ENGINE AND ITS CLASSIFICATIONS

 

VIDEO LECTURE ON ENGINE AND ITS CLASSIFICATIONS

ENGINE

What is engine ?

• It is a power generating machine which converts power into motion.
• Otherwise we can define as, engine is a device which converts heat energy of the fuel into mechanical energy.

Example : Petrol engine, Diesel engine

INTERNAL COMBUSTION ENGINE

What is heat engine?

Heat engine is a device which converts heat energy into work.

Example: IC engine, EC engine

EXTERNAL COMBUSTION ENGINE

 

What is IC engine ?

• IC engine also called as internal combustion engine.
• The combustion of fuel takes place inside of the cylinder.
• During combustion process, chemical energy of the fuel is converted into heat energy. Further it is converted into useful work.

Example : Petrol engine, Diesel engine, Gas turbine.

 

TURBINE

What is EC engine ?

• EC engine also called as external combustion engine.
• The combustion of fuel takes place externally.
• In external combustion engine heat energy is converted into mechanical work.

Example : Steam turbines used in thermal power plant. Gas turbine power plant.

CLASSIFICATIONS OF ENGINE

Based on construction

• Rotary engine Ex: Wankel engine
• Reciprocating engine Ex: Petrol engine
  

 

ROTARY ENGINE

RECIPROCATING ENGINE

Based on thermodynamic cycle

• Otto cycle Ex: Petrol engine
• Diesel cycle Ex: Diesel engine

Based on fuel

• Petrol Ex: Petrol engine
• Diesel Ex: Diesel engine

Based on cooling system

• Air cooled engine Ex: Two wheeler
• Water cooled engine Ex: Four Wheeler

Based on strokes

• Two stroke engine Ex: RX 100 bike
• Four stroke engine Ex: Hero passion 
  

 

TWO STROKE ENGINE

FOUR STROKE ENGINE

Based on ignition system

• Spark ignition system Ex: Petrol engine
• Compression ignition system Ex: Diesel engine

Based on arrangement of cylinder

• Horizontal engine
• Vertical engine
• V type engine
• In line engine
• Radial engine

 

HORIZONTAL ENGINE

VERTICAL ENGINE

V TYPE ENGINE

INLINE ENGINE

RADIAL ENGINE

Based on speed

• Low speed engine
• Medium speed engine
• High speed engine

Based on Number of cylinder

• Single cylinder engine
• Multi cylinder engine

 

SINGLE CYLINDER ENGINE

MULTI CYLINDER ENGINE

Based on Lubrication system

• Petrol or mist lubrication system
• Wet sump lubrication system
• Dry sump lubrication system