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AssigneeOutboard Marine Corporation
InventorsGregory J. Binversie, David J. Hall, Richard T. Tunkieicz, Paul W. Breckenfeld
Estimating the term…
An internal combustion engine including an engine block including a cylinder head defining a combustion chamber and having therein an opening communicating with the combustion chamber, and a combined fuel injection pump and nozzle including a housing fixed to the cylinder head and defining a high reluctance gap and a low pressure fuel chamber having an axis, a tubular member extending in the housing into the low pressure fuel chamber in coaxial relation to the axis, having therein an axial bore communicating with the low pressure fuel chamber, and at least partially defining a high pressure fuel chamber, and a nozzle assembly fixed to the housing, extending into the opening, communicating with the combustion chamber and with the axial bore, and including a valve member moveable to an open position in response to a fuel pressure in the high pressure fuel chamber above a predetermined level.
An internal combustion engine comprising an engine block including a member defining a portion of a combustion chamber and having therein an opening communicating with said portion of said combustion chamber, and a combined fuel injection pump and nozzle including a housing fixed to said member of said engine block and defining a high reluctance gap and a low pressure fuel chamber having an axis, and a tubular member extending in said low pressure fuel chamber in said housing in coaxial relation to said axis, said tubular member having therein an axial bore communicating with said low pressure fuel chamber, and said tubular member at least partially defining a high pressure fuel chamber, and a nozzle assembly fixed to said housing, extending into said opening, communicating with said combustion chamber and with said axial bore, and including a valve member moveable to an open position in response to a fuel pressure in said high pressure fuel chamber above a predetermined level.
A combined fuel injection pump and nozzle adapted to be mounted on an engine block and comprising a housing member defining a high reluctance gap and a low pressure fuel chamber having an axis, a tubular member extending from said housing member into said low pressure fuel chamber in coaxial relation to said axis, said tubular member having therein an axial bore communicating with said low pressure fuel chamber, and said tubular member at least partially defining a high pressure fuel chamber, and a nozzle assembly fixed to said housing member, communicating with said axial bore, and including a valve member moveable to an open position in response to a fuel pressure in said high pressure fuel chamber above a predetermined level.
A combined fuel injection pump and nozzle comprising a first housing member, a second housing member fixed to said first housing member and defining therebetween a high reluctance gap and a low pressure fuel chamber having an axis, a tubular member extending from one of said housing members into said low pressure fuel chamber in coaxial relation to said axis, said tubular member having therein an axial bore communicating with said low pressure fuel chamber, and said tubular member at least partially defining a high pressure fuel chamber, and a nozzle assembly fixed to said one housing member, adapted to be mounted on a cylinder head, communicating with said axial bore, and including a valve member moveable to an open position in response to a fuel pressure in said high pressure fuel chamber above a predetermined level.
A fuel injection pump and nozzle comprising a first housing member having an axis and including an end portion extending transversely to said axis, and a cylindrical bobbin supporting portion extending from end cap portion in concentric relation to said axis, and a second housing member fixed to said first housing member and including an end portion extending transversely to said axis, a cylindrical bobbin supporting portion extending from said end portion of said second housing member in concentric relation to said axis and in concentric alignment with and in spaced relation to said bobbin supporting portion of said first housing member to define therebetween a high reluctance gap, and a cylindrical housing portion extending from said end portion of said second housing member in co-axial relation to said axis and in the direction opposite to said second bobbin portion of said second housing member and defining a bore, a tubular member extending in co-axial relation to said axis, having therein an axial bore, and including an inner part rigidly fixed in said end portion of said second housing member, and a projecting part having an outer surface extending from said end portion of said second housing member in inwardly spaced relation to said bobbin supporting portion of said second housing member, and defining, with said bobbin supporting portions, a fuel chamber adapted to contain a fuel pumping assembly and communicating with said axial bore in said tubular member, and a valve assembly including a valve housing fixed in said bore of said cylindrical housing portion of said second housing member and including an axial bore communicating with said axial bore of said tubular member and having an end portion defining a valve seat, and a valve member moveable in said axial bore in said valve housing between a closed position engaged with said valve seat and an open position spaced from said valve seat.
