1. Car Exhaust System By: Saoud Al-Kuwari

2. Main Ideas: Definition Main parts How it works Past Present Future

3. Definition: Exhaust system carries away the gases created when the fuel and air are burned in the engine. These gases are harmful to humans and our life.

4. Main parts: Exhaust manifold Catalytic converter Oxygen sensor Exhaust pipe Muffler

5. How it works

7. In The Past: Made from iron. Created a lot of noise. Harmful carbon and hydrocarbons.

8. Present: Made from stainless steel or aluminum. Less noisy. water steam and carbon dioxide.

9. Future: Hybrid cars. Electric cars.

10. Sources: http://www.autoeducation.com/autoshop101/exhaust.htm http://www.2carpros.com/articles/how-exhaust-systems-work http://www.kwik-fit.com/how-exhausts-work.asp