整车NVH声学包开发过程
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Carpet 地毯
Trunk Floor 行李箱地毯
Headliner顶衬
Dash Insulator
Trunk Trim
前围隔热垫
行李箱盖饰板
Test Functional Value 测试基准数值
Assess Design Intent 评估设计目的
Estimate Cost 估计成本 Measure Mass 测量重量
3.) Collect NVH data which is useful for setting targets, and reveals potential design improvements. 收集对设计目标及设计改进有用的NVH数据。
4.) Select and test “Image Vehicles” which emulate the NVH performance being sought. 选择并测试一辆性能较好的车型，寻找一个较好的NVH性能方案。
Part Throttle on Smooth Road in Second、 两档半油门加速测试
Engine 发动机噪声
Coast Down on Smooth Road in Neutral 空挡减速测试
road/tire 胎噪
Stationary Vehicle at Idle in Drive & Neutral 怠速测试（行车怠速和驻车怠速）
1
2
Comparable Comparable
21/28 mpg
22/32 mpg
3501 lbs
3355 lbs
3761 lbs
5
5
5
Sport Utility Vehicle
5-Speed AWD Automatic
Sport Utility Vehicle
6-Speed AWD Automatic
Noise Data Measured outside
the vehicle
Possible Cavity Resonance
Organ Piping
High Frequency Tread Noise
Vehicle Tear Down 拆除车辆内饰件
Hood Insulator 机盖隔热垫
Package Tray 后搁板
65
Fourth Order
60
influences
overall level
55
here.
Second Order
50
Significant here.
45
Pa dB(A)
40
Overall Sound Level
35
Second Order Level
Fourth Order Level
30
1000 1250 1500 1750 2000 2250 2500 2750 3000 3250 3500 3750 4000 4250
Developing a NVH Package for the Vehicle
整车NVH声学包开发过程
Richard E. Wentzel 理查德
Wuxi Jixing Acoustic Auto Part Technology Co., Ltd. 无锡吉兴汽车声学部件科技有限公司
Set Aggressive but Realistic NVH Performance Targets 设定一个富有挑战但又切合实际的NVH性能指标
rpm
9
Selecting Image Vehicles 选择较好的车型
Item Price Fuel Economy Curb Weight Passengers
Body Style
Transm/27 mpg
Image Vehicle Image Vehicle
9
Very good; characteristic may be noticed by some expert listeners.
Engine 发动机噪声
Selecting A Suitable Test Road Surface 选择一个合适的测试路面
Driver's Right Ear @ 80 Kph On-The-Road
Pa dB(A)
60
55
50
45
40
35
30
25
20
15
Curve Smooth Road in Drive 58.3 dB(A) 93.4 %AI
5.) Benchmarking and vehicle tear-down reveals effective design approaches which minimize cost and weight. 通过基准测试来获得最优的成本和重量的方案。
On-Road Operating Conditions and Test Protocol 一般道路上车辆行驶条件和测试协议
20 30 40 50 60 80100
200 300 400 600 1000 2000 3000 5000 10000
Hz
NVH Engineers Inspecting a Rough Road Surface
Rough road 粗糙路面 smooth road 光滑路面
Instrumentation Set Up 测试仪器的设置
SIDI,DOHC, V VT Gasoline
Smooth Road光滑路面
Right Front Pass Right Ear @ 80 Kph Smooth Road
70 65
60
55
50
45
Pa dB(A)
40
35
30
25 Test Vehicle 63.9 dB(A) 68.7 %AI
20
Hz
The Color Plot For a Vehicle with a Quiet Powertrain 瀑布图
Driver Right Ear spl During a Part Throttle Run Up in Second Gear
800
55
750
700
650
600
8.00
550
frnt_CTR (CH5) Hz
60 kph Cruise on Smooth Road in Drive 在光滑路面上以60km/h的速度恒速行驶
