某汽車(chē)NVH（噪聲）知識(shí)培訓(xùn)教材課件

1.1NVHOverview

NVH概論FordMotorCompanyVehicleAttributesEngineering福特汽車(chē)公司整車(chē)設(shè)計(jì)部門(mén)VehicleNVHAwarenessJ.Juan/M.Haffey11.1NVHOverview

NVH概論FordM1WhatisNVH?

什么是NVH呢？Noise-whatthecustomerhears

噪聲-指的是顧客所能聽(tīng)到的聲音—Soundmainlyinthe20HZ~10000HZfrequencyrange.—聲音的頻率大體上在20赫茲到10000赫茲之間?！狢haracterizedbyfrequency,levelandquality.—通過(guò)頻率、級(jí)別和音質(zhì)來(lái)描述。Vibration-Whatthecustomerfellsandsees.

振動(dòng)-指的是顧客所感覺(jué)到的和看到的。—Motionsensedbythebodymainlyinthe0.5HZ~50HZfrequencyrange.—身體所能感知運(yùn)動(dòng)的頻率范圍通常在0.5赫茲到50赫茲之間?！狢haracterizedbyfrequency,levelanddirection.—通過(guò)頻率、振幅和方向來(lái)描述。Harshness-Combinedeffectsofnoiseandvibration不舒適性-指的是噪聲和振動(dòng)的綜合影響?！猂ough,gratingordiscordantsensations.—粗野的，刺耳的或不和諧的感覺(jué)。VehicleNVHAwareness1.1NVHOverview2WhatisNVH?

什么是NVH呢？Noise-wha2NVHmustfulfilllegalrequirements.

NVH必須滿(mǎn)足法定的要求。NVHshouldprovidetheacoustical/tactilefeedbackforsafeandconfidentdriving.

NVH應(yīng)該使乘員在駕駛方面有安全和自信的感覺(jué)。—Linktooperatingconditions.

—在各種操作環(huán)境。—Connectiontoearth.

—在各種路面。NVHshouldavoidanynegativeperception.

NVH應(yīng)該避免任何不好的感覺(jué)。—unpleasant,unrefined,unexpected,andannoyingevents.

—令人不愉快的，粗俗的，意料之外的和令人討厭的事情。NVHcanexceedcustomerexpectations.

NVH應(yīng)該能超過(guò)顧客的期望值。VehicleNVHAwareness1.1NVHOverview3NVHObjectives

NVH的目標(biāo)NVHmustfulfilllegalrequire3NVHlinktocustomersatisfaction

NVH反映了消費(fèi)者滿(mǎn)意的程度TGR—Pressreview(examples)

TGR—媒體評(píng)論（例如）“…Fiestahasasurprisinglyquiet&wellrefinedengine”

“…Fiesta有一臺(tái)令人驚訝的安靜而且舒適的發(fā)動(dòng)機(jī)”“…[F150]rideissmoothquietwiththe4.6L”

“…[F150]乘坐舒適安靜的4.6升發(fā)動(dòng)機(jī)汽車(chē)”TGR—ThingsGoneWrong20%~30%ofTGWisNVHrelated.

TGR—所抱怨的事情20%~30%抱怨的產(chǎn)生都是與NVH有關(guān)系的。VehicleNVHAwareness1.1NVHOverview4NVHlinktocustomersatisfact4VehicleNVHAwareness1.1NVHOverview5NVHLinkstoCompanyProfit

NVH關(guān)系著公司的利益15~29%ofwarrantycosthasnoiseasaconditioncode.

15~29%的保修的費(fèi)用是花費(fèi)在與噪聲有關(guān)的。1994modelyear,36MIS,warrantycostassociatedwithallnoisewas$346million–18%oftotalwarranty.94年型車(chē)，3年的在用車(chē)，在噪聲方面的保修費(fèi)用是3.46億美元—占總費(fèi)用的18%。VehicleNVHAwareness1.1NVHO5VehicleNVHAwareness1.1NVHOverview6NVHLinkstoCompanyProfit

NVH關(guān)系著公司的利益NVHPrototypecostreductionopportunity.

