NVH性能的开发及S700的工作汇报乘用车设计院整车性能与分析中心2012.11.07目录一NVH用户语言向技术语言(VTS)的转化二三四S700NVHQ7和Q6交付物S700NVHVTS及目前的状态NVH性能开发二级子计划计及ADVPlan五S700NVH后续分析优化工作及VTS验证工作用户语言“车子要安静一点”“方向盘有点抖”“听得见风吹的声音”“过不平的路时,车子有’咯咯’声””关门声有点不对劲”“车子开过去时太吵”商品特性类别序号商品特性指标NVH性能1动力总成NVH2路面NVH3风噪声4异响5系统激发的声音6顾客激发的声音7车身的NVH性能8车子通过的声音技术语言类别商品特性指标技术指标NVH性能动力总成NVH怠速NVH性能缓加速NVH性能急加速NVH性能路面NVH60km/h粗糙路面NVH性能80km/h平滑路面NVH性能60km/h平滑路面NVH性能120km/h平滑路面NVH性能风噪声120km/h风噪声异响整车的异响性能系统激发的声音包括冷却风扇,发电机,空调压缩机,燃油泵,等等顾客激发的声音手动开闭件的声音电动开闭件的声音电动玻璃门窗,天窗的声音HVAC吹风风扇的声音驻车刹车声,ABS声其他顾客激发的声音车身的NVH性能整车的模态分布整车的密封性能车身的隔音与吸音性能带饰件车身的声振传函性能车声结附点的动刚度白车身的主要低频模态性能车子通过的声音通过噪声性能一、NVH用户语言向技术语言的转化二、NVH整车技术指标与S700项目的现状S700VehicleTechnicalSpecification整车技术规范CHARACTERISTIC指标MARKETREQ'T(BIS/BSA/SA)市场需求UNIT单位TARGETVALUE目标值1.8T2WDMT1.8T2WDAT1.8T4WDAT2.0T2WDAT2.0T4WDATPTN&VIdleNoiseACOff,PGear(3.2.1.3.8.1.1)怠速噪声,空调关,P档(S700,N档)N/RdB(A)39.439.439.439.439.4IdleNoiseACOn,DGear(3.2.1.3.8.1.1)怠速噪声,空调开,D档N/RdB(A)46.746.746.746.746.7IdleVibration-SteeringWheelACOff,PGear(3.2.1.3.8.1.1)怠速振动-方向盘,空调关,P档(S700,N档)N/Rm/s^20.180.180.180.180.18IdleVibration-SteeringWheelACOn,DGear(3.2.1.3.8.1.1)怠速振动-方向盘,空调开,D档N/Rm/s^20.400.400.400.400.40IdleVibration-SeatTrack.NGear,ACoff(3.2.1.3.8.1.1)怠速振动-座椅滑轨,空调关,N档N/Rm/s^20.080.080.080.080.08IdleVibration-SeatTrack.DGear,ACon(3.2.1.3.8.1.1)怠速振动-座椅滑轨,空调开,D档N/Rm/s^20.140.140.140.140.14Drive-AwayNoise-3rdGearWOT(3.2.1.3.8.1.2)换档点噪声-3档急加速N/RdB(A)7474747474Drive-AwayNoise-3rdGearWOT(3.2.1.3.8.1.2)换档点噪声-3档急加速N/R%(Articulationindex)=43=43=43=43=43RoadN&VRoadNoise-Cross-GroovedConcreteNoise-60kph(3.2.1.3.8.2.1)路噪-横向挖槽水泥路面-60kphN/RdB(A)N/RN/RN/RN/RN/RLowSpeedCoarseRoadNoise-60kph(3.2.1.3.8.2.1)低速粗糙路面噪声-60公里(通县试车场)N/RdB(A)6060606060RoadNoise-SmoothAsphaltNoise-60kph(3.2.1.3.8.2.1)路噪-平滑水泥路面-60公里(通县试车场)N/RdB(A)5959595959RoadNoise-SmoothAsphaltNoise-60kph(3.2.1.3.8.2.1)路噪-平滑水泥路面-60公里N/R%(Articulationindex)=94=94=94=94=94Roadnoise-SmoothAsphaltNoise-80kph(3.2.1.3.8.2.1)路噪-平滑水泥路面-80公里N/RdB(A)6262626262Roadnoise-SmoothAsphaltNoise-80kph(3.2.1.3.8.2.1)路噪-平滑水泥路面-80公里N/R%(Articulationindex)=90=90=90=90=90Roadnoise-SmoothAsphaltNoise-112kph(3.2.1.3.8.2.1)路噪-平滑水泥路面-112公里N/RdB(A)6868686868Roadnoise-SmoothAsphaltNoise-112kph(3.2.1.3.8.2.1)路噪-平滑水泥路面-112公里N/R%(Articulationindex)=67=67=67=67=67ComponentN&VTrimmedBody1stStructuralMode(3.2.1.3.8.7.2)内外饰车身的第一阶结构模态(后扭)N/RHz=21=21=21=21=21CASSubjectiveEvaluation-DoorClosingSound(3.2.1.3.8.5.1)CAS(雇客激发的声音)主观评价-关门声N/RGMUTSRatingScale77777CASSubjectiveEvaluation-PowerDoorLockSound(3.2.1.3.8.5.1)