Gm Global Technolgoy Operations, Inc.

David Brian Brown

Eugene Victor Gonze

Wei Ping Li

Michael J Paratore, Jr

Frank Ament

Rahul Mital

Gongshin Qi

Chang H Kim

Steven Jeffrey Schmieg

Yongsheng He

Michael B Viola

Jong H Lee

Jianwen Li

Michael Christopher Luckham

Shouxian Ren

Luciano Nunziato Di Perna

Kevin Berent Fuqua

David A Frank

Kasser A Jaffri

Yue-Yun Wang

Paul M Najt

Michael J Lucido

Chang Han Kim

Igor Anilovich

Raffaello Ardanese

David P Sczomak

Vincent J Tylutki

Kushal Narayanaswamy

David J Cleary

Jesse Michael Gwidt

Stuart R Smith

Kevin L Perry

Orgun A Guralp

Charles E Dean

Michelle H Wiebenga

Christopher R Graham

Stephen K Fulcher

Norman Dale Brinkman

Arjun D Tuteja

David A Singer

Shuguang Lu

Linda Garcia

An exhaust gas treatment device includes a housing having a wall. The wall of the housing defines an interior chamber. A substrate is supported by the housing within the interior chamber of the housing. The substrate extends along a longitudinal axis. The substrate includes a flow through structure that allows the flow of exhaust gas to flow through the substrate. The substrate includes a catalytic composition disposed thereon for reacting with the flow of exhaust gas. The substrate includes a cavity, extending along a cavity axis, which is transverse to the longitudinal axis of the substrate. A sensor is attached to the housing. The sensor includes a probe that at least partially extends into the cavity of the substrate, for sensing a gaseous component in the flow of exhaust gas. The cavity mixes the flow of exhaust gas and directs the exhaust gas toward the probe of the sensor.

Exhaust gas treatment device having integrated gas sampling sensor

A method for diagnosing an Oxidation Catalyst (OC) device of an exhaust gas treatment system is provided. The method monitors a differential temperature across the OC device. The method determines whether the differential temperature reveals a temperature spike. The method determines that the OC device operates properly in response to determining that the differential temperature reveals a temperature spike.

Diagnosing oxidation catalyst device with hydrocarbon storage

An integrated sensor-catalyst is disclosed for an after-treatment (AT) system used to filter an exhaust gas flow emitted by an internal combustion engine. The integrated sensor-catalyst includes a sensor element configured to detect a parameter of the exhaust gas flow. The integrated sensor-catalyst also includes a micro-catalyst element configured to filter a pollutant from the exhaust gas flow. Additionally, the integrated sensor-catalyst includes a housing configured to hold the sensor element and the micro-catalyst element and fix the micro-catalyst element relative to the sensor element such that the micro-catalyst element is arranged and maintained in the exhaust gas flow upstream of the sensor element. A vehicle including such an AT system with the integrated sensor-catalyst is also disclosed.

Integrated sensor-catalyst

A method for removing NOfrom an oxygen-rich exhaust flow produced by a combustion source that is combusting a lean mixture of air and fuel may include passing the oxygen-rich exhaust flow through an exhaust aftertreatment system that includes a NOoxidation catalyst that includes perovskite oxide particles, a NOstorage catalyst, and a NOreduction catalyst.

Perovskite oxide compounds for use in exhaust aftertreatment systems

An exemplary method and associated architecture for reducing NOand particulate matter emissions in an exhaust stream may include passing the exhaust stream through a catalytic oxidation reactor; passing the exhaust stream through a two-way selective reduction catalyst particulate filter located downstream of the catalytic oxidation reactor, wherein the two-way selective reduction catalyst particulate filter may include a wall flow filter substrate having internal walls coated with a first selective catalytic reduction catalyst; and passing the exhaust stream through a catalytic reduction reactor located downstream of the two-way selective reduction catalyst particulate filter, wherein the catalytic reduction reactor may include a second selective catalytic reduction catalyst.

