Intake manifold having an elastically expandable membrane
AssigneeFirma Carl Freudenberg
InventorsMichael Brummer, Detlef Cordts, Bernhard Gesenhues
Life of this patent
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Abstract
An intake manifold for an internal combustion engine is disclosed. The intake manifold has an intake manifold body of fixed cross-section with a passage passing through it. The passage area can be altered by an expansible member arranged in the passage. The expansible member is an elastically expandable membrane, as well as a supply pipe used to expand the membrane, as needed, by use of a fluid medium.
Claims7
An intake manifold for an internal combustion engine comprising:
- an intake manifold body of a fixed cross-section, a fuel flow passage through said body, and means for altering the cross-sectional area of said passage, the means for altering comprising an elastically expandable expansion member and a supply pipe for providing a fluid medium to the exterior of said expansion member to expand and contract said expansion member, wherein the expansion member has an annular shape and concentrically surrounds the passage.
An intake manifold for an internal combustion engine comprising:
- an intake manifold body of a fixed cross-section, a fuel flow passage through said body, and means for altering the cross-sectional area of said passage, the means for altering comprising an elastically expandable expansion member and a supply pipe for providing a fluid medium to the exterior of said expansion member to expand and contract said expansion member, wherein the expansion member is only elastically deformable in a subsection surrounding the passage.
An intake manifold for an internal combustion engine comprising:
- an intake manifold body of a fixed cross-section, a fuel flow passage through said body, and means for altering the cross-sectional area of said passage, the means for altering comprising an elastically expandable expansion member and a supply pipe for providing a fluid medium to the exterior of said expansion member to expand and contract said expansion member, wherein the expansion member completely seals off the passage without pressurization by said fluid medium.
Dependencies are inferred from the claim text.