GB/T 45627-2025Inspection specification for automobile climatic wind tunnel (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

Please note that some contents of this standard may involve patents. The issuing organization of this standard does not bear the responsibility for identifying patents.

This document was proposed by the China Machinery Industry Federation.

This document is under the jurisdiction of the National Industrial Process Measurement, Control and Automation Standardization Technical Committee (SAC/TC124).

This document was drafted by: Shanghai Satake Cooling and Heating Control Technology Co., Ltd., China Automotive Engineering Research Institute Co., Ltd., Xiangyang Daan Automobile Testing Center Co., Ltd., Dongfeng Motor Group Co., Ltd., Shanghai Institute of Metrology and Testing Technology, Shanghai Motor Vehicle Testing Center, China Automotive Technology and Research Center Co., Ltd., Chongqing Changan Automobile Co., Ltd., China First Automobile Co., Ltd., China Metrology Scientific Research Institute, Changchun Automobile Testing Center, Shanghai Jiaotong University, Chongqing University, Jilin University, Shanghai Automotive Group Co., Ltd. Technology Center, Geely Automobile Research Institute (Ningbo) Co., Ltd., Pan Asia Technical Automotive Center Co., Ltd., and Suzhou Satake Heating and Cooling Control Technology Co., Ltd.

The main drafters of this document are: Du Jun, Xu Lei, Zha Jiayun, Wang Xicheng, Sun Jian, Huang Li, Zhu Xiaoming, Mou Liansong, Feng Gang, Li Baoquan, Mao Xiaochen, Yu Guorui, Xu Dinghua, Zhang Hui, Chen Jiangping, Wang Yong, Hu Xingjun, Zhou Jian, Xie Gang, Qian Rui, Zhang Peng, Ding Ding.

Introduction

The automotive environmental wind tunnel test room integrates a variety of environmental simulation subsystems. It serves as a major test center for the development and performance testing of complete vehicles and parts.

In recent years, the wind tunnel test equipment has been built and applied on a large scale in China's automobile and auto parts industries.

The laboratory has many measuring instruments and systems for each subsystem, and the inspection of the automotive environmental wind tunnel laboratory is in its infancy in China, so it is necessary to establish and unify In order to standardize and unify the test methods of various parameters in the automobile environmental wind tunnel test room, it is necessary to standardize the test methods of various parameters in the automobile environmental wind tunnel test room.

The test methods of parameters are standardized.

This document provides information on the temperature, humidity, wind speed, road load, solar radiation, rain and snow involved in the automotive environmental wind tunnel test process.

The static and dynamic indicators of the environment simulation system, such as uniformity, stability, stabilization time, conversion rate and other parameters, are specified.

The test methods of the aerodynamic parameters of the simulation system, such as wind tunnel airflow deflection angle, boundary layer thickness, and static pressure gradient, were explained to provide a reference for the standardization.

Provide reference and guidance for testing the performance indicators of automotive environmental wind tunnel laboratories.

Technical Specifications for Automobile Environmental Wind Tunnel Test Laboratory

1 Scope

This document specifies the inspection regulations and inspection cycles for automotive environmental wind tunnel testing laboratories and describes the corresponding inspection methods.

This document is applicable to the inspection of automotive environmental wind tunnel test chambers, and is also applicable to the inspection of other similar test equipment.

The specified test method is used for various environmental simulation systems. the indication of parameters such as temperature, humidity, wind speed, solar radiation, rain and snow, and their uniformity and stability.

The test includes the test of wind tunnel airflow angle, boundary layer thickness and axial static pressure gradient.

2 Normative references

JJG518-2023

JJF1033-2023

3 Terms, definitions and symbols

The following terms, definitions and symbols apply to this document.