Exhaust manifold
In automotive engineering, an intake manifold or inlet manifold is a part of an engine that supplies the fuel/air mixture to the cylinders. An exhaust manifold or header collects the exhaust gases from multiple cylinders into one pipe.
Due to the sucking effect of the downward movement of the pistons in a reciprocating piston engine, a partial vacuum (lower than atmospheric pressure) exists in the intake manifold. This vacuum can be used as a source of automobile ancillary power, used to drive auxiliary systems (ignition advance, power assisted brakes, cruise control, front window wipers, ventilation system valves etc).
The intake manifold is located between the carburetor and the cylinder head. On injected engines, the intake nmanifold holds the fuel injectors.
