Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...
Reexamination Certificate
2006-03-14
2006-03-14
Moulis, Thomas (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel flow regulation between the pump and the charge-forming...
C123S520000, C251S065000, C251S129090
Reexamination Certificate
active
07011076
ABSTRACT:
A solenoid for use in valves used in evaporative emission control systems, such as canister purge valves or vent solenoid valves. The solenoid includes a housing having an inlet port and an outlet port. The housing further includes a guide element having a bobbin section. A valve shaft is slidably mounted to the guide element, wherein the valve shaft includes a permanent magnet and a valve element. The valve element is movable between a closed position wherein the inlet port is closed and an open position wherein the inlet port is opened. A coil is formed on the bobbin adjacent the magnet. In use, the coil generates directional magnetic fields oriented to cause the magnet to be repelled to move the valve element to the open position and oriented to cause a magnetic attraction with the magnet to move the valve element to the closed position.
REFERENCES:
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U.S. Appl. No. Appl. 10/253,222, filed Sep. 24, 2002, Entitled “Unipolar Canister Purge Valve.”
Everingham Gary
Weldon Craig Andrew
Moulis Thomas
Musacchio Pasquale
Siemens VDO Automotive Inc.
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