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Exhausts

How an Exhaust System Works

The exhaust system in your car does three jobs; first it transfers poisonous exhaust gases from the engine to the rear of the car. It then reduces the engine noise while running. Finally, it converts unspent fuel into spent fuel with the help of a catalytic converter. The exhaust system consists of an exhaust manifold, exhaust pipe, catalytic converter, silencers and tail pipe.

System Components

Exhaust Manifold: bolted to the cylinder head and is used to gather exhaust gases from the many cylinder ports to one location where the head pipe is connected.
Front Pipe: the tube that connects the exhaust manifold with a exhaust flange and the other end to the catalytic converter
Exhaust Flange: the connector union between the exhaust manifold and the front pipe
Exhaust Pipe: the pipe that is used to connect the various components of the exhaust system

Silencer: used to reduce the audible sound frequency developed by the engine.
Catalytic Converter: used to convert unused fuel into completely spent fuel
Secondary Silencer: sometimes called a resonator the secondary silencer furthers the sound deadening of the engine exhaust.
Exhaust system hanger: a metal strap connecting the exhaust system to the bottom of the car. They are usually made with a rubber insulator.
Tail Pipe: the tube that is connected to the silencer that continues to the back of the car.

The exhaust system is manufactured from corrosion resistant material. The engine produces water along with the exhaust gases as a natural by product of the combustion process. This is why a small amount of water and steam is observed coming from the exhaust pipe when the car is cold. As the engine heats up the water is vaporized quickly so the moisture is not visible.