Fluid sprinkling – spraying – and diffusing – Including valve means in flow line – Reciprocating
Reexamination Certificate
2007-07-10
2007-07-10
Nguyen, Dinh Q. (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Including valve means in flow line
Reciprocating
C239S585400, C239S585500, C239S900000, C239S005000, C123S478000, C123S480000
Reexamination Certificate
active
11391443
ABSTRACT:
A fuel-injection system in an internal-combustion engine is provided with an electroinjector (1) comprising an injection nozzle (5), and a needle (7) mobile along an opening stroke and a closing stroke for opening/closing the nozzle (5) under the control of an electroactuator device (8). The opening stroke of the needle (7) is controlled by a rod (14) pushed by the pressure of the fuel in a control chamber (15), in such a way as to keep the needle (7) normally in the position for closing the nozzle (5). The control chamber (15) is equipped with an inlet duct (18) having a pre-set diameter (D4) and with an outlet passage (24) having a diameter (D5) and controlled by a control valve (16). The method for controlling fuel injection comprises the steps of choosing the ratio (D5/D4) of the aforesaid diameters so as to determine a certain rate of displacement of the needle (7), and issuing to the device (8) a first electrical command (C1) and a second electrical command (C2) sufficiently close to one another to displace the needle (7) with a profile of motion (P) without any discontinuities in time.
REFERENCES:
patent: 5526791 (1996-06-01), Timmer et al.
patent: 6059204 (2000-05-01), Augustin
patent: 6543706 (2003-04-01), Hutchings et al.
patent: 196 36 088 (1998-03-01), None
patent: 198 09 001 (1998-09-01), None
patent: 100 64 790 (2001-06-01), None
patent: 100 84 656 (2003-12-01), None
patent: 0 570 986 (1993-11-01), None
patent: 0 582 993 (1994-02-01), None
patent: 1 016 783 (2000-07-01), None
patent: WO 00/63550 (2000-10-01), None
patent: WO 01/27465 (2001-04-01), None
patent: WO 03/081018 (2003-10-01), None
De Matthaeis Sisto Luigi
Gravina Antonio
Ricco Mario
Stucchi Sergio
CRF Societa Consortile Per Azioni
Nguyen Dinh Q.
Sughrue & Mion, PLLC
LandOfFree
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