Jason T Krajewski

US Patent:

8230678, Jul 31, 2012

Filed:

Jun 16, 2008

Appl. No.:

12/214271

Inventors:

Rakesh Aneja - Farmington Hills MI, US
Jeffrey M. Girbach - Farmington MI, US
Jeffrey A. Begeman - Newport MI, US
Matthew Oaks - Taylor MI, US
Jason T. Krajewski - Portland OR, US
Andrew S. McLandress - Portland OR, US
Napolyon Isikbay - Hillsboro OR, US

Assignee:

Daimler Trucks North America LLC - Portland OR

International Classification:

F01N 3/00

US Classification:

60295, 60301

Abstract:

A diesel exhaust treatment system for treating exhaust gas from a diesel engine comprises at least one diesel particulate filter, at least one diesel exhaust fluid mixing chamber and at least one selective catalytic reduction converter (SCR). In one desirable embodiment, plural diesel particulate filters are arranged in parallel and plural SCRs are arranged in parallel. These components including the diesel exhaust fluid mixing chamber can be included in a common housing with the exhaust flow reversing directions a plurality of times as it passes through the treatment system from an exhaust inlet to an exhaust outlet. The housing can be coupled to one vehicle frame rail with most of the housing and components contained therein positioned outside the outer surface of the one frame rail.

US Patent:

20070039318, Feb 22, 2007

Filed:

May 26, 2006

Appl. No.:

11/442365

Inventors:

Jason Krajewski - Portland OR, US
Bhaskar Bhatnagar - Hillsboro OR, US

International Classification:

F01N 3/02

US Classification:

060317000

Abstract:

In one exemplary embodiment, an exhaust dilution and dispersion device for a vehicle can include a generally elongate tailpipe comprising an inlet section capable of being in exhaust receiving communication with an exhaust system of a vehicle. The tailpipe further comprises an outlet section in exhaust receiving communication with the inlet section. The outlet section can also comprise a downwardly directed exhaust deflection portion and an exhaust outlet in exhaust dispersing communication with the surroundings external to the device. The exhaust outlet can comprise a generally elongate exhaust dispersion opening extending in a lengthwise direction along the tailpipe. At least a portion of the exhaust outlet can be coextensive with the downwardly directed exhaust deflecting portion and a major portion of the exhaust dispersed from the outlet can have a transverse component.

US Patent:

20120017566, Jan 26, 2012

Filed:

Jul 21, 2011

Appl. No.:

13/188411

Inventors:

Jason T. Krajewski - Portland OR, US
Bhaskar Keshav Bhatnagar - Hillsboro OR, US

International Classification:

F01N 13/08

US Classification:

60273, 60324

Abstract:

In one exemplary embodiment, an exhaust dilution and dispersion device for a vehicle can include a generally elongate tailpipe comprising an inlet section capable of being in exhaust receiving communication with an exhaust system of a vehicle. The tailpipe further comprises an outlet section in exhaust receiving communication with the inlet section. The outlet section can also comprise a downwardly directed exhaust deflection portion and an exhaust outlet in exhaust dispersing communication with the surroundings external to the device. The exhaust outlet can comprise a generally elongate exhaust dispersion opening extending in a lengthwise direction along the tailpipe. At least a portion of the exhaust outlet can be coextensive with the downwardly directed exhaust deflecting portion and a major portion of the exhaust dispersed from the outlet can have a transverse component.

US Patent:

20120260635, Oct 18, 2012

Filed:

Jun 29, 2012

Appl. No.:

13/539012

Inventors:

Rakesh Aneja - Farmington Hills MI, US
Jeffrey M. Girbach - Farmington MI, US
Jeffrey A. Begeman - Newport MI, US
Matthew Oaks - Taylor MI, US
Jason T. Krajewski - Portland OR, US
Andrew S. McLandress - Portland OR, US
Napolyon Isikbay - Hillsboro OR, US

International Classification:

F01N 3/035
F01N 13/00

US Classification:

60274, 60297, 60324

Abstract:

A diesel exhaust treatment system for treating exhaust gas from a diesel engine comprises at least one diesel particulate filter, at least one diesel exhaust fluid mixing chamber and at least one selective catalytic reduction converter (SCR). In one desirable embodiment, plural diesel particulate filters are arranged in parallel and plural SCRs are arranged in parallel. These components including the diesel exhaust fluid mixing chamber can be included in a common housing with the exhaust flow reversing directions a plurality of times as it passes through the treatment system from an exhaust inlet to an exhaust outlet. The housing can be coupled to one vehicle frame rail with most of the housing and components contained therein positioned outside the outer surface of the one frame rail.