Fluid sprinkling – spraying – and diffusing – Including valve means in flow line – Reciprocating
Reexamination Certificate
2000-12-29
2003-05-20
Mar, Michael (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Including valve means in flow line
Reciprocating
C239S585300, C239S585400, C239S585500
Reexamination Certificate
active
06565019
ABSTRACT:
BACKGROUND OF THE INVENTION
It is believed that examples of known fuel injection systems use an injector to dispense a quantity of fuel that is to be combusted in an internal combustion engine. It is also believed that the quantity of fuel that is dispensed is varied in accordance with a number of engine parameters such as engine speed, engine load, engine emissions, etc.
It is believed that examples of known electronic fuel injection systems monitor at least one of the engine parameters and electrically operate the injector to dispense the fuel. It is believed that examples of known injectors use electromagnetic coils, piezoelectric elements, or magnetostrictive materials to actuate a valve.
It is believed that examples of known valves for injectors include a closure member that is movable with respect to a seat. Fuel flow through the injector is believed to be prohibited when the closure member sealingly contacts the seat, and fuel flow through the injector is believed to be permitted when the closure member is separated from the seat.
It is believed that examples of known injectors include a spring providing a force biasing the closure member toward the seat. It is also believed that this biasing force is adjustable in order to set the dynamic properties of the closure member movement with respect to the seat.
It is further believed that examples of known injectors include a filter for separating particles from the fuel flow, and include a seal at a connection of the injector to a fuel source.
It is believed that such examples of the known injectors have a number of disadvantages. It is believed that examples of known injectors must be assembled entirely in an environment that is substantially free of contaminants. It is also believed that examples of known injectors can only be tested after final assembly has been completed.
SUMMARY OF THE INVENTION
According to the present invention, a fuel injector can comprise a plurality of modules, each of which can be independently assembled and tested. According to one embodiment of the present invention, the modules can comprise a fluid handling subassembly and an electrical subassembly. These subassemblies can be subsequently assembled to provide a fuel injector according to the present invention.
The present invention provides for a fuel injector for use with an internal combustion engine, the fuel injector comprising, a tube assembly having a longitudinal axis extending between a first end and a second end, a seat secured at the second end of the tube assembly, the seat defining an opening, an armature assembly disposed within the tube assembly, a member biasing the armature assembly toward the seat, an orifice plate proximate the seat and distal from the armature assembly, a retainer having a first portion resiliently engaging the tube assembly and a second portion biasing the orifice plate toward the seat, an adjusting tube located in the tube assembly, the adjusting tube engaging the member and adjusting a biasing force of the member, and a solenoid coil surrounding a portion of the tube assembly, the solenoid coil being operable to displace the armature assembly with respect to the seat.
The present invention further provides for a fuel injector for use with an internal combustion engine, the fuel injector comprising, a valve group subassembly including, a tube assembly having a longitudinal axis extending between a first end and a second end, a seat secured at the second end of the tube assembly, the seat defining an opening, an armature assembly disposed within the tube assembly, a member biasing the armature assembly toward the seat, an orifice plate proximate the seat and distal from the armature assembly, a retainer having a first portion resiliently engaging the tube assembly and a second portion biasing the orifice plate toward the seat, an adjusting tube located in the tube assembly, the adjusting tube engaging the member and adjusting a biasing force of the member, a first attaching portion, and a coil group subassembly including, a solenoid coil operable to displace the armature assembly with respect to the seat, and a second attaching portion fixedly connected to the first attaching portion.
The present invention also provides for a method of assembling a fuel injector, comprising, providing a valve group subassembly including, a tube assembly having a longitudinal axis extending between a first end and a second end, a seat secured at the second end of the tube assembly, the seat defining an opening, an armature assembly disposed within the tube assembly, a member biasing the armature assembly toward the seat, an orifice plate proximate the seat and distal from the armature assembly, a retainer having a first portion resiliently engaging the tube assembly and a second portion biasing the orifice plate toward the seat, an adjusting tube located in the tube assembly, the adjusting tube engaging the member and adjusting a biasing force of the member, a first attaching portion, providing a coil group subassembly, a solenoid coil operable to displace the armature assembly with respect to the seat, and a second attaching portion, inserting the valve group subassembly into the coil group subassembly, and connecting the first and second attaching portions together.