COMBINEDCOSTBREAKDOWNPROTOTYPECOSTCONTRIBUTION

綜合成本明細(xì)樣機(jī)花費(fèi)的組成(TASE+SAFETY+NVH)

（TASE+安全設(shè)備+NVH）TotalCost=$303M(BaseonTASE,Safety,NVHCostofAttributeStudies總支出=3.03億美元（基于TASE，安全，NVH的研究費(fèi)用）VehicleNVHAwareness1.1NVHO6VehicleNVHAwareness1.1NVHOverview7SoundGenerationMechanism

產(chǎn)生噪聲的原理Multiplemechanismsgenerateavariabilityofvehiclesound.

汽車(chē)所產(chǎn)生噪聲的原理是多種多樣的。CombustionAirflow,pumping燃燒氣流，進(jìn)排氣ImpactsbetweencomponentsAirflow,turbulences零件之間的撞擊氣流，(液體或氣體的)紊亂FrictioncontactofcomponentsSurfaceroughness構(gòu)件之間的摩擦粗糙的表面RotatingpartsUnbalancemasses

旋轉(zhuǎn)的部件不平衡塊FlowinpipesTireforcevariation在管中的流動(dòng)輪胎壓力的變化VehicleNVHAwareness1.1NVHO7VehicleNVHAwareness1.1NVHOverview8VehicleSounds

汽車(chē)的噪聲CombustionnoisewindnoiseGearrattleBearingknock燃燒的噪聲風(fēng)的噪聲齒輪傳動(dòng)的聲音軸承的敲擊聲DieselknockingSunroofnoiseGearwhineElectricwindows柴油機(jī)的敲擊聲遮陽(yáng)頂棚的噪聲齒輪的聲音電動(dòng)窗的噪聲ValvetrainDoorslamGearlevertizzTirenoise氣閥機(jī)構(gòu)的噪聲門(mén)的砰的聲音變速桿換檔的噪聲輪胎的噪聲FEADnoiseCentrallockingDrivelineclonkExhaustnoiseFEAD噪聲中央門(mén)鎖的噪聲動(dòng)力傳動(dòng)系統(tǒng)的噪聲排氣噪聲PASnoiseSwitchnoiseDrivelinethrashSqueaksandrattles動(dòng)力轉(zhuǎn)向系統(tǒng)的聲音開(kāi)關(guān)的噪聲動(dòng)力傳動(dòng)系統(tǒng)的噪聲吱吱聲和喀嚓聲FuelpumpnoiseIndicatortickingRoadnoiseWatersplashnoise燃油泵的噪聲指示器的滴答聲道路的噪聲水濺的噪聲AlternatorwhineWindscreenwipenoiseImpactharshnessIntakenoise交流發(fā)電機(jī)的噪聲擋風(fēng)玻璃的噪聲撞擊振動(dòng)聲通風(fēng)口的噪聲VehicleNVHAwareness1.1NVHO8VehicleNVHAwareness1.1NVHOverview9NVHPhenomena

NVH現(xiàn)象OPERATINGCONDITION操作環(huán)境DESCRIPTION描述SOURCE

資源Pass-ByDecelerationCruiseAccelerationIdleStaring

BoomRumbleGrowlWhineRattleSquealHissEngineTransmissionExhaust/intakeRoadWindTireVehicleNVHAwareness1.1NVHO9VehicleNVHAwareness1.1NVHOverview10VehicleNoiseExamples

汽車(chē)的噪聲舉例WindNoise(80mphHST)-1/12thOctaveSpectrum.風(fēng)的噪聲（80英里每小時(shí)的高速試驗(yàn)）1/12倍頻程分貝頻率VehicleNVHAwareness1.1NVHO10VehicleNVHAwareness1.1NVHOverview11VehicleNoiseExamples

汽車(chē)噪聲舉例RoadNoise(40mphRoughRd.)-NarrowSpectrum.道路噪聲（40英里每小時(shí)在粗糙路面之上）-窄頻。VehicleNVHAwareness1.1NVHO11VehicleNVHAwareness1.1NVHOverview12VehicleNoiseExamples

汽車(chē)噪聲舉例PowerNoise(WOT)-Loudness&speechIntelligibility.動(dòng)力系統(tǒng)噪聲（WOT）-響度以及說(shuō)話(huà)的清晰度VehicleNVHAwareness1.1NVHO12VehicleNVHAwareness1.1NVHOverview13SubjectiveImpression

