Sandro Balestrino

US Patent:

20110107743, May 12, 2011

Filed:

Nov 10, 2009

Appl. No.:

12/615618

Inventors:

Raj P. Ranganathan - Rochester Hills MI, US
Sandro Balestrino - Plymouth MI, US
Robert D. Straub - Lowell MI, US
Xiaobin (Sharon) Li - Livonia MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - Detroit MI

International Classification:

F01N 3/10

US Classification:

60295

Abstract:

A diffuser for aiding in the vaporization and mixing of an injected reactant with the exhaust gas feed stream of an exhaust gas aftertreatment system is disclosed. The diffuser is disposed within an exhaust gas conduit of the exhaust gas aftertreatment system and has an impingement surface and a baffle plate disposed downstream of and adjacent thereto. The baffle plate extends outwardly from the diffuser, to terminate at a baffle plate tip that is located intermediate of the diffuser and an inner wall of the exhaust gas conduit. The baffle plate is operable to trap a portion of an exhaust gas feed stream, and a reactant resident therein, to increase the vaporization and residence time of the reactant in the exhaust gas feed stream.

US Patent:

20140020361, Jan 23, 2014

Filed:

Jun 25, 2013

Appl. No.:

13/926036

Inventors:

PATRICK G. SZYMKOWICZ - SHELBY TOWNSHIP MI, US
SANDRO R. BALESTRINO - PLYMOUTH MI, US

International Classification:

F02M 25/07

US Classification:

60273, 60278

Abstract:

An apparatus for mitigating fouling within a heat exchanger device includes an internal combustion engine fluidly coupled to an intake manifold upstream of the engine and an exhaust gas manifold downstream of the engine. The apparatus further includes an external exhaust gas recirculation circuit fluidly coupled to the exhaust gas manifold at a first end and configured to selectively route exhaust gas flow into the intake manifold at a second end. The exhaust gas recirculation circuit includes the heat exchanger device for cooling the EGR flow prior to entering the intake manifold, and a deposit filter fluidly coupled upstream of the heat exchanger device and configured to trap combustion by-products within the EGR flow.

US Patent:

20140020362, Jan 23, 2014

Filed:

Jun 25, 2013

Appl. No.:

13/926059

Inventors:

PATRICK G. SZYMKOWICZ - SHELBY TOWNSHIP MI, US
SANDRO R. BALESTRINO - PLYMOUTH MI, US
RICHARD C. PETERSON - TROY MI, US

International Classification:

F01N 3/08

US Classification:

60274, 60282

Abstract:

An apparatus for mitigating fouling within a heat exchanger device includes an internal combustion engine and an external exhaust gas recirculation (EGR) circuit. The internal combustion engine is fluidly coupled to an intake gas manifold upstream of the engine and an exhaust gas manifold downstream of the engine. The EGR circuit is fluidly coupled to the exhaust gas manifold at a first end and is configured to selectively route back exhaust gas flow as EGR flow into the intake gas manifold at a second end. The EGR circuit includes the heat exchanger device for cooling the EGR flow prior to entering the intake manifold and a surface deposit removing device configured to remove surface deposit build-up from within the heat exchanger device when the surface deposit removing device is activated.