Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2007-02-27
2007-02-27
Miller, Carl S. (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S300000, C123S456000, C417S505000
Reexamination Certificate
active
11110300
ABSTRACT:
The injection system (1) includes a pump (7) for supplying high-pressure fuel to a storage volume, defined for example by a common rail (6), for supplying a number of injectors (5). The pump (7) has at least one reciprocating pumping member (18) with a sinusoidal compression stroke (24). The injection system (1) includes at least one bypass solenoid valve (14) controlled by a control unit (16) having a chopper unit (28) for producing multiple deliveries (29, 31) at each compression stroke (24), so that the pressure in the common rail (6) is substantially level. Each pumping member (18) may be associated with a corresponding bypass solenoid valve (14).
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European Search Report for EP 04 42 5478 (Jan. 11, 2005).
De Matthaeis Sisto Luigi
Ricco Mario
Ricco Raffaele
Satriano Annunziata Anna
C.R.F. Società Consortile per Azioni
Howrey LLP
Miller Carl S.
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