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Octane  & Cetane  Numbers How they are related to fuel available commertially. Presented by –  Ajit Thorat
Octane and Cetane number of fuel Fuel Research Octane Number (ROM) Motor Octane Number (MON) Cetane number Boiling point (ºC) Gasoline 92-98 80-90 0-5 37-205 Diesel -25 - 45-55 140-360 Methanol 106 92 5 65 Ethanol 107 89 5 79 Propane (LPG) 112 97 -2 -42.15 Methane (CNG) 120 120 0 -161.6
OCTANE NUMBER AND CETANE NUMBER  Cetane number (diesel fuel) and octane number (gasoline) both measure the tendency of the fuel to ignite spontaneously. The cetane number refers to the eace with which desel fuel ignites easily at a relatively low temperature.
ROAD OCTANE NUMBER ,[object Object],[object Object]
RON & MON ,[object Object],[object Object]
CETANE NUMBERS ,[object Object],[object Object],[object Object],[object Object]
[object Object],Gasoline Diesel Fuel ,[object Object]
Gasoline Octane Rating ,[object Object],[object Object],[object Object]
Gasoline Octane Rating
Cetane Rating ,[object Object],[object Object],[object Object]
Cetane Rating
Fuel Ignition Quality The ignition characteristics of the fuel affect the ignition delay. The ignition quality of a fuel is defined by its  cetane number. 1) For low cetane fuels 2)For high cetane fuels

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octane and cetane numbers

  • 1. Octane & Cetane Numbers How they are related to fuel available commertially. Presented by – Ajit Thorat
  • 2. Octane and Cetane number of fuel Fuel Research Octane Number (ROM) Motor Octane Number (MON) Cetane number Boiling point (ºC) Gasoline 92-98 80-90 0-5 37-205 Diesel -25 - 45-55 140-360 Methanol 106 92 5 65 Ethanol 107 89 5 79 Propane (LPG) 112 97 -2 -42.15 Methane (CNG) 120 120 0 -161.6
  • 3. OCTANE NUMBER AND CETANE NUMBER Cetane number (diesel fuel) and octane number (gasoline) both measure the tendency of the fuel to ignite spontaneously. The cetane number refers to the eace with which desel fuel ignites easily at a relatively low temperature.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 10.
  • 12. Fuel Ignition Quality The ignition characteristics of the fuel affect the ignition delay. The ignition quality of a fuel is defined by its cetane number. 1) For low cetane fuels 2)For high cetane fuels