Pumps – Processes
Reexamination Certificate
2005-02-15
2005-02-15
Freay, Charles G. (Department: 3746)
Pumps
Processes
C417S297000, C417S307000, C417S304000, C123S458000, C123S506000
Reexamination Certificate
active
06854962
ABSTRACT:
A pumping system for a fuel injection system includes a body defining a high pressure pumping chamber, a plunger, a high pressure outlet, a high pressure fluid line connecting the pumping chamber to the outlet, a control valve along the fluid line, and a valve and restriction arrangement along the fluid line. The valve and restriction arrangement includes a restriction and a valve body. The valve body is movable between an open position in which fuel flow from the pumping chamber is generally unrestricted by the restriction and a closed position in which fuel flow from the pumping chamber is significantly restricted by the restriction to store energy in the pumping chamber. Advantageously, the high pressure restriction concept may be utilized in a pumping system for various types of rate shaping, including boot injection and square injection, in addition to pilot operation and post injection operations, and others.
REFERENCES:
patent: 2019650 (1935-11-01), Bischof
patent: 2022643 (1935-11-01), Hueber et al.
patent: 2190464 (1940-02-01), Wile
patent: 2770394 (1956-11-01), Mueller
patent: 3556464 (1971-01-01), Griswold
patent: 3620648 (1971-11-01), Hofer et al.
patent: 3779225 (1973-12-01), Watson et al.
patent: 3810485 (1974-05-01), Gawlick et al.
patent: 3958902 (1976-05-01), Toyoda et al.
patent: 4161161 (1979-07-01), Bastenhof
patent: 4174693 (1979-11-01), Steinwart et al.
patent: 4214565 (1980-07-01), Knapp et al.
patent: 4269361 (1981-05-01), Seilly
patent: 4303096 (1981-12-01), Skinner
patent: 4417693 (1983-11-01), Fussner et al.
patent: 4445484 (1984-05-01), Marion
patent: 4474158 (1984-10-01), Mowbray
patent: 4475515 (1984-10-01), Mowbray
patent: 4485843 (1984-12-01), Wolff
patent: 4501244 (1985-02-01), Jarrett et al.
patent: 4501246 (1985-02-01), Leblanc
patent: 4510908 (1985-04-01), Eisele et al.
patent: 4569641 (1986-02-01), Falk et al.
patent: 4618095 (1986-10-01), Spoolstra
patent: 4619239 (1986-10-01), Wallenfang et al.
patent: 4627571 (1986-12-01), Kato et al.
patent: 4628727 (1986-12-01), Seaman et al.
patent: 4711216 (1987-12-01), Takeuchi
patent: 4730585 (1988-03-01), Abe et al.
patent: 4747545 (1988-05-01), Trachte et al.
patent: 4782807 (1988-11-01), Takahashi
patent: 4784101 (1988-11-01), Iwanaga et al.
patent: 4829967 (1989-05-01), Nuti
patent: 4889288 (1989-12-01), Gaskell
patent: 4911366 (1990-03-01), Priesner
patent: 4917065 (1990-04-01), Law et al.
patent: 4940037 (1990-07-01), Eckert
patent: 4957275 (1990-09-01), Homes
patent: 4979674 (1990-12-01), Taira et al.
patent: 4986728 (1991-01-01), Fuchs
patent: 5025768 (1991-06-01), Eckert
patent: 5062449 (1991-11-01), Woollums et al.
patent: 5076239 (1991-12-01), Mina
patent: 5118076 (1992-06-01), Homes
patent: 5125807 (1992-06-01), Kohler et al.
patent: 5241935 (1993-09-01), Beck et al.
patent: 5333588 (1994-08-01), Cananagh
patent: 5341783 (1994-08-01), Beck et al.
patent: 5345916 (1994-09-01), Amann et al.
patent: 5373828 (1994-12-01), Askew et al.
patent: 5385455 (1995-01-01), Dinsmore et al.
patent: 5423484 (1995-06-01), Zuo
patent: 5425341 (1995-06-01), Connolly et al.
patent: 5427352 (1995-06-01), Brehm
patent: 5464334 (1995-11-01), Cook et al.
patent: 5494219 (1996-02-01), Maley et al.
patent: 5517972 (1996-05-01), Stockner
patent: 5524826 (1996-06-01), Mueller et al.
patent: 5526791 (1996-06-01), Timmer et al.
patent: 5533481 (1996-07-01), Kronberger
patent: 5562428 (1996-10-01), Bailey et al.
patent: 5566660 (1996-10-01), Camplin et al.
patent: 5605289 (1997-02-01), Maley et al.
patent: 5606953 (1997-03-01), Drummer et al.
patent: 5619969 (1997-04-01), Liu et al.
patent: 5632444 (1997-05-01), Camplin et al.
patent: 5647536 (1997-07-01), Yen et al.
patent: 5651345 (1997-07-01), Miller et al.
patent: 5651501 (1997-07-01), Maley et al.
patent: 5662087 (1997-09-01), McCandless
patent: 5669356 (1997-09-01), Wall et al.
patent: 5673853 (1997-10-01), Crofts et al.
patent: 5685490 (1997-11-01), Ausman et al.
patent: 5694903 (1997-12-01), Ganser
patent: 5706778 (1998-01-01), Kapus
patent: 5709341 (1998-01-01), Graves
patent: 5711277 (1998-01-01), Fuseya
patent: 5727738 (1998-03-01), Hofmann et al.
patent: 5730104 (1998-03-01), Hafner
patent: 5730261 (1998-03-01), Spakowski et al.
patent: 5738075 (1998-04-01), Chen et al.
patent: 5749717 (1998-05-01), Straub et al.
patent: 5752659 (1998-05-01), Moncelle
patent: 5765755 (1998-06-01), Peters et al.
patent: 5769319 (1998-06-01), Yen et al.
patent: 5803370 (1998-09-01), Heinz et al.
patent: 5860597 (1999-01-01), Tarr
patent: 5868317 (1999-02-01), English
patent: 5884848 (1999-03-01), Crofts et al.
patent: 5887790 (1999-03-01), Flinn
patent: 5894992 (1999-04-01), Liu et al.
patent: 5913300 (1999-06-01), Drummond
patent: 5954487 (1999-09-01), Straub et al.
patent: 5967413 (1999-10-01), Tian
patent: 5976413 (1999-11-01), Diaz et al.
patent: 6012644 (2000-01-01), Sturman et al.
patent: 6019091 (2000-02-01), Spoolstra
patent: 6019344 (2000-02-01), Engel et al.
patent: 6053421 (2000-04-01), Chockley
patent: 6059545 (2000-05-01), Straub et al.
patent: 6085726 (2000-07-01), Lei et al.
patent: 6213093 (2001-04-01), Yudanov et al.
patent: 6450778 (2002-09-01), Spoolstra et al.
patent: 199 08 120 (2000-05-01), None
patent: 0 803 648 (1997-04-01), None
patent: 0 823 549 (1997-08-01), None
patent: WO 9701031 (1997-01-01), None
Spoolstra Gregg R.
Straub Robert D.
Freay Charles G.
McGarry Bair PC
Robert & Bosch GmbH
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