Cummins Emission Solutions Inc.

Fleetguard, Inc.

Cummins Filtration Ip, Inc.

Randolph G Zoran

Ryan M Johnson

John G Buechler

Arvind V Harinath

David M Sarcona

George Eugene Mavroudis

Scott Lubenow

Stephen M Holl

Colin L Norris

A Carl McDonald, Jr

Andrew Komisarek

Eric R Butler

William J Runde

Shane O'Connor

Z Gerald Liu

William C Haberkamp

Murray R Schukar

Taren DeHart

Jacob D Canik

Jamie Archer

Thomas M Yonushonis

Samuel Johnson

Mihai Chiruta

Carl A McDonald

Kenneth R Federle

Michael T Lynch

Ryan Robert Welch

Daniel Edward Novreske

Juan Manuel Valencia Arcila

Michael Bates

Oscar Chavira

Brandon Leedy

Victor C Chew

Bucky Woods

Jack Erickson

Alex A Bethke

Chad Carius

Jim L Alonzo

Kurt M A Badeau

Apoorv Kalyankar

Stephen W Caddy

John M Clark

Jack Rehn, Iii

Matthew Robert Brookes

Matthew Henry

Richard Blaschko

Matthew K Volmerding

Achuth Munnannur

Patrick M Pierz

C Raymond Cheng

Matthew P Henrichsen

Matthew L Anderson

Travis E Goodlund

James Goss

Gaurav Hemant Pandit

Enoch Nanduru

Thomas L McKinley

Jay V Warner

Robert K Miller

Thomas A Fosdal

Kenneth Pawson

James Klingbeil

Pranjal Naik

Steven Stokstad

Daniel W Woods

Paul T Frisch

Isabel Valborg Montgomery

Shri R Sunilkumar

Brian K Fillbach

Gary J Frank

Daniel Maciejewski

Craig A Clayton

Douglas P Marquis

Darryl J Gust

O Michael Bowling

Guilherme Daldegan

Peter Te-Cheng Jang

Pradnya C Joshi

Aftertreatment system

An exhaust gas system includes an engine-turbine exhaust gas conduit, a turbocharger, a turbine-housing exhaust gas conduit, an injection housing, a dosing module, and a bypass system. The engine-turbine exhaust gas conduit is configured to receive exhaust gas. The turbocharger includes a turbine. The turbine is coupled to the engine-turbine exhaust gas conduit. The turbine-housing exhaust gas conduit is coupled to the turbine. The injection housing is coupled to the turbine-housing exhaust gas conduit and centered on an injection housing axis. The dosing module is coupled to the injection housing and includes an injector. The injector is configured to dose reductant into the injection housing. The injector is centered on an injector axis. The bypass system includes a bypass inlet conduit, a bypass valve, and a bypass outlet conduit. The bypass inlet conduit is coupled to the engine-turbine exhaust gas conduit.

Exhaust gas aftertreatment system

A polygonal substrate assembly includes a polygonal substrate housing, a substrate, and a compressible mat. The compressible mat is positioned about the substrate and the substrate is press-fit within the polygonal substrate housing with the compressible mat. The polygonal substrate housing may include a sidewall having a concave portion. The polygonal substrate housing may include a substrate installation portion that flares out from a main sidewall at an end of the polygonal substrate housing. The polygonal substrate housing may be formed from a plurality of substrate housing components welded together. The polygonal substrate housing can include one or more stiffening ribs. Several polygonal substrate assemblies may be combined and coupled together to form an array in various geometric configurations.

Polygonal substrate housings and assemblies

Implementations described herein relate to features for an integrated aftertreatment system. In one implementation, an integrated aftertreatment system comprises a casing that includes a mating flange having a first constant diameter and a catalyst component configured to mate to the mating flange of the casing. The catalyst component includes a canned body including a first portion sized to a second constant diameter to mate with the first constant diameter of the mating flange. In another implementation, an integrated aftertreatment system comprises a casing, a catalyst component positioned within the casing, a particulate filter having an outer casing with an outlet, and a particulate filter joint coupled to the outer casing of the particulate filter at the outlet. An end of the particulate filter joint is aligned with an end of the particulate filter.

Integrated aftertreatment system

An apparatus comprises a housing including a housing first portion having a first joint portion configured to overlap a second joint portion of a housing second portion so as to form a housing joint. A primary clamp is positioned at a primary location of the housing joint which abuts at least a portion of the first and the second joint portion. A mounting bracket is positioned on and contacts the primary clamp. A plurality of secondary clamps are positioned at secondary locations, each of which is different than the primary location, of the housing joint. A band is operatively coupled to the mounting bracket by positioning around and contacting each of the plurality of secondary clamps. The band is tightened to urge the mounting bracket and thereby the primary clamp, and the plurality of secondary clamps towards the housing joint to secure the housing joint.

Mounting aftertreatment systems from service joints

An aftertreatment component includes an inlet connector tube, an outlet connector tube, a chamber, a flow dissipater, and a substrate. The inlet connector tube receives exhaust gasses. The chamber is between the inlet connector tube and the outlet connector tube. The flow dissipater is positioned around the inlet connector tube and within the chamber. The flow dissipater receives the exhaust gasses from the inlet connector tube and includes a plurality of perforations. The plurality of perforations defines an open area of the flow dissipater. The open area of the flow dissipater is greatest proximate to the inlet connector tube and progressively decreasing proximate to the outlet connector tube. The substrate is positioned within the chamber and receives the exhaust gasses from the flow dissipater and provides the treated exhaust gasses to the outlet connector tube. The exhaust gases are expelled through the flow dissipater via the plurality of perforations.

Systems and methods for controlling flow distribution in an aftertreatment system

A selective catalytic reduction system may include a single housing defining a single centerline axis. The selective catalytic reduction system may also include a diesel particulate filter disposed within the single housing and having a DPF center axis aligned with the single centerline axis. The selective catalytic reduction system may also include an SCR catalyst disposed within the single housing and having a center axis aligned with the single centerline axis. In some implementations, the diesel particulate filter may include one or more SiC filters. In some implementations, the SCR catalyst may include one or more extruded SCR catalysts.

Single module integrated aftertreatment module

An aftertreatment component's shape, entrance geometry, and/or position within an aftertreatment assembly can be modified for local and/or bulk exhaust flow control. In some implementations, a body of the aftertreatment component has a non-circular cross-section, a non-circular opening, and/or a variable face geometry. The non-circular cross-section and/or opening can be of a variety of different shapes.

Substrate shape, geometry, positioning, and/or cell density to improve aftertreatment performance

An exhaust aftertreatment assembly and method of manufacturing and operating an exhaust aftertreatment assembly. An exhaust aftertreatment assembly includes an aftertreatment housing and an inlet conduit coupled to the aftertreatment housing at an inlet port so as to transfer exhaust gas into the aftertreatment housing. An inlet chamber is positioned in the aftertreatment housing. The inlet chamber is fluidly coupled to the inlet port of the aftertreatment housing to receive the exhaust gas from the inlet conduit.

Compact side inlet and outlet exhaust aftertreatment system

Growing community of inventors

McFarland, WI, United States of America

Randolph G Zoran