Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1994-07-29
1996-07-16
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Fuel injection system
123447, 123506, F02M 3704
Patent
active
055357237
ABSTRACT:
An improved electronically-controlled fluid injector system comprises a fluid storage chamber and a direct-operated check. Pressurization of fluid in the storage chamber begins before the start of fluid injection. Fluid injection begins by hydraulically unbalancing the check. Fluid injection sharply ends by hydraulically balancing the check to allow a biasing device to close the check. A fluid, such as fuel, can be injected as a purely vapor phase to improve mixing with combustion air.
The present invention provides improved control of several fluid injection parameters, including higher peak fluid injection capability and less fluid injection pressure drop at the end of injection, resulting in improved engine performance and lower emissions, noise, and wear.
REFERENCES:
patent: 3008653 (1961-11-01), Morris et al.
patent: 3091405 (1963-05-01), Knapp et al.
patent: 3105640 (1963-10-01), Allen
patent: 4077374 (1978-03-01), Willmann et al.
patent: 4082224 (1978-04-01), Mangus
patent: 4341351 (1982-07-01), DeLuca
patent: 4392612 (1983-07-01), Deckard et al.
patent: 4394971 (1983-07-01), Gaskell
patent: 4408722 (1983-10-01), Frelund
patent: 4511082 (1985-04-01), Ballik et al.
patent: 4628881 (1986-12-01), Beck et al.
patent: 4641784 (1987-02-01), Howes
patent: 4958771 (1990-09-01), Klomp
patent: 5024385 (1991-06-01), Olson
patent: 5090625 (1992-02-01), Davis
patent: 5094215 (1992-03-01), Gustafson
patent: 5156132 (1992-10-01), Iwanaga
patent: 5235954 (1993-08-01), Sverdlin
patent: 5297523 (1994-03-01), Hafner et al.
patent: 5463996 (1995-11-01), Maiey et al.
SAE Technical Paper No. 910732, "A Method To Estimate H2 In Engine Exhaust And Factors That Affect Nox And Particulate In Diesel Engine Exhaust", by Uyehara, presented at the International Congress and Exposition, Detroit, Michigan, Feb. 15-Mar. 1, 1991.
U.S. Application No. 08/282,136 filed Jul. 28, 1994 entitled "Plunger Retention".
U.S. Application No. 08/283,232 filed Jul. 29, 1994 entitled "Check Controlled Heui With Hydraulic Energy Recovery".
U.S. Application No. 08/242,501 filed May 13, 1994 entitled "Electronically-Controlled Fluid Injector System Having Pre-Injection Pressurizable Fluid Storage Chamber and Direct-Operated Check".
U.S. Application No. 08/172,881 filed Dec. 23, 1993 entitled "Fuel Injection Nozzle Having A Force Balanced Check".
Gibson Dennis H.
Shinogle Ronald D.
Becker Mark D.
Caterpillar Inc.
Moulis Thomas N.
Woloch Anthony N.
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