SAE J1045:2002 pdf download

SAE J1045:2002 pdf download Instrumentation and Techniques for Vehicle Refueling Emissions Measurement
4.2 Nonstandard Fuel—A nonstandard test fuel may be used if the purpose of the test is to examine the effect of the fuel properties on refueling emissions. If a nonstandard test fuel is used, the RVP shall be stated along with the test results. If methanol or ethanol blends are used, the analytical techniques should be reviewed (the sensitivity of a flame ionization type detector to methanol and ethanol is significantly reduced).
4.3 Fuel Sampling—A sample of test fuel for laboratory inspection should be taken from the source at the start of the test. A 1 .0 L (1 qt) container, prechilled to 4 °C (40 °F) should be used. It should be bottom filled to overflow and then poured out to 80% capacity. The container should be tightly sealed immediately after filling and stored at 4 °C (40 °F) or less until fuel inspection tests are made. Alternative sampling procedures may be substituted, but care must be exercised with any sampling procedure to prevent the loss of volatile constituents from the fuel during either sampling or storage.
5. Test Facilities and Equipment—Provisions must be made for controlling the ambient conditions in the enclosure, draining the fuel tank, heating the residual fuel, and performing the refueling operation.
5.1 Ambient—The ambient temperature within the enclosure must be maintained within the range of 27 °C ± 1 .7 °C (80 °F ± 3.0 °F).
5.2 Fuel Tank Preparation—Facilities and safeguards must be provided for draining vehicle fuel tanks. The work area must be well ventilated. Drain connectors and containers must be grounded to the vehicle tank. Drain the tank through installed fuel tank drains or other suitable method. The intent is to remove all usable fuel and leave the unusable fuel, thus providing a standard repeatable empty-tank condition. For standard conditions, an amount of fuel equal to 1 0% of the tank capacity should then be placed in the tank. Affix fuel cap to filler pipe and tighten prior to placing the vehicle in the enclosure.
5.3 Fuel System Preparation—The entire fuel system should be inspected visually for liquid leakage or seepage. A pressure test of fuel tank assembly, filler pipe, fuel lines, vapor lines, and other components (1 4.4 psig ± 0.5psig for 20 min) should be made to insure the integrity of the fuel system.
5.4 Evaporative Canister Preparation—Vehicle canisters should be loaded and purged according to CFR 40, Part 86, 88, and 600 dated 01 /94 prior to the refueling test.
5.5 Thermocouples—Thermocouples should be of Iron Constantan (type J) and should be provided for: