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Cummins Emission Solutions Inc patents


Recent patent applications related to Cummins Emission Solutions Inc. Cummins Emission Solutions Inc is listed as an Agent/Assignee. Note: Cummins Emission Solutions Inc may have other listings under different names/spellings. We're not affiliated with Cummins Emission Solutions Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "C" | Cummins Emission Solutions Inc-related inventors


Nox sensor diagnostic system and method

A system includes: a nox sensor; and a controller configured to: increase an amount of o2 in a chamber of the nox sensor; interpret one or more values of a parameter indicative an amount of o2 and/or nox measured by the nox sensor; determine if the one or more values of the parameter exceed a threshold value; and indicate a failure of the nox sensor responsive to the one or more values of the parameter do not exceed the threshold value.. . ... Cummins Emission Solutions Inc

Automatic performance tuning for diesel exhaust fluid dosing unit

An auto-calibration controller configured to automatically tune a dosing unit of an aftertreatment system. The auto-calibration controller is configured to command the dosing unit to dose reductant at a first dosing command rate at a first input pressure value based on a dosing command value of a dosing command table. ... Cummins Emission Solutions Inc

Systems and methods for enhancing catalytic efficiency of scr catalysts

A method for increasing a catalytic efficiency of a catalyst, comprising providing a catalyst. Finally, the catalyst is installed into a selective catalytic reduction system of an aftertreatment system configured to reduce constituents of an exhaust gas generated by an engine. ... Cummins Emission Solutions Inc

Integrated aftertreatment system

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. ... Cummins Emission Solutions Inc

System and method for monitoring particulate filter condition in an aftertreatment system

A system and method for monitoring filtering condition in an aftertreatment system comprises measuring a first pressure upstream of a first particulate filter in the aftertreatment system. A second pressure downstream of the first particulate filter and upstream of a second particulate filter in the aftertreatment system is measured. ... Cummins Emission Solutions Inc

Systems and methods for purging an exhaust reductant delivery system

A hydraulic system comprises a fluid tank and a pump, including a pump reservoir, fluidly coupled to the tank via a supply line. A valve is in fluidic communication with the pump reservoir via a pressure line. ... Cummins Emission Solutions Inc

Reagent doser diagnostic system and method

Systems and methods are disclosed for determining or diagnosing a reagent dosing system failure to provide sufficient reagent to an exhaust aftertreatment system that includes an scr catalyst to satisfy a reagent dosing command.. . ... Cummins Emission Solutions Inc

Asynchronous reductant insertion in aftertreatment systems

An aftertreatment system comprises a first scr system, a second scr system positioned downstream of the scr system and a reductant storage tank. At least one reductant insertion assembly is fluidly coupled to the reductant storage tank. ... Cummins Emission Solutions Inc

Article of manufacture for securing a catalyst substrate

An aftertreatment component for use in an exhaust aftertreatment system. The aftertreatment component comprises an aftertreatment substrate and a compressible material. ... Cummins Emission Solutions Inc

Compact side inlet and outlet exhaust aftertreatment system

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. ... Cummins Emission Solutions Inc

Single module integrated aftertreatment module

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. ... Cummins Emission Solutions Inc

Systems and methods for diagnosing selective catalytic reduction systems

An aftertreatment system comprises a scr system, an engine out nox (eonox) adjustment system and a controller. The controller is configured to instruct the eonox adjustment system to adjust an eonox amount between a high eonox level for a first predetermined time and a low eonox level for a second predetermined time when the scr system is in a diagnostic enabling condition. ... Cummins Emission Solutions Inc

Exhaust fluid filter including hydrocarbon detection witness media

An aftertreatment system includes an exhaust reductant tank configured to store an exhaust reductant. A filter is fluidically coupled to the exhaust reductant tank. ... Cummins Emission Solutions Inc

Selective catalytic reduction with integrated decomposition chamber with exhaust flow swirl generating design

A selective catalytic reduction including a decomposition section including an intake chamber, with a swirl generating plate disposed in an internal volume of the intake chamber. The swirl generating plate includes a curved sidewall, a first end defining an opening, and a second end. ... Cummins Emission Solutions Inc