主觀感受Createdbythebrainbasedon:建立在頭腦感覺(jué)的基礎(chǔ)之上：—database,dataanalysis“Thissoundslikeanengine”資料庫(kù)，數(shù)據(jù)分析“這種噪聲如同一臺(tái)發(fā)動(dòng)機(jī)”—experience“Ihaveheadavarietyofengines”經(jīng)驗(yàn)“我聽(tīng)到了發(fā)動(dòng)機(jī)的聲音”—bias“…h(huán)asneverbuiltgoodengines”偏見(jiàn)“…從來(lái)沒(méi)有生產(chǎn)過(guò)好的發(fā)動(dòng)機(jī)”—……CompanyusesVERStoproduceconsistentratings.公司用定額指標(biāo)的方法生產(chǎn)產(chǎn)品。EngineeringRatingIndex工程額定指標(biāo)EvaluationofattributePerformance品質(zhì)性能評(píng)價(jià)CustomerSatisfaction(forthisattribute)消費(fèi)者的滿(mǎn)意度（對(duì)于品質(zhì)方面）ImprovementDesiredby渴望得到改進(jìn)的人…3Notacceptable

不能接受的VeryDissatisfied很不滿(mǎn)意AllCustomers所有的消費(fèi)者……6acceptable

可以接受的FairlyWellSatisfied還算感到滿(mǎn)意CriticalCustomers愛(ài)挑剔的顧客……10Excellent優(yōu)秀CompletelySatisfied完全滿(mǎn)意NotPerceptible很少的顧客…VehicleNVHAwareness1.1NVHO13VehicleNVHAwareness1.1NVHOverview14Subjective/ObjectiveCorrelation

主觀與客觀的相互關(guān)系Objectivemeasureisrequiredfortargetsetting/cascading.客觀的方法需要滿(mǎn)足目標(biāo)的設(shè)置和層次。VehicleNVHAwareness1.1NVHO14VehicleNVHAwareness1.1NVHOverview15RoadNVHTargetCascade

道路NVH目標(biāo)層次RoadNVH(1)BodyAcoustic&Vibrationsensitivities(4)AirborneNoise(3)StructureborneNVH(2)SuspensionForceInputinBody(5)PointMobiles(8)BodyModes(9)BodyStructure(10)PanelDamping&NoiseIsolation(11)SeatVibrationTransmissibility(12)Seatmodes(13)SleepingcolumnVIBSensitivity(14)Powertrainmodes(15)Body/Frame/SubframeForceTransmissibility(16)SuspensionForceTransmissibility(19)Body/Frame/SubframeMounts(17)Frame/SubframeModes(18)SuspensionMounts(20)SuspensionFriction/sticktion(21)ShockDamping(22)SuspensionGeometry(23)Road/TireContactforce(26)TireProperties(27)TirePressure(28)TireSize/AspectRatio(29)TireModes(30)WheelModes(31)StrutModes(30)ImbalanceForce(32)SoundPackageNoiseReduction(6)TireRadiatedNoise(7)BarrierTransmissionLoss(33)Absorption(42)Carpet(43)SeatMaterial(44)Headliner(45)Wheelhouse(38)Floor(39)SidePanel(40)Glass(41)Lockage(34)AreaofHoles(pass-Through)(35)WheelModes(36)VehicleNVHAwareness1.1NVHO15VehicleNVHAwareness1.1NVHOverview16RoadNVHDesignGuidelines

