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GB/T 12535-2021 PDF in English


GB/T 12535-2021 (GB/T12535-2021, GBT 12535-2021, GBT12535-2021)
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GB/T 12535-2021: PDF in English (GBT 12535-2021)

GB/T 12535-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
CCS T 04
Replacing GB/T 12535-2007
Test method of starting performance for motor vehicle
ISSUED ON: OCTOBER 11, 2021
IMPLEMENTED ON: MAY 01, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3 
1 Scope ... 6 
2 Normative references ... 6 
3 Terms and definitions ... 6 
4 Measurement parameters ... 7 
5 Test conditions ... 7 
6 Test methods ... 9 
7 Test records ... 12 
Appendix A (Informative) Test records ... 13 
Test method of starting performance for motor vehicle
1 Scope
This document specifies the measurement parameters, test conditions, test
methods, and test records of starting performance for motor vehicle.
This document applies to category M and N motor vehicles.
2 Normative references
The contents of the following documents, through normative references in this
text, constitute indispensable provisions of this document. Among them, for
dated references, only the edition corresponding to that date applies to this
document. For undated references, the latest edition (including all amendments)
applies to this document.
GB/T 12428 Laden mass calculating method for buses
GB/T 12534-1990 Motor vehicles - General rules of road test method
GB/T 15089 Classification of power-driven vehicles and trailers
GB/T 19596 Terminology of electric vehicles
3 Terms and definitions
The terms and definitions defined in GB/T 15089 and GB/T 19596 and the
following ones apply to this document.
3.1
Cranking time
The time from when the starter is turned on until the engine speed reaches the
idling speed specified by the manufacturer under the condition that the motor
vehicle’s engine is successfully started.
3.2
Starting performance
and thermal insulation devices (engine insulation cover, radiator insulation
device and battery incubator, etc.). However, the starting accessories shall be
the standard configuration of the vehicle manufacturer. It shall not use
configurations other than those specified by the manufacturer. During the test,
the auxiliary starting devices and the thermal insulation devices shall be
operated according to the instruction manual.
5.1.4 The battery, starting cable, and earthed cable specified by the vehicle
manufacturer shall be used. All circuits shall be connected reliably. The battery
shall work well. Before the vehicle starts to stand still, the electric quantity and
voltage of energy storage batteries such as the battery or power battery of the
vehicle shall be within the range specified by the vehicle manufacturer.
5.1.5 The parking brake of the test vehicle shall be released.
5.2 Test site
5.2.1 When the test is carried out outdoors, the road on which the test vehicle
is parked shall be level, solid, smooth and dry.
5.2.2 When the test is carried out indoors, the environmental test room shall
have facilities such as chassis dynamometer, low-temperature environment
chamber, and plateau environment chamber that meet the test requirements.
5.3 Test mass and load distribution
5.3.1 For category M1 vehicles, and category N1 vehicles with a maximum
design total mass less than 2000 kg, it shall be in accordance with the following
requirements:
- When 50% of the maximum allowable laden mass of the vehicle is less than
or equal to 180 kg, the test mass is the curb mass of the complete vehicle
plus 180 kg (including the mass of measuring personnel and instruments);
- When 50% of the maximum allowable laden mass of the vehicle is greater
than 180 kg, the test mass of the vehicle is the curb mass of the complete
vehicle plus 50% of the maximum allowable laden mass (including the
mass of measuring personnel and instruments). The load distribution shall
be as uniform as possible.
5.3.2 For category M2 and M3 vehicles, and category N vehicles with a
maximum design total mass not less than 2000 kg, it shall be in accordance
with the following requirements:
- Except for special provisions, 65% of the laden mass is applicable to
category M2 and M3 buses; other motor vehicles shall be fully loaded;
6.2.4.1 If the power source for cold starting is engine, carry out the test in
accordance with the provisions of 6.2.2.
6.2.4.2 If the power source for cold starting is power battery, carry out the test
in accordance with the provisions of 6.2.3.
6.2.5 Cold starting test of fuel cell electric vehicle
Start the vehicle in accordance with the vehicle manufacturer's recommended
starting procedures. Record the time from when the vehicle is powered on to
when the "READY" or "OK" signal device lights up.
6.3 Preheating test
6.3.1 Preheating test of internal combustion engine vehicle
After the engine is started, for motor vehicles with manual transmission, the
clutch can continue to be disengaged; the gear lever remains in neutral. For
motor vehicles with automatic transmission, the transmission remains in P
position. Idle in place for 5 min.
6.3.2 Preheating test of pure electric vehicle, extended-range electric
vehicle, and fuel cell electric vehicle
Pure electric vehicles, extended-range electric vehicles, and fuel cell electric
vehicles can directly enter the starting test without preheating test. If preheating
is required, the preheating time shall not exceed 5 min.
6.3.3 Preheating test of hybrid electric vehicle except extended-range
electric vehicle
6.3.3.1 If the power source for cold starting is engine, carry out the test in
accordance with the provisions of 6.3.1.
6.3.3.2 If the power source for cold starting is power battery, carry out the test
in accordance with the provisions of 6.3.2.
6.4 Starting test
6.4.1 After starting and preheating tests, put the vehicle in reverse gear and
start in reverse; travel no less than 3 m.
6.4.2 After parking, the motor vehicle starts in the lowest forward gear.
6.4.3 If any one of 6.4.1 and 6.4.2 fails, the item can be repeated once. If it still
fails to start, it is determined that the starting test has failed.
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.