A fuel injection pump and nozzle assembly comprising a fuel injection pump having an axis and comprising a first one-piece housing member including an end portion extending transversely to said axis, a cylindrical bobbin supporting portion extending from said end portion in concentric relation to said axis, and a cylindrical housing portion having a threaded open end and extending from said end portion in concentric relation to said axis, and in radially outwardly spaced relation from said bobbin supporting portion to partially define there between a bobbin compartment, a second one-piece housing member including an end portion extending transversely to said axis, a radially outer cylindrical housing portion extending from said end portion of said second housing member in concentric relation to said axis and having a threaded open end threadedly received in said threaded open end of said housing portion of said first housing member, and a cylindrical bobbin supporting portion extending from said end portion of said second housing member in concentric relation to said axis, and in concentric alignment with and in spaced relation to said bobbin supporting portion of said first housing member to define therebetween a high reluctance gap, and in radially inwardly spaced relation from said housing portion of said second housing member to partially define therebetween said bobbin compartment, a tubular member extending in co-axial relation to said axis, having therein an axial bore, and including an inner part rigidly fixed in said end portion of said second housing member, and a projecting part having an outer surface in inwardly spaced relation to said bobbin supporting portion of said second housing member, and extending into partially axially overlapping relation to said bobbin supporting portion of said first housing member, and defining with said bobbin supporting portions a low pressure fuel chamber, and one-way valve means located in said second housing member, communicating with said axial bore, and being selectively operable to permit flow from said axial bore for delivery to a fuel injecting nozzle and to prevent flow to said axial bore, an armature and valve assembly which has an outer surface radially separated from said bobbin supporting portions to further define therebetween said low pressure fuel chamber, which is axially movably supported on said outer surface of said projecting part of said tubular member, and which is operative in response to axial movement thereof relative to said tubular member to increase the pressure of the fuel in said axial bore in said tubular member to a relatively high pressure, and a bobbin contained in said bobbin compartment and including a cylindrical portion located adjacent said bobbin supporting portions and having opposite first and second ends, and a central flange extending from said cylindrical portion and including first and second transverse surfaces, a first o-ring sealingly engaged between said bobbin supporting portion of said first housing member and said first transverse surface of said bobbin, and a second o-ring sealingly engaged between said bobbin supporting surface of said second housing member and said second transverse surface of said bobbin.
A combined fuel injection pump and nozzle assembly comprising a first one-piece housing member fabricated of ferrous material, having an axis, and comprising an end portion extending transversely to said axis, a cylindrical bobbin supporting portion extending from said end portion in concentric relation to said axis, and a cylindrical housing portion extending from said end portion in concentric relation to said axis, and in radially outwardly spaced relation from said bobbin supporting portion to partially define therebetween a bobbin compartment, and having a threaded open end, a second one-piece housing member fabricated of ferrous material and including an end portion extending transversely to said axis, a cylindrical housing portion extending in concentric relation to said axis and having a threaded open end threadedly received in said open end of said housing portion of said first housing member, a cylindrical bobbin supporting portion extending from said end portion of said second housing member in concentric relation to said axis and in concentric alignment with and in spaced relation to said bobbin supporting portion of said first housing member to define therebetween a high reluctance gap, and in radially inwardly spaced relation from said housing portion of said second housing member to partially define therebetween said bobbin compartment, and a projecting portion extending from said end portion of said second housing member in the direction opposite from said bobbin supporting portion of said second housing member and having an axial bore concentric with said axis, a tubular member fabricated of ferrous material, extending in coaxial relation to said axis, having therein an axial bore, and including an inner part rigidly fixed in said end portion of said second housing member, and a projecting part having an outer surface in inwardly spaced relation to said bobbin portion of said second housing member, and extending from said end portion of said second housing member into partially axially overlapping relation to said bobbin supporting portion of said first housing member, and defining with said bobbin supporting portions a low pressure fuel