The restriction produced by the air filtration system versus the restriction produced by the air filter

The air filtration system for an internal combustion engine comprises the air filter, the filter housing and the intake air duct which conducts the air flow from the vehicle grille to the filter housing. This generates gaso-dynamic resistances to the air intake into the engine. The air filter housing and the intake air duct are often mounted in the engine compartment mainly where it fits better and less according to the air flow and noise reduction criteria. The paper aims to show the contribution of the restriction produced by the filter housing and the intake air duct to the total restriction produced by the air filtration system. Several air filtration systems from vehicles fitted with both spark-ignition engines and diesel engines are tested. The results show that the restriction produced by the intake air duct system as well as the air filter housing have a significant contribution to the total restriction produced by the air filtration system of a vehicle engine.

Abstract licence: CC BY

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