ISO TS 19713-2-2010 Road vehicles - Inlet air cleaning equipment for internal combustion engines and compressors - Part 2 Fractional efficiency testing with coa.pdf

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1、 Reference number ISO/TS 19713-2:2010(E) ISO 2010TECHNICAL SPECIFICATION ISO/TS 19713-2 First edition 2010-07-15 Road vehicles Inlet air cleaning equipment for internal combustion engines and compressors Part 2: Fractional efficiency testing with coarse particles (5 m to 40 m optical diameter) Vhicu

2、les routiers quipement dpuration dair dentre pour moteurs combustion interne et compresseurs Partie 2: Contrle defficacit fractionnelle avec grosses particules (diamtre optique de 5 m 40 m) ISO/TS 19713-2:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes

3、licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. Th

4、e ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care ha

5、s been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2010 All rights reserved. Unless otherwise specified, no par

6、t of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 5

7、6 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2010 All rights reservedISO/TS 19713-2:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms an

8、d definitions .1 4 Test equipment, accuracy and validation.4 4.1 Measurement accuracy.4 4.2 Test stand configuration.5 4.3 Test conditions 12 4.4 Validation13 4.5 Reference air cleaner assemblies/air filter elements.14 4.6 Routine operating procedure .14 5 Fractional efficiency test 14 5.1 General .

9、14 5.2 Test procedure.15 Annex A (informative) Test report .17 Annex B (normative) Efficiency data reduction.19 Annex C (normative) Pressure loss data reduction 26 Annex D (informative) Determination of maximum efficiency aerosol concentration.27 Annex E (normative) Accuracy requirements, validation

10、 and routine operation.28 Annex F (informative) Particle diameters .31 Annex G (normative) Aerosol isokinetic sampling33 Annex H (normative) Fractional efficiency.36 Bibliography37 ISO/TS 19713-2:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardization)

11、 is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be repre

12、sented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are

13、 drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Internationa

14、l Standard requires approval by at least 75 % of the member bodies casting a vote. In other circumstances, particularly when there is an urgent market requirement for such documents, a technical committee may decide to publish other types of document: an ISO Publicly Available Specification (ISO/PAS

15、) represents an agreement between technical experts in an ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the parent committee casting a vote; an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical co

16、mmittee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a vote. An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for a further three years, revised to become an International Standard, or withdrawn. If

17、 the ISO/PAS or ISO/TS is confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an International Standard or be withdrawn. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO

18、 shall not be held responsible for identifying any or all such patent rights. ISO/TS 19713-2 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 7, Injection equipment and filters for use on road vehicles. ISO/TS 19713 consists of the following parts, under the general titl

19、e Road vehicles Inlet air cleaning equipment for internal combustion engines and compressors: Part 1: Fractional efficiency testing with fine particles (0,3 m to 5 m optical diameter) Part 2: Fractional efficiency testing with coarse particles (5 m to 40 m optical diameter) ISO/TS 19713-2:2010(E) IS

20、O 2010 All rights reserved vIntroduction The engine air cleaner/filter fractional efficiency test methods described in this part of ISO/TS 19713 have been developed to cover traditional and new particulate air filters in order to remove airborne contaminants specifically to protect the engine. Air c

21、leaner fractional efficiency is one of the main air cleaner performance characteristics. This part of ISO/TS 19713 has been established to address the measurement of this parameter. The objective of the procedure is to maintain a uniform test method for evaluating fractional efficiency of air cleane

22、rs and air filters on specified laboratory test stands. The data collected in accordance with this part of ISO/TS 19713 can be used to establish fractional efficiency characteristics for air cleaners and filters tested in this manner. The actual field operating conditions (including contaminants, hu

23、midity, temperature, mechanical vibration, flow pulsation, etc.) are difficult to duplicate. However, with the procedure and equipment set forth, comparison of air filter fractional efficiency can be made with a high degree of confidence. TECHNICAL SPECIFICATION ISO/TS 19713-2:2010(E) ISO 2010 All r

24、ights reserved 1Road vehicles Inlet air cleaning equipment for internal combustion engines and compressors Part 2: Fractional efficiency testing with coarse particles (5 m to 40 m optical diameter) 1 Scope This part of ISO/TS 19713 describes laboratory test methods to measure engine air cleaner and

25、filter performance by fractional efficiency tests for particles from 5 m to 40 m, using ISO 12103-1 test dusts. Performance includes, but is not limited to, airflow restriction or pressure loss, initial and incremental fractional efficiencies during dust loading. ISO/TS 19713-1 describes fractional

26、efficiency tests for particles from 0,3 m to 5 m optical diameter. 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 docu

27、ment (including any amendments) applies. ISO 5011:2000, 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 3 Terms and definitions For the purposes of this document, the

28、 following terms and definitions apply. 3.1 air cleaner assembly assembly which includes the air cleaner housing and the air filter element 3.1.1 single-stage air cleaner air cleaner which does not incorporate a separate pre-cleaner 3.1.2 multistage air cleaner air cleaner consisting of two or more

29、stages, the first usually being a pre-cleaner, followed by one or more filter elements NOTE If two elements are used, the first is called the primary element and the second is called the secondary element. ISO/TS 19713-2:2010(E) 2 ISO 2010 All rights reserved3.1.3 pre-cleaner device usually using in

30、ertial or centrifugal means to remove a portion of the test dust before reaching the filter element 3.2 air filter element actual filter supported and sealed within the air cleaner assembly 3.3 test airflow rate measure of the volume of air passing through the test duct per unit time NOTE The test a

