Fuel injector for an internal combustion engine

Details Fuel injector for an internal combustion engine Fuel injector for an internal combustion engine

F - Mech Eng,Light,Heat,Weapons

02

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F02M 57/00 (2006.01) F02B 77/04 (2006.01) F02D 41/00 (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)

Patent

CA 2480083

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) , the at least one capillary flow passage (12) having an inlet end (14) and an outlet end (16), the capillary flow passage comprises a channel formed within a monolithic body produced from a material selected from the group consisting of ceramics, polymers, metals and composites thereof or a multi-layer ceramic body, a fluid control valve (18) for placing the inlet end of the at least one capillary flow passage (12) in fluid communication with the liquid fuel source and introducing the liquid fuel in a substantially liquid state, a heat source (20) arranged along the at least one capillary flow passage, the heat source (20) operable to heat the liquid fuel in the at least one capillary flow passage (12) 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 the outlet end of the at least one capillary flow passage.

L'invention porte sur un injecteur pour moteur à combustion interne, à vaporisation du carburant, comportant: au moins un passage capillaire d'écoulement (12) présentant une extrémité d'entrée (14) et une extrémité de sortie (16) et comprenant un canal usiné dans un bloc monolithique d'un matériau choisi parmi des céramiques, des polymères, des métaux ou des composites en étant faits, ou dans un bloc multicouche de céramique; une soupape (18) de régulation de débit reliant l'extrémité d'entrée du passage (12) à une source de carburant et introduisant le carburant à l'état sensiblement liquide dans le passage (12); une source de chaleur (20) disposée le long du passage capillaire (12) et portant le carburant liquide présent dans le passage à une température suffisante pour le vaporiser au moins en partie et l'éjecter sensiblement vaporisé par l'extrémité de sortie du passage capillaire.

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