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Pelican Technical Article:

More Than You Ever Wanted to
Know About Gasoline

from usenet

Difficulty Level: 1
Difficulty scale: Adding air to your tires is level one
Rebuilding a BMW Motor is level ten

     This article is the one in a series that will be released in conjunction with Wayne's upcoming book, 101 Projects for Your BMW 3-Series.  The book will be 256 pages of full color projects detailing everything from performance mods to timing the camshafts.   With more than 350+ full-color glossy photos accompanying extensive step-by-step procedures, this book should be a staple in any 3-Series owner's collection.  See The Official Book Website for more details.  The book is due out in October 2005.   
    1. Introduction, Intent, Acknowledgements, and Abbreviations

1.1  Introduction and Intent.

The intent of this FAQ is to provide some basic information on gasolines and
other fuels for spark ignition engines used in automobiles. The toxicity and
environmental reasons for recent and planned future changes to gasoline are
discussed, along with recent and proposed changes in composition of gasoline.
This FAQ is intended to help readers choose the most appropriate fuel for
vehicles, assist with the diagnosis of fuel-related problems, and to
understand the significance of most gasoline properties listed in fuel
specifications. I make no apologies for the fairly heavy emphasis on
chemistry; it is the  only sensible way to describe the oxidation of
hydrocarbon fuels to produce energy, water, and carbon dioxide.

1.2  Acknowledgements.

Thanks go to all the posters in and who spend
valuable time responding to questions. I would also like to acknowledge
the considerable effort of L.M.Gibbs of Chevron, who has twice spent his
valuable time courteously detailing errors and providing references
for his corrections. All remaining errors and omissions are mine.

1.3  Abbreviations.

AKI = Antiknock Index of Gasoline ( (RON+MON)/2 )
CI = Compression Ignition ( Diesel )
Gasoline = Petrol ( Yes, complaints were received :-) )
IC = Internal Combustion
MON = Motor Octane Rating
Octane = The Octane Rating of the Gasoline
RFG = Reformulated Gasoline ( as defined by US Clean Air Act )
RON = Research Octane Rating

SI = Spark Ignition ( Gasoline )

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