F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
103/2
F02M 39/00 (2006.01) F02M 55/00 (2006.01) F02M 59/26 (2006.01) F02M 59/44 (2006.01)
Patent
CA 1073267
ABSTRACT OF DISCLOSURE A fuel injection pump includes a pumping plunger which is slidably mounted within a cylinder formed in a barrel. The barrel is provided with a pair of opposed ports which are covered by the plunger during its inward movement. The afore- said ports permit fuel to flow into the pumping chamber when the plunger moves outwardly. Cavities can form in the fuel in the aforesaid ports prior to closure of the ports by the plunger and such cavities when the collapse can cause damage to the working surfaces of the plunger and cylinder. Channel means is provided to allow fuel to flow from the pumping chamber into at least one port to displace the cav- ities therefrom during the pumping stroke of the plunger.
295624
Ellis Arthur J.
Howarth Alan
LandOfFree
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