from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A colorless liquid, C16H34, used as a solvent and in standardized hydrocarbons.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The aliphatic hydrocarbon C16H34 (hexadecane) used as a standard for diesel fuel
from The Century Dictionary and Cyclopedia
- n. Same as hexadecane. C16-H34.
The desirable qualities required for distillate fuels include controlled flash and pour points, clean burning, no deposit formation in storage tanks, and a proper diesel fuel cetane rating for good starting and combustion.
Vehicles in Mexico can use a heavier, higher cetane fuel because there is far less risk of the sorts of temperatures which will gel fuel than in, say, Wyoming.
Mexican diesel is heavier, almost D3 - much more paraffin and sulphur, slightly higher BTU and cetane, but smokier and dirtier.
The diesel fuel which is sold in the U.S. runs about 40 cetane where I'm from (the Northeast) and in Mexico it is 50 cetane uniformly.
The cetane rating of the fuel is as much as 10 points higher than U.S. diesel.
The minimum cetane rating that Caterpillar engines are designed to operate at is 35.
Generally, the heavier the fuel the lower the cetane number.
The higher the cetane number, the easier the fuel will self ignite in the combustion chamber of the Diesel engine.
It has a low cetane number, so it works well when introduced into the cylinder with the air, compressed, and mixed with a little diesel fuel in order to cause an explosion
That is why cetane numbers are all about how easily the fuel ignites on its own in the cylinder.
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