Fuel control system for an internal combustion engine using...

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

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Details

F02D 19/12 (2006.01) F02B 47/02 (2006.01) F02M 25/025 (2006.01) F02B 3/06 (2006.01) F02D 41/00 (2006.01)

Patent

CA 2266591

A method and system (10) for the control of the overall water content of an aqueous fuel in an internal combustion engine (12) is provided. The disclosed fuel control system (10) includes a post add water system (40) and a control valve (48) that is responsive to selected engine operating characteristics such as engine operating temperature (56), engine load (52), and carbon monoxide levels in the engine exhaust (58). The post add water system (40) is adapted for selectively providing an additional supply of purified water via the control valve (48) to the aqueous fuel in the fuel line (14). The fuel system controller (20) is operatively associated with the control valve (48) to regulate the quantity of water added and thereby control the overall content of water in the aqueous fuel emulsion delivered to the fuel injectors (34).

La présente invention concerne un procédé et un système (10) permettant de réguler le contenu total en eau d'un carburant aqueux de moteur à combustion interne (12). Le système de régulation de carburant (10) de la présente invention comprend un circuit d'alimentation en eau à adjonction postérieure (40) et une vanne de régulation (48) sensible à des caractéristiques choisies de fonctionnement du moteur, telles que la température de marche du moteur (56), la charge au moteur (52) et les niveaux d'oxyde de carbone des gaz d'échappement du moteur (58). Le circuit d'alimentation en eau à adjonction postérieure (40) est prévu pour délivrer de façon sélective, via la vanne de régulation (48), un apport supplémentaire en eau purifiée au carburant aqueux dans la tuyauterie à carburant (14). Le dispositif de commande (20) du circuit d'alimentation en carburant est associé de façon fonctionnelle à la vanne de régulation (48) de manière qu'il régule la quantité d'eau ajoutée et, ce faisant, le contenu total en eau de l'émulsion de carburant aqueux délivrée aux injecteurs de carburant (34).

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