道路NVH設(shè)計(jì)指導(dǎo)Reducebodynoisetransferfunctions(<0.01Pa/N)減少車(chē)身傳遞的噪聲(<0.01Pa/N)。Designinteriorcavitynodalpointatpassenger’sheadposition.在乘客頭的位置設(shè)計(jì)通風(fēng)口。Reducesuspensionforceinputtobody.減少輸入車(chē)體的中止力量。Increaseseatisolationabove6Hz(transmissibility<0.5mm/s/N).增大座椅在6赫茲以上的隔絕.(能傳遞<0.5mm/s/牛頓)？Increasebodyattachmentstiffness/bushingstiffnessratio(>5:1).增加車(chē)身附件剛性/襯套剛性比(>5:1)。Assuregoodmodalseparation.保證好的模態(tài)分離。-separatemajorbodymodesandacousticcavities.分離主要的車(chē)體模態(tài)和有聲音的。-separatebodymodesfromsuspensionmodes.分離車(chē)體模式中的懸掛部分。-separatewheelmodesfromtiremodes.把車(chē)輪和車(chē)胎分離開(kāi)來(lái)。Reducetire/wheelunbalanceandtireradiatednoise.減少車(chē)胎/輪不平衡性和車(chē)胎的輻射噪聲。VehicleNVHAwareness1.1NVHO16VehicleNVHAwareness1.1NVHOverview17VehicleAttributesCompatibility

車(chē)輛的兼容特性VehicleNVHAwareness1.1NVHO17VehicleNVHAwareness1.1NVHOverview18CourseExpectedOutcomes

課程預(yù)期的結(jié)果Understandingandappreciationofeachmajorsystem’sinfluenceonNVH.理解和正確評(píng)價(jià)各個(gè)主要系統(tǒng)對(duì)NVH的影響。UnderstandingofdesignconceptandguidelinesforNVHandtheirtrade-offswithothervehicleattributes.理解NVH的設(shè)計(jì)觀念和指導(dǎo)方法以及其和車(chē)輛其它屬性的協(xié)調(diào)。UnderstandingofengineeringbestpracticesandappropriateNVHtools/methods.理解工程中最好的常用的和適當(dāng)?shù)腘VH設(shè)備/方法。Recognizingcompanyexpectsandcontactpersonforfutureassistance.理解公司的期望和認(rèn)識(shí)以后有幫助的人。VehicleNVHAwareness1.1NVHO18VehicleNVHAwareness1.1NVHOverview19NVHDepartments

NVH部門(mén)

Department

部門(mén)Manager管理人員Profs教授VehicleNVH

車(chē)輛NVHTomLahvicTLAHVICSystemNVH

系統(tǒng)NVHRonQuagliaRQUAGLIAVehicleNVHEurope

車(chē)輛歐洲NVHKarl-HeinzBurgerKBUERGERP/TNVH&CAE

P/TNVH&計(jì)算機(jī)輔助教學(xué)MikeRaoMRAOSqueak&Rattle

GaryBoesGBOESCAENVH

計(jì)算機(jī)輔助教學(xué)NVHMikeHaffeyMHAFFEYACD，CCSubsystem

ACD，CC子系統(tǒng)JohnBuschJBUSCHACD，CCTechnology

ACD，CC工藝JohnBarkleyJBARKLEYVehicleNVHAwareness1.1NVHO19VehicleNVHAwareness1.1NVHOverview20CourseOutlines

課程概要Day1第一天-IntroductiontoNVH,BasicNVHConcepts,DOE.介紹NVH，初步了解NVH的概念，能源部。-SoundQualityEngineering.噪聲質(zhì)量工程。-R202,TargetSettingStrategies.R202,設(shè)定目標(biāo)策略。Day2第二天-P/TNVH.-P/TsystemsNVH.Engine,AccessoryNVH.發(fā)動(dòng)機(jī)，附加件NVH。Axle,GearNoise,Rattle,Clunk.車(chē)軸，齒輪傳動(dòng)噪聲，嘎嘎聲和沉悶的金屬聲。InductionNoise.進(jìn)氣噪聲。VehicleNVHAwareness1.1NVHO20VehicleNVHAwareness1.1NVHOverview21CourseOutlines(Cont’d）

課程概要(續(xù))Day3第三天-RoadNVH.-道路VNH。-ChassisNVH,BrakeRoughness.-底盤(pán)NVH,制動(dòng)粗暴。-Squeak&Rattle.-尖叫聲和卡吱聲。Day4-VehicleDrive/Demonstration.

第四天-車(chē)輛駕駛/示范。Day5第五天-BodyNVH-車(chē)身NVH-WindNoise-風(fēng)的噪聲VehicleNVHAwareness1.1NVHO21演講完畢，謝謝觀看！演講完畢，謝謝觀看！221.1NVHOverview

NVH概論FordMotorCompanyVehicleAttributesEngineering福特汽車(chē)公司整車(chē)設(shè)計(jì)部門(mén)VehicleNVHAwarenessJ.Juan/M.Haffey11.1NVHOverview

NVH概論FordM23WhatisNVH?