CAS主观评价-电动门锁锁门声N/RGMUTSRatingScale77777CASSubjectiveEvaluation-PowerWindowsSound(3.2.1.3.8.5.4)CAS主观评价-电动玻璃升降声N/RGMUTSRatingScale6.56.56.56.56.5SASObjectiveEvaluation-OverallHVACNoise(3.2.1.3.8.5.6)SAS(系统激发的声音)客观评价-空调系统总噪声N/RdB(A)=64.5=64.5=64.6=64.7=64.8SASObjectiveEvaluation-CRFMFanNoise(3.2.1.3.8.5.6)LowSpeed,SAS客观评价-冷却风扇噪声-低速N/RdB(A)3535353535SASObjectiveEvaluation-CRFMFanNoise(3.2.1.3.8.5.6)HighSpeed,SAS客观评价--冷却风扇噪声-高速N/RdB(A)43.743.743.743.743.7SASSubjectiveEvaluation-GeneratorNoise,SAS主观评价-发电机噪声N/RGMUTSRatingScale6.56.56.56.56.5SASSubjectiveEvaluation-SteeringPumpNoise(3.2.1.3.8.5.7),SAS主观评价-转向助力泵噪声N/RGMUTSRatingScale6.56.56.56.56.5S&RS&RFullVehicleSubjectiveEvaluation(3.2.1.3.8.4.1),整车异响主观评价N/RGMUTSRatingScale6.56.56.56.56.5RegulationExteriorPass-ByNoise外部通过噪声(3.2.1.3.8.6.1)N/RdB(A)7272727272WindNoiseWindNoise-AsReceivedTestedinWindTunnel(3.2.1.3.8.3.1)风燥-原车(装配好的车)风洞试验N/RdB(A)N/RN/RN/RN/RN/R%(Articulationindex)N/RN/RN/RN/RN/R二、NVH整车技术指标与S700项目的现状S700NVHVTS整车模态分布表噪声、振动源典型工况频率(Hz)3456789#发动机正常怠速750rpm(+空调)(2阶)25.00发动机冷启动900rpm(2阶),不很重要30.00轮胎/轮毂9.5716.75系统/部件模态名频率(Hz)3456789#整车第一阶后部扭转模态20--22整车第一阶垂直弯曲模态24--28整车第一阶扭转模态38--44方向盘扭转模态16方向盘在整车上上下弯曲模态35方向盘在整车上左右弯曲模态38前悬架Z向模态(hop、trap)12--15前悬架的X向模态Steering、walking19--22后悬架的Z向模态(hop、trap)12--15前后移动模态(X+Rx)6左右移动模态(Y)5上下移动模态(Z)8横向转动模态(Rx)15纵向转动模态(Ry)11左右转动模态(Rz)14排气系统所有模态频率:11-23,and2811--23.28顶棚顶棚第一阶弯曲(凸)模态*30后备门后备门第一阶弯曲(凸)模态=顶棚+-228,32座椅座椅装在车身地板上的模态152530354080-140kph,1阶不平衡,轮胎尺寸=235/60R18,对应的频率范围15152045253020悬架动力总成刚体模态3540方向盘+转向管柱S700整车模态分布表目标值45整车车身Frequency5101520253035404550556065707580PowertrainIdle1storderColdengine2ndorderIdleSpeed700+-30rpmforS200+Idle2ndorder670+-30RpmforB2Clodstart:900rpmTires/WheelImbalance(80KPH~140KPH)AssumeP185/60R14Tire/wheel2ndorderSuspensionHop/TrampFore/aftSeatonFloorTrimBodymodePowertrainRigidmodeBouncePitchYawRoll/lateral/fore/aftExhautflexuralmodeSteercolumn(includewheel)AcousticcavitymodeRoofpanelmodePanels(toePanetc)Compoments5kg二、NVH整车技术指标与S700项目的现状二、NVH整车技术指标与S700项目的现状S700声包状态声包(SoundPackage)零部件清单厚度覆盖面积材料密度状态Hoodliner(发动机舱盖板吸音垫)25mmasbigaspossible1)无纺布(50g/m^2)+玻璃纤维+无纺布(50g/m^2)2)无纺布(50g/m^2)+耐高温PU发泡+无纺布(50g/m^2)3)无纺布(50g/m^2)+耐高温PET纤维+无纺布(50g/m^2)1)1000g/m^22)500g/m^23)1000g/m^2Enginesideinsulator(发动机舱前围吸音垫)25mmasbigaspossible1)无纺布(50g/m^2)+玻璃纤维+无纺布(50g/m^2)2)无纺布(50g/m^2)+耐高温PU发泡+无纺布(50g/m^2)3)无纺布(50g/m^2)+耐高温PET纤维+无纺布(50g/m^2)如发动机温度高,就要用带微孔的铝膜(~0.04mm厚)代替无纺布1)1000g/m^22)500g/m^23)1000/m^210-20mmfrombottomtotop水不易粘上(water-repelling)的PET纤维500-1000g