GB/T 24552-2009 PDF English
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GB/T 24552-2009 | English | 70 |
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Electric vehicles -- Windshield demisters and defrosters system -- Performance requirements and test methods
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GB/T 24552-2009: Electric vehicles -- Windshield demisters and defrosters system -- Performance requirements and test methods ---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT24552-2009
ICS 43.040.60
T 26
GB
National Standard
of the People’s Republic of China
Electric vehicles - Windshield demisters and
defrosters systems - Performance requirements
and test methods
Issued on. OCTOBER 30,2009
Implemented on. JULY 01, 2010
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization administration of the people’s republic of
China
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and Definitions... 4
4 Performance Requirements... 4
5 Test methods... 5
Foreword
This Standard was proposed by National Development and Reform
Commission.
This Standard shall be administrated by National Automotive Standardization
Technical Committee.
Drafting organization of this Standard. China Automotive Technology and
Research Center.
The main drafters of this Standard. He Yuntang, and Zhao Jingwei.
Electric vehicles - Windshield demisters and
defrosters systems - Performance requirements
and test methods
1 Scope
This Standard specifies performance requirements and test methods of electric
vehicles’ windshield demisters and defrosters systems.
This Standard applies to the Class M1 pure electric vehicles which use power
batteries as power source and which use demisters and defrosters systems.
2 Normative references
The provisions in following documents become the provisions of this Standard
through reference in this Standard. For dated references, the subsequent
amendments (excluding corrections) or revisions do not apply to this Standard,
however, parties who reach an agreement based on this Standard are
encouraged to study if the latest versions of these documents are applicable.
For undated references, the latest edition of the referenced document applies.
GB 11555 Passenger cars - Windshield demisters - Performance requirements
GB 11556 Passenger cars - Windshield defrosters - Performance requirements
GB/T 19596-2004 Terminology of electric vehicles
3 Terms and Definitions
The established terms and definitions in GB 11555 and GB 11556 apply to this
Standard.
4 Performance Requirements
Every electric vehicle shall be equipped with a set of defroster system and a
set of demister system.
5 Test methods
5.1 Conditions of defrosting test
5.1.1 Ambient temperature of test is -18ºC±3ºC.
5.1.5 The air velocity in cryogenic chamber shall be less than 2.2 m/s.
5.1.6 The power battery and auxiliary battery of electric vehicles shall be in
fully charged state (see 3.3.3.2.5 of GB/T 19596-2004).
5.1.7 During the whole testing period, defrosting device (controller) shall be
adjusted to maximum.
5.2 Deforesting test conditions
5.2.1 Test shall be done in the cryogenic chamber which can accommodate a
tested vehicle, and which can keep the temperature at -3ºC±1ºC.
5.2.2 Before testing, use alcohol containing methanol or similar detergents to
clean the windshield’ inner and outer surface. Sweep oil away thoroughly.
Clean it further after drying. Finally clean it with dry cotton cloth.
5.2.3 Measure the temperature of testing room and the cold air velocity timely.
5.2.4 Cold air velocity’s horizontal component in testing room shall be less than
2.2m/s.
5.2.5 During the test, apart from inlet and outlet of heat system and ventilating
system, all of battery compartment, car door and vent shall be closed. From
the beginning of the defrosting test, 1 or 2 car windows may be open. However,
the total opening gap shall be less than 25 mm.
5.3 Testing instruments and equipment
The testing instruments and equipment of demisting and defrosting shall
comply with the requirements of GB 11555 and GB 11556.
5.4 Determining of the Area A, B and A’
The area A, B and A’ of the test car’s windshield are determined by GB 11556.
5.5 Defrosting test procedure
5.5.1 The test car shuts down after entering cryogenic chamber. And it shall
park for 10h under the testing temperature.
5.6 Demisting test procedure
5.6.1 The steam generator shall be placed at the place where is near to the
back of front seat. And its outlet shall be at the center of the plane that is
580mm±80mm above the driver seat’s R point. If the seat back is adjustable,
then it shall be adjusted to predetermined angle. If the back of front seat can
not accommodate the steam generator, then it shall be placed at appropriate
position at where it may mostly meet the above requirements.
5.6.2 Drive the test car into testing room. Park it at the specified location.
Lower the temperature until all the coolant, lubricant and the interior
temperature in the car stay at -3ºC±1ºC.
5.6.3 Heat the steam generator which holds at least 1.7L water to boiling point.
After it becomes stable, put it into the car and close the door.
5.6.6 At 10min after the demisting test begins, record the condition of the test.
Depict the demisting trace or take pictures. Indicate the side where the driver
sits.
...... Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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