Fuel injection pump

Details Fuel injection pump Fuel injection pump

F - Mech Eng,Light,Heat,Weapons

02

M

123/118

F02M 59/00 (2006.01) F02M 55/00 (2006.01)

Patent

CA 1105338

- 9 - FUEL INJECTION PUMP Abstract A fuel injection pump (14) has a barrel (22) with a central bore (23) communicating through axially staggered fuel inlet and outlet ports (66,64) with an outer peripheral recess (56) in the barrel which, in cooperation with a fuel pump housing (16), forms an annular fuel receiving cavity (58) about the pump barrel. A relatively large fuel reservoir (50) in the housing communicates with the annular cavity (58) through fuel inlet and outlet conduits (66,64) in the housing (16), the outlet conduit (64) being aligned with the outlet port (60) in the pump barrel. A plunger (24) having a scroll surface at one end is rotatably and reciprocably received in the pump barrel bore (23), and the scroll surface is selectively registrable with the fuel ports (60, 62). A pulse shield (93) of hardened material is disposed within the fuel reservoir (50) in alignment with the fuel outlet conduit (64) to deflect fuel from the outlet conduit into the main portion of the reservoir and to prevent erosion of the housing surfaces.

334625

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