chamber, a nozzle assembly fixed to said projecting portion and being adapted for direct communication with a combustion chamber, a one-way check valve located in said second housing member, communicating between said axial bore of said tubular member and said nozzle assembly, and being selectively operable to permit flow from said axial bore of said tubular member to said nozzle assembly and to prevent flow from said nozzle assembly to said axial bore of said tubular member, an armature and valve assembly which has an outer surface radially separated from said bobbin supporting portions and further defining therebetween said low pressure fuel chamber, which is axially movably supported on said projecting part of said tubular member, and which includes a bushing fabricated of non-ferrous material and including an outer surface, an end facing said end portion of said second housing member, and an interior bore in axially moveable sliding engagement on said outer surface of said projecting part of said tubular member, a sub-assembly fabricated of ferrous material, rigidly fixed on said outer surface of said bushing, and including an inner bore communicating with said axial bore of said tubular member to afford fuel flow therebetween and including a valve seat spaced from said end of said bushing, a valve member movable in and relative to said inner bore between spaced positions respectively preventing and permitting fuel flow through said inner bore and having a head located between said valve seat and said end of said bushing and including a valve surface in facing relation to said valve seat, and passage means affording fuel flow from said low pressure fuel chamber to said inner bore upstream of said valve seat, a bobbin fabricated of electrically insulating material, contained in said bobbin compartment and including a cylindrical portion located adjacent said bobbin supporting portions and having opposite first and second ends, and a central flange portion extending from said cylindrical portion into said gap and including first and second transverse surfaces, a first o-ring sealingly engaged between said bobbin supporting portion of said first housing member and said first transverse surface, and a second o-ring sealingly engaged between said bobbin supporting portion of said second housing member and said second transverse surface.
An internal combustion engine comprising an engine block including a member defining a portion of a combustion chamber and having therein an opening communicating with said portion of said combustion chamber, and a combined fuel injection pump and nozzle fixed to said member of said engine block and including a housing defining a high reluctance gap and a low pressure fuel chamber, and a tubular member extending in said low pressure fuel chamber in said housing and having therein an axial bore communicating with said low pressure fuel chamber, and a nozzle assembly fixed to said housing, extending into said opening, communicating between said combustion chamber and said axial bore, and including a valve member moveable to an open position in response to a fuel pressure above a predetermined level.
An internal combustion engine comprising an engine block including a member defining a portion of a combustion chamber and having therein an opening communicating with said portion of said combustion chamber, and a combined fuel injection pump and nozzle fixed to said member of said engine block and including a housing defining a high reluctance gap, a high pressure fuel chamber, and a low pressure fuel chamber, and a nozzle assembly fixed to said housing, extending into said opening, communicating between with said combustion chamber and said high pressure chamber, and including a valve member moveable to an open position in response to a fuel pressure above a predetermined level.
A combined fuel injection pump and nozzle adapted to be mounted on an engine block member having therein an opening communicating with a combustion chamber, said combined fuel injection pump and nozzle including a pump assembly defining a high reluctance gap, a high pressure fuel chamber, and a low pressure fuel chamber, and a nozzle assembly fixed to said pump assembly, communicating with said high pressure chamber, being adapted to extend into the opening and to communicate with the combustion chamber, and including a valve member moveable to an open position in response to a fuel pressure above a predetermined level.
A combined fuel injection pump and nozzle comprising a pump assembly having an axis, defining a high reluctance gap, a high pressure fuel chamber, and a low pressure fuel chamber in axial alignment with said low pressure fuel chamber, said combined fuel injection pump and nozzle including a first housing member, a second housing member fixed to said first housing member, and a tubular member extending in axial alignment with said high and low pressure fuel chambers and having therein an axial bore communicating with said low pressure fuel chamber, and a nozzle assembly fixed to said pump assembly, communicating with said high pressure fuel chamber, being adapted to communicate with a combustion chamber, and including a valve member moveable to an open position to supply fuel to the combustion chamber in response to a fuel pressure in said high pressure fuel chamber above a predetermined level.
Dependencies are inferred from the claim text.