Fuel injection pump and replaceable check valve therefor

Details Fuel injection pump and replaceable check valve therefor Fuel injection pump and replaceable check valve therefor

F - Mech Eng,Light,Heat,Weapons

02

M

123/122

F02M 41/06 (2006.01)

Patent

CA 1066574

ABSTRACT OF THE DISCLOSURE The present invention provides a liquid fuel injection pump for supplying measured charges of fuel to an internal combustion engine comprising a distributor rotor having a transverse bore and a pump chamber in which the charges are pressurized to high pressure for injection into the cylinders of said engine, a transfer pump, a passage for delivering the output of said transfer pump to said pump chamber through said transverse bore, and a replaceable check valve cartridge sli- dably mounted in said transverse bore, said check valve car- tridge comprising a prefabricated intrgrated check valve as- sembly comprising a cylindrical barrel, a hollow valve seat secured to said barrel at one end thereof, a stop secured to the barrel at the other end thereof, a ball for seating on said valve seat, a closure piston slidably mounted within said barrel and engageable with said ball for seating the ball following the filling stroke of the pump chamber, means for connecting the output of said transfer pump to a cavity at the end of said piston to urge the piston in a direction to seat the ball and means for removably retaining said cartridge in said transverse bore.

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