Ford Global Technolgoies, LLC

Chris A Myers

Roger Joseph Khami

Scott M Rollins

Matthew Werner

David Moyer

Eric A Macke

Robert Joseph Mohan

Dhaval P Vaishnav

Syed K Ali

John Emley

Steven James Hoffman

Shawn McGrath

Vapors in the fuel tank of a vehicle are collected in a carbon canister. An ejector or aspirator is used to purge the carbon canister in a pressure-charged engine in which a positive pressure exists in the intake. A compact ejector includes a substantially planar flange and a venturi tube coupled to the flange with a central axis of the venturi tube substantially parallel to the flange. By manufacturing the ejector in two pieces, dimensions within the ejector: throat, converging section, and diverging section, is more accurate than prior art manufacturing techniques thereby providing better flow characteristics throughout the boost range.

Manufacture of a compact ejector system for a boosted internal combustion engine

Vapors in the fuel tank of a vehicle are collected in a carbon canister. An ejector or aspirator is used to purge the carbon canister in a pressure-charged engine in which a positive pressure exists in the intake. A compact ejector includes a substantially planar flange and a venturi tube coupled to the flange with a central axis of the venturi tube substantially parallel to the flange. By mounting the ejector on an intake component, having the venturi tube on the inside of the intake component, and having the venturi tube parallel to the flange yields a very compact package and protects the ejector from damage from other engine components.

Compact ejector system for a boosted internal combustion engine

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Holly, MI, United States of America

Chris A Myers