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SAE WEB ADDRESS
Wherever possible or unless stated otherwi, systems tested to this document shall be in the final design intent configuration.
2.References
2.1Applicable Publications—The following publications form a part of the specification to the extent specified
herein. Unless otherwi indicated the latest revision of SAE publications shall apply.
月亮婆婆喜欢我2.1.1SAE P UBLICATIONS—Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001
SAE J30—Fuel and Oil Hos, Sections 10 and 11
SAE J517—Hydraulic Ho
SAE J526—Welded Low Carbon Steel Tubing
SAE J1645—Fuel System Electrostatic Charge
SAE J1681—Gasoline/Oxygenate Mixtures for Materials Testing
SAE J1737—Procedure/Fuel Permeation Loss
SAE J2027—Protective Covers for Non-metallic Gasoline Fuel Injection Tubing
SAE J2044—Fluid Coupling for Gasoline Fuel Injection Fuel Supply & Vapor Systems
SAE J2260—Non-metallic Fuel System Tubing with 1 or more layers
2.2Other Publications女人60岁生日祝福语
一个车夫Code of Federal Regulations Title 40 part 86
3.Routing Recommendations— Fuel tube/ho asmblies shall be routed and supported as to;
a.Prevent chafing, abrasion, kinking, or other mechanical damage.
b.Be protected against road hazards or provided with adequate shielding in locations that are vulnerable
to physical and/or chemical hazards.
c.Be protected where temperatures may exceed the limits of –40 °C to +90 °C by the addition of
adequate insulation and/or shielding.
d.To assure maintenance of design intent routings of liquid fuel and/or fuel vapor asmblies, appropri-
ate retaining/mounting devices must be incorporated for proper asmbly and subquent vehicle r-
vice operation, maintaining interfaces for temperature and environmental control for durability.
e.Route tube asmblies in an environment which minimizes heat input to the asmblies and the liquid
fuel and/or fuel vapor which they contain.
4.Technical Requirements
枯树枝4.1Leak Resistance
4.1.1T ESTING D EVICE—A device capable of applying the recommended internal pressure specified for both liquid
fuel and fuel vapor line asmblies. Test is intended to be performed on liquid fuel/fuel vapor asmblies that duplicate the design intended for vehicle application, including applicable end fittings and/or connections. 4.1.2S AMPLE P REPARATION—All tests are to be conducted at room temperature.
4.1.3P ROCEDURE
a.Attach tube asmblies to test fixture which simulates vehicle installation where at all possible.
b.Apply internal pressure (e Appendix A) at one end of the asmbly, allowing sufficient time for
system to stabilize before determining leak rate.
c.At test completion, test media should be exhausted through opposite end of asmbly to which it was
pressurized to insure obstruction and/or blockage was not prent in the liquid fuel/fuel vapor line
asmbly, as well as blowout any potential residue which may have been prent.
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d.After test, remove asmbly from test fixtur
e.
4.1.4 A CCEPTANCE C RITERIA—Design target for maximum leakage allowed, are per specified guidelines (e
Appendix A). Final acceptance criteria to be jointly determined by producer and end ur.
4.2Fitting Pull-Off—(room temperature and elevated temperature)
4.2.1T ESTING D EVICE—A device suitable for applying a tensile load at a constant rate of 50 mm/min, elongating
tube or ho asmblies up to 400% of their initial length, and measuring the maximum load achieved up to
a load of 900 N minimum.
西周制度4.2.2S AMPLE P REPARATION—All tests are to be conducted at room temperature (room temperature fitting pull-off)
and at 115 °C for high-temperature fitting pull-off.
4.2.3P ROCEDURE
a.The test specimen shall consist of a direct connection coupling between the flexible tubing/ho and
fitting or tube with enough length of ho and/or tube on either side of specimen to permit adequate
gripping in the test apparatus. Specimens may be cut from the production intent part or made for this
test utilizing production intent product and process, such as component asmbly devices and tube
forming techniques.
b.Grip the test specimen in the tensile-loading device and apply a tensile load at a speed of 50 mm/
min until one of the following events occur;
1.The fitting or tube parates from the flexible tubing
2.One of the test specimen components break, fracture, or rupture
3. A maximum load is reached whereby the flexible tubing reaches its maximum tensile/elongation load
capability
c.For elevated temperature pull-off tests, grip the test specimen in the tensile-loading device and heat
test chamber to 115 °C (239 °F) prior to applying the 50 mm/min tensile load. Test chamber should be
instrumented with a thermocouple to insure test environment reaches 115 °C prior to applying the
tensile load.
d.Measure and record the greatest load achieved before one of the events listed (2) occurs, and the type
of event (failure mode).
