Inlet system for a piston internal combustion engine

Details Inlet system for a piston internal combustion engine Inlet system for a piston internal combustion engine

F - Mech Eng,Light,Heat,Weapons

02

B

F02B 27/02 (2006.01) F02D 9/14 (2006.01) F02F 1/42 (2006.01) F02B 75/18 (2006.01)

Patent

CA 2271626

An inlet system is disclosed for a piston internal combustion engine having at least one cylinder (4) with several inlet ducts (10, 11) and a manifold with an inlet pipe (13) joined to the inlet ducts. An intake valve works in each inlet duct (10, 11). The inlet system is characterised in that the inlet pipe (13) has a partition (17) that can be moved, depending on the state of operation of the internal combustion engine, from a position in which the cross-section of the flow path is reduced and only one inlet duct (10) is open to a position in which the flow path has maximum cross-section and all intake ducts (10, 11) are open.

L'invention concerne un système d'admission d'un moteur à combustion interne à piston, constitué d'au moins un cylindre (4) doté de plusieurs entrées d'admission (10, 11) dans chacune desquelles travaille respectivement une soupape d'admisison, et d'une tubulure d'admission dotée d'un tuyau d'admission (13) relié aux entrées d'admission. Ce système est caractérisé en ce que le tuyau d'admission (13) présente une paroi de séparation (17) qui se meut en fonction de l'état de fonctionnement du moteur à combustion interne, passant d'une position où seule une entrée d'admission (10) est ouverte, formant ainsi une voie d'écoulement de section réduite, à une position où toutes les entrées d'admission (10, 11) sont ouvertes, formant ainsi une voie d'écoulement de section maximale.

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