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TCSAE127-2020 English PDF

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US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
TCSAE127-2020: Measurement conditions for noise emitted by light-duty vehicles

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
T/CSAE 127-2020	209	Add to Cart	3 days	Measurement conditions for noise emitted by light-duty vehicles

Similar standards

T/CSAE 159 QC/T 1029 QC/T 797 T/CSAE 126 T/CSAE 125 T/CEC 127

Basic data

Standard ID: T/CSAE 127-2020 (T/CSAE127-2020)
Description (Translated English): Measurement conditions for noise emitted by light-duty vehicles
Sector / Industry: Chinese Industry Standard
Classification of Chinese Standard: T40
Word Count Estimation: 8,898
Date of Issue: 23/4/2020
Date of Implementation: 23/4/2020
Issuing agency(ies): China Society of Automotive Engineers

TCSAE127-2020: Measurement conditions for noise emitted by light-duty vehicles

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
T/CSAE 127-2020 Measurement conditions for noise emitted by light-duty vehicles ICS 43.020 T 40 Group standard Measurement conditions of light-duty vehicle exterior noise 2020-04-23 release 2020-04-23 Implementation Issued by Chinese Society of Automotive Engineering

Foreword...II 1 Scope...1 2 Normative references...1 3 Terms and definitions...1 4 Composition of working conditions...3

Foreword

This standard is compiled in accordance with the rules given in GB/T 1.1-2009 "Guidelines for Standardization Part 1.Standard Structure and Compilation". Some content of this standard may involve patents, and the issuing organization of this standard does not bear the responsibility for identifying these patents. This standard was proposed by the Automotive Environmental Protection Technology Branch of China Automotive Engineering Society. Drafting organizations of this standard. China Automotive Technology Research Center Co., Ltd., SAIC-GM-Wuling Automobile Co., Ltd., Beiqi Foton Motor Automobile Co., Ltd., Pan Asia Automotive Technology Co., Ltd. The main drafters of this standard. Hu Xi, Liu Yu, Yu Han Zhengnan, An Xiaopan, Xie Dongming, Cao Lijuan, Lu He, Li Jingyuan, Fu Tieqiang, Li Mengliang, Zeng Xiurong, Wang Yue, Wang Xiufeng. This standard is formulated for the first time. Measurement conditions of light-duty vehicle exterior noise

1 Scope

This section specifies the composition of light-duty vehicle exterior noise measurement conditions. This Part applies to M1, N1 and M2 vehicles with a maximum design total mass of not more than 3500 kg.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. GB 1495 Limits and measurement methods of noise outside the vehicle during acceleration GB 1589 Road vehicle outline size, axle load and mass limit GB/T 3730.2 Road Vehicle Quality Vocabulary and Code GB/T 12534 General Rules for Automobile Road Test Methods GB/T 12547 Lowest stable vehicle speed test method GB/T 15089 Classification of motor vehicles and trailers GB/T 15173 Electroacoustic Sound Calibrator GB/T 17692 Test Method for Net Power of Automobile Engine ISO 10844.2014 Acoustic measurement of road vehicle noise requirements for test road surfaces

