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§ 86.143-96 Calculations; evaporative emissions.
(a) The following equations are used to calculate the evaporative emissions from gasoline- and methanol-fueled vehicles, and for gaseous-fueled vehicles.
(b) Use the measurements of initial and final concentrations to determine the mass of hydrocarbons and methanol emitted. For testing with pure gasoline, methanol emissions are assumed to be zero.
(1) For enclosure testing of diurnal, hot soak, and running loss emissions:
(i) Methanol emissions:
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