This is the vapor pressure of gasoline under a closed vessel at 100 degrees Fahrenheit. Summer months require a lower RVP so that gasoline does not evaporate before it can combust in a gasoline engine. Winter months require a higher RVP so that gasoline does not vapor lock before it can combust in a gasoline engine.
A specific test measuring the presser of light molecules that evaporates from gasoline under carefully defined conditions. Gasolines are blended to have Reid Vapor Pressure (RVP) in the range 7 to 10 pounds per square inch, with variations with season and elevation to allow easy starting without excess air pollution.
a common measure of gasoline volatility. Volatility is the property of a liquid fuel that defines its evaporation characteristics. EPA regulates the vapor pressure of all gasoline during the summer months (June 1 to September 15) in order to reduce evaporative emissions that contribute to smog.
A measure of product volatility, measured in pounds per square inch (psi). The higher the RVP, the more volatile a gasoline is and the more readily it evaporates.
An important test for gasolines. It is a measure of the vapor pressure of a sample at 100°F, and the test is commonly made in a bomb. The results are reported in pounds (ASTM Method D 323).
The pressure exerted by the vapors released from an oil at a given temperature when enclosed in an airtight container.
A standard measurement of a liquid's vapor pressure in psi at 100 degrees Fahrenheit. It is an indication of the propensity of the liquid to evaporate.
A measure of the volatility of petroleum products that is done by testing vapor pressure at 100 degrees Fahrenheit in pounds/square inch.