Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1998-03-02
2000-06-20
Miller, Carl S.
Internal-combustion engines
Charge forming device
Fuel injection system
123479, 123198D, F02M 700
Patent
active
060765046
ABSTRACT:
A fuel system includes a pair of electronically controllable high pressure fuel pumps operable to supply high pressure fuel from a lower pressure fuel source to a high pressure fuel collection chamber having a pressure sensor associated therewith. The fuel collection chamber feeds an electronically controllable valve operable to dispense the high pressure fuel to a fuel distribution unit supplying fuel to a number of fuel injectors. A control computer is provided for controlling the high pressure fuel pump and valve in response to requested fueling, engine speed and fuel pressure provided by the pressure sensor. The accumulator pressure profile is processed in accordance with various techniques forming part of the present invention for diagnosing pressure sensor in-range failures, fuel pump injector valve blow shut failures and failure of one of the fuel pumps. In accordance with another aspect of the present invention, the current fuel pump command signal is compared with a predicted fuel pump command stored in said computer for diagnosing overpumping conditions. The predicted fuel pump command is preferably retrieved from a look up table as a function of engine speed, commanded fuel, and accumulator pressure.
REFERENCES:
patent: 4499876 (1985-02-01), Yamamoto
patent: 4653454 (1987-03-01), Konishi et al.
patent: 4730586 (1988-03-01), Yamaguchi et al.
patent: 4840060 (1989-06-01), Notz et al.
patent: 4899713 (1990-02-01), Nakamura
patent: 5176120 (1993-01-01), Takahashi
patent: 5191867 (1993-03-01), Glassey
patent: 5235954 (1993-08-01), Sverdlin
patent: 5311850 (1994-05-01), Martin
patent: 5313924 (1994-05-01), Regueiro
patent: 5408970 (1995-04-01), Burkhard et al.
patent: 5417194 (1995-05-01), Augustin
patent: 5445019 (1995-08-01), Glidewell et al.
patent: 5471959 (1995-12-01), Sturman
patent: 5477833 (1995-12-01), Leighton
patent: 5484820 (1996-01-01), Iwaszkiewicz
patent: 5492099 (1996-02-01), Maddock
patent: 5493902 (1996-02-01), Glidewell et al.
patent: 5499538 (1996-03-01), Glidewell
patent: 5558067 (1996-09-01), Blizard et al.
patent: 5586538 (1996-12-01), Barnes
patent: 5615656 (1997-04-01), Mathis
patent: 5633458 (1997-05-01), Pauli et al.
patent: 5634448 (1997-06-01), Shinogle et al.
patent: 5642716 (1997-07-01), Ricco
patent: 5663881 (1997-09-01), Cook, Jr.
patent: 5678521 (1997-10-01), Thompson et al.
patent: 5681991 (1997-10-01), Hatfield et al.
patent: 5686268 (1997-11-01), Wakemen
patent: 5697343 (1997-12-01), Isozumi et al.
patent: 5893352 (1999-04-01), Fujiwara
patent: 5918578 (1999-07-01), Oda
Raghunathan Shyamala
Stavnheim Jonathan A.
West Stephen
Cummins Engine Company, Inc.
Miller Carl S.
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