Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1994-05-20
1996-05-14
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Fuel injection system
4172221, F02M 4702, F04B 134
Patent
active
055158293
ABSTRACT:
A pressure control system for controlling output pressure of a variable-displacement hydraulic pump used with a hydraulically-actuated electronically-controlled injector fuel system and method of operation is disclosed. The control system comprises a variable-displacement hydraulic pump with a control element adjustable to a range of positions which controls an output of the pump. The control system additionally includes positioning means for positioning the control element responsive to pressure differences between the fluid reference chamber and the output port. Electronic valve means regulates a pressure of hydraulic actuating fluid in the fluid reference chamber. The electronic valve means is electronically connected with the electronic control means to receive the output signal. A change in the output signal to the electrical valve means produces a change in the pressure of the hydraulic actuating fluid in the fluid reference chamber, thereby causing the positioning means to operably position the control element to change the output of the pump.
REFERENCES:
patent: Re33270 (1990-07-01), Beck et al.
patent: 3654758 (1972-04-01), Aoyama et al.
patent: 3853272 (1974-12-01), Decker et al.
patent: 4468173 (1984-08-01), Dantlegraber
patent: 4518319 (1985-05-01), Ring
patent: 4606313 (1986-08-01), Izumi et al.
patent: 4637781 (1987-01-01), Akiyama et al.
patent: 4663713 (1987-05-01), Cornell et al.
patent: 4679988 (1987-07-01), Leorat et al.
patent: 4700895 (1987-10-01), Takata
patent: 4773369 (1988-09-01), Kobayashi et al.
patent: 4799646 (1989-01-01), Kramer et al.
patent: 4823552 (1989-04-01), Ezell et al.
patent: 4873817 (1989-10-01), Harms
patent: 4934143 (1990-06-01), Ezell et al.
patent: 5032060 (1991-07-01), Kobayashi et al.
patent: 5073091 (1991-12-01), Burgess et al.
patent: 5135362 (1992-08-01), Martin
patent: 5191867 (1993-03-01), Glassey
patent: 5197860 (1993-03-01), Nishida et al.
patent: 5213083 (1993-05-01), Glassey
patent: 5295796 (1994-03-01), Goto et al.
patent: 5297941 (1994-03-01), Park
patent: 5320499 (1994-06-01), Hamey et al.
New Electrohydraulic Proportional Pressure Relief Valve Cartridge, 1993 Mobile Hydraulic Supplement (p. 24), and cover to Diesel Progress Engines & Drives Conexpo '93 Special Issue, Mar. 1993.
Desai Chetan J.
Flinn Michael A.
Shafer Scott F.
Wear Jerry A.
Caterpillar Inc.
Hinman Kevin M.
Moulis Thomas N.
LandOfFree
Variable-displacement actuating fluid pump for a HEUI fuel syste does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Variable-displacement actuating fluid pump for a HEUI fuel syste, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable-displacement actuating fluid pump for a HEUI fuel syste will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1890161