Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1991-10-11
1993-03-09
Miller, Carl S.
Internal-combustion engines
Charge forming device
Fuel injection system
123447, 123456, 123501, F02M 4702
Patent
active
051918676
ABSTRACT:
A hydraulically-actuated electronically-controlled unit injector fuel system and method of operation is disclosed. The fuel system comprises at least one hydraulically-actuated electronically-controlled unit injector and apparatus for supplying hydraulically actuating fluid to the inejctor. The fuel system also includes apparatus for detecting the pressure of the hydraulically actuating fluid supplied to the injector and for generating a presure indicative signal indicative of the pressure detected. The fuel system further includes apparatus for controlling the pressure of the hydraulically actuating fluid supplied to the injector and for correcting the pressure amount based on the pressure indicative signal. The present invention provides closed-loop control of actuating fluid pressure which helps ensure that a desired variable pressure setting is achieved and maintained for as long as needed. Accurate control of the actuating fluid pressure helps ensure accurate control of fuel injection timing and quantity.
REFERENCES:
patent: Re33270 (1990-07-01), Beck et al.
patent: 2793077 (1957-05-01), Bovard
patent: 3575145 (1971-04-01), Steiger
patent: 3689205 (1972-09-01), Links
patent: 3753426 (1973-08-01), Lilley
patent: 3796205 (1974-03-01), Links et al.
patent: 3835829 (1974-09-01), Links
patent: 4064855 (1977-12-01), Johnson
patent: 4217862 (1980-08-01), Fort et al.
patent: 4219154 (1980-08-01), Luscomb
patent: 4221192 (1980-09-01), Badgley
patent: 4248194 (1981-02-01), Drutchas et al.
patent: 4260333 (1981-04-01), Schillinger
patent: 4271807 (1981-06-01), Links et al.
patent: 4372272 (1983-02-01), Walter et al.
patent: 4448169 (1984-05-01), Badgley et al.
patent: 4449507 (1984-05-01), Mayer
patent: 4459959 (1984-07-01), Terada et al.
patent: 4462368 (1984-07-01), Funada
patent: 4577604 (1986-03-01), Hara et al.
patent: 4605166 (1986-08-01), Kelly
patent: 4628881 (1986-12-01), Beck et al.
patent: 4699103 (1987-10-01), Tsukahara et al.
patent: 4800859 (1989-01-01), Sagisaka et al.
patent: 4805575 (1989-02-01), de Concini et al.
patent: 4867115 (1989-09-01), Henein
patent: 4926829 (1990-05-01), Tuckey
patent: 4957085 (1990-09-01), Sverdlin
patent: 5033435 (1991-07-01), Ostarello et al.
SAE Paper No. 910252, Development of New Electronically Controlled Fuel Injection System ECD-U2 for Diesel Engines, Published 1991, by Miyaki et al.
Caterpillar Inc.
Miller Carl S.
Moulis Thomas N.
Woloch Anthony N.
LandOfFree
Hydraulically-actuated electronically-controlled unit injector f does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulically-actuated electronically-controlled unit injector f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulically-actuated electronically-controlled unit injector f will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-204928