F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
F02M 43/00 (2006.01) F02M 21/02 (2006.01) F02M 43/02 (2006.01) F02M 43/04 (2006.01) F02M 45/08 (2006.01) F02M 47/02 (2006.01) F02M 47/04 (2006.01) F02M 47/06 (2006.01) F02M 57/02 (2006.01) F02M 59/10 (2006.01) F02M 61/04 (2006.01) F02M 61/16 (2006.01) F02M 61/20 (2006.01)
Patent
CA 2465182
A dual fuel injection valve separately and independently injects two different fuels into a combustion chamber of an internal combustion engine. A first fuel is delivered to the injection valve at injection pressure and a second fuel is either raised to injection pressure by an intensifier (15) provided within the injection valve, or delivered to the injection valve at injection pressure. Electronically controlled valves (11,13) control hydraulic pressure in control chambers (20,25) disposed within the injection valve. The pressure of the hydraulic fluid in these control chambers is employed to independently actuate a hollow outer needle (17) that controls the injection of the first fuel. Disposed within the outer needle (16) is an inner needle that controls the injection of the second fuel. The outer needle closes against a seat associated with the injection valve body and the inner needle closes against a seat associated with the outer needle.
La présente invention concerne une soupape d'injection de carburants mixtes qui injecte de manière indépendante et séparée deux carburants différents dans une chambre de combustion d'un moteur à combustion interne. Un premier carburant est distribué à la soupape d'injection à une pression d'injection et un second carburant est soit élevé à la pression d'injection au moyen d'un multiplicateur de pression (15) monté dans la soupape d'injection, soit distribué à la soupape d'injection à une pression d'injection. Des soupapes à commande électronique (11, 13) commandent une pression hydraulique dans des chambres de commande (20, 25) placées dans la soupape d'injection. La pression du fluide hydraulique dans ces chambres de commande sert à actionner de manière indépendante un pointeau externe creux (17) qui commande l'injection du premier carburant. Un pointeau interne (16) placé dans ledit pointeau externe commande l'injection du second carburant. Ledit pointeau externe se ferme contre un siège qui est associé au corps de la soupape d'injection et le pointeau interne se ferme contre un siège qui est associé au pointeau externe.
Baker S. Michael
Douville Bradley D.
Lennox Timothy N.
Mumford David
Post Adrian J.
Mumford David
Oyen Wiggs Green & Mutala Llp
Westport Power Inc.
Westport Research Inc.
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