TECHNICAL TERMS OF FUEL AND COMBUSTION !!

1.)ADDITIVE – A substance added to fuel, or oil or grease which improves
the properties of the same.

2.)AFTER BOIL – Boiling of the fuel in the carburettor or coolant in the engine immediately after the engine is stopped.

3.)AFTER BURNING – In an internal combustion engine, the persistence of the combustion process beyond the period proper to the working cycle,i.e., into the expansion period.

4.)ANILINE POINT – The lowest temperature at which an oil is completely miscible with an equal volume of aniline.

5.)ATOMIZATION – The spraying of a liquid through a nozzle so that the liquid is broken into a very fine mist

6.)BACKFIRE (exhaust system) – Passage of unburned air fuel mixture into the exhaust system where it is ignited by some hot spot and causes a
loud explosion.

7.)CATALYTIC CONVERTER – A muffler like device for use in an exhaust system that converts harmful gases in the exhaust into harmless gases by promoting a chemical reaction between a catalyst and the pollutants.

8.)DETONATION – An uncontrolled instantaneous second explosion in a spark ignition engine, after the spark occurs, with excessively rapid burning of a portion of the compressed air fuel mixture (end charge almost exploding) resulting in a spark knock, or pinging noise.

9.)FLASH POINT– It is the temperature at which the quantities of vapour which a combustible fuel emits into the atmosphere are sufficient to allow a spark to ignite the vapour air mixture above the fluid.

10.)PING – The sound resulting from sudden auto ignition of the airfuel charge in a SI engine combustion chamber. Characteristic sound of detonation.