Internal-combustion engines – Charge forming device – With fuel pump
Reexamination Certificate
2007-04-03
2007-04-03
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Charge forming device
With fuel pump
C123S514000
Reexamination Certificate
active
11128696
ABSTRACT:
A method and system for the direct injection of fuel into an internal combustion engine, according to which a high-pressure pump with a variable flow rate supplies the fuel to a common rail, which in turn supplies the fuel to a series of injectors; the flow rate of the high-pressure pump is controlled by choking each pump stroke by varying the closure time of an intake valve of said high-pressure pump; for each pump stroke of the high-pressure pump, at least one intermediate gap is generated in said pump stroke during which the pumping pressure is substantially reduced to zero so as to subdivide symmetrically the choking of the pump stroke into a first choking action at the beginning of the pump stroke and a second choking action immediately after the intermediate gap.
REFERENCES:
patent: 4184816 (1980-01-01), Rapp et al.
patent: 4459963 (1984-07-01), Gross et al.
patent: 4474158 (1984-10-01), Mowbray
patent: 4489698 (1984-12-01), Hofer et al.
patent: 4502445 (1985-03-01), Roca-Nierga et al.
patent: 5025768 (1991-06-01), Eckert
patent: 5529042 (1996-06-01), Augustin et al.
patent: 5749717 (1998-05-01), Straub et al.
patent: 6095118 (2000-08-01), Klinger et al.
patent: 6116870 (2000-09-01), Kraemer
patent: 6152708 (2000-11-01), Ruessler et al.
patent: 6343588 (2002-02-01), Onishi et al.
patent: 6345608 (2002-02-01), Rembold et al.
patent: 6701898 (2004-03-01), Tokuo et al.
patent: 6886536 (2005-05-01), Ranaldo et al.
patent: 7063073 (2006-06-01), Ausiello et al.
patent: 2004/0000289 (2004-01-01), Seo et al.
patent: 0 481 964 (1992-04-01), None
patent: 0 501 459 (1992-09-01), None
patent: 0 962 650 (1999-12-01), None
patent: 0 971 123 (2000-01-01), None
patent: 1 130 250 (2001-09-01), None
patent: 1 241 338 (2002-09-01), None
European Search Report (EPC No. 05104156.4) dated Jul. 25, 2005.
Ausiello Francesco
Serra Gabriele
Gimie Mahmoud
Klarquist & Sparkman, LLP
Magneti Marelli Powertrain SpA
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