different types of petrol available in petrol pump
what is the composition of each product?
Answers
Petrol, or Gasoline, in technical terms is called Motor Spirit (MS), or Automotive Gasoline.Petrol is normally produced by refineries by the fractional distillation of crude oil, with further treatment including addition of multifunction additives to enhance its Octane rating (number) and other properties. Technically, it is a complex mixture of hydrocarbons that are balanced to deliver a satisfactory engine performance over a wide range of operating conditions.
A key parameter for Petrol is the octane number, which is a measure of its resistance to knock. In a spark-ignition engine, the air-fuel mixture gets heated during the compression cycle and is thereafter triggered by the spark plug to burn rapidly, as per the engine design requirements. Higher compression ratios enable the engine to extract more mechanical energy from a given mass of air-fuel mixture, leading to higher thermal efficiency.