Flash point, Fire point, Auto ignition

FLASH POINT : The min temp at which the rate of vaporization of fuel is sufficient to produce a momentary flash upon the application of source of ignition.

 

FIRE POINT : The min temp at which the burning vapor is capable to enable combustion continue.

 

AUTO IGNITION TEMP : The min temp at which fuel will ignite without help of ignition source. it also called “auto ignition temp”.