Basic introduction of engine

Definition of Engine
A machine that converts any of various form of energy into mechanical force and motion. 

A mechanism which can serve as an energy source. Read more 

Definition of Heat Engine :

In thermodynamics and engineering a device for producing motive power from heat. Read more

Engine Nomenclature :

Cylinder Bore (d): The working cylinder's nominal inner diameter is called the cylinder bore.
It usually expressed in millimetre (mm). Read more

Types of Engines :
Engines vary in design, but certain elements are common to all engines and are used for engine classification which is following below.  
  • The number of cylinders 
  • The geometry of the block
  • Type of ignition system used Read more 
What is Torque?
The net force acting on a body accelerates it and takes something to give the body an angular acceleration. It needs a force, but it needs to be applied in a way that creates a twisting or turning action. Read more


    Lubrication system


    To supply lubricating oil between the moving parts is simply termed as lubrication. 
    The function of lubricants is to reduce friction and heat. Read more 

    It also acts as a coolant.
    It reduces waste of energy so that the efficiency of a machine is enhanced.
    It reduces the expansion of metal by local frictional heat. Read more 


    Anti-oxidant
    Anti-corrosive agents
    Pour point depressors
    Viscosity index improvers Read more 

    Fuel air cycles


    Comparison of Otto Diesel and Dual cycles :

    You should know the main factors which are used as the basis for comparison of the cycles.
    Compression ratio, Peak pressure, Heat addition, Heat rejection, Network. Read more

    The magnitude of difference between the two cycles can be attributed to the following factors :
    The character of the cycle ( Due to assumptions ) 
    Equivalence ratio ( Actual F/A / Stoichiometric F/A )
    Chemical composition of the fuel Read more 


    The actual cycle for IC engines differs from the fuel-air cycles and air-standard cycles in many respects. The actual cycle efficiency is much lower than the air-standard efficiency due to various losses occurring in the actual engine operation. Read more 

    The change in the chemical composition of the working substance.
    The variation of specific heats with temperature. Read more