1. Engine Designs & Classifications
Engines can be classified by…
their design
type of fuel used
number of cylinders
arrangement of the cylinders

2. Engine Design
Most automotive engines are piston driven…

3. Others are not…

4. Type of Fuel Used
Gasoline
Diesel
CNG, LPG

5. Number of Cylinders Gasoline & diesel engines can have…
2 cylinders - Citroen
3 cylinders – Chevy Sprint
4 cylinders
5 cylinders - Audi
6 cylinders
8 cylinders

6. 10 cylinders – Dodge Viper, Ford Pickups
12 cylinders – Jaguar, Ferrari
16 cylinders - Cadillac

7. Cylinder Arrangement
Cylinders can be arranged in-line…

8. Cylinder Arrangement
Cylinders can be arranged in a “V” formation

9. Cylinder Arrangement Cylinders can be arranged horizontally
Subaru & Porsche 911 (aka: opposed or boxer engine)

10. Cylinder Arrangement Cylinders can be arranged in a “W” formation
(Volkswagen)

11. Cylinder Arrangement
Some airplane engines have their cylinders arranged radially…

12. Valve Arrangements
Many new engines use more than 2 valves per cylinder…