60 kph Cruise on Rough Road in Drive 在粗糙路面上以60km/h的速度恒速行驶
80 kph Cruise on Smooth Road in Drive 在光滑路面上以80km/h的速度恒速行驶
Image Vehicle 2 69.9 dB(A) 76.1 %AI 20
15
50 63 79 99 125 157 198 250 315 397 500 630 794 1000
2000
4000
8000
1/3‐Octave Band Center Frequency (Hz)
Mechanisms for Road/Tire Noise 胎噪的原理
Image Vehicle 1 63.0 dB(A) 77.3 %AI
Image Vehicle 2 62.5 dB(A) 81.2 %AI
15
10
50 63 79 99 125 157 198 250 315 397 500 630 7941000
2000
1/3‐Octave Band Center Frequency (Hz)
Microphone Locations
麦克风车内的安装位置
Right Ear
Artifici al
Torso
Left Ear
Engine Mike
Driver Right Ear
2nd Row Left Passenger Left Ear
Record Tachometer and
Vehicle Speed 转速器传感器
Cargo
The Noise Source Contributions声源贡献量
Pa dB(A)
Right Front Passenger Right Ear @ 100 kph on Smooth Asphalt
70 65
60
55
50
45
40
35
30
25
Road-Drive: Wind, Powertrain & Road/Tire 68.6 dB(A) 55.0 %AI
Crossover
6-Speed FWD Automatic
Engine
180-hp, 2.4L 4-Cylinder Fuel
Injected Gasoline,
DOHC
240-hp, 3.0 L, V-6, Fuel Injected Gasoline
180-hp, 2.4 L 4-Cylinder
Wearable microphones enable Binaural data to be captured at the driver position during on-road tests. 头戴式麦克风可以获得驾驶员两耳位置的数据
人工头可以帮助我们在回放 噪声时能获取更精确的数据
Right Front Passenger Right Ear
4000
8000
Rough Road粗糙路面
Pa dB(A)
Right Front Pass Right Ear @ 80 Kph Rough Road
75 70
65
60
55
50
45
40
35
30 Test Vehicle 70.6 dB(A) 58.3 %AI
25
Image Vehicle 1 69.4 dB(A) 74.9 %AI
10
Coarse Road in Drive 63.-8 dB(A) 84.6 %AI -
5
4000
157 198 250 315 397 500 630 794 1000 1260 1587 2000 2520 3175 4000 5040 6350 8000
1/3-Octave Band Center Frequency (Hz)
Identify Material Content & Construction 理想材料的配方和构造
Most Preferred
10
Subjective Rating Scale 主观评价等级表
Excellent; characteristic is noticed by some expert listeners under ideal listening conditions & can’t be improved.
120 kph Cruise on Smooth Road in Drive 在光滑路面上以120km/h的速度恒速行驶
city driving 城市环境中驾驶
road/tire 胎噪
road/tire & wind 胎噪和风噪
road/tire & wind 胎噪和风噪
Engine
Wide Open Throttle on Smooth Road in Second 发动机噪声 两档全全油门加速测试
20
Dyno-Drive: Powertrain & Road/Tire Dyno-Neutral: Road/Tire
64.0 dB(A) 61.0 %AI 63.0 dB(A) 66.5 %AI
15
10
50 7080 100
200 300 400 500 700 1000
2000 3000 4000 6000 10000
1.) Measure the NVH Sources: Powertrain, Road/Tire and Wind. 噪声源：发动机噪声、胎噪和风噪 2.) Use operating conditions which bring out the best and worst NVH attributes. 通过各种操作条件来获取不同的NVH属性。
Pa dB(A)
Driver's Right Ear@ 80 Kph in Drive on the Road
65 60
55 50 45 40
35 30 25 20
15
Smooth Road 59.7 dB(A) 93.4 %AI
10
Coarse Road 65.6 dB(A) 84.6 %AI
5
10
dB(A) Pa
500
450
400
350
300
4.00
250
200
150
2.00
100
50 0 1000
1500
2000
2500
3000
rpm
3500
20 4000 4400
8
Orders Can Reveal Powertrain Issues 各个阶次可以揭示动力系统问题
