Engines can be classified into two main types: internal combustion engines which convert thermal energy from combustion into mechanical energy within the engine itself, and external combustion engines which obtain thermal energy from an external source. Internal combustion engines are further divided based on ignition type into compression ignition or diesel engines and spark ignition gasoline engines, and can also be classified by fuel type, design as either reciprocating piston engines or rotary Wankel engines, and by number of strokes.

1. ENGINES
PPT by-
SATYA AYYALASOMAYAJULA
MECHANICAL ENGINEERING

2. INTRODUCTION
Engine: Engine is a device which converts
thermal energy into mechanical energy or power
to produce some force or motion.

3. • ENGINES

4. CLASSIFICATION OF ENGINES
Engines are mainly classified as
two types .They are:
1.Internal Combustion (I.C)
Engine
2.External Combustion (E.C)
Engine

5. Internal Combustion (I.C) Engine

6. External Combustion (E.C) Engine

8. Based on the ignition
Compression ignition engine Spark ignition engine

9. Based on the fuel used

10. Based on design of engine
Reciprocating engine Rotary engine
(piston engine) (Wankel engine)

11. Based on number of strokes