Internal-combustion engines – Charge forming device – With fuel pump
Reexamination Certificate
2007-09-04
2007-09-04
Miller, Carl S. (Department: 3747)
Internal-combustion engines
Charge forming device
With fuel pump
C123S446000
Reexamination Certificate
active
11114091
ABSTRACT:
The high-pressure pump (7) comprises a number of pumping elements (18) actuated in reciprocating motion through corresponding suction and delivery strokes. Each pumping element (18) is provided with a corresponding intake valve (25) in communication with an intake pipe (10) supplied by a low-pressure pump (9). Set on the intake pipe (10) is an on-off solenoid valve (27) having a reduced flow rate substantially of the same order of magnitude as the maximum amount of fuel that can be injected by an injector (5). The solenoid valve (27) is controlled in a chopped way in synchronism with an intermediate part (32) of the suction stroke of each pumping element (18).
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De Matthaeis Sisto Luigi
De Michele Onofrio
Ricco Mario
Ricco Raffaele
Arent & Fox LLP
C.R.F. Societa Consortile per Azioni
Miller Carl S.
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