Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1996-04-17
1997-10-21
Miller, Carl S.
Internal-combustion engines
Charge forming device
Fuel injection system
123446, 123501, F02M 700
Patent
active
056785216
ABSTRACT:
An electronic digital control system monitors and controls the operation of an engine fueling system. Signals activating injection for a plurality of cylinders are transmitted through a single line to a driving circuit for a single injector solenoid valve, while signals controlling accumulator fuel pumps are transmitted to pumping control solenoids. Injection signals are controlled to vary fuel delivery rate during an injection event. A back EMF sensing circuit measures valve opening delay and the control system compensates for valve delay. Variable cylinder-specific delays in the injection solenoid output signal pulses are programmed to compensate for a varying fuel line length to each injector nozzle. At startup, the control system pulses the pumping control solenoids to begin pressurizing the accumulator before engine angular position sensors provide an accurate indication of engine angular position to allow precise timed control of the pump. Pressure variations in the high pressure accumulator are monitored by the control system in conjunction with injection events, and pump equipment failures or weaknesses are detected based on the pressure variations. In alternative embodiments of the invention, a pre-biasing current using battery voltage is provided to the injection control valve prior to the desired time of an injection event, and the current is increased at the desired time of opening. An input allows signaling the control system when a load is to be applied to cause an immediate change in fueling levels, to prepare for load increases in electrical generation and other non-motive-power applications.
REFERENCES:
patent: Re33270 (1990-07-01), Beck et al.
patent: 2274224 (1942-02-01), Vickers
patent: 2867198 (1959-01-01), Peras
patent: 2914053 (1959-11-01), Hittell
patent: 3598507 (1971-08-01), Voit et al.
patent: 3718283 (1973-02-01), Fenne
patent: 3747857 (1973-07-01), Fenne
patent: 3759637 (1973-09-01), Vuaille
patent: 4236877 (1980-12-01), Curtis
patent: 4331119 (1982-05-01), Chadwick
patent: 4357925 (1982-11-01), Woodruff
patent: 4440134 (1984-04-01), Nakao et al.
patent: 4469068 (1984-09-01), Kuroyanagi et al.
patent: 4498442 (1985-02-01), Tissot
patent: 4502445 (1985-03-01), Roca-Nierga et al.
patent: 4541394 (1985-09-01), Schechter et al.
patent: 4586480 (1986-05-01), Kobayashi et al.
patent: 4624231 (1986-11-01), Fenne
patent: 4633837 (1987-01-01), Babitzka et al.
patent: 4681513 (1987-07-01), Saito et al.
patent: 4712528 (1987-12-01), Schaffitz
patent: 4777921 (1988-10-01), Miyaki et al.
patent: 4788960 (1988-12-01), Oshizawa
patent: 4811715 (1989-03-01), Djordjevic et al.
patent: 4838232 (1989-06-01), Wich
patent: 4884549 (1989-12-01), Kelly
patent: 4940037 (1990-07-01), Eckert
patent: 5029568 (1991-07-01), Perr
patent: 5042445 (1991-08-01), Peters et al.
patent: 5044345 (1991-09-01), Collingborn
patent: 5058553 (1991-10-01), Kondo et al.
patent: 5070832 (1991-12-01), Hapka et al.
patent: 5078113 (1992-01-01), Haag et al.
patent: 5094216 (1992-03-01), Miyaki et al.
patent: 5109822 (1992-05-01), Martin
patent: 5133645 (1992-07-01), Crowley et al.
patent: 5137000 (1992-08-01), Stepper et al.
patent: 5176122 (1993-01-01), Ito
patent: 5197438 (1993-03-01), Yamamoto
patent: 5199402 (1993-04-01), Melchior
patent: 5201294 (1993-04-01), Osuka
patent: 5203303 (1993-04-01), Collingborn et al.
patent: 5230613 (1993-07-01), Hilsbos et al.
patent: 5277156 (1994-01-01), Osuka et al.
patent: 5363824 (1994-11-01), Bonse
patent: 5364240 (1994-11-01), Salecker
SAE article No. 910252 entitled Development of New Electronically Controlled Fuel Injection Systems ECD-U2 for Diesel Engines by Miyaki, et al.
"Development Of High Speed Solenoid Valve-Investigation Of The Energizing Circuits", By Kajima, T.; Nakamura Y.; Sonoda, K; Proceedings Of The 1992 International Conference On Industrial Electronics, Control, Instrumentation, And Automation Power Electronics And Motion Control, pp. 564-569, vol. 1, Nov. 1992.
Daiker Jeffrey
Delano W. Beale
Fridholm Greg
Meyer William
Sang Zhong
Cummins Engine Company, Inc.
Leedom Jr. Charles M.
Miller Carl S.
Smith Evan R.
LandOfFree
System and methods for electronic control of an accumulator fuel does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and methods for electronic control of an accumulator fuel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and methods for electronic control of an accumulator fuel will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-998857