REFERENCES:
patent: 3567135 (1971-03-01), Gebert
patent: 4342427 (1982-08-01), Gray
patent: 4520962 (1985-06-01), Momono et al.
patent: 4552312 (1985-11-01), Ohno et al.
patent: 4597558 (1986-07-01), Hafner et al.
patent: 4662567 (1987-05-01), Knapp
patent: 4771984 (1988-09-01), Szablewski et al.
patent: 4875658 (1989-10-01), Asai
patent: 4915350 (1990-04-01), Babitzka et al.
patent: 4944486 (1990-07-01), Babitzka
patent: 4946107 (1990-08-01), Hunt
patent: 4951878 (1990-08-01), Casey et al.
patent: 4984744 (1991-01-01), Babitzka et al.
patent: 4991557 (1991-02-01), DeGrace et al.
patent: 5038738 (1991-08-01), Hafner et al.
patent: 5054691 (1991-10-01), Huang et al.
patent: 5058554 (1991-10-01), Takeda et al.
patent: 5076499 (1991-12-01), Cranford
patent: 5127585 (1992-07-01), Mesenich
patent: 5167213 (1992-12-01), Bassler et al.
patent: 5190221 (1993-03-01), Reiter
patent: 5211341 (1993-05-01), Wieczorek
patent: 5236174 (1993-08-01), Vogt et al.
patent: 5263648 (1993-11-01), Vogt et al.
patent: 5275341 (1994-01-01), Romann et al.
patent: 5340032 (1994-08-01), Stegmaier et al.
patent: 5462231 (1995-10-01), Hall
patent: 5494225 (1996-02-01), Nally et al.
patent: 5520151 (1996-05-01), Gras et al.
patent: 5544816 (1996-08-01), Nally et al.
patent: 5566920 (1996-10-01), Romann et al.
patent: 5580001 (1996-12-01), Romann et al.
patent: 5692723 (1997-12-01), Baxter et al.
patent: 5718387 (1998-02-01), Awarzamani et al.
patent: 5732888 (1998-03-01), Maier et al.
patent: 5755386 (1998-05-01), Lavan et al.
patent: 5769391 (1998-06-01), Noller et al.
patent: 5769965 (1998-06-01), Liedtke et al.
patent: 5775355 (1998-07-01), Maier et al.
patent: 5775600 (1998-07-01), Wildeson et al.
patent: 5875975 (1999-03-01), Reiter et al.
patent: 5901688 (1999-05-01), Balsdon et al.
patent: 5915626 (1999-06-01), Awarzamani et al.
patent: 5927613 (1999-07-01), Koyanagi et al.
patent: 5937887 (1999-08-01), Baxter et al.
patent: 5944262 (1999-08-01), Akutagawa et al.
patent: 5975436 (1999-11-01), Reiter et al.
patent: 5979411 (1999-11-01), Ricco
patent: 5979866 (1999-11-01), Baxter et al.
patent: 5996227 (1999-12-01), Reiter et al.
patent: 5996910 (1999-12-01), Takeda et al.
patent: 5996911 (1999-12-01), Gesk et al.
patent: 6003790 (1999-12-01), Fly
patent: 6012655 (2000-01-01), Maier et al.
patent: 6019128 (2000-02-01), Reiter
patent: 6024293 (2000-02-01), Hall
patent: 6027049 (2000-02-01), Stier
patent: 6039271 (2000-03-01), Reiter
patent: 6039272 (2000-03-01), Ren et al.
patent: 6045116 (2000-04-01), Willke et al.
patent: 6047907 (2000-04-01), Hornby
patent: 6076802 (2000-06-01), Maier
patent: 6079642 (2000-06-01), Maier
patent: 6089467 (2000-07-01), Fochtman et al.
patent: 6089475 (2000-07-01), Reiter et al.
patent: 6186472 (2001-02-01), Reiter
patent: 6201461 (2001-03-01), Eichend
Dallmeyer Michael P.
McFarland Robert
Hwu Davis
Mar Michael
Seimens Automotive Corporation
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