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The air intake system channels clean air and fuel to an internal combustion engine. The primary function is to channel clean and cool air to the engine. In indirect injection engines the fuel is added at the last point before the air fuel mixture enters the cylinder head and passes through the air intake valve. … Read more
The main function of the engine inlet and exhaust valves is to let air in and out of the cylinders. Air Intake Valve – controls the air and fuel flow into an internal combustion engines. Bounce – If the speed of valve is closing too high, the valve can hit the seat so hard it … Read more
A term generally used to describe aerodynamic noise produced when a gas flows within a duct or when the gas exits the duct, hence flow noise. This is a typical problem observed in the exhaust systems of internal combustion engines and high engine rotational speeds and hence high gas flow rates. There is a balance … Read more
There are a number of different ways to attenuate the sound waves propagating down a duct (eg air intake, exhaust system) and I thought it would be good to list these different acoustic filter elements, how they work and their effect on the sound waves. Absorptive Duct Absorption within ducts is used to break up … Read more
Exhaust system design is primarily about managing the gases ejected from an engine as waste products are transported away from the engine using an exhaust system. The main features that must be considered are: Acoustic design – Acoustic Ducts, Acoustic Filter Elements (eg Silencer), Flow Noise, Shell radiated noise Construction and manufacturing process Durability Dynamic … Read more