GB/T 5374-2023 English PDF (GBT5374-2023)

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GB/T 5374-2023: Test method of reliability for motorcycles and mopeds
GB/T 5374-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.140
CCS T 80
Replacing GB/T 5374-2008
Test method of reliability for motorcycles and mopeds
ISSUED ON: MARCH 17, 2023
IMPLEMENTED ON: OCTOBER 01, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Test conditions ... 7
5 Test procedure ... 8
6 Test data processing ... 16
7 Test report ... 20
Appendix A (Normative) Routine operation ... 21
Appendix B (Informative) Failure classification principle ... 22
Appendix C (Informative) Customer usage correlation proving ground road driving
reliability test specification design ... 23
Appendix D (Normative) Vehicle daily operation inspection items and reliability
driving records ... 26
Appendix E (Informative) Test record form ... 28
Test method of reliability for motorcycles and mopeds
1 Scope
This document specifies the test conditions, test procedure, test data processing and test
report for the reliability test of motorcycles and mopeds.
This document applies to the reliability test of motorcycles and mopeds (unless
otherwise specified, hereinafter referred to as “motorcycles”).
2 Normative references
The following documents are referred to in the text in such a way that some or all of
their content constitutes requirements of this document. For dated references, only the
version corresponding to that date is applicable to this document; for undated references,
the latest version (including all amendments) is applicable to this document.
GB 4569, Limit and measurement method of noise emitted by stationary -
Motorcycles and mopeds
GB/T 5359.1, Term for motorcycles and mopeds - Part 1: Types of vehicles
GB/T 5373, Measuring method of dimensions and masses parameter for motorcycles
and mopeds
GB/T 5378, Methods of road test for motorcycles and mopeds
GB/T 7031, Mechanical vibration - Road surface profiles - Reporting of measured
data
GB 7258, Technical specifications for safety of power-driven vehicles operating on
roads
GB 14622, Limits and measurement methods for motorcycle pollutant discharge
(China stage IV)
GB 15742, Performance requirements and test methods of horn for motor vehicles
GB 15744, The limits and measurement methods of fuel consumption for
motorcycles and mopeds
GB 16169, Limit and measurement method of noise emitted by accelerating -
Motorcycles and mopeds
GB 18176, Limits and measurement methods for emissions of pollutants from
mopeds (CHINA IV)
GB/T 18387, Limits and test method of magnetic and electric field strength from
electric vehicles
GB 20073, Performance and measurement method for braking of motorcycles and
mopeds
GB 24155, Safety specifications for electric motorcycles and electric mopeds
GB/T 24156, Electric motorcycles and electric mopeds - Power performance - Test
methods
GB/T 24157, Test methods of range and indication for the state of charge for electric
motorcycles and electric mopeds
GB 34660, Road vehicles - Requirements and test methods of electromagnetic
compatibility
JTG B01, Technical standard of highway engineering
QC/T 903, Fault-types for motorcycles and mopeds
3 Terms and definitions
Terms and definitions determined by GB/T 5359.1, and the following ones are
applicable to this document.
3.1 Reliability
The ability of motorcycles to ensure specified functions and technical and economic
indicators under specified conditions of use and within a specified period of time.
3.2 Customer usage correlation
Reproduce the working load of the target user on the proving ground or on the test
bench.
3.3 General reliability test
Reliability test carried out according to certain specifications on general roads.
3.4 Accelerated reliability test
Reliability test – with a certain strengthening factor – that is carried out on the proving
ground or on the test bench according to customer usage correlation.
4.2.4 Before the performance test, the vehicle under test shall be run-in and maintained
according to the instruction manual or the manufacturer’s product technical documents.
During the test, the parts and assemblies shall not be adjusted or replaced at will, and
detailed driving inspection records shall be made.
4.2.5 If the driving range of electric motorcycles and electric mopeds (hereinafter
referred to as “electric motorcycles”) is too short (less than 30 km), the battery pack
can be replaced for testing, which shall be recorded.
4.3 Test conditions for termination
If any of the following situations is found during the test, the test shall be terminated.
a) Steering, braking and other systems cannot ensure driving safety.
b) The frame or its welds are broken, de-soldered or otherwise damaged, so that the
test cannot be continued.
c) The assembly to be assessed in the test is severely damaged and needs to be
replaced.
4.4 Test road
4.4.1 The driving road for the reliability test shall generally include:
a) Urban road: main streets of communication in large and medium-sized cities; the
unevenness of the road surface shall be above grade C specified in GB/T 7031;
b) Expressway: multi-lane highway – meeting the requirements of JTG B01 – that
is exclusively for motor vehicles to drive in different directions and lanes, and
where all access and exit are controlled;
c) Ordinary highway: in line with the requirements of the national primary and
secondary highway, of wide and straight road surface, and good vision;
d) Mountain road: average slope greater than 4%, unevenness of road surface above
grade C specified in GB/T 7031.
4.4.2 The reliability test can be carried out on a closed road in the proving ground, or
on a road section with small traffic flow, which is convenient for driving speed and is
conducive to the safety of the test. When conditions permit, the road surface for the
reliability test can also be used for an accelerated reliability test to shorten the test cycle.
5 Test procedure
5.1 Vehicle parameter measurement and adjustment
5.1.1 Measurement of vehicle dimensions and masses parameter
Carry out measurement of vehicle dimensions and masses parameters in accordance
with the methods determined in GB/T 5373.
5.1.2 Key torque measurement and adjustment
According to the requirements of product technical documents provided by the
manufacturer, measure and adjust the torque of fasteners in key parts.
5.1.3 Running-in
5.1.3.1 Before running-in, check the indicated value of the speedometer according to
the provisions of GB/T 5378, and use it to correct the relevant mileage.
5.1.3.2 The vehicle under test shall run in on a flat road according to the provisions of
the product technical documents. The running-in mileage of motorcycles shall not
exceed 1 000 km; the running-in mileage of mopeds shall not exceed 250 km. It can
also be run-in to the specified mileage according to the requirements of the
manufacturer’s product technical documents.
5.1.3.3 During the running-in period, the fastening and working conditions of each part
of the vehicle shall be checked frequently, and any failure found shall be eliminated in
time and included in the failure statistics.
5.2 Vehicle performance test
5.2.1 Inspection before performance test
After running-in, maintain acc...