An exhaust system is used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove. The entire system conveys burnt gases from the engine and includes one or more exhaust pipes. Depending on the overall system design, the exhaust gas may flow through one or more of:Cylinder head and exhaust manifold
A turbocharger to increase engine power.
A catalytic converter to reduce air pollution.
A muffler / silencer (UK/India), to reduce noise.
Exhaust manifold (chrome plated) on a car engine
Muffler, and tailpipe on a car
Exhaust piping and silencer (muffler) on a Ducati Monster motorcycle
Aftermarket exhaust manifold
Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline (petrol), diesel fuel, fuel oil, biodiesel blends, or coal. According to the type of engine, it is discharged into the atmosphere through an exhaust pipe, flue gas stack, or propelling nozzle. It often disperses downwind in a pattern called an exhaust plume.
Steam from tailpipe of cold car
Automobile exhaust
What looks like exhaust from jet engines is actually contrail.
Smog in New York City as viewed from the World Trade Center in 1988