Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2007-05-01
2007-05-01
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C137S115170
Reexamination Certificate
active
11114843
ABSTRACT:
A low cost bypass pressure regulator preferably for a returnless fuel system supplying liquid fuel to a fuel injector of the combustion engine. The pressure regulator preferably has a valve head disposed at least in part in a valve chamber defined by a circumferentially continuous inner surface carried by a valve body and which transitions radially outward with respect to a center axis and in a downstream direction. The valve head preferably tapers radially inward from a downstream peripheral outer edge of the head. In a closed position, the valve head engages a seat carried by the body with the peripheral outer edge downstream of the seat and radially spaced from and fitted closely to the valve chamber continuous inner surface thus defining a close fit region therebetween. As the valve head opens, the flow cross-section enlarges which reduces or eliminates oscillation of the valve head.
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Douyama Yoshiaki
Grifka Kerry E.
Israelson Kevin L.
Roche Ronald H.
Talaski Edward J.
Gimie Mahmoud
Reising Ethington Barnes Kisselle P.C.
Walbro Engine Management , L.L.C.
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