| Inlet Manifold |
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In Automotive Engineering , an intake manifold or '''inlet manifold''' is a part of an Engine that supplies the Fuel / Air mixture to the Cylinder s. An '''exhaust manifold''' or '''header''' collects the Exhaust Gas es from multiple cylinders into one pipe. Due to the advance, power assisted Brake s, Cruise Control , Windscreen Wiper s, Power Window s, ventilation system valves, Etc ). This vacuum can also be used to 'suck' any Piston blow-by gases from the engine's crankcase. This is known as a ''closed crankcase ventilation'' or ''positive crankcase ventilation'' (PCV) system. This way the gases are burned with the fuel/air mixture. The intake manifold is located between the Carburetor and the Cylinder Head . On multi point Injected engines, the intake manifold holds the fuel injectors. Exhaust manifolds are generally and traditionally simple Cast Iron units which collect engine exhaust and deliver it to the exhaust pipe. However, when greater performance is required, this restrictive tube is often replaced with individual headers which are tuned for low restriction and improved performance. There are two types of headers. Collector style headers use pipes that merge into a collector, and can be utilized with mufflers. Collector headers can be used for the street or for a race car. Zoomie headers have no collectors, and are used exclusively on race cars. Headers have been widely available from aftermarket sources for decades, and some manufacturers have begun using them as original equipment. The Honda '' J30A2 '' engine does away with exhaust manifolds altogether, using an integral engine block passage to route gases directly to the Catalytic Converter . See also: Engine Tuning |
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