Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1997-08-13
1998-12-08
Miller, Carl S.
Internal-combustion engines
Charge forming device
Fuel injection system
123198DB, F02M 4100
Patent
active
058456236
ABSTRACT:
A leak prevention device including an expandable chamber and control valve for preventing fuel leakage into the combustion chambers of a internal combustion engine equipped with a common rail fule injection system including open nozzle injectors and a shut off valve mounted in the common rail upstream of the fuel injectors to isolate, when closed, the fuel injectors from the source of fuel under pressure. The expandable chamber contains a variable volume held in its collapsed condition during engine operation and expanded upon engine shutdown sufficiently to prevent the flow of fuel from any injector into the corresponding combustion chamber. The control valve may be a three way valve for controlling the expansion of the variable volume of the expandable chamber The leak prevention device includes a housing assembly connected with a fuel drain and contains an outlet passage fluidically connected at one end with the variable volume and at the other end with the fuel drain and an outlet check valve for allowing fuel to flow in only one direction from the variable volume into the fuel drain. A control circuit is provided to energize solenoids for operating the shut off valve and control valve.
REFERENCES:
patent: 4064855 (1977-12-01), Johnson
patent: 4092964 (1978-06-01), Hofer et al.
patent: 4280659 (1981-07-01), Gaal et al.
patent: 4361121 (1982-11-01), Clemens
patent: 4559914 (1985-12-01), Flaig
patent: 4565170 (1986-01-01), Grieshaber
patent: 4782808 (1988-11-01), Bostick et al.
patent: 5076227 (1991-12-01), Krieger
patent: 5088463 (1992-02-01), Affeldt et al.
patent: 5159911 (1992-11-01), Williams et al.
patent: 5299738 (1994-04-01), Genter et al.
patent: 5339785 (1994-08-01), Wilksch
patent: 5445323 (1995-08-01), Perr et al.
patent: 5456233 (1995-10-01), Felhofer
patent: 5537980 (1996-07-01), Yamamoto
patent: 5619970 (1997-04-01), Collingborn
Amlung Raymond J.
Blizard Norman C.
Muntean George L.
Pounder Mark
Smith Edward D.
Cummins Engine Company, Inc.
Leedom Jr. Charles M.
Miller Carl S.
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