Caracterización de la válvula de admisión de un motor CFR

Abstract

The goal of the work is to characterize the engine gas exchange process by calculating the discharge coefficient across the admission valve of a CFR spark ignition engine. The mass flow rate for different valve lifts and upstream pressures was measured in a flow bench using the AVL method. As a result it was found a maximum discharge coefficient for a 0.5 mm lift no matter which value takes the static pressure upstream. One important conclusion of the research is that mass flow across the intake valve has a strong dependence on valve lift.