QC/T 476-2007 English PDF (QCT476-2007)

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QC/T 476-2007: Rain proof performance limit and test method for bus
QC/T 476-2007
QC
AUTOMOTIVE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.080.20
T 42
Replacing GB/T 12480-1990, QC/T 476-1999
Rain proof performance limit and test method for bus
ISSUED ON. NOVEMBER 14, 2007
IMPLEMENTED ON. MAY 01, 2008
Issued by. National Development and Reform Commission
Attachment.
Numbers and Names of 30 Automotive Industry Standards
SN Standard Numbers Standard Names Replaced Standards
110 QC/T 476-2007 Rain Proof Performance Limit and Test Method for Bus
GB/T 12480-1990
QC/T 476-1999
111 QC/T 780-2007 Water Radiator Used in Motorcycles
112 QC/T 688-2007 General Specifications of Motorcycles and Mopeds QC/T 688-2002
113 QC/T 781-2007 Braking disc for motorcycles and mopeds
114 QC/T 634-2007 Vehicle Water - Heating Air Heater Mechanism QC/T 634-2000
115 QC/T 518-2007 Tightening Torque for Automotive Threaded Fasteners QC/T 518-1999
116 QC/T 323-2007 Motor Vehicles - Door Locks and Door Retention Components
QC/T 323-1999
QC/T 586-1999
117 QC/T 782-2007 Dump Cover-Specifications
118 QC/T 673-2007 Solenoid Valve of LPG Vehicles QC/T 673-2000
119 QC/T 674-2007 Solenoid Valve of CNG Vehicles QC/T 674-2000
120 QC/T 208-2007 Temperature Alarms for Automobile QC/T 208-1996
121 QC/T 783-2007 Speedometer Sensor for Automobile and Motorcycle
122 QC/T 727-2007 Instrument for Automobile and Motorcycle QC/T 727-2004
123 QC/T 213-2007 Automobile and Motorcycle Instrument Terminology QC/T 213-1996
124 QC/T 784-2007 Electroluminescent Screen for Automobile and Motorcycle Instrument
125 QC/T 217-2007 Pressure Alarms for Automobile QC/T 217-1996
126 QC/T 215-2007 Type Methodology for Automobile and Motorcycle Instrument QC/T 215-1996
127 QC/T 209-2007 Flexible Shaft for Automobile and Motorcycle QC/T 209-1996
128 QC/T 785-2007
Road Vehicles - Two-Stage Fuel Filters for
Compression-Ignition Engines-Mounting and
Connecting Dimensions
129 QC/T 786-2007
Diesel Engines-Heads for Fuel Filters with
Vertical Flange-Mounting and Connecting
Dimensions
130 QC/T 787-2007
Diesel Engines - Heads for Fuel Filters with
Horizontal Flange-Mounting and Connecting
Dimensions
131 QC/T 788-2007 Performance Requirements and Bench Test Methods of Automobile Pedal Device
132 QC/T 789-2007 Performance Requirements and Bench Test
Table of Contents
Foreword ... 6 
1 Scope ... 7 
2 Normative references ... 7 
3 Terms and definitions ... 7 
4 Rain proof performance limits for bus ... 8 
5 Test conditions ... 8 
6 Test methods ... 9 
7 Test result ... 12 
Annex A (normative) Raining device ... 13 
Annex B (normative) Adjustment of raining intensity ... 15 
Foreword
This Standard is an integrated revision to GB/T 12480-1990 “Rain proof
performance test method for buses” and QC/T 476-1999 “Rain proof
performance limit for buses”.
Compared with GB/T 12480-1990 and QC/T 476-1999, the main changes in
this Standard are as follows.
- modified the application scope of the standard;
- supplemented and modified some terms and definitions;
- modified the rain proof performance limit for bus;
- simplified, adjusted and supplemented test conditions, test methods;
- adjusted inspection items and deduction values;
- modified the requirements for raining device;
- modified the adjustment method and calculation method for raining intensity.
Annex A and Annex B of this Standard are normative.
This Standard was proposed by and shall be under the jurisdiction of National
Technical Committee on Automobiles of Standardization Administration of
China.
The drafting organizations of this Standard. National Car Quality Supervision
and Inspection Center, National Automobile Quality Supervision and Inspection
Center (Xiangfan), National Heavy Vehicle Quality Supervision and Inspection
Center, Nanjing Iveco Automobile Co., Ltd.
Main drafters of this Standard. Gu Jie, Wang Zuguo, Ruan Tingyong, Su Jiazhu.
Versions of standard substituted by this Standard are.
- GB/T 12481-1990, QC/T 476-1999;
- GB/T 12480-1990.
Rain proof performance limit and test method for bus
1 Scope
This Standard specifies the rain proof performance limit and test method for
bus.
This Standard is applicable to various buses specified in GB/T 3730.1-2001
“Motor vehicles and trailers - Types - Terms and definitions”. Special vehicles
modified by bus, cars with cabs and enclosed cars can be referred to this
Standard for implementation.
2 Normative references
The following referenced documents are indispensable for the application 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 3730.1-2001, Motor vehicles and trailers - Types - Terms and
definitions
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 rain proof performance for bus
the ability that the bus is at rest and all doors, windows and orifice covers are
closed under the specified artificial rain test conditions to prevent rainwater from
entering the compartment
3.2 seep
water slowly emerges from the gap and spreads around the inner surface of the
body
3.3 slow drop
water emerges from the gap, leaving at a rate less than or equal to 30 drops
per minute or intermittently falling along the inner surface of the body
± 1) mm/min. See Annex B for the adjustment method of raining intensity.
Regularly check whether the raining intensity meets the requirements.
6 Test methods
6.1 Park the test vehicle in a designated location in the raining site.
6.2 The tester enters the compartment and closes all doors, windows and orifice
covers.
6.3 Start the raining device. Perform the test after the raining state is stable.
The test time is 15min.
6.4 Five minutes after the start of the test, the tester begins to observe and
record the leakage of various parts of the compartment. If the leakage part is
covered by the inner guard, the inner guard of the part shall be removed. If the
leakage state cannot be determined, a rectangular metal sheet of appropriate
size may be used to closely contact the leaking portion, 45° downward from the
vertical plane, draining the leaking rainwater, and discriminating the leakage by
the state of the rainwater leaving the sheet.
6.5 For passenger bus with luggage compartments, the test personnel shall,
after the end of the test, wipe the water at the joints of the luggage compartment
doors, open the luggage compartment doors, observe and record the leakage
inside the luggage compartment. If there is water mark on the bottom of the
luggage compartment, each place shall be treated as slow drop.
6.6 Bus leakage is recorded in Table 2.