A dual fuel supply system for an indirect-injection system...

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

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Details

F02D 19/08 (2006.01) F02M 31/20 (2006.01) F02M 37/04 (2006.01) F02M 43/00 (2006.01)

Patent

CA 2758737

The present invention relates to fuel systems for diesel engines. In particular, the invention relates to a dual fuel supply system (10) for a diesel engine having an indirect-injection system (12). The invention extends to a diesel engine incorporating the dual fuel supply system (10) and to a vehicle that incorporates a diesel engine having the dual fuel supply system (10). The dual-fuel supply system (10) includes a mixed fuel supply system (17) that includes a first stage (14) having a diesel tank (42) and LPG tank (44), and as second stage (16) to supply the fuel mixture to the injection system (12). The dual-fuel supply system (10) also includes diesel supply system (80) for delivering diesel to the injection system (12). Moreover, the dual fuel system (10) is configured to permit selective change over between the diesel supply system (80) and the mixed fuel system (17) to supply the injection system (12) selectively with either diesel or liquid fuel mixture respectively.

La présente invention porte sur des systèmes d'alimentation en carburant pour des moteurs Diesel. En particulier, l'invention porte sur un système d'alimentation à deux carburants (10) pour un moteur Diesel ayant un système d'injection indirecte (12). L'invention porte sur un moteur Diesel incorporant le système d'alimentation à deux carburants (10) et sur un véhicule qui incorpore un moteur Diesel ayant le système d'alimentation à deux carburants (10). Le système d'alimentation à deux carburants (10) comprend un système d'alimentation en carburant mélangé (17) qui comprend un premier étage (14) ayant un réservoir de carburant Diesel (42) et un réservoir de gaz de pétrole liquéfié (44), et un second étage (16) pour distribuer le mélange de carburant au système d'injection (12). Le système d'alimentation à deux carburants (10) comprend également un système d'alimentation en carburant Diesel (80) pour distribuer du carburant Diesel au système d'injection (12). De plus, le système d'alimentation à deux carburants (10) est configuré pour permettre un changement sélectif entre le système d'alimentation en carburant Diesel (80) et le système d'alimentation en carburant mélangé (17) pour alimenter le système d'injection (12) de façon sélective avec, respectivement, soit du carburant Diesel, soit un mélange de carburant liquide.

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