4.2.4A CCEPTANCE C RITERIA
a.Room Temperature—450 N minimum (fuel asmblies) or 222 N minimum (vapor asmblies)
b.115 °C Temperature—115 N minimum (fuel asmblies) or 65 N minimum (vapor asmblies)
4.3Flow Restriction
4.3.1T ESTING D EVICE—A spherical ball half the size of the nominal flexible tubing material inner
diameter.
4.3.2S AMPLE P REPARATION—T esting is to be performed at room temperature.
4.3.3P ROCEDURE
a.Bend or preform tubing, utilizing intended production processing method, to the shape and contour
required by its design application. It is not recommended to include connectors or tubing ends for this
test since geometry constraints of the components may interfere with performing this test (i.e., lack
of flow through feature, restrictions, etc.)
b.Pass the spherical ball through the preformed tube.
4.3.4A CCEPTANCE C RITERIA—The spherical ball must pass freely through the preformed tube.
4.4Internal Cleanliness
4.4.1T ESTING D EVICE(S)—Testing devices must be utilized which can safely and accurately flush the interior of the
tubing asmbly with solvent, effectively remove any contaminants and foreign material from the interior surface, and accurately measure that material and its weight. (See Figure 1.)
FIGURE 1—EXAMPLE
4.4.2S AMPLE P REPARATION—T esting is to be performed at room temperature.
4.4.3P ROCEDURE
a.Pre-dry filter device, then cool in a desiccant cabinet.
b.Pre-weigh filter device which will be ud in collecting potential contaminants and foreign material in
fuel line asmbly. Filter must be capable of collecting a contaminant which is 240 micron in size or
larger.
c.Set up test specimen in test device/apparatus.
d.Turn on vacuum pump (if applicable or utilized).
e.Pour an amount of solvent (equivalent to at least the volume of the asmbly) through the tube
asmbly. Solvent which is dispend into the fuel line asmbly should be pre-filtered.
f.Dispen solvent which has pasd through the fuel line asmbly into a pre-weighed filter, followed
by a collection device to contain the solvent. Dry filter to dissipate solvent absorbed by filter.
g.Weigh filter to determine weight gain, which is an indicator of contaminant and/or foreign material
collected from tube asmbly. Record value obtained in grams per tube.
4.4.4A CCEPTANCE C RITERIA—Total contaminant collection should not exceed 0.15 g/s meter (flexible tubing
asmbly) or 0.25 g/s meter (flexible tubing asmbly with steel tubing attached) of interior surface area. 4.5Internal Fuel Resistance
含有近义词的四字词语4.5.1T ESTING D EVICE(S)—Apparatus capable of safely storing fuel filled test specimens at elevated temperature
(up to 60 °C) and controlling the ambient temperature to within ±2 °C.
4.5.2S AMPLE P REPARATION—Prepare samples and conduct testing to temperatures as described in SAE J2260,
7.7 and 7.8.
4.5.3T EST P ROCEDURE—Per SAE J2260, 7.7 and 7.8, except conduct on finished asmblies or samples which
consist of design intent interfaces and components.
4.5.4A CCEPTANCE C RITERIA—Asmblies must meet 4.1, 4.2 (room temperature only), 4.8, and 4.10 (conductive
systems only) of SAE J2045 upon completion of internal fuel resistance exposures. End ur should be consulted for any potential additional requirements beyond SAE J2260 baline fuels.
4.6Life Cycle
4.6.1T ESTING D EVICE—Life cycle test chamber capable of performing the pressure, vibration, and temperature
cycles with test fluid as outlined in SAE J2044, 6.5.
4.6.2S AMPLE P REPARATION—Prepare samples as described in 6.5 of SAE J2044 on finished asmblies or
samples which consist of production intent interfaces and components.
4.6.3T EST P ROCEDURE—Per SAE J2044, 6.5 (both liquid-fuel and/or fuel-vapor applications)
4.6.4A CCEPTANCE C RITERIA—Test asmblies must exhibit no fluid leaks through entire test duration. At comple-
tion of test, visually inspect asmblies and components to insure no fractures, cracks, or unusual wear has occurred. Test asmblies must then meet the air leak test, 4.1 of SAE J2045.
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