Direct injection propane fuel system for diesel engine...

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

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F02M 31/18 (2006.01) F02B 43/00 (2006.01) F02M 21/02 (2006.01) F02B 1/04 (2006.01) F02B 3/06 (2006.01) F02B 75/12 (2006.01)

Patent

CA 2176818

A liquid propane injection system (10) for a diesel engine (14) includes a liquid propane fuel tank (12), a pump (20), a heat exchanger (34), a reservoir (42), and an injector (48). The pump (20) receives liquid propane from the liquid propane fuel tank (12), and increases the pressure of the received liquid propane to a level suitable for use by the diesel engine (14). The heat exchanger (34) receives liquid propane from the pump (20), and vaporizes the liquid propane. The reservoir (42) stores vaporized liquid propane received from the heat exchanger (34), and has sufficient storage capacity to compensate for any time lag between instantaneous engine fuel demand and the supply of liquid propane by the pump (20). The injector (48) receives vaporized liquid propane from the reservoir (42), and injects the vaporized liquid propane into a combustion chamber (74) of the diesel engine (14).

L'invention concerne un système d'injection (10) de propane liquide pour un moteur diesel (14). Ce système comprend une cuve (12) de carburant sous forme de propane liquide, une pompe (20), un échangeur de chaleur (34), un réservoir (42) et un injecteur (48). La pompe (20) reçoit du propane liquide provenant de la cuve (12) de carburant et augmente la pression du propane liquide reçu à un niveau approprié pour être utilisé par le moteur diesel (14). L'échangeur de chaleur (34) reçoit du propane liquide provenant de la pompe (20) et le vaporise . Le réservoir (42) stocke le propane liquide vaporisé reçu de l'échangeur de chaleur (34) et présente une capacité de stockage suffisante pour compenser le décalage entre la demande instantanée de carburant du moteur et l'alimentation en propane liquide par la pompe (20). L'injecteur (48) reçoit du propane liquide vaporisé provenant du réservoir (42) et l'injecte dans une chambre de combustion (74) du moteur diesel (14).

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