Fuel injector for an internal combustion engine

F - Mech Eng,Light,Heat,Weapons – 02 – M

Patent

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Details

F02M 57/00 (2006.01) F02D 41/00 (2006.01) F02D 41/06 (2006.01) F02D 41/22 (2006.01) F02M 21/06 (2006.01) F02M 31/18 (2006.01) F02M 45/08 (2006.01) F02M 51/06 (2006.01) F02M 53/06 (2006.01) F02M 61/08 (2006.01) F02M 61/16 (2006.01) F02M 61/18 (2006.01) F02M 65/00 (2006.01) F02D 41/18 (2006.01) F02M 69/04 (2006.01) F02M 69/30 (2006.01)

Patent

CA 2480108

A fuel injector for vaporizing a liquid fuel for use in an internal combustion engine. The fuel injector includes at least one capillary flow passage (12), said at least one capillary flow passage (12) having an inlet end (14) and an outlet end (16), a fluid control valve (18) for placing said inlet end of said at least one capillary flow passage in fluid communication with the liquid fuel source (F) and introducing the liquid fuel in a substantially liquid state; and a heat source (20) arranged along said at least one capillary flow passage (12), said heat source (20) operable to heat the liquid fuel in said at least one capillary flow passage to a level sufficient to change at least a portion thereof from the liquid state to a vapor state and deliver a stream of substantially vaporized fuel from said outlet end said at least one capillary flow passage (12).

L'invention concerne un injecteur de combustible permettant de vaporiser un combustible liquide destiné à un moteur à combustion interne. Cet injecteur de combustible comprend au moins un passage d'écoulement capillaire (12), ledit passage d'écoulement capillaire (12) possédant une extrémité d'entrée (14) et une extrémité de sortie (16), une soupape de commande de fluide (18) servant à placer ladite extrémité d'entrée du passage d'écoulement capillaire en communication fluidique avec la source de combustible liquide (F) et à introduire ledit combustible liquide dans un état pratiquement liquide, et une source de chaleur (20) disposée le long du passage d'écoulement capillaire (12). Cette source de chaleur (20) permet de chauffer le combustible liquide dans ledit passage d'écoulement à un niveau suffisant de manière à modifier au moins une portion correspondante de l'état liquide à l'état de vapeur et à distribuer un flux de combustible pratiquement vaporisé de ladite extrémité de sortie dudit passage d'écoulement capillaire (12).

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