Internal-combustion engines – Charge forming device – With fuel pump
Reexamination Certificate
2008-10-23
2010-11-09
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Charge forming device
With fuel pump
C123S503000
Reexamination Certificate
active
07827967
ABSTRACT:
An engine assembly may include an engine structure defining a combustion chamber, a fuel injector in fluid communication with the combustion chamber, a fuel supply and a fuel pump assembly. The fuel pump assembly may include a housing, a reciprocating member, and a solenoid valve assembly. The housing may define an inlet in fluid communication with the fuel supply, an outlet in fluid communication with the fuel injector, and a bypass passage. The reciprocating member may be located within the housing to define a compression chamber in fluid communication with the inlet, the outlet, and the bypass passage. The solenoid valve assembly may include a valve member located within the bypass passage and displaceable between open and closed positions to selectively provide fluid communication between the compression chamber and the fuel supply during a compression stroke of the reciprocating member.
REFERENCES:
patent: 5529042 (1996-06-01), Augustin et al.
patent: 6135090 (2000-10-01), Kawachi et al.
patent: 6523526 (2003-02-01), Schwarz
patent: 2006/0000446 (2006-01-01), Ricco et al.
patent: 2009/0065292 (2009-03-01), Beardmore et al.
patent: 2009/0068041 (2009-03-01), Beardmore
Gimie Mahmoud
GM Global Technology Operations Inc.
Harness & Dickey & Pierce P.L.C.
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