||Accelerated decay of non-fuel evaporative emissions : task no. 1 /
||Automotive Environmental Systems, inc.
|| Environmental Protection Agency, Office of Air and Water Management, Office of Mobile Source Air Pollution Control, Emission Control Technology Division ; For sale by the National Technical Information Service,
||5285 Port Royal Rd., 22161
Air pollution ;
Gas analysis ;
Mass spectrometry ;
Gas chromatography ;
Baseline measurements ;
||Region 3 Library/Philadelphia, PA
||Region 4 Library/Atlanta,GA
||NVFEL Library/Ann Arbor, MI
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||v, 35, 4 p. : ill. ; 28 cm.
This program was designed to determine whether driving a vehicle on a dynamometer or baking a vehicle in a paint oven could accelerate the normal decay of background hydro-carbon evaporative emissions from new vehicles. Daily background evaporative emission tests were performed on two groups of three identical Ford LTD's in accordance with the procedures outlined in SAE J17la. All fuel system components were either removed or plugged. The carburetors were removed and the intake manifolds covered with a plate. An auxiliary fuel system was used when running each vehicle on the dynamometer. Daily testing was begun on each vehicle within nine days after manufacturing. One vehicle in each group was a control vehicle, which soaked between daily tests. After each daily test, the second vehicle in each group was driven on the dynamometer for five series of two LA-4 driving schedules, with a 30-minute soak with the engine off following each series. It was then soaked until the next test. The third vehicle in each group was placed in a bake oven at 125 F for 12 hours after each test and then soaked until the next test.
Prepared contract 68-03-2413. Issued Aug. 1976.