什么是NVH呢？Noise-whatthecustomerhears

噪聲-指的是顧客所能聽(tīng)到的聲音—Soundmainlyinthe20HZ~10000HZfrequencyrange.—聲音的頻率大體上在20赫茲到10000赫茲之間?！狢haracterizedbyfrequency,levelandquality.—通過(guò)頻率、級(jí)別和音質(zhì)來(lái)描述。Vibration-Whatthecustomerfellsandsees.

振動(dòng)-指的是顧客所感覺(jué)到的和看到的。—Motionsensedbythebodymainlyinthe0.5HZ~50HZfrequencyrange.—身體所能感知運(yùn)動(dòng)的頻率范圍通常在0.5赫茲到50赫茲之間。—Characterizedbyfrequency,levelanddirection.—通過(guò)頻率、振幅和方向來(lái)描述。Harshness-Combinedeffectsofnoiseandvibration不舒適性-指的是噪聲和振動(dòng)的綜合影響?！猂ough,gratingordiscordantsensations.—粗野的，刺耳的或不和諧的感覺(jué)。VehicleNVHAwareness1.1NVHOverview2WhatisNVH?

什么是NVH呢？Noise-wha24NVHmustfulfilllegalrequirements.

NVH必須滿(mǎn)足法定的要求。NVHshouldprovidetheacoustical/tactilefeedbackforsafeandconfidentdriving.

NVH應(yīng)該使乘員在駕駛方面有安全和自信的感覺(jué)?！狶inktooperatingconditions.

—在各種操作環(huán)境。—Connectiontoearth.

—在各種路面。NVHshouldavoidanynegativeperception.

NVH應(yīng)該避免任何不好的感覺(jué)?！猽npleasant,unrefined,unexpected,andannoyingevents.

—令人不愉快的，粗俗的，意料之外的和令人討厭的事情。NVHcanexceedcustomerexpectations.

NVH應(yīng)該能超過(guò)顧客的期望值。VehicleNVHAwareness1.1NVHOverview3NVHObjectives

NVH的目標(biāo)NVHmustfulfilllegalrequire25NVHlinktocustomersatisfaction

NVH反映了消費(fèi)者滿(mǎn)意的程度TGR—Pressreview(examples)

TGR—媒體評(píng)論（例如）“…Fiestahasasurprisinglyquiet&wellrefinedengine”

“…Fiesta有一臺(tái)令人驚訝的安靜而且舒適的發(fā)動(dòng)機(jī)”“…[F150]rideissmoothquietwiththe4.6L”

“…[F150]乘坐舒適安靜的4.6升發(fā)動(dòng)機(jī)汽車(chē)”TGR—ThingsGoneWrong20%~30%ofTGWisNVHrelated.

TGR—所抱怨的事情20%~30%抱怨的產(chǎn)生都是與NVH有關(guān)系的。VehicleNVHAwareness1.1NVHOverview4NVHlinktocustomersatisfact26VehicleNVHAwareness1.1NVHOverview5NVHLinkstoCompanyProfit

NVH關(guān)系著公司的利益15~29%ofwarrantycosthasnoiseasaconditioncode.

15~29%的保修的費(fèi)用是花費(fèi)在與噪聲有關(guān)的。1994modelyear,36MIS,warrantycostassociatedwithallnoisewas$346million–18%oftotalwarranty.94年型車(chē)，3年的在用車(chē)，在噪聲方面的保修費(fèi)用是3.46億美元—占總費(fèi)用的18%。VehicleNVHAwareness1.1NVHO27VehicleNVHAwareness1.1NVHOverview6NVHLinkstoCompanyProfit

NVH關(guān)系著公司的利益NVHPrototypecostreductionopportunity.

