An antiknock agent is a gasoline additive used to reduce engine knocking and increase the fuel`s octane rating by raising the temperature and pressure at which ignition occurs. The mixture known as gasoline, when used in high compression internal combustion engines, has a tendency to ignite early before the correctly timed spark occurs (pre-ignit....
Found on
http://en.wikipedia.org/wiki/Antiknock_agent
(from the article `gasoline engine`) ...As the gasoline engine developed, gasoline and the engine were harmonized to attain the best possible matching of characteristics. The most ... ...trucks and buses and a few automobiles, and compressed liquefied hydrogen is being used experimentally. The most important requirements of a fuel ... ...
Found on
http://www.britannica.com/eb/a-z/a/83
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