1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.QUESTIONS REGARDING THIS DOCUMENT: (724) 772-8512 FAX: (724) 776-0243TO PLACE A DOCUMENT
3、 ORDER; (724) 776-4970 FAX: (724) 776-0790SAE WEB ADDRESS http:/www.sae.orgCopyright 1993 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.SURFACEVEHICLE400 Commonwealth Drive, Warrendale, PA 15096-0001RECOMMENDEDPRACTICEAn American National StandardJ1533ISSUEDJUN93Issued 1
4、993-06OPERATOR ENCLOSURE AIR FILTER ELEMENT TEST PROCEDUREThis document is technically equivalent to ISO DIS 10263.ForewordThis Document has not changed other than to put it into the new SAE Technical Standards BoardFormat.It is difficult, if not impossible, to select a generic calculation that woul
5、d enable one to determine the exact size offilter for all applications. Determining factors that must be taken into consideration are:a. The amount of fresh air required to maintain operator enclosure pressurization.b. The quantity of conditioned air that will be recirculated and provisions to contr
6、ol the amount ofrecirculation.c. The air handling units (blowers) ability to produce an adequate amount of flow to overcome theresistance of the ductwork and filtration system.1. ScopeThis SAE Recommended Practice establishes a uniform test procedure for determining performancelevels of operator enc
7、losure panel type air filters on off-road, self-propelled work machines used inconstruction, general-purpose industrial, agriculture, and forestry as defined in SAE J1116 and equipped withan operator enclosure with a powered fresh air system.2. References2.1 Applicable PublicationsThe following publ
8、ications form a part of this specification to the extent specifiedherein. The latest issue of SAE publications shall apply.2.1.1 SAE PUBLICATIONSAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.SAE J726 JUN93Air Cleaner Test CodeSAE J1116 JUN86Categories of Off-Road Self-Propell
9、ed Work MachinesSAE J1533 Issued JUN93-2-3. Definitions3.1 Operator Enclosure Air Filter ElementA medium in which particulate is removed from the incoming airsupply.3.2 EfficiencyThe ability of the air filter element to remove particulate. This will be expressed by Equation 1:(Eq. 1)4. Air Filter El
10、ement Performance TestThe test shroud configurations for the operator enclosure filtercomparison tests are outlined in 4.1.1 and Figure 1. This test procedure also designates a recommendedintake velocity for the dust mixing chamber Figure 1.4.1 Test Equipment and Instrumentation4.1.1 Air flow restri
11、ction and pressure drop test is to be conducted using a minimum of three points, 80%, 100%,and 120% of rated air flow (use element restriction test setup shown in Figure 2). Condition the unit to betested at least 30 min under temperature and humidity conditions equivalent to those in the test area.
12、To determine the resistance to air flow, particulate holding capacity, particulate removal efficiency, andsealing characteristics, use the equipment described in Figure 2. For element configurations other thanpanel type, reference SAE J726.4.1.2 Use a dust metering device (Figure 3) which when used
13、with the dust injector (Figure 4) is capable ofmetering dust over the range of delivery rates required. This dust feed system shall not change the primaryparticle size distribution of the particulate. The average delivery rate shall be within 5% of the desired rateand the deviation in the instantane
14、ous delivery rate from the average shall be no more than 5%.4.2 Test Conditions and Material4.2.1 STANDARD CONDITIONAll air flow measurements are to be corrected to a standard condition of 25 C at100kPa.4.2.2 TEST DUST1Shall be standardized and shall be of two grades labeled fine and coarse. For typ
15、ical particlesize distributions and chemical composition, refer to Table 1, Table 2, and Table 3:1. Obtainable from Powder Technology, Inc., Burnsville, Minnesota.TABLE 1CHEMICAL ANALYSIS OF TEST DUSTChemical % of WeightSiO2 6769Fe2O3 35Al2O3 1517CaO 24MgO 0.51.5Total Alkalis 35Ignition Loss 23Effic
16、iency%Increase in weight offilter element under testIncrease in weightof filter elementunder testIncrease in weightof the absolutefilter+-100=,SAE J1533 Issued JUN93-3-FIGURE 1TEST SHROUDSAE J1533 Issued JUN93-4-FIGURE 2EFFICIENCY/CAPACITY AIR FILTER ELEMENT TEST SETUPSAE J1533 Issued JUN93-5-FIGURE
17、 3DUST FEEDER (DETAIL DRAWING AVAILABLE FROMSAE J726 TEST CODE SUBCOMMITTEE)SAE J1533 Issued JUN93-6-FIGURE 4DUST INJECTORTABLE 2PARTICLE SIZE DISTRIBUTION BY VOLUME, %Size, m Coarse Grade(% less than)Fine Grade(% less than)5.5 13 3 38 311 24 3 54 322 37 3 71 344 56 3 89 388 84 3 97 3125 100 100SAE
