David R May

US Patent:

7987837, Aug 2, 2011

Filed:

Feb 16, 2010

Appl. No.:

12/706407

Inventors:

Jason Aaron Lupescu - Ypsilanti MI, US
Daniel Joseph Styles - Canton MI, US
James Michael Kerns - Trenton MI, US
Michael James Uhrich - West Bloomfield MI, US
Stephen B. Smith - Livonia MI, US
David A. May - Dearborn MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F02B 47/08
F02B 47/10

US Classification:

1235682, 701108

Abstract:

Systems and methods are provided for operating an engine exhaust system. In one example, a system comprises a first valve, and a second valve coupled to the first valve via a shaft. A first position of the shaft situates the first valve closed and the second valve open, a second position situates the second valve closed and the first valve open by a first amount, and a third position situates the second valve closed and the first valve open by a second, larger amount.

US Patent:

8166957, May 1, 2012

Filed:

Jun 28, 2011

Appl. No.:

13/170989

Inventors:

Jason Aaron Lupescu - Ypsilanti MI, US
Daniel Joseph Styles - Canton MI, US
James Michael Kerns - Trenton MI, US
Michael James Uhrich - West Bloomfield MI, US
Stephen B. Smith - Livonia MI, US
David A. May - Dearborn MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F02B 47/08
F02B 47/00

US Classification:

12356821, 1235682, 1235591

Abstract:

Systems and methods are provided for operating an engine exhaust system. In one example, a system comprises a first valve, and a second valve coupled to the first valve via a shaft. A first position of the shaft situates the first valve closed and the second valve open, a second position situates the second valve closed and the first valve open by a first amount, and a third position situates the second valve closed and the first valve open by a second, larger amount.

US Patent:

20130261930, Oct 3, 2013

Filed:

Apr 3, 2012

Appl. No.:

13/438740

Inventors:

Eric Kurtz - Dearborn MI, US
Paul Joseph Tennison - West Bloomfield MI, US
William Charles Ruona - Farmington Hills MI, US
Waheed Alashe - Northville MI, US
David A. May - Dearborn MI, US
Joshua Putman Styron - Canton MI, US

Assignee:

FORD GLOBAL TECHNOLOGIES, LLC - Dearborn MI

International Classification:

F02D 28/00
F02M 25/07
F01N 3/18

US Classification:

701102

Abstract:

Methods and systems for increasing fuel economy of a vehicle including a SCR catalyst are presented. In one example, an amount of EGR provided to an engine is decreased in response to performance of the SCR being within a predetermined range of performance. The methods and systems may increase vehicle fuel economy while vehicle tailpipe emissions are achieved.