12/07/17 / #20170350291

Scr conversion efficiency diagnostics

A system for determining a performance status of an exhaust aftertreatment system may include determining an ammonia-to-nitrogen ratio using a sample ammonia input value and a sample nox input value. An actual nox input value and an actual ammonia input value can be received. ... Cummins Emission Solutions Inc

11/16/17 / #20170328251

Systems and methods for reducing noise in reductant insertion assemblies

An aftertreatment system comprises an aftertreatment component structured to decompose constituents of an exhaust gas produced by an engine. A reductant insertion assembly is fluidly coupled to the aftertreatment component and configured to insert a reductant therein. ... Cummins Emission Solutions Inc

11/09/17 / #20170321583

Nitrogen oxide signal multiplexing system

Nitrogen oxide multiplexing systems are provided. Various embodiments provide for systems comprising an aftertreatment component configured to treat exhaust exiting an engine, a sensor, a conduit, and a switching device. ... Cummins Emission Solutions Inc

10/26/17 / #20170306827

Catalyst failure detection based combined ammonia to nox ratios, conversion inefficiency values and ammonia slip values

Implementations of systems and methods for detecting the failure of an selective catalytic reduction (scr) catalyst may include a controller or one or more circuits for acquiring an ammonia to nox ratio (anr) value for exhaust gas flowing through an exhaust system, acquiring a conversion inefficiency value indicative of a conversion inefficiency of the scr catalyst, acquire an nh3 slip value indicative of an amount of nh3 slip through the exhaust system downstream of the scr catalyst, calculate a combined anr/conversion inefficiency/nh3 slip (acn) value based on the anr value, conversion inefficiency value, and nh3 slip value, and indicating a failure of the scr catalyst responsive to the calculated acn value exceeding a predetermined threshold value.. . ... Cummins Emission Solutions Inc

10/26/17 / #20170304781

Diesel exhaust fluid mixing body using variable cross-section switchback arrangement

An aftertreatment system includes a filter configured to receive an exhaust gas and a selective catalytic reduction (scr) system configured to treat the exhaust gas. A body mixer is disposed downstream of the filter and upstream of the scr system. ... Cummins Emission Solutions Inc

10/05/17 / #20170284253

Aftertreatment systems for dual-fuel engines

Systems and methods for an aftertreatment system configured for use with a dual-fuel engine system are described. The method comprises determining an operating mode of the dual-fuel engine. ... Cummins Emission Solutions Inc

09/21/17 / #20170268979

System and method of sensor reconditioning in an exhaust aftertreatment system

The present disclosure relates to a system, apparatus, and method for reconditioning a particulate matter sensor in an exhaust aftertreatment system that will resist poisoning. The system and method includes receiving particulate matter data indicating a state of the particulate matter sensor; determining that the particulate matter sensor is in a full state based on the particulate matter data; activating a heating element of the particulate matter sensor to a multiple of intermittent temperatures that clean the sensor pre-patory to the next measurement. ... Cummins Emission Solutions Inc

09/21/17 / #20170266649

Hydrocarbon storage optimization and coking prevention on an oxidation catalyst

An oxidation catalyst may include hydrocarbon storage material. One implementation relates to a diesel oxidation catalyst that includes a catalyst having a front zone and a rear zone and a gradient of hydrocarbon storage material on the catalyst extending from the front zone to the rear zone. ... Cummins Emission Solutions Inc

08/24/17 / #20170241455

Dual purpose clamp for securing aftertreatment housing joints

An apparatus comprises a housing comprising a housing first portion and a housing second portion. The housing first portion comprises a first joint portion overlapping a second joint portion of the housing second portion so as to form a housing joint. ... Cummins Emission Solutions Inc

08/24/17 / #20170241314

Self-tuning circuit for controlling input pressure values for an aftertreatment system

A controller including a self-tuning circuit for controlling a pressure system to output an input pressure corresponding to an input pressure value using an adaptive fuzzy control system and updating dosing command values of a dosing command table for controlling a dosing unit of an aftertreatment system. The self-tuning circuit is configured to determine an input pressure value and generate a pressure control signal using the adaptive fuzzy control system based on the input pressure value, a detected input pressure, and an error amount. ... Cummins Emission Solutions Inc

08/17/17 / #20170234200

Virtual reductant level sensor

An aftertreatment system comprises a reductant storage tank and a scr system fluidly coupled thereto. A reductant physical level sensor and a tank temperature sensor are operatively coupled to the reductant storage tank. ... Cummins Emission Solutions Inc

