Let me try and explain it a different way and you tell me if you are confused or perhaps mis- reading.
RVP is the vapor pressure of the gasoline when the temperature is 100 degrees F. If gasoline has a RVP of 14.7 The same as the air around us it would boil at 100 degrees in a open bucket. If we change the RVP of the gas or increasing elevation and reduce atmospheric pressure we can change the boiling point of the gas. The closer we get a liquid to its boiling point the better it vaporizes. Such as a dish of water. If we sit it on the counter at room temperature it will turn to a vapor and evaporate. But if we heat the water it will evaporate faster. The RVP of the water stayed the same we just messed with the temperture.
In the winter we want RVP high so the gas will vaporize in cooler temperatures because a engine will not run on liquid gas; it has to be vapors. As the air temperature rises in the summer we lower the RVP to try and keep the gas in the tank long enough that we can use it but mostly to prevent pollution from evaporating gasoline. Yes some of it will evaporate but the lower we bring the RVP the less of it will. The pressure in your gas tank is proof of this. Some of the gas is vaporizing in the tank from the heat (closer to the boiling point) and is building pressure in the tank. The same thing happens to a 5 gallon can set in the sun.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
