Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Patent
1994-12-28
1997-08-26
Walton, George L.
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
123467, 2395851, F16K 3102, F02M 4702, F02M 5100
Patent
active
056603681
ABSTRACT:
A metering valve has a valve body with a control chamber, a pressurized f supply conduit and a fuel drain conduit. A control rod of a shutter includes an element for hydraulically affecting the fuel supply conduit and the fuel drain conduit so that fuel drainage is considerably reduced. The control rod slides in a first cylindrical portion of the control chamber. A second portion of the control chamber that is coaxial with the first portion forms an annular shoulder against which the element is arrested. The fuel supply conduit is located radially of the first portion, and the fuel drain conduit is located axially of the second portion of the control chamber.
REFERENCES:
patent: 3913357 (1975-10-01), Ziesche et al.
patent: 4946106 (1990-08-01), Turchi et al.
patent: 5011082 (1991-04-01), Ausiello et al.
patent: 5067658 (1991-11-01), De Matthaeis et al.
patent: 5125575 (1992-06-01), Iwanaga
patent: 5219122 (1993-06-01), Iwanaga
patent: 5244150 (1993-09-01), Ricco et al.
patent: 5246165 (1993-09-01), De Matthaeis et al.
patent: 5395048 (1995-03-01), Ricco et al.
patent: 5472142 (1995-12-01), Iwanaga
De Matthaeis Sisto
Ricco Mario
Elasis Sistema Ricerca Fiat Nel Mezzogiorno Societa Consortile p
Walton George L.
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