Gasoline
- Company Name:Incolex Petroleum LLC
- Membership:Free Member
- Member Since:2018. 09.18
- Country/Region:Russia
- City:Moscow
- Contact:Alexey Rostov
- Related Keywords:GASOLINE
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Incolex Petroleum LLC
[Russia]
Gasoline is made up of a lot of different chemicals, with many different boiling points, vapor pressures, and ignition temperatures. High vapor pressures are good for evaporating the gasoline droplets quickly and mixing it thoroughly with the air, but high vapor pressures also generally mean lower combustion temperatures which cause knocking, and also get government pollution dweebs all excited about air pollution caused by gasoline evaporating out of your gas tank.
Octane rating means comparing the gasoline to a mixture of heptane and iso-octane. If the anti-knock properties of the gasoline are exactly equal to the heptane, the octane rating is 0. If the anti-knock properties are exactly equal to pure iso-octane, the octane number is 100. If the anti-knock properties of the gasoline match a mixture of 13% heptane and 87% iso-octane, then the octane number is 87. This rating system was invented in 1927 by Graham Edgar. The limitations of this test have resulted in several other proposed octane rating systems. We won't be concerned with these details, because even if we completely understood all the issues, we're still limited to buying whatever the gas companies want to sell us. Today there are two tests, the "research octane number" which comes from basic chemistry, and the "motor octane number" which comes from running the fuel in a specific test motor. The octane rating of the fuel you buy is the average, hence the pump label (RON + MON) / 2.
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