Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...
Patent
1995-11-30
1996-12-03
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Fuel flow regulation between the pump and the charge-forming...
25112905, 25112915, 137242, F02M 3704, F16K 3102
Patent
active
055797415
ABSTRACT:
A purge valve has a novel seal element on the head end of a reciprocating valve member that features a frustoconical projection for improved noise attenuation and sealing against a flat annular surface of a valve seat. As the projection comes to closed position against the seat surface, it flexes slightly so that the sealing diameter of its rounded free end contracts, to wipe the seat surface. In one embodiment, the seal element is provided with another projection that absorbs impact upon the valve member coming to maximum open position. In another embodiment, an elastomeric damper element is provided on an end of a pole piece of a solenoid assembly to absorb impact of the valve member as it comes to its maximum open position.
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Cook John E.
Hueniken Peter
Perry Paul
Moulis Thomas N.
Siemens Electric Limited
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