Patent ID: 7779818
Filing Date: 2010-08-24
Classification: F02M,F16K

Abstract:
1. A bleed valve fluidly connected to a fuel line for automatically bleeding air or vapor from the fuel line, the bleed valve comprising: a cylindrical valve body, comprising: a cylindrical plunger slideably positioned in the chamber, the plunger comprising: a biasing spring disposed in the chamber, proximate to the second end of the valve body, the biasing spring configured to bias the plunger toward the first end of the valve body; wherein the plunger is movable in the chamber between first, second, and third positions, the plunger is in the first position when the passageway of the plunger is positioned axially below the outlet of the valve body, the plunger is in the second position when the outlet of the valve body and the passageway of the plunger are in fluid communication, the plunger is in the third position when the passageway of the plunger is positioned axially above the outlet of the valve body and the plunger blocks flow through the outlet of the valve body; and wherein the plunger is in the first position when the fuel pressure in the fuel line is in a first pressure range, the plunger is in the second position when the fuel pressure in the fuel line is in a second pressure range greater than the first pressure range, and the plunger is in the third position when the fuel pressure in the fuel line is at any pressure greater than the second pressure range.