(1) Types of Ignition
- Spark Ignition (SI) Engine.
- Compression Ignition (CI) Engine.
(2) Type of fuel used
- Petrol
- Diesel
- Gas
(3) Type of Cycle Used
- Otto Cycle
- Diesel Cycle
- Dual Cycle
(4) Type of Cooling Method
- Water Cooled
- Air Cooled
(5) Number of Stroke per Cycle
- Two Stroke
- Four Stroke
(6) Number of Cycliner
- Single
- Two
- Three
- Four
- Six
- Eight
- Twelve
- Sixteen
(7)Cyclinder Arrangement
- Horizontal
- Vertical
- Oppossed
- Radial
- V
(8) Applications
- Automobiles
- Marine
- Locomotive
- Aircraft
- Stationary
(9) Speed of Engine
- Low
- Medium
- High
(10) Type of Lubrication
- Wet sump
- Dry sump.