COMBINEDCOSTBREAKDOWNPROTOTYPECOSTCONTRIBUTION

綜合成本明細(xì)樣機(jī)花費(fèi)的組成(TASE+SAFETY+NVH)

（TASE+安全設(shè)備+NVH）TotalCost=$303M(BaseonTASE,Safety,NVHCostofAttributeStudies總支出=3.03億美元（基于TASE，安全，NVH的研究費(fèi)用）VehicleNVHAwareness1.1NVHO28VehicleNVHAwareness1.1NVHOverview7SoundGenerationMechanism

產(chǎn)生噪聲的原理Multiplemechanismsgenerateavariabilityofvehiclesound.

汽車(chē)所產(chǎn)生噪聲的原理是多種多樣的。CombustionAirflow,pumping燃燒氣流，進(jìn)排氣ImpactsbetweencomponentsAirflow,turbulences零件之間的撞擊氣流，(液體或氣體的)紊亂FrictioncontactofcomponentsSurfaceroughness構(gòu)件之間的摩擦粗糙的表面RotatingpartsUnbalancemasses

旋轉(zhuǎn)的部件不平衡塊FlowinpipesTireforcevariation在管中的流動(dòng)輪胎壓力的變化VehicleNVHAwareness1.1NVHO29VehicleNVHAwareness1.1NVHOverview8VehicleSounds

汽車(chē)的噪聲CombustionnoisewindnoiseGearrattleBearingknock燃燒的噪聲風(fēng)的噪聲齒輪傳動(dòng)的聲音軸承的敲擊聲DieselknockingSunroofnoiseGearwhineElectricwindows柴油機(jī)的敲擊聲遮陽(yáng)頂棚的噪聲齒輪的聲音電動(dòng)窗的噪聲ValvetrainDoorslamGearlevertizzTirenoise氣閥機(jī)構(gòu)的噪聲門(mén)的砰的聲音變速桿換檔的噪聲輪胎的噪聲FEADnoiseCentrallockingDrivelineclonkExhaustnoiseFEAD噪聲中央門(mén)鎖的噪聲動(dòng)力傳動(dòng)系統(tǒng)的噪聲排氣噪聲PASnoiseSwitchnoiseDrivelinethrashSqueaksandrattles動(dòng)力轉(zhuǎn)向系統(tǒng)的聲音開(kāi)關(guān)的噪聲動(dòng)力傳動(dòng)系統(tǒng)的噪聲吱吱聲和喀嚓聲FuelpumpnoiseIndicatortickingRoadnoiseWatersplashnoise燃油泵的噪聲指示器的滴答聲道路的噪聲水濺的噪聲AlternatorwhineWindscreenwipenoiseImpactharshnessIntakenoise交流發(fā)電機(jī)的噪聲擋風(fēng)玻璃的噪聲撞擊振動(dòng)聲通風(fēng)口的噪聲VehicleNVHAwareness1.1NVHO30VehicleNVHAwareness1.1NVHOverview9NVHPhenomena

NVH現(xiàn)象OPERATINGCONDITION操作環(huán)境DESCRIPTION描述SOURCE

資源Pass-ByDecelerationCruiseAccelerationIdleStaring

BoomRumbleGrowlWhineRattleSquealHissEngineTransmissionExhaust/intakeRoadWindTireVehicleNVHAwareness1.1NVHO31VehicleNVHAwareness1.1NVHOverview10VehicleNoiseExamples

汽車(chē)的噪聲舉例WindNoise(80mphHST)-1/12thOctaveSpectrum.風(fēng)的噪聲（80英里每小時(shí)的高速試驗(yàn)）1/12倍頻程分貝頻率VehicleNVHAwareness1.1NVHO32VehicleNVHAwareness1.1NVHOverview11VehicleNoiseExamples

汽車(chē)噪聲舉例RoadNoise(40mphRoughRd.)-NarrowSpectrum.道路噪聲（40英里每小時(shí)在粗糙路面之上）-窄頻。VehicleNVHAwareness1.1NVHO33VehicleNVHAwareness1.1NVHOverview12VehicleNoiseExamples

汽車(chē)噪聲舉例PowerNoise(WOT)-Loudness&speechIntelligibility.動(dòng)力系統(tǒng)噪聲（WOT）-響度以及說(shuō)話(huà)的清晰度VehicleNVHAwareness1.1NVHO34VehicleNVHAwareness1.1NVHOverview13SubjectiveImpression