Driver's Right Ear @ Second Gear Part Throttle Run Up on Smooth Rolls
Trunk Floor 行李箱地毯
Headliner顶衬
Dash Insulator
Trunk Trim
前围隔热垫
行李箱盖饰板
Test Functional Value 测试基准数值
Assess Design Intent 评估设计目的
Estimate Cost 估计成本 Measure Mass 测量重量
3.) Collect NVH data which is useful for setting targets, and reveals potential design improvements. 收集对设计目标及设计改进有用的NVH数据。
4.) Select and test “Image Vehicles” which emulate the NVH performance being sought. 选择并测试一辆性能较好的车型，寻找一个较好的NVH性能方案。
Part Throttle on Smooth Road in Second、 两档半油门加速测试
Engine 发动机噪声
Coast Down on Smooth Road in Neutral 空挡减速测试
road/tire 胎噪
Stationary Vehicle at Idle in Drive & Neutral 怠速测试（行车怠速和驻车怠速）
1
2
Comparable Comparable
21/28 mpg
22/32 mpg
3501 lbs
3355 lbs
3761 lbs
5
5
5
Sport Utility Vehicle
5-Speed AWD Automatic
Sport Utility Vehicle
6-Speed AWD Automatic
Noise Data Measured outside
the vehicle
Possible Cavity Resonance
Organ Piping
High Frequency Tread Noise
Vehicle Tear Down 拆除车辆内饰件
Hood Insulator 机盖隔热垫
Package Tray 后搁板
65
Fourth Order
60
influences
overall level
55
here.
Second Order
50
Significant here.
45
Pa dB(A)
40
Overall Sound Level
35
Second Order Level
Fourth Order Level
30
1000 1250 1500 1750 2000 2250 2500 2750 3000 3250 3500 3750 4000 4250
Developing a NVH Package for the Vehicle
整车NVH声学包开发过程
Richard E. Wentzel 理查德
Wuxi Jixing Acoustic Auto Part Technology Co., Ltd. 无锡吉兴汽车声学部件科技有限公司
Set Aggressive but Realistic NVH Performance Targets 设定一个富有挑战但又切合实际的NVH性能指标
rpm
9
Selecting Image Vehicles 选择较好的车型
Item Price Fuel Economy Curb Weight Passengers
Body Style
Transm/27 mpg
Image Vehicle Image Vehicle
9
Very good; characteristic may be noticed by some expert listeners.
Engine 发动机噪声
Selecting A Suitable Test Road Surface 选择一个合适的测试路面
Driver's Right Ear @ 80 Kph On-The-Road
Pa dB(A)
60
55
50
45
40
35
30
25
20
15
Curve Smooth Road in Drive 58.3 dB(A) 93.4 %AI
5.) Benchmarking and vehicle tear-down reveals effective design approaches which minimize cost and weight. 通过基准测试来获得最优的成本和重量的方案。
On-Road Operating Conditions and Test Protocol 一般道路上车辆行驶条件和测试协议
20 30 40 50 60 80100
200 300 400 600 1000 2000 3000 5000 10000
Hz
NVH Engineers Inspecting a Rough Road Surface
Rough road 粗糙路面 smooth road 光滑路面
Instrumentation Set Up 测试仪器的设置
SIDI,DOHC, V VT Gasoline
Smooth Road光滑路面
Right Front Pass Right Ear @ 80 Kph Smooth Road
70 65
60
55
50
45
Pa dB(A)
40
35
30
25 Test Vehicle 63.9 dB(A) 68.7 %AI
20
Hz
The Color Plot For a Vehicle with a Quiet Powertrain 瀑布图
Driver Right Ear spl During a Part Throttle Run Up in Second Gear
800
55
750
700
650
600
8.00
550
frnt_CTR (CH5) Hz
60 kph Cruise on Smooth Road in Drive 在光滑路面上以60km/h的速度恒速行驶
60 kph Cruise on Rough Road in Drive 在粗糙路面上以60km/h的速度恒速行驶