18、J1533 Issued JUN93-7-4.2.3 ABSOLUTE FILTER MATERIALS2The absolute filter shall consist of fiberglass media with a minimum thickness of 12.7 mm and a minimumdensity of 9.5 kg/m3. The fiber diameter shall be 0.76 to 1.27 m and the moisture absorption shall be lessthan 1% by weight after exposure of 50
19、 C and 95% relative humidity for 96 h. The filter shall be installedwith the nap side facing upstream in an air-tight holder that adequately supports the media. The face velocityshall not exceed 50 m/min to maintain media integrity.4.2.4 ABSOLUTE FILTER WEIGHTThe absolute filter shall be weighed to
20、the nearest 0.01 g after the weight hasstabilized and while in a ventilation oven at 105 C 5 C.NOTEIf stabilization cannot be determined, a minimum time of 4 h is required.4.2.5 TEMPERATURE AND HUMIDITYAll tests shall be conducted with air entering the air filter at a temperature of24 C 8 C and a re
21、lative humidity of 50% 15%.NOTESince atmospheric conditions affect test results, when comparing performance of filters designed forthe same application, tests should be conducted within the narrowest range of temperature andhumidity possible.4.2.6 AIR VELOCITYThe velocity of the air entering the top
22、 of the dust mixing chamber shall be a minimum of6 m/s (Figure 1).5. Test Dust and ConcentrationIt is difficult, if not impossible, to select a test dust size distribution andconcentration which will be representative of all service conditions; therefore, based primarily on practicalconsiderations,
23、the concentration shall be 1 g/m3 for coarse and fine dusts (1 g/m3 is generally accepted aszero visibility conditions).6. Test Data Reporting6.1 Performance RequirementsPerformance requirements should be agreed upon between supplier andpurchaser (see qualification test form, Figure 5).6.2 ExampleSe
24、e Figure 5.TABLE 3PARTICLE SIZE DISTRIBUTION BY WEIGHT, %Size, m Coarse Grade Fine Grade05 12 2 39 2510 12 3 18 31020 14 3 16 32040 23 3 18 34080 30 3 9 380200 9 3 2. Absolute Filter Material Johns Manville AFS 4 (or equivalent).SAE J1533 Issued JUN93-8-FIGURE 5SAE J1533 QUALIFICATION TEST7. Backgro
25、und and Optimum Performance GuidelinesOperator enclosure filters for off-road self-propelledmachinery are utilized to prevent dust and other airborne particulates from entering the operator enclosure(cab).The filter is usually placed upstream of the air circulation fan, air conditioner evaporator, a
26、nd heater core toprotect them as well as the operator from airborne particulates.Performance characteristics of the fresh air supply system have an enormous effect on the general comfortlevel of the operator. The optimum design will filter incoming air without sacrificing operator comfort.The most c
27、ommon configuration for operator enclosure filters is the flat panel type. These filters are made in awide variety of lengths, widths, and thicknesses.PREPARED BY THE SAE HUMAN FACTORS TECHNICAL COMMITTEE SC6OPERATOR ACCOMMODATIONSAE J1533 Issued JUN93RationaleThe following operator enclosure air fi
28、lter guideline has been established to cover dry type cab airfilters used on off-road, self-propelled work machines.The objective of this procedure is to provide a uniform means for evaluating the performancecharacteristics of enclosure air filters on bench test equipment. The data collected by this
29、 test procedurecan be used to establish standards of performance for enclosure air filters. Variations in actual fieldoperating conditions are difficult to duplicate; however, with the procedure and equipment set forth,comparisons of air filter effectiveness can be made.In the past, there have been
30、numerous configurations of test housings. All of these designs have hadone objective, to provide uniform dust loading throughout the entire area of the filter.The performance characteristics of greatest interest are air flow restriction or pressure drop, particulatecollection efficiency, and particu
31、late capacity. These test recommendations are defined under aircleaner test code SAE J726; however, the test shroud configurations defined in SAE J726 are notapplicable for operator enclosure filter comparison.Relationship of SAE Standard to ISO StandardThis document is technically equivalent to ISO
32、 DIS 10263.ApplicationThis SAE Recommended Practice establishes a uniform test procedure for determiningperformance levels of operator enclosure panel type air filters on off-road, self-propelled work machinesused in construction, general-purpose industrial, agriculture, and forestry as defined in S
33、AE J1116 andequipped with an operator enclosure with a powered fresh air system.Reference SectionSAE J726 JUN93Air Cleaner Test CodeSAE J1116 JUN86Categories of Off-Road Self-Propelled Work MachinesDeveloped by the SAE Human Factors Technical Committee SC6Operator AccommodationSponsored by the SAE Human Factors Technical Committee
