Role of Octane Rating in Fuel Efficiency of auto Engine

  • S Naushab Sarwar
  • S. Nayyar Raza Naqvr
  • MA Quddus


The annual consumption of oil and gas in the country is increasing at high growth rate of 6 to 8% per year. The present consumption of liquid fuels is more than 10 million tonnes a year. Significant amount of oil can be saved through energy conservation programme. Some fuels can perform thermodynamically more efficiently after requisite changes in their specifications are made. The paper reviews variation of Research Octane Number (RON) of motor fuels and its impact on fuel consumption.