An exhaust pipe is usually a pipe used to guide waste exhaust gases away from a controlled combustion inside an engine or stove. The word pipe can refer to: The basic cylindrical pipe shape a tubular man-made channel, generally round in cross section, in steel or concrete for transporting or guiding a fluid substance see plumbing and pipeline transport used in construction as column, truss element or space frame in mechanical engineering... Exhaust gas is gas which occurs as a result of combustion of fuel such as gasoline/petrol or diesel. ... Combustion or burning is an exothermic reaction between a substance (the fuel) and a gas (the oxidizer) to release heat. ... An engine is something that produces some effect from a given input. ... A stove is a heat-producing device. ...

An exhaust pipe must be carefully 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 properly 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 through or near any combustible materials. A furnace is a device for heating air or any other fluid. ... Carbon monoxide, chemical formula CO, is a colourless, odourless, flammable and highly toxic gas. ... The word exhaust can mean:- A verb meaning tire out, as in After the long gallop, his horse was exhausted. ...

An automobile's exhaust system usually connects to the exhaust manifold and usually includes a muffler (UK: silencer) to reduce engine noise, and often in recent years a catalytic converter to reduce the emissions that contribute to air pollution. A small variety of cars, the most popular kind of automobile. ... In automotive engineering, an intake manifold or inlet manifold is a part of an engine that supplies the fuel/air mixture to the cylinders. ... A muffler (known as a silencer in the United Kingdom and other areas) is a device for reducing the level of noise emitted by a machine, most commonly internal combustion engines. ... The United Kingdom of Great Britain and Northern Ireland is a country in western Europe, and member of the Commonwealth of Nations, the G8, the European Union, and NATO. Usually known simply as the United Kingdom, the UK, or (inaccurately) as Great Britain or Britain, the UK has four constituent... The word silencer can mean:- A noise-suppressor on the end of a guns barrel. ... In an automobiles exhaust system, a catalytic converter provides an environment for a chemical reaction where unburned hydrocarbons completely combust. ... This power plant in New Mexico releases sulfur dioxide and particulate matter into the air. ...

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 pressure 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. The two-stroke cycle of an internal combustion engine differs from the more common four-stroke cycle by having only two strokes (linear movements of the piston) instead of four, although the same four operations (intake, compression, power, exhaust) still occur. ... A pump is a mechanical device used to move liquids or gases. ...

A chimney serves a similar function in a stationary structure. Chimney stacks on a Newcastle upon Tyne building A chimney is a system for venting hot gases and smoke from a stove, furnace or fireplace to the outside atmosphere. ...

See also

• Automobile emissions control