Auto Transport Exhaust pipe

An exhaust pipe must be cautiously designed to carry toxic and/or noxious gases away from the users of the machine. Indoor generators and furnaces can quickly fill an enclosed space with carbon monoxide or other poisonous exhaust if they are not correctly vented to the outdoors. Also, the exhaust gases from most types of machine are very hot; the pipe must be heat-resistant, and it must not pass from side to side or near any combustible materials.

An automobile's exhaust system typically connects to the exhaust manifold and usually includes a muffler (British English: silencer) to reduce engine noise, and often in recent years a catalytic converter to decrease the emissions that contribute to air pollution.

In a two-stroke engine, such as that used on dirt bikes, a bulge in the exhaust pipe known as an expansion chamber uses the force of the exhaust to create a pump that squeezes more air and fuel into the cylinder during the intake stroke. This provides greater power and fuel efficiency.

A chimney serves a similar function in a motionless structure.