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GB/T 44084-2024: Weave test and transition test methods for the on-centre handling of heavy commercial vehicle
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| GB/T 44084-2024 | English | 379 |
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Weave test and transition test methods for the on-centre handling of heavy commercial vehicle
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GB/T 44084-2024
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PDF similar to GB/T 44084-2024
Standard similar to GB/T 44084-2024 GB/T 41600 GB/T 40507 GB 17675 GB/T 17346 Basic data | Standard ID | GB/T 44084-2024 (GB/T44084-2024) | | Description (Translated English) | Weave test and transition test methods for the on-centre handling of heavy commercial vehicle | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | T23 | | Word Count Estimation | 18,112 | | Date of Issue | 2024-05-28 | | Date of Implementation | 2024-09-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 44084-2024: Weave test and transition test methods for the on-centre handling of heavy commercial vehicle
---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.
ICS 43.040
CCST23
National Standards of People's Republic of China
Heavy commercial vehicle steering center area swing test and transition
experiment method
Released on 2024-05-28
2024-09-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
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.
This document is modified to adopt ISO 11012.2009 "Open-loop test method for maneuverability of heavy commercial vehicles and buses in the center of the steering area"
Experimentation and transitional testing.
Compared with ISO 11012.2009, this document has many structural adjustments. Comparison table of structural number changes between the two documents
See Appendix A.
The technical differences between this document and ISO 11012.2009 and their reasons are as follows.
--- The scope of application has been changed to be consistent with GB/T 15089 (see Chapter 1, Chapter 1 of ISO 11012.2009);
--- Replaced ISO 3833 with the normative reference GB/T 15089 (see Chapter 3);
--- Replaced ISO 8855 with the normative reference GB/T 12549 (see Chapter 3);
--- Replaced ISO 1176 with the normative reference GB/T 3730.2 (see Chapter 3);
--- Replaced ISO 15037-2 with the normative reference GB/T 40499-2021 (see Chapter 5, 7.2);
--- Increased the speed measurement range and maximum error requirements to meet the needs of measuring speed in the test (see Table 1);
--- Changed the steering wheel angle measurement range and maximum error requirements to cover the working range of the steering center area of domestic commercial vehicles (see
Table 1, Table 1 of ISO 11012.2009);
--- The test site requirements have been changed to be consistent with GB/T 40499-2021 (see 6.1, Chapter 7 of ISO 11012.2009);
--- Added atmospheric temperature requirements, consistent with GB/T 40499-2021 (see 6.2);
--- Changed the vehicle preheating requirements to be consistent with GB/T 40499-2021 (see 7.1, 8.2 of ISO 11012.2009);
--- Added normative references to GB/T 6323-2014 (see 7.3.2);
--- Added the requirements for the maximum peak value of lateral acceleration and signal acquisition cycle, which are consistent with GB/T 6323-2014 (see 7.3.2);
--- Change the note in 8.4 of ISO 11012.2009 to the main text (see 7.3.2).
The following editorial changes were made to this document.
--- Changed the description of the test record template (see Appendix B, Appendix A of ISO 11012.2009);
--- Added test result expression diagram (see Appendix C) for normative expression of test results.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This document is under the jurisdiction of the National Technical Committee on Automotive Standardization (SAC/TC114).
This document was drafted by. FAW Jiefang Automobile Co., Ltd., Jilin University, China Automotive Research Institute Automotive Inspection Center (Tianjin) Co., Ltd., BAIC Fu
Toyota Motor Co., Ltd., Dongfeng Commercial Vehicle Co., Ltd.
The main drafters of this document are. Cheng Chao, Guo Ping, Na Guangxin, Zheng Quanhui, Chen Mingzhe, Liang Rongliang, Zhang Yanping, Wang Zhe, Wang Jinsong, Liu Weichen,
Zou Wenbin, Guan Xin, Zhan Jun, Gao Yue, Guo Rui, Zhao Tao, Xu Xian, Sha Lei, and Wang Changqing.
Heavy commercial vehicle steering center area swing test and transition
experiment method
1 Scope
This document describes the test method for the sway test and transition test in the turning center area of heavy commercial vehicles.
This document is applicable to M3, N2 and N3 vehicles, and other types of vehicles shall refer to it.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 3730.2 Vocabulary and code for road vehicle masses (GB/T 3730.2-1996, idt ISO 1176.1990)
GB/T 6323-2014 Vehicle handling stability test method
GB/T 12549 Terms and definitions for vehicle handling stability
GB/T 15089 Classification of motor vehicles and trailers
GB/T 40499-2021 General conditions for heavy-duty vehicle handling stability tests (ISO 15037-2.2002, MOD)
3 Terms and definitions
The terms and definitions defined in GB/T 3730.2, GB/T 12549 and GB/T 15089 and the following apply to this document.
3.1
on-centrehandling
Objective assessment of the steering feel and steering accuracy of a vehicle when it is traveling in a straight line or passing through a large radius curve at high speed under low lateral acceleration.
describe.
3.2
ordinate dead zone ordinatedeadband
When the horizontal axis is zero, the width of the hysteresis curve in the vertical axis direction.
3.3
abscissadeadband
When the ordinate is zero, the width of the hysteresis curve in the abscissa direction.
3.4
Gradient
The rate of change of the variable curve in the ordinate direction corresponding to a unit change in the abscissa direction.
4 Measurement parameters
The following parameters need to be recorded during the test.
a) vehicle speed, vx;
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