GB/T 32085.1-2015 in English

《GB/T 32085.1-2015汽车 空调滤清器 第1部分：粉尘过滤测试》由TC114（全国汽车标准化技术委员会）归口，TC114SC25（全国汽车标准化技术委员会滤清器分会）执行，主管部门为工业和信息化部。
GB/T32085的本部分规定了汽车空调滤清器粉尘(包括灰尘和花粉等)过滤性能的试验方法。
本部分适用于流量150m3/h~680m3/h的汽车空调滤清器。

Automobiles - Cabin air filter - Part 1: Test for particulate filtration

1 Scope

This part of GB/T 32085 specifies the test for particulate (including dust, pollen, etc.) filtration of automobile cabin air filters.

It is applicable to automobile cabin air filters with flow rate of 150m3/h ~ 680m3/h.

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.

ISO 5011 Inlet air cleaning equipment for internal combustion engines and compressors - Performance testing
ISO 12103-1 Road vehicles - Test dust for filter evaluation - Part 1: Arizona test dust
EN 779 Particulate air filters for general ventilation - Determination of the filtration performance
EN 1822-1 High efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking
ASTM F-328 Standard practice for calibration of an airborne particle counter using monodisperse spherical particles
VDI 2066 Particulate matter measurement of flow gas

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1

test air flow rate

V

volume of test air passing through the filter section per unit time, expressed in cubic metres per hour (m3/h)

3.2

pressure loss

ΔPd

static pressure difference between the upstream and downstream sides of a filter, expressed in pascals (Pa)

3.3

initial pressure loss

ΔPA

pressure loss on both sides of a new filter or filter element, expressed in pascals (Pa)

3.4

final pressure loss

ΔPE

pressure loss on both sides of a filter or filter element after the dust addition procedure is completed, expressed in pascals (Pa)

3.5

filtration area

A

surface area of a filter or filter element for the purpose of filtration, expressed in square metres, m2

3.6

fractional efficiency

Ef(x)

ability to remove particles of a specified size

3.7

test dust-holding capacity

G

mass of test particulate collected from the test sample at the specified termination conditions (e.g. certain pressure loss) according to the test procedure in 8.3, expressed in grams (g)

4 Test conditions and test materials

4.1 Test conditions

4.1.1 Air condition

The temperature and relative humidity of air entering the air filter shall be (23±3)℃ and (50±2)% respectively. The above temperature and humidity shall be maintained during the whole process of testing the dust-holding capacity G of the filter. See Table D.2 for the summary of test conditions.

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Test conditions and test materials
5 Test equipment
6 Validation of the state of test device
7 Preparation of test sample
8 Test procedures
9 Test report
Annex A (Informative) Comparison between this part and ISO/TS 11155-1:2001 in clause/subclause number
Annex B (Informative) Technical differences between this part and ISO/TS 11155-1:2001 and their causes
Annex C (Normative) Test equipment and its specification
Annex D (Normative) Requirements, validation and routine operation of test equipment
Annex E (Normative) To-be-checked items in the test report
Bibliography