Internal-combustion engines – Charge forming device – With fuel pump
Patent
1995-04-13
1996-10-22
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
With fuel pump
123299, 123500, 239 88, F02M 3704, F02M 4702, F02B 300
Patent
active
055666604
ABSTRACT:
A multipiece fuel pump plunger assembly for controlling the fuel injection rate and delivery during the initial injection portion of a fuel injection cycle for an internal combustion engine. The injector includes a two piece plunger assembly including a plunger and a plunger sleeve. The plunger having a small predetermined diameter and being slidably positioned within a plunger sleeve having a diameter greater than the diameter of the plunger. The multipiece plunger is advantageous because it allows for shaping of the rate of fuel injected into the combustion process thereby reducing the excess fuel flow in the early portion of the injection cycle. Elimination of the excess fuel flow results in lower oxides of nitrogen and particulate exhaust emission levels and less engine noise.
REFERENCES:
patent: 2147390 (1939-02-01), Vaudet
patent: 2282562 (1942-05-01), Cole
patent: 2892687 (1957-05-01), Snell
patent: 3209737 (1965-10-01), Omotehara et al.
patent: 3269275 (1966-08-01), Waite
patent: 3269462 (1966-08-01), Voetter
patent: 3689205 (1972-09-01), Links
patent: 4054248 (1977-10-01), Beardmore
patent: 4146178 (1979-03-01), Bailey
patent: 4281792 (1981-08-01), Sisson et al.
patent: 4327694 (1982-05-01), Henson et al.
patent: 4392612 (1983-07-01), Deckard et al.
patent: 4437443 (1984-03-01), Hofbauer
patent: 4572738 (1985-07-01), Martin
patent: 4611566 (1986-09-01), Kampichler et al.
patent: 4630587 (1986-12-01), Hofer et al.
patent: 4811899 (1989-03-01), Egler
patent: 4907559 (1990-03-01), Rathmayr
patent: 5033442 (1991-07-01), Perr et al.
patent: 5094397 (1992-03-01), Peters et al.
patent: 5121730 (1992-06-01), Ausman et al.
patent: 5143291 (1992-09-01), Grinsteiner
patent: 5271371 (1993-12-01), Meints et al.
Camplin Fred A.
Flinn Michael A.
Graves Jeffrey D.
Zuo Lianghe
Becker Mark D.
Caterpillar Inc.
Moulis Thomas N.
LandOfFree
Fuel injection rate shaping apparatus for a unit fuel injector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fuel injection rate shaping apparatus for a unit fuel injector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel injection rate shaping apparatus for a unit fuel injector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2351611