Fuel system

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

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Details

F02M 37/04 (2006.01)

Patent

CA 2564479

A fuel system [100] for a diesel engine [102] may have a fuel tank [106], a fuel pump [110], a fuel filter module [108], and a fuel rail [112]. The fuel filter module [108] has a vacuum side [118] and a pressure side [120]. The vacuum side [118] is connected to the fuel tank [106] and to the inlet side [122] of the fuel pump [110]. The pressure side [120] is connected to the outlet side [124] of the fuel pump [110] and to the fuel rail [112]. The fuel filter module [108] has a pressure regulator [138] and a filter element [140] in the pressure side [120]. The pressure regulator [138] is disposed between the outlet side [124]of the fuel pump [110] and the filter element [140]. The pressure regulator [138] recirculates unfiltered fuel to the vacuum side [118] of the fuel filter module [108].

Selon l'invention, un circuit d'alimentation (100) pour moteur diesel (102) peut comporter un réservoir de carburant (106), une pompe à carburant (110), un module de filtre à carburant (108) et un rail de carburant (112). Ledit module de filtre à carburant (108) présente un côté sous vide (118) et un côté sous pression (120). Ledit côté sous vide (118) est relié au réservoir de carburant (106) et au côté d'entrée (122) de la pompe à carburant (110). Le côté sous pression (120) est relié au côté de sortie (124) de la pompe à carburant (110) et au rail de carburant (112). Ce module de filtre à carburant (108) comporte un régulateur de pression (138) et un élément de filtre (140) dans le côté sous pression (120). Ledit régulateur de pression (138) est placé entre le côté de sortie (124) de la pompe à carburant (110) et l'élément de filtre (140). Ce régulateur de pression (138) sert à faire recirculer le carburant non filtré jusqu'au côté sous vide (118) du module de filtre à carburant(108).

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