QC/T 1133-2020 English PDF (QCT1133-2020)

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QC/T 1133-2020: Commercial vehicles air filter safety element
QC/T 1133-2020
QC
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.060.20
T 13
Commercial vehicles air filter safety element
ISSUED ON: AUGUST 31, 2020
IMPLEMENTED ON: APRIL 01, 2021
Issued by: Ministry of Industry and Information Technology of PRC
Annex:
Number, name and date of implementation of 8 automobile industry
standards
No. Standard number Standard name
Replaced
standard number
Date of
implementation
166 QC/T 1131-2020
Methods of detecting polycyclic aromatic
hydrocarbons in automotive materials
2021-01-01
167 QC/T 1132-2020
Measurement methods of the noise of
electric power train system for electric
vehicles
2021-01-01
168 QC/T 1134-2020
Engine intake air water separation test
procedure
2021-01-01
169 QC/T 1133-2020
Safety filter element of air filter for
commercial automobile
2021-01-01
170 QC/T 770-2020 Dry air filter assembly for automobile QC/T 770-2006 2021-01-01
171 QC/T 1135-2020 Water filter for automobile engine 2021-01-01
172 QC/T 793-2020 Air filters for motorcycles and scooters QC/T 793-2007 2021-01-01
173 QC/T 794-2020
Internal-combustion engine industry filter
paper
QC/T 794-2007 2021-01-01
Table of Contents
Foreword ... 5 
1 Scope ... 6 
2 Normative references ... 6 
3 Terms and definitions ... 7 
4 Requirements ... 7 
5 Test method ... 9 
6 Inspection rules ... 10 
7 Marking, packaging, transportation, storage ... 11 
Commercial vehicles air filter safety element
1 Scope
This document specifies the technical requirements, test methods, inspection
rules, marking, packaging, transportation, storage of safety elements of
commercial vehicle air filters.
This document is applicable to safety elements of commercial vehicle air filters
(hereinafter referred to as filter elements), which have a volume flow of less
than 4000 m3/h. For the safety elements of air filters for construction machinery,
agricultural and forestry machinery, ships and stationary power, they may refer
to this document.
2 Normative references
The contents of the following documents constitute the indispensable clauses
of this document through normative references in the text. Among them, for
dated reference documents, only the version corresponding to that date is
applicable to this document; for undated reference documents, the latest
version (including all amendments) is applicable to this document.
GB/T 1184-1996 Geometrical tolerancing - Geometrical tolerance for
features without individual tolerance indications
GB/T 1804-2000 General tolerances - Tolerances for linear and angular
dimensions without individual tolerance indications
GB/T 1958 Geometrical product specifications (GPS) - Geometrical
tolerance - Verification
GB/T 2828.1 Sampling procedures for inspection by attributes -Part 1:
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 14656 Test method for burning behavior of flame-retardant paper and
board
QC/T 32-2017 Test methods of air cleaners for automobiles
element shall not be greater than 0.30 g/(m3 • min-1); the specific dust
penetration rate of the non-paper filter element shall not be greater than 0.70
g/(m3 • min-1).
4.6 Flame-retardancy
For filter elements used in special occasions (such as natural gas engines, etc.),
the flame-retardancy of the filter material used shall meet the following
requirements:
a) The average continuous burning time is not more than 5 s;
b) The average carbonization length is not more than 115 mm.
4.7 Folding distance and number of folds
4.7.1 The folding distance of the filter element shall be uniform. The maximum
folding distance of its unevenness, on the outer diameter of the filter element,
shall not be greater than 1.5 times the nominal folding distance. The minimum
folding distance shall not be less than 0.5 times the nominal folding distance.
4.7.2 Tolerance of number of folds of filter paper: For filter paper, which has a
number of folds of less than 50, the tolerance is ±2 folds; for filter paper, which
has a number of folds of 50 ~ 100, the tolerance is ±3 folds; for filter paper,
which has a number of folds of more than 100, the tolerance is ±4 folds.
4.8 Dimensional tolerance, shape, position tolerance
4.8.1 The dimensional deviation of the inner hole diameter of the filter element's
end cover shall meet the requirements of grade C in GB/T 1804-2000.
4.8.2 The height deviation of the filter element shall meet the requirements of
grade C in GB/T 1804-2000.
4.8.3 The perpendicularity deviation, BETWEEN the center line of the filter
element AND the end surface, shall meet the requirements of grade L in GB/T
1184-1996.
4.8.4 The parallelism tolerance of both ends of the filter element shall not be
greater than 1.5 mm. The measurement position shall be on the ring surface,
which is 10 mm away from the inner diameter of the filter element.
4.9 Appearance
4.9.1 The filter element shall be clean. The inner and outer surface shall be free
of dirt and impurities.
4.9.2 The metal parts, which are used in the filter element, shall be treated with
5.4.3 If the requirements of 5.1.5 (pre-filter dust removal) in QC/T 32-2017 are
applicable, it shall follow the requirements. In this test, the efficiency of the pre-
filter will be different from that under normal conditions; however, if it drops
significantly, it shall check the reason AND make records truthfully.
5.4.4 Collect the test dust, on the inner wall of the connecting pipe, between the
absolute filter and the test piece. Weigh it together with the absolute filter.
Calculate and determine the increase in the mass of the absolute filter.
5.4.5 Calculate the specific dust penetration according to formula (1):
Where:
SDP - Specific dust penetration, in grams per cubic meter per minute [g/ (m3
• min-1)]
D - The increase in the mass of the absolute filter (that is, the mass of dust
that passes through), in grams (g);
qve - The rated air volume flow, in cubic meters per minute (m3/min).
5.5 Flame-retardancy
Carry out the test according to the method specified in GB/T 14656.
5.6 Folding distance and number of folds
The folding distance is measured by a vernier caliper. The number of folds is
manually counted.
5.7 Dimensional tolerance, shape, position tolerance
The dimensional tolerances are measured by general measuring tools. The
shape and position tolerances are measured in accordance with GB/T 1958.
5.8 Appearance
The appearance quality is inspected visually.
6 Inspection rules
6.1 General
Each product can only exit-factory, after passing the inspection by the quality
inspection department AND be accompanied by a product certificate.