主觀感受Createdbythebrainbasedon:建立在頭腦感覺(jué)的基礎(chǔ)之上：—database,dataanalysis“Thissoundslikeanengine”資料庫(kù)，數(shù)據(jù)分析“這種噪聲如同一臺(tái)發(fā)動(dòng)機(jī)”—experience“Ihaveheadavarietyofengines”經(jīng)驗(yàn)“我聽(tīng)到了發(fā)動(dòng)機(jī)的聲音”—bias“…h(huán)asneverbuiltgoodengines”偏見(jiàn)“…從來(lái)沒(méi)有生產(chǎn)過(guò)好的發(fā)動(dòng)機(jī)”—……CompanyusesVERStoproduceconsistentratings.公司用定額指標(biāo)的方法生產(chǎn)產(chǎn)品。EngineeringRatingIndex工程額定指標(biāo)EvaluationofattributePerformance品質(zhì)性能評(píng)價(jià)CustomerSatisfaction(forthisattribute)消費(fèi)者的滿(mǎn)意度（對(duì)于品質(zhì)方面）ImprovementDesiredby渴望得到改進(jìn)的人…3Notacceptable

不能接受的VeryDissatisfied很不滿(mǎn)意AllCustomers所有的消費(fèi)者……6acceptable

可以接受的FairlyWellSatisfied還算感到滿(mǎn)意CriticalCustomers愛(ài)挑剔的顧客……10Excellent優(yōu)秀CompletelySatisfied完全滿(mǎn)意NotPerceptible很少的顧客…VehicleNVHAwareness1.1NVHO35VehicleNVHAwareness1.1NVHOverview14Subjective/ObjectiveCorrelation

主觀與客觀的相互關(guān)系Objectivemeasureisrequiredfortargetsetting/cascading.客觀的方法需要滿(mǎn)足目標(biāo)的設(shè)置和層次。VehicleNVHAwareness1.1NVHO36VehicleNVHAwareness1.1NVHOverview15RoadNVHTargetCascade

道路NVH目標(biāo)層次RoadNVH(1)BodyAcoustic&Vibrationsensitivities(4)AirborneNoise(3)StructureborneNVH(2)SuspensionForceInputinBody(5)PointMobiles(8)BodyModes(9)BodyStructure(10)PanelDamping&NoiseIsolation(11)SeatVibrationTransmissibility(12)Seatmodes(13)SleepingcolumnVIBSensitivity(14)Powertrainmodes(15)Body/Frame/SubframeForceTransmissibility(16)SuspensionForceTransmissibility(19)Body/Frame/SubframeMounts(17)Frame/SubframeModes(18)SuspensionMounts(20)SuspensionFriction/sticktion(21)ShockDamping(22)SuspensionGeometry(23)Road/TireContactforce(26)TireProperties(27)TirePressure(28)TireSize/AspectRatio(29)TireModes(30)WheelModes(31)StrutModes(30)ImbalanceForce(32)SoundPackageNoiseReduction(6)TireRadiatedNoise(7)BarrierTransmissionLoss(33)Absorption(42)Carpet(43)SeatMaterial(44)Headliner(45)Wheelhouse(38)Floor(39)SidePanel(40)Glass(41)Lockage(34)AreaofHoles(pass-Through)(35)WheelModes(36)VehicleNVHAwareness1.1NVHO37VehicleNVHAwareness1.1NVHOverview16RoadNVHDesignGuidelines

道路NVH設(shè)計(jì)指導(dǎo)Reducebodynoisetransferfunctions(<0.01Pa/N)減少車(chē)身傳遞的噪聲(<0.01Pa/N)。Designinteriorcavitynodalpointatpassenger’sheadposition.在乘客頭的位置設(shè)計(jì)通風(fēng)口。Reducesuspensionforceinputtobody.減少輸入車(chē)體的中止力量。Increaseseatisolationabove6Hz(transmissibility<0.5mm/s/N).增大座椅在6赫茲以上的隔絕.(能傳遞<0.5mm/s/牛頓)？Increasebodyattachmentstiffness/bushingstiffnessratio(>5:1).增加車(chē)身附件剛性/襯套剛性比(>5:1)。Assuregoodmodalseparation.保證好的模態(tài)分離。-separatemajorbodymodesandacousticcavities.分離主要的