1、 Reference number ISO/TS 19713-1:2010(E) ISO 2010TECHNICAL SPECIFICATION ISO/TS 19713-1 First edition 2010-07-15 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) Vhicul
2、es routiers quipement dpuration dair dentre pour moteurs combustion interne et compresseurs Partie 1: Contrle defficacit fractionnelle avec particules fines (diamtre optique de 0,3 m 5 m) ISO/TS 19713-1:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes li
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7、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 19713-1:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and
8、definitions .1 4 Principle5 5 Test equipment, accuracy and validation.5 5.1 Measurement accuracy.5 5.2 Test stand configuration.5 5.3 Test conditions 13 5.4 Validation14 5.5 Reference air cleaner assemblies/air filter elements.15 5.6 Routine operating procedure .15 6 Fractional efficiency test 15 6.
9、1 General .15 6.2 Test procedure.16 7 Calculations and data acceptance criteria17 7.1 General .17 7.2 Symbols and subscripts.17 7.3 Test sequence18 7.4 Correlation ratio.20 7.5 Penetration/fractional efficiency20 7.6 Efficiency21 7.7 Data reduction .21 7.8 Procedure for loading and fractional effici
10、ency.28 7.9 Reporting results of loading tests .28 Annex A (informative) Test report .29 Annex B (normative) Poisson statistics .31 Annex C (normative) Pressure loss data reduction 33 Annex D (informative) Determination of maximum efficiency aerosol concentration.34 Annex E (normative) Accuracy requ
11、irements, validation and routine operation.35 Annex F (normative) Aerodynamic diameter .38 Annex G (normative) Method to test efficiency aerosol for proper neutralization 40 Annex H (normative) Leakage .47 Annex I (informative) Aerosol isokinetic sampling49 Bibliography52 ISO/TS 19713-1:2010(E) iv I
12、SO 2010 All rights reservedForeword ISO (the International Organization for Standardization) 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
13、 in a subject for which a technical committee has been established has the right to be represented 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 Comm
14、ission (IEC) on all matters of electrotechnical standardization. International Standards are 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 technic
15、al committees are circulated to the member bodies for voting. Publication as an International 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
16、 decide to publish other types of document: an ISO Publicly Available Specification (ISO/PAS) 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 Te
17、chnical Specification (ISO/TS) represents an agreement between the members of a technical committee 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 confir
18、med for a further three years, revised to become an International Standard, or withdrawn. If 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 pos
19、sibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO/TS 19713-1 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 7, Injection equipment and filters fo
20、r use on road vehicles. ISO/TS 19713 consists of the following parts, under the general title 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 effic
21、iency testing with coarse particles (5 m to 40 m optical diameter) ISO/TS 19713-1:2010(E) ISO 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 ai
22、r filters in order to remove airborne contaminants specifically to protect the engine. Air cleaner 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 proce
23、dure is to maintain a uniform test method for evaluating fractional efficiency of air cleaners 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 filt
24、ers tested in this manner. The actual field operating conditions (including contaminants, humidity, 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 wit
25、h a high degree of confidence. TECHNICAL SPECIFICATION ISO/TS 19713-1:2010(E) ISO 2010 All rights reserved 1Road 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) 1 Scope Thi
26、s part of ISO/TS 19713 describes laboratory test methods to measure engine air cleaner and filter performance by fractional efficiency tests for particles from 0,3 m to 5 m optical diameter. Performance includes, but is not limited to, airflow restriction or pressure loss, initial and incremental fr
27、actional efficiencies during dust loading. The purpose of this test code is to establish and specify consistent test procedures, conditions, equipment and performance reports in order to enable comparison of filter performances of air cleaners and air filter elements used in engine air induction sys
28、tems. It specifies the critical characteristics of equipment, test procedure and report format required for the consistent assessment of filter elements in a laboratory test stand. ISO/TS 19713-2 describes fractional efficiency tests with particles from 5 m to 40 m optical diameter. 2 Normative refe
29、rences 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 5011:2000, Inlet air cleaning equipment
30、 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 following terms and definitions apply. 3.1 air cleaner assembly assembly which incl
31、udes 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 ISO/TS 19713-1:2010(E) 2 ISO 2010 All rights reserved3.1.2 multistage air cleaner air cleaner consisting of two or more stages, the first usually being
32、 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. 3.1.3 pre-cleaner device usually using inertial or centrifugal means to remove a portion of the test dust before reaching the
33、 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 airflow rate is expressed in cubic metres per second. 3.4 pressure loss permanent pre
34、ssure 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 of a specified size expressed as a percentage for particle size i 1, 2, f, 1, 100 i
35、i 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 expressed in percent. 3.6 fractional efficiency before dust loading efficiency befor
36、e 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 measurable effect on the filter pressure loss. 3.7 incremental fractional efficiency e
37、fficiency, 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 12103-1 test dust ISO/TS 19713-1:2010(E) ISO 2010 All rights reserved 3NOTE 1 The valu
38、es 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; L iis the fraction of filter life; P dis the specified terminal pressure loss. NOTE 2 If necessary, the requester and
39、 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 of particles of specified size entering the filter expressed in a percentage for part
40、icle 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 expressed in grams 3.10 particle measurement device aerosol spectrometer instrument for
41、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. aerodynamic particle counters (APC). 3.11 test aerosol particles suspended in air,
42、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 coincidence-related errors in the particle counters, and does not change the filter efficienc
43、y 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 5.2.10 and 5.2.11. 3.11.2 loading test aerosol aerosol used to load the filter, the concentration of which is hig
44、h enough to allow loading of the filter in a reasonable amount of time NOTE The requirements for the loading test aerosol are given in 5.2.13.2. ISO/TS 19713-1:2010(E) 4 ISO 2010 All rights reserved3.12 correlation ratio R ratio of the number of particles observed at the downstream sampling location
45、 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. 3.13 log mean diameter D l,iweighted mean diameter calculated by
46、() 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 same volume as the particle being measured NOTE For a spherical particle, it is the di
47、ameter 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 NOTE Optical diameter depends on the instrument, the type of particle used to calibrat
48、e 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 g/cm 3with the same terminal velocity as the particle being measured, due to gravita
49、tional 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 information 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 define