Method and architecture for reducing NOX and particulate matter emissions in exhaust gas from hydrocarbon fuel source with a fuel lean combustion mixture

One embodiment of the invention may include a method comprising providing a product comprising a substrate comprising a perovskite catalyst, NOstored in or on the substrate and particulate matter in or on the substrate; releasing at least some of the stored NOand oxidizing the released NOx to form NO, and reacting the NOwith carbon in the particulate matter to form at least one of CO or CO.

Perovskite-based catalysts, catalyst combinations and methods of making and using the same

One embodiment includes an oxidation catalyst assembly formed by applying a washcoat of platinum and a NOstorage material to a portion of a substrate material.

[object Object]

An ash filter for a reciprocating piston internal combustion engine is disclosed. The ash filter includes a substrate, such as a honeycomb monolith substrate or a plurality of particulate substrates, and a matrix of a zeolite material disposed on the respective substrate or substrates, the matrix of the zeolite material configured to remove ash from an exhaust gas flow from a reciprocating piston internal combustion engine. An exhaust treatment system for a reciprocating piston internal combustion engine is disclosed. The exhaust treatment system includes an ash filter comprising a matrix of a first zeolite and configured to receive an exhaust gas flow from an engine; and an exhaust treatment device, the exhaust treatment device comprising a matrix of a second zeolite and configured to receive the exhaust gas flow from the ash filter.

Ash filter, exhaust gas treatment system incorporating the same and method of using the same

A catalyst and method of forming the catalyst includes a catalyst body having hydrocarbon adsorber material and oxygen storage capacity material disposed thereon.

Method and system for monitoring a hydrocarbon adsorber

A regeneration system for a filter that filters exhaust gas of an engine includes a soot loading determination module that determines soot accumulation in the filter. A regeneration control module receives the determined soot accumulation from the soot loading determination module, compares the soot accumulation to a first soot accumulation threshold, and selectively increases oxidation levels in the exhaust gas in response to the comparison between the soot accumulation and the first soot accumulation threshold to initiate regeneration in the filter.

Particulate filter regeneration method

A system for a vehicle, includes a conversion temperature determination module and a heating control module. The conversion temperature determination module generates a methane conversion temperature corresponding to a predetermined methane conversion efficiency. The heating control module selectively applies power to a substrate of an electrically heated catalyst (EHC) based on a temperature of the EHC and the methane conversion temperature. The EHC includes at least one catalyst that reacts with methane in exhaust output from an engine.

Exhaust methane control systems and methods

An exhaust gas treatment system for a diesel engine is disclosed. The exhaust gas treatment system includes a lean NOtrap (LNT) in fluid communication with a diesel engine to receive an exhaust gas flow therefrom. The system also includes a two-way catalyst in fluid communication with the LNT to receive the exhaust gas flow therefrom, the two-way catalyst comprising a urea selective catalytic reduction catalyst and a diesel particulate filter (DPF).

A thermal management system includes an enable module, a status module and a temperature control module. The enable module enables generation of ammonia for use in selective catalytic reduction (SCR) catalysts of an exhaust system during a passive SCR mode. The status module determines whether the exhaust system is operating in a passive SCR mode and generates a passive SCR active signal. The passive SCR mode includes operating an engine with rich air/fuel ratios. The temperature control module activates electrical heating of an oxidation catalyst based on the passive SCR active signal and a temperature of the oxidation catalyst.

Passive SCR control system and method

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.

Exhaust treatment system for an internal combustion engine

A method of monitoring operation of an exhaust treatment system of a diesel engine includes injecting a dosing agent into an exhaust and monitoring the operating conditions of an engine during normal driving conditions. A control module monitors inlet and outlet temperatures of a catalyst and compares the inlet temperature to the outlet temperature. The control module further evaluates the exhaust treatment system based on the inlet temperature, the outlet temperature and a predetermined temperature threshold.

Growing community of inventors

Brighton, MI, United States of America

David Brian Brown