80 kph Cruise on Smooth Road in Drive 在光滑路面上以80km/h的速度恒速行驶
Image Vehicle 2 69.9 dB(A) 76.1 %AI 20
15
50 63 79 99 125 157 198 250 315 397 500 630 794 1000
2000
4000
8000
1/3‐Octave Band Center Frequency (Hz)
Mechanisms for Road/Tire Noise 胎噪的原理
Image Vehicle 1 63.0 dB(A) 77.3 %AI
Image Vehicle 2 62.5 dB(A) 81.2 %AI
15
10
50 63 79 99 125 157 198 250 315 397 500 630 7941000
2000
1/3‐Octave Band Center Frequency (Hz)
Microphone Locations
麦克风车内的安装位置
Right Ear
Artifici al
Torso
Left Ear
Engine Mike
Driver Right Ear
2nd Row Left Passenger Left Ear
Record Tachometer and
Vehicle Speed 转速器传感器
Cargo
The Noise Source Contributions声源贡献量
Pa dB(A)
Right Front Passenger Right Ear @ 100 kph on Smooth Asphalt
70 65
60
55
50
45
40
35
30
25
Road-Drive: Wind, Powertrain & Road/Tire 68.6 dB(A) 55.0 %AI
Crossover
6-Speed FWD Automatic
Engine
180-hp, 2.4L 4-Cylinder Fuel
Injected Gasoline,
DOHC
240-hp, 3.0 L, V-6, Fuel Injected Gasoline
180-hp, 2.4 L 4-Cylinder
Wearable microphones enable Binaural data to be captured at the driver position during on-road tests. 头戴式麦克风可以获得驾驶员两耳位置的数据
人工头可以帮助我们在回放 噪声时能获取更精确的数据
Right Front Passenger Right Ear
4000
8000
Rough Road粗糙路面
Pa dB(A)
Right Front Pass Right Ear @ 80 Kph Rough Road
75 70
65
60
55
50
45
40
35
30 Test Vehicle 70.6 dB(A) 58.3 %AI
25
Image Vehicle 1 69.4 dB(A) 74.9 %AI
10
Coarse Road in Drive 63.-8 dB(A) 84.6 %AI -
5
4000
157 198 250 315 397 500 630 794 1000 1260 1587 2000 2520 3175 4000 5040 6350 8000
1/3-Octave Band Center Frequency (Hz)
Identify Material Content & Construction 理想材料的配方和构造
Most Preferred
10
Subjective Rating Scale 主观评价等级表
Excellent; characteristic is noticed by some expert listeners under ideal listening conditions & can’t be improved.
120 kph Cruise on Smooth Road in Drive 在光滑路面上以120km/h的速度恒速行驶
city driving 城市环境中驾驶
road/tire 胎噪
road/tire & wind 胎噪和风噪
road/tire & wind 胎噪和风噪
Engine
Wide Open Throttle on Smooth Road in Second 发动机噪声 两档全全油门加速测试
20
Dyno-Drive: Powertrain & Road/Tire Dyno-Neutral: Road/Tire
64.0 dB(A) 61.0 %AI 63.0 dB(A) 66.5 %AI
15
10
50 7080 100
200 300 400 500 700 1000
2000 3000 4000 6000 10000
1.) Measure the NVH Sources: Powertrain, Road/Tire and Wind. 噪声源：发动机噪声、胎噪和风噪 2.) Use operating conditions which bring out the best and worst NVH attributes. 通过各种操作条件来获取不同的NVH属性。
Pa dB(A)
Driver's Right Ear@ 80 Kph in Drive on the Road
65 60
55 50 45 40
35 30 25 20
15
Smooth Road 59.7 dB(A) 93.4 %AI
10
Coarse Road 65.6 dB(A) 84.6 %AI
5
10
dB(A) Pa
500
450
400
350
300
4.00
250
200
150
2.00
100
50 0 1000
1500
2000
2500
3000
rpm
3500
20 4000 4400
8
Orders Can Reveal Powertrain Issues 各个阶次可以揭示动力系统问题
Driver's Right Ear @ Second Gear Part Throttle Run Up on Smooth Rolls