The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 17, 2018
Filed:
May. 29, 2015
David E. Fletcher, Flint, MI (US);
Brian M. Graichen, Leonard, MI (US);
James H. Miller, Ortonville, MI (US);
Rex Bravo, Framington, MI (US);
Matthew C. Gilmer, Whitmore Lake, MI (US);
Keith Hampton, Ann Arbor, MI (US);
Andrew D. Niedert, New Hudson, MI (US);
David E. Fletcher, Flint, MI (US);
Brian M. Graichen, Leonard, MI (US);
James H. Miller, Ortonville, MI (US);
Rex Bravo, Framington, MI (US);
Matthew C. Gilmer, Whitmore Lake, MI (US);
Keith Hampton, Ann Arbor, MI (US);
Andrew D. Niedert, New Hudson, MI (US);
Dayco IP Holdings, LLC, Troy, MI (US);
Abstract
Ejector assemblies and engine systems have a pressure regulator in fluid communication with an ejector. The pressure regulator receives boost pressure and selectively allows the boost pressure to pass through a valve opening therein under selected engine conditions and into the ejector as regulated boost pressure. Both the pressure regulator and the ejector each have a conduit defining a passageway that includes a Venturi gap separating the passageway into a converging section and a first diverging section that both narrow toward the Venturi gap. The pressure regulator has a piston operatively connected to a valve mechanism positioned for movement therewith to control the passage of the boost pressure through the valve opening, and the valve mechanism defines a passage therethrough that includes a gradually narrowing portion that is narrower than the valve opening.