08/17/17 / #20170234183

System and methods for reducing sox gases in aftertreatment systems

An aftertreatment system comprises a scr system including a catalyst formulated to decompose constituents of an exhaust gas passing therethrough. A filter is positioned upstream of the scr system. ... Cummins Emission Solutions Inc

08/17/17 / #20170232833

Strap adjustment mechanism

A strap adjustment mechanism may include a pin with a pin opening that is insertable into a looped portion of an end of a strap. The strap adjustment mechanism may also include a fastener support assembly that has a first member and a second member. ... Cummins Emission Solutions Inc

07/06/17 / #20170191393

Reductant apportionment for multi-dosing architectures

A system for apportioning reductant dosing amounts in multi-doser architectures includes an engine, an aftertreatment system in fluid communication with the engine, and a controller. The aftertreatment system includes a first doser configured to dose reductant into a first decomposition reaction member and a second doser configured to dose reductant into a second decomposition reaction member. ... Cummins Emission Solutions Inc

06/29/17 / #20170184004

Sensor table for single unit aftertreatment system

A sensor mounting table for mounting sensors to an aftertreatment system may include a sensor mounting plate having a substantially flat mounting surface for mounting one or more sensors associated with the aftertreatment system. The substantially flat mounting surface may be offset from a heat shield of the aftertreatment system. ... Cummins Emission Solutions Inc

06/22/17 / #20170175608

Systems and techniques for nozzle cooling of diesel exhaust fluid injection systems

A system is provided for delivery of diesel exhaust fluid or other reductant to an injector for release into an engine exhaust aftertreatment system. The injector includes a nozzle assembly that thermally shields the diesel exhaust fluid from the exhaust gas temperatures. ... Cummins Emission Solutions Inc

06/15/17 / #20170167340

Electronic pressure relief in pumps

An aftertreatment system comprises a reductant storage tank and a selective catalytic reduction (scr) system including a catalyst for reducing constituents of an exhaust gas. A reductant insertion assembly including a pump and dosing valve is fluidly coupled to the pump and the scr system. ... Cummins Emission Solutions Inc

06/08/17 / #20170159535

Soot load estimation during idle or low load

A system can include an engine, an aftertreatment system with a particulate filter, and a controller. The controller is configured to compare a time value since a last delta pressure soot load estimate process to a predetermined time threshold. ... Cummins Emission Solutions Inc

06/08/17 / #20170159525

Use of specific engine cylinders for reductant generation

A system comprises an engine including a plurality of cylinders. A first intake throttle is positioned upstream of a first set of cylinders of the plurality of cylinders. ... Cummins Emission Solutions Inc

06/01/17 / #20170152785

Use of pressure differential in selective catalytic reduction systems

Systems and methods to determine the pressure differential for selective catalytic reduction systems includes a first sensor coupled to an inlet of a selective catalytic reduction system, a second sensor coupled to an outlet of the selective catalytic reduction system, and a controller communicatively coupled to the selective catalytic reduction system. The controller is configured to interpret a first parameter indicative of a first pressure amount of the selective catalytic reduction system measured by the first sensor, interpret a secondary parameter indicative of a secondary pressure amount of the selective catalytic reduction system measured by the second sensor, determine a plurality of operating parameters based, at least in part, on the interpretation of the first parameter and the secondary parameter, and generate a selective catalytic reduction command based, at least in part, on the determination of the plurality of operating parameters.. ... Cummins Emission Solutions Inc

04/20/17 / #20170107882

Mounting plate for mounting injectors and directing reductant flow in exhaust conduits

An aftertreatment system comprises a scr system including at least one catalyst for decomposing constituents of an exhaust gas produced by an engine. An exhaust conduit is fluidly coupled to the scr system and is structured to deliver the exhaust gas to the scr system and defines an exhaust conduit opening on a sidewall thereof. ... Cummins Emission Solutions Inc

04/20/17 / #20170107877

Variable geometry exhaust conduit

A method for reducing reductant deposits in an exhaust conduit fluidly coupled to an engine comprises operating the engine to produce an exhaust gas. The exhaust gas is communicated into the exhaust conduit which has an initial cross-sectional area. ... Cummins Emission Solutions Inc