3 Terms and definitions

3.1 Measurement condition Performance requirements and test methods for vehicle noise measurement. 3.2 Test vehicle speed target velocity (vtarget) When the vehicle performs noise measurement under specific working conditions, it requires a stable vehicle speed as close as possible. The unit is km/h. 3.3 Vehicle reference point Engine (drive motor) front car. the front end of the car; engine (drive motor) mid-mounted car. the center point of the car in the front and rear direction Engine (drive motor) rear-mounted car. the rear end of the car. Note. For electric vehicles, the position of the main drive motor should be considered, and the vehicle reference point position should be determined according to the above rules; if there are multiple drive motors and power If they are equal, the position of the most front-end drive motor shall prevail. 3.4 Vehicle driving centerline (CC′) The marking line along which the vehicle is driving on the test site. see picture 1. 3.5 Acceleration start line (AA′) The marking line perpendicular to the center line of the vehicle on the test site marks the beginning of the noise measurement area; see Figure 1. 3.6 Accelerated terminal line (BB′) The marking line perpendicular to the centerline of the vehicle on the test site marks the end of the noise measurement area; see Figure 1. 3.7 Microphone connection (PP′) The marking line perpendicular to the centerline of the vehicle on the test site marks the placement position of the microphone; see Figure 1. Dimensions unit. m The smallest standard measures driving lane, sound propagation area, microphone (height. 1.2m); ls is the acceleration connecting section, la is the minimum standard measurement driving lane extension length, (length. 5m) Figure 1 The layout of the test site, measurement area and microphone 3.8 Test velocity (vtest) The speed when the vehicle passes the PP' line during noise measurement, in km/h. 3.9 Starting acceleration upper limit (as, max) The acceleration value that cannot be exceeded when starting noise measurement on the test road, in m/s2. 3.10 Starting acceleration lower limit (as, min) The acceleration value that cannot be lower than when starting noise measurement on the test road, in m/s2. 3.11 Upper limit of acceleration in test speed range (av,max) The acceleration value that cannot be exceeded when the acceleration noise is measured at the specified vehicle speed v (km/h) on the test road, in m/s2. 3.12 Lower limit of acceleration in test speed range (av,min) The acceleration value that cannot be lower than the specified vehicle speed v (km/h) for accelerating noise measurement on the test road, in m/s2. 3.13 Test acceleration (av,test) On the test road, use the specified vehicle speed v (km/h) to measure the acceleration when accelerating noise, in m/s2. 3.14 Number of gears (Ngear) The total number of forward gears of the test vehicle.

4 Composition of working conditions

4.1 Measurement conditions under starting conditions The test vehicle adopts 1st gear (or D gear position), starting from the reference point of the vehicle at a distance of no less than 5 m from the AA' line, and passing the AA' line to start noise Acoustic measurement, through the measurement area, to the BB' line to end the noise measurement, the longitudinal center plane is close to the CC' line. The vehicle acceleration is not low during the measurement At 1 m/s2, not higher than 3 m/s2.The engine speed is not higher than 80% of the rated speed. 4.2 Measurement conditions under accelerated driving conditions The noise measurement outside the accelerating vehicle is carried out according to the following procedure. a) The reference point of the test vehicle is close to the line AA' to start the noise measurement, and the vehicle accelerates straight through the measurement area until the line BB' ends the noise measurement; When the reference point of the vehicle passes the PP' line, the actual measured speed is (30±2) km/h, and its longitudinal center plane is close to the CC' line; The acceleration of the vehicle is controlled between 0.5 m/s2 and 3.5 m/s2; and the engine speed is not higher than 80% of the rated speed; the test gear is (1 Ngears/2)/2 round up; b) The reference point of the test vehicle is close to the line AA' to start the noise measurement, and the vehicle accelerates straight through the measurement area to end the noise measurement on the line BB'; When the reference point of the vehicle passes through the PP' line, the measured speed is (50±2) km/h, and its longitudinal center plane is close to the CC' line; The acceleration of the vehicle is controlled between 0.35 m/s2 and 3 m/s2; and the engine speed is not higher than 80% of the rated speed; the test gear is (Ngears/2) rounding upwards; c) The reference point of the test vehicle is close to the line AA' to start the noise measurement, and the vehicle accelerates straight through the measurement area until the line BB' ends the noise measurement; When the reference point of the vehicle passes through the PP' line, the actual measured speed is (70±2) km/h, and its longitudinal center plane is close to the CC' line; The acceleration of the vehicle is controlled below 2 m/s2; and the engine speed is not higher than 80% of the rated speed; the test gear is (Ngears/2 Ngears)/2 rounded up. For automatic transmission vehicles, the test gear is not required, only the test vehicle speed, acceleration, and rotational speed boundary conditions are required. 4.3 Measurement conditions under constant speed driving conditions The reference point of the test vehicle is close to the AA' line to start noise measurement, and the measured vehicle speed is uniform at (80±2)km/h and (100h±2)km/h respectively. Drive through the measurement area at a high speed until the BB' line ends the noise measurement; its longitudinal center plane should be close to the CC' line; the test gear is the highest gear (D position) during the measurement. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of TCSAE127-2020_English be delivered?

Answer: Upon your order, we will start to translate TCSAE127-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of TCSAE127-2020_English with my colleagues?

Answer: Yes. The purchased PDF of TCSAE127-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.