What Is Rvp In Gasoline

Regulators worry about this evaporation because it contributes to ozone formation.

What is rvp in gasoline.

Rvp is not. The more volatile a gasoline higher rvp the easier it evaporates. See 77 fr 23619 april. Rvp is a measure of how easily the fuel evaporates at a given temperature.

Alabama rvp of 7 0 psi. Implementation of alabama s 7 0 psi gasoline rvp rule was suspended when epa approved alabama s request to move the rule to the contingency measure portion of the sip for the birmingham area. The pressure is exerted at a specific temperature that is 100 degrees fahrenheit. Winter blend fuel has a higher rvp because the fuel must be able to evaporate at low temperatures for the engine to operate properly especially when the engine is cold.

Federal law prohibits gasoline with a reid vapor pressure rvp greater than 9 0 pounds per square inch to be sold at retail stations from june 1 through september 15. Because the fuel rule was retained as a contingency measure it remains on the boutique fuel list. It is determined by a test known as astm d 323. Reid vapor pressure rvp is a common measure of the volatility of gasoline and other petroleum products.

Epa regulates the vapor pressure of gasoline sold at retail stations during the summer ozone season june 1 to september 15 to reduce evaporative emissions from gasoline that contribute to ground level ozone and diminish the effects. Reid vapor pressure is the pressure exerted by a liquid to calculate the volatile nature of gasoline. Rvp is the vapor pressure of gasoline measured at 100 degrees fahrenheit. A particular fuel blend s rvp is based on the combined rvp of the ingredients that make up the blend.

Rvp is an abbreviation for reid vapor pressure a common measure of and generic term for gasoline volatility.