Articles Posted in the " COMPARISON OF SI ENGINES AND CI ENGINES " Category

  • Highlights of combustion in internal combustion engines

    Highlights of combustion in internal combustion engines

    Highlights of combustion in internal combustion engines Combustion is rapid burning of the air fuel mixture (carbon + Oxygen and hydrogen + oxygen) to liberate heat energy. Process of combustion takes place differently in spark ignition engines and diesel engines.  In spark ignition engines (Petrol engines or gasoline engines), combustion takes place by igniting the […]


  • COMBUSTION PROCESS OF SI AND CI ENGINES

    COMBUSTION PROCESS OF SI AND CI ENGINES

     COMBUSTION PROCESS OF SI AND CI ENGINES Combustion is a process of burning hydrogen and carbon in the fuel with oxygen. There are major differences in the combustion process in SI and CI engines. These have been tabulated below:  COMPARISON Sr. No. SI Engine CI Engine   1. There is a carburetor and a spark […]


  • Power Producing Internal Combustion Engines

    Power Producing Internal Combustion Engines

    Power Producing Internal Combustion Engines It is an engine in which fuel burns with air in the combustion chamber. High pressure and high temperature gases are produced which move a piston in the internal combustion engine. Thus chemical energy is first converted into heat energy, then into pressure energy and then  mechanical energy and hence power […]


  • Spark and Compression Ignition Engines

    Spark and Compression Ignition Engines

     Spark  and Compression Ignition Engines COMPARISON OF SPARK IGNITION AND COMPRESSION IGNITION ENGINES Item/Description SI ENGINE CI ENGINE Thermodynamic cycle used Otto Cycle Diesel Cycle Heat addition At constant volume At constant pressure Fuel used Petrol/Gasoline Diesel Ignition temperature Self Ignition temperature is high and needs a spark plug Self ignition temperature is lower and […]