Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1995-11-28
1997-04-15
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Fuel injection system
123496, 123468, F02M 700, F02M 3704
Patent
active
056199694
ABSTRACT:
A fuel injection rate shaping control system is provided which effectively controls the flow rate of fuel injected into the combustion chamber of an engine to improve combustion and reduce emissions by controlling the rate of pressure increase during injection. The injection rate shaping control system includes a rate shaping control device including a rate shaping transfer passage having a predetermined length and diameter specifically designed to create a desired injection pressure rate shape. In other embodiments of the present invention, two or more rate shaping transfer passages capable of producing distinct rate shapes are packaged in various fuel injection systems to selectively provide various rate shapes depending on operating conditions. Switching valves, i.e., solenoid operated three-way valves, may be used to direct the fuel or timing fluid flow to any one of the rate shaping transfer passages. Also, a dampening means in the form of a reverse flow restrictor valve is positioned in the rate shaping transfer passage to dampen reflected pressure waves thereby minimizing the adverse effects thereof.
REFERENCES:
patent: 3669360 (1972-06-01), Knight
patent: 3718283 (1973-02-01), Fenne
patent: 3747857 (1973-07-01), Fenne
patent: 3817456 (1974-06-01), Schlappkohl
patent: 3961612 (1976-06-01), Okamoto et al.
patent: 4250857 (1981-02-01), Taplin
patent: 4258883 (1981-03-01), Hofmann et al.
patent: 4526151 (1985-07-01), Tateishi et al.
patent: 4711209 (1987-12-01), Henkel
patent: 4718384 (1988-01-01), Takahashi
patent: 4811715 (1989-03-01), Djordjevic et al.
patent: 4838232 (1989-06-01), Wich
patent: 4889288 (1989-12-01), Gaskell
patent: 4993926 (1991-02-01), Cavanagh
patent: 5020500 (1991-06-01), Kelly
patent: 5029568 (1991-07-01), Perr
patent: 5054445 (1991-10-01), Henkel et al.
patent: 5056488 (1991-10-01), Eckert
patent: 5297523 (1994-03-01), Hafner et al.
patent: 5441027 (1995-08-01), Buchanon et al.
patent: 5526792 (1996-06-01), Guth et al.
Ashwill Dennis
Case Donald N.
Cavanagh Mark
Durrett Russ P.
Lane John
Brackett Jr. Tim L.
Cummins Engine Company, Inc.
Leedom Jr. Charles M.
Moulis Thomas N.
LandOfFree
Fuel injection rate shaping control system 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 control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel injection rate shaping control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-354103