The Exhaust system and its parts:
The Exhaust has several functions. It is very important for the engine's
good operation. It reduces the noise made by the engine operation, it leads
noxious gases away from the cabin, and it keeps the ideal pressure for the
best engine performance, while collaborating on fuel saving.
The Exhaust operation begins at the engine of the vehicle. The explosion
of a compressed mixture causes the expansion of gases, which, in turn, move
the piston of a cylinder. Next the exhaust valves open up and the burnt gases
are expelled, producing noise. Since the engine has a set of cylinders, all of
them discharging gases under pressure, a succession of discharges takes place and,
keeping their tempo, they pass through the collecting pipe leading up to the muffler,
alternating higher and lower pressures and causing sound waves and considerable
vibration in the muffler.
Every vehicle model has its own exhaust system, designed for the characteristics
of that vehicle. Usually, the parts of an Exhaust are: