Intake tract negative pressure relief valve for I.C. engine
AssigneeAdvanced Engine Management, Inc.
InventorJohn P. Concialdi
Life of this patent
Estimating the term…
Abstract
A pressure relief valve is disclosed for use in air intake tracts of I.C. engine installations. The air valve includes a tubular member having apertures therein covered over by resilient diaphragm elements that, when a negative pressure (vacuum) within the system exceeds a pre-determined level, deflect and enable relief of the negative pressure within the air intake. When the negative pressure returns to normal operating levels, the diaphragm returns to position. The negative pressure within the intake tract can be raised, for example, by an obstruction at the air inlet of the tract.
Claims20
A relief valve adapted for connecting along a tubular air tract between an air intake connected to said tract and a source of vacuum also connected to said tract, said relief valve comprising:
- a first tubular member having walls defining a passageway therein, said walls including at least one aperture therein covered by a resilient diaphragm, said diaphragm being responsive to negative pressure within said tubular member to relieve negative pressure within said tubular member at a predetermined threshold, said first tubular member being adapted for anchoring along an exterior surface of said tract in sealing engagement thereto.
A negative pressure intake tract of a vacuum source for conducting fluid flow there through, said intake tract comprising:
- a tubular passageway defining an intake tract having a first and second end and at least one portal in a wall thereof located between said first and second ends, a pressure relief valve structure surrounding an outer surface of said tubular passageway and aligned so as to cover over said portal, said relief valve structure including at least one aperture therein, said aperture being covered, and fluid flow through said aperture being regulated by a resilient diaphragm member responsive to negative pressure within said intake tract wherein when said negative pressure exceeds a predetermined threshold, said resilient diaphragm enables fluid flow through said aperture and portal thereby relieving said negative pressure within said intake tract.
A pressure relief valve in combination with an intake tract of an internal combustion engine, said combination comprising:
- an air induction tube having a first end in communication with an external environment and extending to a second end in communication with a throttle body of said internal combustion engine;
- and
- a pressure relief valve connected to said air induction tube disposed between said first and second ends of said air induction tube, wherein when a pressure differential between said external environment and within said air induction tube reaches a predetermined threshold, said pressure relief valve opens establishing a path to said external environment thereby providing a supplemental source of air to said throttle body.
Dependencies are inferred from the claim text.