Shuguang Lu

US Patent:

8596063, Dec 3, 2013

Filed:

Jun 18, 2009

Appl. No.:

12/487175

Inventors:

David B. Brown - Brighton MI, US
Shuguang Lu - Troy MI, US
Jong H. Lee - Rochester Hills MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

F02B 33/44
F01N 3/00

US Classification:

606051, 60274, 60282, 60295

Abstract:

A reductant delivery system for an exhaust treatment system of an internal combustion engine is disclosed. The system includes a turbocharger fluidly coupled to, and configured to receive exhaust gas from, the internal combustion engine. An exhaust gas driven turbine wheel is disposed for rotation in a turbine housing of the turbocharger. A reductant injection device is fluid communication with the exhaust gas driven turbine wheel, a reductant tank having a reductant stored therein and a conduit system fluidly connecting the reductant tank with the reductant injection device. Reductant is delivered to the reductant injection device for delivery of the reductant to the exhaust gas driven turbine wheel.

US Patent:

20090044515, Feb 19, 2009

Filed:

Aug 14, 2007

Appl. No.:

11/838277

Inventors:

SHUGUANG LU - Troy MI, US
ERIC RICHARD DILLEN - Edinboro PA, US
SHAWN MICHAEL GALLAGHER - Erie PA, US

International Classification:

F01N 3/023
G06F 17/00

US Classification:

60277, 60274, 700 90

Abstract:

A system is provided for removing particulate matter from a diesel particulate filter. The diesel particulate filter includes at least one diesel particulate filter unit to filter particulate matter from diesel engine exhaust gas received from a diesel engine. The system includes a sensor positioned adjacent to at least one diesel particulate filter unit, where the sensor is configured to determine the extent of particulate matter trapped within the diesel particulate filter unit. The system further includes an engine controller coupled to the sensor and the diesel engine, where the sensor is configured to output a first alert signal to the engine controller upon determining that the trapped particulate matter exceeds a predetermined threshold. The engine controller is configured to increase the temperature of the diesel exhaust gas entering the diesel particulate filter upon receiving the first alert signal.

US Patent:

20090044531, Feb 19, 2009

Filed:

Aug 14, 2007

Appl. No.:

11/838299

Inventors:

SHUGUANG LU - Troy MI, US
ROY PRIMUS - Niskayuna NY, US
WILLIAM DOUGLAS GLENN - Erie PA, US

International Classification:

F01N 3/035
F02B 33/00

US Classification:

606051, 60299, 60311

Abstract:

An aftertreatment system is provided for reducing particulate matter emission and chemical emissions in diesel engine exhaust gas. The system includes a diesel particulate filter including a plurality of diesel particulate filter units configured to engage respective cross-sectional regions of the diesel engine exhaust gas including particulate matter. Each diesel particulate filter unit includes a plurality of channels aligned in a flow direction of the diesel engine exhaust gas. The channels are selectively configured with a distinct cross-sectional area density. Additionally, each diesel particulate filter unit includes a plurality of walls separating adjacent channels of the plurality of channels, where the walls have a respective thickness. A plurality of pores are configured to vacate a distinct ratio of the area of the walls.

US Patent:

20100115930, May 13, 2010

Filed:

Nov 7, 2008

Appl. No.:

12/267003

Inventors:

DAVID B. BROWN - BRIGHTON MI, US
JONG H. LEE - ROCHESTER HILLS MI, US
SHUGUANG LU - TROY MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI

International Classification:

F01N 3/10

US Classification:

60297

Abstract:

A selective catalytic reduction system for reducing oxides of nitrogen in the exhaust gas flow of an internal combustion engine is disclosed. The system has a ceramic monolith disposed within said exhaust gas flow and includes exhaust flow passages extending therethrough. A high temperature selective catalytic reduction catalyst composition is applied to an inlet portion of the exhaust flow passages and a low temperature selective catalytic reduction catalyst composition applied to an outlet portion of the exhaust flow passages. The high and the low temperature catalytic reduction catalysts are operable to reduce oxides of nitrogen at high load and low load operation of the internal combustion engine.

US Patent:

20100300078, Dec 2, 2010

Filed:

May 27, 2009

Appl. No.:

12/472832

Inventors:

Shuguang Lu - Troy MI, US
David B. Brown - Brighton MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - Detroit MI

International Classification:

F01N 3/035
F01N 3/10

US Classification:

60297, 60299

Abstract:

In an exemplary embodiment of the present invention, an exhaust treatment system for reducing constituents in the exhaust gas of an internal combustion engine is provided. A ceramic monolith is disposed within the exhaust treatment system and has exhaust flow passages extending therethrough that are defined by longitudinally extending walls therebetween. A first catalyst composition for catalytic reduction of oxides of nitrogen in the exhaust gas is applied to a first portion of the exhaust flow passages. A second catalyst composition for catalytic oxidation of hydrocarbons and oxides of nitrogen in the exhaust gas is applied serially downstream to a second, portion of the exhaust flow passages. The second catalytic composition is configured to reduce ammonia and hydrocarbon slip past the first catalytic composition.