F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
F02M 61/08 (2006.01) F02M 61/06 (2006.01)
Patent
CA 2128426
An injector nozzle for a fuel injected internal combustion engine having a selectively openable nozzle for the delivery of fuel to the engine combustion chamber, the nozzle comprising a port (17) having an internal annular surface and a valve member (13) having an external annular surface coaxial with respect to the internal annular surface of the port (17). The valve member (13) being axially movable relative to the port (17) to selectively provide an annular passage therebetween for the delivery of the fuel or sealed contact therebetween to prevent the delivery of fuel. The valve member (13) has a coaxial projection (30) extending beyond the extremity of the external annular surface and positioned so the fuel plume issuing from the nozzle will follow a path based on the external surface (33) of the projection (30) and will pass therealong that external surface (33), to issue from the lower extremity thereof in a substantially coaxial relation to the nozzle. The projection (30) preferably is necked down immediately adjacent the valve member (13) and thereafter is of a converging circular shape, generally of an inverted truncated conical shape. The projection (30) provides a surface (33) which aids in the control of the fuel plume shape and corrects disturbances to that shape caused by deposits in or on the surface of the nozzle port (17) or valve member (13).
Bereskin & Parr Llp
Orbital Engine Company (australia) Pty. Limited
LandOfFree
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