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This standard replaces GB/T 12535-1990 “Motor vehicle-starting performance-Test method”.
In view of the testing operability, the standard has made larger modification on technology out of date, laboratory environment, temperature conditions, and form of words criteria.
——Increase the environment temperature and make a clear scope:(-10 ± 2)℃; (-35 ± 2)℃
——Make clear that tests should be made in test chamber as much as possible; while large vehicles conforming to item 5.5 can do it outside the test chamber;
——Sample car should be vacant specified in Test conditions；
——Increase required dragging duration: general starting tests in fifteen seconds; cold start tests in thirty seconds.
Appendix A of this standard is informative
This standard was proposed by the National Development and Reform Commission.
This standard is under the jurisdiction of the National Technical Committee on Road Vehicles of Standardization Administration of China.
Drafting organization of this standard: National Automobile Quality Supervision Test Center (XiangFan)
Chief Drafting Staff: Zhu Xin
Previous edition of the standard replaced by this standard:
——GB 1334-1977
——GB/T 12535-1990
Motor Vehicle-Starting Performance-
Test Method
汽车起动性能试验方法
1 Scope
This standard specifies test methods of motor engine starting-up, warm up and departure.
This standard is applicable to all kinds of motor vehicles.
2 Normative References
The following standards contain provisions which, through references in this text, constitute provisions of this code. For dated reference, subsequent amendments (excluding corrigendum content) to, or revisions of, any of these publications do not apply. However, parties that enter into an agreement according to this standard are encouraged to study whether the latest edition of these documents can be used. For any undated references, the latest edition of the normative document referred to applies.
GB/T 12534-1990 Motor Vehicles-General Rules of Road Test Method
3 Terms and Definitions
The following terms and definitions are applicable to this standard.
Starting time
From starter's power on to engine start automatic running
4 Requirements of Instrument and Precision
a) Recorder (may records starting-up current, voltage, rotational speed and time automatically.
b) Ampere meter: (0 ~ 1 000 A; precision grade 2.5)
c) Voltmeter (0 ~30 V; precision grade 1.0)
d) Engine speed recorder (precision Grade I)
e) Thermometer ( -50℃ ~ 100℃; ± 1.5℃ or precision grade 1.5)
f) Thermal resistance (test air cooled engine and exhaust temperature) (precision grade 2.5) g) Electro-hydraulic densimeter (density ± 0.005).
h) Air pressure, humidity, and anemograph (precision grade 2.5).
i) Timer (0 ~ 24 H; ± 1 S and 0 ~60; ± 0.2 S).
5 Test Conditions
5.1 General test conditions and preparation of test vehicles are in accordance with the requirements of Sections 3.1, 3.2, 3.5, 4.1 and 4.2 in GB/T 12534 - 1990. Sample car should be in no-load state.
5.2 In different ambient temperature, fuel oil, engine oil and coolant of corresponding designation shall be selected and recorded according to the requirements of automobile operation instruction or relevant technical information.
5.3 Fit on dedicated starting accessories such as auxiliary starting units (fuel evaporator, fill in starting fluid apparatus, heating plug and heater etc.) and attemperator (engine blimp; radiator attemperator and storage battery insulation box etc.) according to the requirements of automakers when motor vehicle starts in different ambient temperature.
5.4 When firing cable and bonding electric cable, storage battery the manufacturer specified shall be used. Each line connects well and storage battery operates in good condition.
5.5 Test ambient temperature is-shown in Table 1