31、irflow rate is expressed in cubic metres per second. 3.4 pressure loss permanent pressure reduction due to a decrease in the flow energy (velocity head) caused by the filter (Pa at standard conditions of 20 C and 101,3 kPa) 3.5 fractional efficiency E f,iability of the air filter to remove particles

32、 of a specified size expressed as a percentage for particle size i 1, 2, f, 1, 100 ii i i CC E C = (1) where C 1,iis the number of particles per unit volume of specified size, i, upstream; C 2,iis the number of particles per unit volume of specified size, i, downstream NOTE Fractional efficiency is

33、expressed in percent. 3.6 fractional efficiency before dust loading efficiency before the collected particles have any measurable effect on the efficiency of the filter under test NOTE The collected particles can affect the measured filter efficiency before enough aerosol is collected to have any me

34、asurable effect on the filter pressure loss. 3.7 incremental fractional efficiency efficiency, determined at the specified flow rate as a function of particle size at 10 %, 25 %, 50 % and 100 % of filter life, which is determined by pressure loss across the filter as the filter is loaded with ISO 12

35、103-1 test dust NOTE 1 The values of filter pressure loss, P i , at which the incremental fractional efficiencies are measured can be calculated from odo () ii P PLPP = + (2) where P ois the initial pressure loss; ISO/TS 19713-2:2010(E) ISO 2010 All rights reserved 3 L iis the fraction of filter lif

36、e; P dis the specified terminal pressure loss. NOTE 2 If necessary, the requester and the tester can agree upon different criteria for incremental fractional efficiency. 3.8 fractional penetration P f,iratio of the concentration of particles of specified size exiting the filter to the concentration

37、of particles of specified size entering the filter expressed in a percentage for particle size i f, f, 100 ii PE = (3) NOTE Fractional penetration is expressed in percent. 3.9 test dust loading mass of test dust collected by the air cleaner assembly or air filter element at a specified flow rate exp

38、ressed in grams 3.10 particle measurement device aerosol spectrometer instrument for sizing, or counting, or sizing and counting, aerosol particles NOTE Recommended particle counters are optical particle counters (OPC) or other counters demonstrating good correlation in measuring particle sizes, e.g

39、. aerodynamic particle counters (APC). 3.11 test aerosol particles suspended in air, used for filter efficiency evaluation or dust loading 3.11.1 fractional efficiency test aerosol aerosol used to measure the efficiency of the test filter, the concentration of which is low enough to prevent coincide

40、nce-related errors in the particle counters, and does not change the filter efficiency due to loading NOTE The aerosol charge is reduced so that it approximates a Boltzman equilibrium charge distribution. The requirements for the efficiency challenge aerosol are given in 4.2.10 and 4.2.11. 3.11.2 lo

41、ading test aerosol aerosol used to load the filter, the concentration of which is high enough to allow loading of the filter in a reasonable amount of time NOTE The requirements for the loading test aerosol are given in 4.2.13.2. 3.12 correlation ratio R ratio of the number of particles observed at

42、the downstream sampling location to the number of particles at the upstream sampling location when no filter is installed in the test system NOTE 1 This number can be greater or less than 1. NOTE 2 The method of calculating the correlation ratio is given in Annex B. ISO/TS 19713-2:2010(E) 4 ISO 2010

43、 All rights reserved3.13 log mean diameter D l,iweighted mean diameter calculated by () 1/2 l, 1 iii DDD + = (4) where D iis the lower threshold of particle size range; D i+1is the upper threshold of particle size range 3.14 geometric (volume equivalent) diameter D g,idiameter of a sphere with the s

44、ame volume as the particle being measured NOTE For a spherical particle, it is the diameter of the sphere. 3.15 optical (equivalent) diameter D o,idiameter of a particle of the type used to calibrate an optical sizing instrument that scatters the same amount of light as the particle being measured N

45、OTE Optical diameter depends on the instrument, the type of particle used to calibrate the instrument (usually polystyrene latex spheres), the optical properties of the particle being measured, and the size of the particle. 3.16 aerodynamic (equivalent) diameter D aediameter of a sphere of density 1

46、 g/cm 3with the same terminal velocity as the particle being measured, due to gravitational force in calm air NOTE 1 The aerodynamic diameter will be used to report results to avoid different diameter measures due to different sizing and counting techniques. NOTE 2 Annex F provides additional inform

47、ation about aerodynamic diameter. 3.17 high efficiency particulate air HEPA filter having 99,95 % efficiency at most penetrating particle size (class H13 in accordance with EN 1822), or 99,97 % (or higher) fractional efficiency at 0,3 m using DOP aerosol as defined by IEST RP-CC001 recommended pract

48、ice 3.18 neutralization aerosol whose charge distribution is reduced until it provides a Boltzman equilibrium charge distribution 4 Test equipment, accuracy and validation 4.1 Measurement accuracy Accuracy requirements are given in Table E.1. ISO/TS 19713-2:2010(E) ISO 2010 All rights reserved 54.2

49、Test stand configuration 4.2.1 General Complete vehicle manufacturer air cleaner assemblies or individual air filter elements may be tested. The test stand shall consist of the following major components and shall be arranged as shown in Figure 2. NOTE 1 Results can vary depending on configuration. NOTE 2 Air cleaner assembly orientation will affect performance. It is advisable that air cleaner assemblies be oriented and tested as installed in the vehicle. Figure 2 shows