What Is Rvp In Gasoline

Because the fuel rule was retained as a contingency measure it remains on the boutique fuel list.

What is rvp in gasoline.

Rvp is the vapor pressure of gasoline measured at 100 degrees fahrenheit. Regulators worry about this evaporation because it contributes to ozone formation. Fuels with higher rvp evaporate more easily than those with lower rvp. Rvp is not.

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. Reid vapor pressure rvp is a common measure of the volatility of gasoline and other petroleum products. A particular fuel blend s rvp is based on the combined rvp of the ingredients that make up the blend. The pressure is exerted at a specific temperature that is 100 degrees fahrenheit.

The more volatile a gasoline higher rvp the easier it evaporates. It is determined by a test known as astm d 323. 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. 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.

See 77 fr 23619 april. Reid vapor pressure is measured in gauge pressure and is stated in psi units. Rvp is a measure of how easily the fuel evaporates at a given temperature. Rvp is an abbreviation for reid vapor pressure a common measure of and generic term for gasoline volatility.

Reid vapor pressure is the pressure exerted by a liquid to calculate the volatile nature of gasoline.