;建筑;定义;尺寸选定;挠性;家具;数学计算;机械性能;压力;性能;额定值;实木;应变;强度计算;建筑用木料;试验;木结构;值;木制品;木材技术;木质板材;木材加工
【英文主题词】:Boards;Bulkdensity;Characteristics;Classes;Construction;Definition;Definitions;Dimensioning;Flexibility;Furniture;Mathematicalcalculations;Mechanicalproperties;Pressure;Properties;Ratings;Solidtimbers;Strain;Strengthcalculation;Structuraltimber;Testing;Timberstructures;Values;Woodproducts;Woodtechnology;Woodbasedsheetmaterials;Woodworking
【摘要】:
【中国标准分类号】:B70
【国际标准分类号】:79_060_99
【页数】:12P.;A4
【正文语种】:英语
【英文标准名称】:Reciprocatinginternalcombustionengines-Exhaustemissionmeasurement-Measurementofgaseousandparticulateexhaustemissionsatsite
【原文标准名称】:往复式内燃机.排气污染测定.气态和颗粒状排放污染物的定点测量
【标准号】:BSENISO8178-2-1997
【标准状态】:作废
【国别】:英国
【发布日期】:1997-01-15
【实施或试行日期】:1997-01-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:流量测量;原动机;内燃机;现场试验;气体分析;气体分析仪;往复式发动机;误差;排气;颗粒空气污染物;燃烧产物;认可试验;试验条件;数学计算;污染物气体;采样设备;试验设备;准确度;抽样方法;校正
【英文主题词】:Definitions;Emission;Exhaustgases;Exhaustmeasurement;Gaseous;Internalcombustionengines;Mathematicalcalculations;Measurement;Measuringtechniques;Operationallocation;Particles;Particulatemattermeasurement;Reciprocatinginternalcombustionengines;Testing;Testingconditions
【摘要】:ThispartofISO8178,togetherwithISO8178-1,specifiesthemeasurementandevaluationmethodsforgaseousandparticulateexhaustemissionfromreciprocatinginternalcombustionengines(RICengines)understeady-stateconditionsatsite,necessaryfordeterminingoneweightedvalueforeachexhaustgaspollutant.Variouscombi-nationsofengineloadandspeedreflectdifferentengineapplications(seeISO8178-4).ThispartofISO8178ispreferablyappliedwhenRICenginesusedinmarineinstallations,generatingsets,dieselelectricrailtractionorsimilarapplicationsmustbemeasuredatsiteorwhenitisnotpossibletotakethemeasurementsundertest-bedconditionsortousethetest-bedmeasurementresults.ItisinappropriatetoapplythispartofISO8178tooff-roadvehicleenginespoweringvehiclessuchas,butnotlimitedto,agriculturaltractorsandharvesters,earthmovingmachines,largeoff-highwaytrucks(typicallyusedinmining),lawncareandutilityunitsandfork-lifttrucks.Enginespoweringthisequipmentaretobecertifiedonthetestbed.Ifre-checkingorre-certificationoftheseenginesisrequiredafterrebuild,theyshouldpreferablybetestedoutsidethevehicleonasuitableloadapplicationandmeasurementdevicesuchasadynamometerorloadbank.Thismethodcanbeusedfordeterminingconformityorcertificationofnew,usedorrebuiltenginesatsite.Con-firmationoftest-bedresultswithrespecttoISO8178-4canalsobeperformedwithinthisdocument.However,allowancesmustbemadefordifferencesinengineoperatingparametersfromlaboratoryconditions.Theenginemustbeoperatedatthesamespeedandtorquemeasuringpointsasusedfortest-bedmeasurement.Forenginesusedinmachinerycoveredbyadditionalrequirements(e.g.occupationalhealthandsafetyregulations,regulationsforpowerplants)additionaltestconditionsandspecialevaluationmethodsmayapply.NOTE1ThispartofISO8178isintendedtospecifyspecialrequirementsforthemeasurementofgaseousandparticulateemissionsatsite.Emissionscanbemeasuredandshouldbeprimarilymeasuredonatestbedforanyengine.Measurementonthetestbedismuchmoreaccurate,repeatableandeasy.Test-bedmeasurementsusingdefinedtestcyclesrepresentthoseofaverageandtypicaluseofengines.ThetestcyclesspecifiedinISO8178-4cannotalwaysbereproducedatsiteduetoconstraintsofload.Sitemeasurementisnecessaryonlywhenthefollowingrequirementsandconditionsexist.a)Whentest-bedmeasurementfortypeapprovalisnotappropriatebecausesiteconditionscannotbeduplicated.Thistestisasubstitutionoftest-bedmeasurement,thereforethetestshouldbeconductedusingthetestcycleinISO817-4.EXAMPLES1)whentheactualfuelusedatsitecannotbeusedbecauseofavailabilityorenvironmentalrestrictionattest-bedlocation;2)whentheambientconditionsofthetestbedarenotrepresentativeofthesiteconditionsbecauseofdif-ferenceinaltitude,humidityorairtemperature.Inthiscase,thispartofISO8178isonlyapplicabletothoseengineswhichcanreproduceatsite,measuringpointsspecifiedinISO8178-4,suchasmarineenginesatseatrials,initialinstallationofenginesfordrivinggeneratorsanddieselelectriclocomotives.b)Whenmeasurementatsiteisnecessarytoevaluateactualandlocalpollution.Thisshouldbemadeunderactualorsimulatedoperatingconditions.Engineoperationunderatestcyclede-finedinISO8178-4isnotalwayspossible,butthetestprocedureshouldbeascloseaspossibletothatpro-cedure.Therefore,valuesmeasuredinthiscasemaynotbedirectlycomparablewithtest-bedresultsbecausemeasuredvaluesareverymuchdependentontestcycles.c)Whensitemeasurementisagreedbetweenthepartiesinvolved.Valuesobtainedrepresentonlyaspecificengineunderspecificsiteconditionsanddonotnecessarilyr
【中国标准分类号】:J90
【国际标准分类号】:13_040_40;27_020
【页数】:30P;A4
【正文语种】:英语
