Improvement to internal combustion engines

F - Mech Eng,Light,Heat,Weapons – 01 – L

Patent

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F01L 1/28 (2006.01) F01L 3/24 (2006.01) F02B 25/14 (2006.01) F02B 3/06 (2006.01)

Patent

CA 2142468

Internal combustion engines with a cylindrical working chamber (1) in which there slides a piston (3), and which is closed by a cylinder head (4) with a device (5) for injecting atomized liquid fuel under high pressure and operating on the two-stroke cycle with a loop-scavenging system across the cylinder head, with two axisymmetric valves with coincident axes, one of these, an external, inlet valve (7) interacting with a seat (15) in the cylinder head and the other, an exhaust valve (6), exhibiting a tubular shape with a bearing surface applied against a seat (16) formed at the lower part of the inlet valve (7), the inlet valve opening towards the working chamber and the exhaust valve opening in the opposite direction, in order to delimit an exhaust passage (8) between them, the injection device (5) emerging in the working chamber substantially at the centre of a central hub (21) borne by the cylinder head and about which the exhaust valve (6) slides.

Moteurs à combustion interne avec une chambre de travail cylindrique (1) dans laquelle coulisse un piston (3), et fermée par une culasse (4) avec un dispositif d'injection (5) de combustible liquide pulvérisé sous haute pression et fonctionnant selon le cycle à deux temps, avec un système de balayage en boucle à travers la culasse, avec deux soupapes de révolution et d'axes confondus, l'une, d'admission (7), externe coopérant avec un siège (15) de la culasse, l'autre, d'échappement (6), présentant une forme tubulaire avec une portée s'appliquant contre un siège (16) formé à la partie inférieure de la soupape d'admission (7), la soupape d'admission s'ouvrant vers la chambre de travail et la soupape d'échappement s'ouvrant en direction opposée, pour délimiter, entre elles, un passage d'échappement (8), le dispositif d'injection (5) débouchant dans la chambre de travail sensiblement au centre d'un moyeu central (21) porté par la culasse et autour duquel coulisse la soupape d'échappement (6).

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