04/13/17 / #20170101913

System and method for varying reductant delivery pressure to aftertreatment systems

An aftertreatment system comprises a reductant storage tank and a scr system including a catalyst for reducing constituents of an exhaust gas. A reductant insertion assembly is fluidly coupled to the reductant storage tank and the scr system. ... Cummins Emission Solutions Inc

03/30/17 / #20170089247

System and method for creating catalyst obd limit parts for exhaust aftertreatment applications

Catalyst diagnostic limit parts and methods for making catalyst diagnostic limit parts are disclosed. An exemplary catalyst diagnostic limit part includes a substrate and a washcoat coating the substrate. ... Cummins Emission Solutions Inc

03/30/17 / #20170089245

Selective dosing module control system

Systems and methods to selectively control plurality of dosing modules may include receiving data indicative of an exhaust flow rate. An amount of reductant to be dosed may be determined based, at least in part, on the data indicative of the exhaust flow rate. ... Cummins Emission Solutions Inc

03/16/17 / #20170074141

Diesel exhaust fluid deposit mitigation

One form of the present application is an apparatus including an internal combustion engine structured to produce an exhaust flow, an exhaust system structured to receive the exhaust flow, and a reductant injector structured to inject reductant into a primary passage of the exhaust system upstream of a catalyst. The apparatus further includes an injector passage structured to receive a portion of exhaust upstream of the injector and further structured to flow the exhaust into the primary passage around the injector in a manner such that deposit formation is reduced.. ... Cummins Emission Solutions Inc

03/09/17 / #20170067387

Asynchronous reductant insertion in aftertreatment systems

An aftertreatment system comprises a first scr system, a second scr system positioned downstream of the scr system and a reductant storage tank. At least one reductant insertion assembly is fluidly coupled to the reductant storage tank. ... Cummins Emission Solutions Inc

02/16/17 / #20170044949

Virtual reductant level sensor

An aftertreatment system comprises a reductant storage tank and a scr system fluidly coupled thereto. A reductant physical level sensor and a tank temperature sensor are operatively coupled to the reductant storage tank. ... Cummins Emission Solutions Inc

02/09/17 / #20170037766

Mounting aftertreatment systems from service joints

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. ... Cummins Emission Solutions Inc

02/09/17 / #20170037759

Converging liquid reductant injector nozzle in selective catalytic reduction systems

A liquid reductant injector nozzle includes a first portion defining a hollow cylindrical static chamber, in fluid communication with second portion defining a hollow frustoconical converging section, which is in turn in fluid communication with a sharp edged type discharge orifice. The hollow cylindrical static chamber is in reductant receiving communication with a reductant source, and has a first and second circular opening having equal diameters. ... Cummins Emission Solutions Inc

02/02/17 / #20170030238

Angled sensor mount for use with a single module aftertreatment system or the like

Implementations described herein relate to features for a single module aftertreatment system. The single module aftertreatment system includes a casing, a catalyst within the casing, and a sensor mount coupled to the casing. ... Cummins Emission Solutions Inc

01/26/17 / #20170022865

Nox estimation using local state-space models

Implementations described herein relate to utilizing discrete transient local state space models to modify an output from a steady state nox estimation model to provide a final estimated nox value. An engine operating space, defined by a speed and injection quantity map, is subdivided into several discrete local state spaces and a transient model is developed for each discrete state space to output a nox estimation correction value. ... Cummins Emission Solutions Inc

01/19/17 / #20170016369

Visual marking and geometric poke-yoke for fluid and electrical lines of aftertreatment systems

An aftertreatment system comprises an scr system and at least one reductant insertion assembly fluidly coupled thereto. The reductant insertion assembly includes an injector and reductant storage tank. ... Cummins Emission Solutions Inc

01/05/17 / #20170002707

Constant mass flow injection system

Exhaust aftertreatment assemblies and methods of manufacturing and operating exhaust aftertreatment assemblies. The exhaust aftertreatment assembly includes a reductant delivery device, a reductant source fluidly coupled to the reductant delivery device, a mixing chamber positioned between the reductant delivery device and the reductant source and thereby fluidly coupling the reductant source to the reductant delivery device, and a compressed air source fluidly coupled to the mixing chamber upstream of the mixing chamber with respect to the reductant delivery device. ... Cummins Emission Solutions Inc








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