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This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization — Part 1: Rules for the structure and drafting of standardizing documents.
This document replaces GB/T 12535-2007 Motor vehicle — Starting performance — Test method. In addition to editorial changes, the following main technical changes have been made with respect to GB/T 12535-2007:
a) The term and definition of "cranking time" has been changed (see 3.1 herein; Clause 3 of Edition 2007);
b) The term and definition of "starting performance" has been added (see 3.2 herein);
c) The term and definition of "starting time" has been added (see 3.3 herein);
d) The requirements for "measured parameters" have been changed (see Clause 4 herein; Clause 4 of Edition 2007);
e) The detailed requirements for test sites have been added (see 5.2 herein);
f) The requirements for vehicle test quality have been changed (see 5.3 herein; 5.1 of Edition 2007);
g) The requirements for low temperature environment in the test have been changed (see 5.4.1 herein; 5.5 of Edition 2007);
h) The requirements for low temperature environment in the test of new energy vehicles have been added (see 5.4.1 herein);
i) The requirements for plateau environment in the test have been added (see 5.4.2 herein);
j) The requirements for general requirements for test methods have been added (see 6.1 herein);
k) The standing conditions of cold starting have been changed (see 6.2.1.1 herein; 6.1.2 of Edition 2007);
l) The operation requirements for cold starting have been added (see 6.2.1.2 and 6.2.1.3 herein);
m) The requirements for starting times and cranking time have been changed (see 6.2.2 herein; 6.1.4 of Edition 2007);
n) The requirements for starting performance of new energy vehicles have been added (see 6.2.3 to 6.2.5 herein);
o) The requirements for warm-up test have been changed (see 6.3 herein; 6.2 of Edition 2007);
p) The requirements for starting performance of reverse start have been added (see 6.4.1 herein);
q) The requirements for forward start have been changed (see 6.4.2 and 6.4.3 herein; 6.3.1 and 6.3.2 of Edition 2007);
r) The requirements for starting performance of internal combustion engine vehicles (including bi-fuel vehicles) other than gasoline and diesel have been added (see 6.5 herein);
s) The records of abnormal phenomena during the test have been added (see 6.6 herein);
t) The test record table in Annex A has been changed (see Annex A herein; Annex A of Edition 2007);
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This standard was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This standard is under the jurisdiction of the National Technical Committee of Auto Standardization (SAC/TC 114).
The previous editions of this standard are as follows:
——It was first issued as GB 1334-1977 in 1977;
——The first revision was in 1990. The standard number was changed to GB/T 12535, and the standard name was changed to Motor vehicle — Starting performance — Test method. The second revision was in 2007;
——This is the third revision.
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 is applicable to motor vehicles of Categories M and N.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 12428 Laden mass calculating method for buses
GB/T 12534 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
For the purposes of this document, the terms and definitions given in GB/T 15089 and GB/T 19596 and the following apply.
3.1
cranking time
time from the starter on to the engine speed reaching the idle speed specified by the manufacturer, under the condition of successful starting of motor vehicle engine
3.2
starting performance
maneuverability of the motor vehicle which is characterized by its starting time, start driving and other performances, after standing in an environment with a certain temperature and atmospheric pressure as required
3.3
starting time
total time from the cold starting of the motor vehicle to the completion of warm-up and start
4 Measurement parameters
See Table 1 for the test measurement parameters as well as their unit and accuracy.
Table 1 Measurement parameters as well as their unit and accuracy
Measurement parameters Unit Accuracy
Time S ±0.1
Voltage V 1%
Current A 1%
Rotate speed r/min 1%
Temperature °C 1.5%
Atmospheric pressure kPa 0.25%
Vehicle speed km/h 1%
Wind velocity m/s 0.5%
Altitude m 10 m
Mass kg 1%
5 Test conditions
5.1 Test vehicle
5.1.1 The test vehicle shall be prepared according to the requirements of 3.2, 3.5, 4.1 and 4.2 in GB/T 12534-1990.
5.1.2 Under different environmental conditions, the corresponding brands of fuel, engine oil, transmission oil, power steering oil, transfer case oil, clutch oil, coolant, brake fluid, etc. shall be selected according to the motor vehicle operation instructions or relevant technical data.
5.1.3 For starting under different environmental conditions, auxiliary starting devices (fuel evaporator, filling primer fluid device, glow plug and heater, etc.) and heat insulation devices (engine heat insulation cover, radiator heat insulation device and battery heat insulation box, etc.) may be used according to the regulations of motor vehicle manufacturers. However, the starting accessory shall be the standard configuration of the motor vehicle manufacturer, and the configuration other than that specified by the manufacturer shall not be used. During the test, the auxiliary starting device and heat insulation device shall be operated according to the operating instructions.
5.1.4 Battery, starting cable and earthed cable specified by the motor vehicle manufacturer shall be used. Each line shall be connected reliably and the battery shall work well. Before the vehicle starts to stand still, the electric quantity and voltage of the storage battery or power battery of the vehicle shall be within the range specified by the motor vehicle manufacturer.
5.1.5 The parking brake of the test vehicles shall be released.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Measurement parameters
5 Test conditions
6 Test methods
7 Test records
Annex A (Informative) Test record
