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The octane rating of aviation gasoline was extremely important in determining aero engine performance in the aircraft of World War II. [3] The octane rating affected not only the performance of the gasoline, but also its versatility; the higher octane fuel allowed a wider range of lean to rich operating conditions. [3]
Attention should be given to the combustion profile, peak pressures and exhaust temperatures on the Engine. As the name suggests, CCAI is a calculation based on the density and viscosity of a given fuel. The formula is rather complex but in general, the higher the CCAI, the poorer the ignition quality of the fuel is considered to be.
Octane rating is measured relative to a mixture of 2,2,4-trimethylpentane (an isomer of octane) and n-heptane. There are different conventions for expressing octane ratings, so the same physical fuel may have several different octane ratings based on the measure used. One of the best known is the research octane number (RON). The octane rating ...
Retrieved from "https://en.wikipedia.org/w/index.php?title=Motor_Octane_Number&oldid=606468195"
Eastern Nevada primarily uses 85/87/91 octane ratings. New Hampshire: 87 89 93 New Jersey: 87 89 93 New Jersey checks for fraudulent labeling of octane ratings. [8] New Mexico: 86 88 91 New York: 87 [9] 89 91/93 93 is widely available. North Carolina: 87 89 93 91 octane is commonly sold as "premium" in the western, mountainous part of the state ...
Another engine, supposedly based upon the Cosworth BDA and YB series engines, weighed 168 pounds (76 kg), half the weight of its metal counterpart. [4] Plastic parts included the engine block, cam cover, air intake trumpets, intake valve stems, piston skirts and wrist pins, connecting rods, oil scraper piston rings, tappets, valve spring ...