Cetane
Number (CN)
The
cetane number (CN) is the diesel fuel equivalent to a gasoline octane rating, this number expresses the fuel's
ignition quality and its suitability for spontaneous self-ignition
in an engine. The fuel must ignite spontaneously and quickly
after being injected into the hot, compressed air inside the
combustion chamber. A higher cetane number means a shorter
ignition delay and a smaller amount of fuel in the combustion
chamber when the fuel ignites.
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