Valves and valve actuation – With material guide or restrictor – Baffle or zigzag flow restrictor
Reexamination Certificate
2008-01-09
2010-10-19
Fristoe, Jr., John K (Department: 3753)
Valves and valve actuation
With material guide or restrictor
Baffle or zigzag flow restrictor
C251S129010, C251S129150
Reexamination Certificate
active
07815165
ABSTRACT:
A present invention is advantageously applied to a purge valve for purging evaporated fuel stored in a canister to an intake pipe of an engine. The purge valve has a fluid passage connecting an inlet port and an outlet port, and a normally closed valve port that is selectively opened by operation of an electromagnetic actuator is disposed in the fluid passage. A barrier pillar is disposed in the fluid passage between the inlet port and the valve port to suppress transmission of pulsating waves generated in the purge valve to the canister. Flow resistance of the barrier pillar is higher in a reverse flow direction from the valve port to the inlet port than in a normal flow direction from the inlet port to the valve port. The transmission of the pulsating waves is well suppressed by the barrier pillar while allowing a smooth flow from the canister into the purge valve.
REFERENCES:
patent: 4651971 (1987-03-01), Donahue, Jr.
patent: 5630403 (1997-05-01), Van Kampen et al.
patent: 5970963 (1999-10-01), Nakase et al.
patent: 2006/0243939 (2006-11-01), Seko
patent: 03-022186 (1991-03-01), None
patent: 08-100862 (1996-04-01), None
patent: 2001-98959 (2001-04-01), None
patent: 2001-295960 (2001-10-01), None
patent: 2001-324045 (2001-11-01), None
Japanese Office Action dated Jan. 13, 2009, issued in corresponding Japanese Application No. 2007-138104, with English translation.
Denso Corporation
Fristoe, Jr. John K
Nixon & Vanderhye PC
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