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:
Dec. 20, 2011
Filed:
Nov. 06, 2008
Michael Levin, Ann Arbor, MI (US);
Jeremy Keller, LaSalle, CA;
Furqan Zafar Shaikh, Troy, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Systems and methods are provided for injecting liquid reductant into an engine exhaust. An example system includes a gas deflector positioned upstream of an injector where the gas deflector is configured to create a high pressure zone upstream of the deflector and a low pressure zone downstream of the deflector surrounding the injector outlet. A bypass flow passage diverts exhaust flow from the high pressure zone upstream of the deflector to allow the bypassed portion of exhaust to flow into the exhaust gas stream to form a gas shield for a liquid reductant spray from the injector. In this way, it is possible to reduce deposit formation and accumulation in the exhaust system.