Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2011-02-22
2011-02-22
Cronin, Stephen K. (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S459000
Reexamination Certificate
active
07891338
ABSTRACT:
The injection system (1) includes a storage volume (6) of pressurized fuel supplied by a high-pressure pump (7) along a delivery pipe (8); and a control unit (16) for defining the required fuel pressure of the storage volume (6) as a function of the operating conditions of the engine (2). The regulating device includes a bypass solenoid valve (14); and a pair of non-return valves (32, 33) connected antiparallel and located between the bypass valve (14) and the storage volume (6). One of the non-return valves (32, 33) permits fuel drainage from the storage volume (6) to the bypass valve (14) when the control unit (16) defines a predetermined reduction (Δp) in the fuel pressure of the storage volume (6).
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De Matthaeis Sisto Luigi
Ricco Mario
Ricco Raffaele
Satriano Annunziata Anna
C.R.F. Societa Consortile per Azioni
Cronin Stephen K.
Hufty J. Page
Ladas & Parry LLP
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