Cummins Emission Solutions Inc.

Gaurav Hemant Pandit

John G Buechler

Samuel Johnson

Matthew K Volmerding

Jacob W Brown

George Eugene Mavroudis

Ryan M Johnson

Randolph G Zoran

Stephen M Holl

Jim L Alonzo

Apoorv Kalyankar

Taren DeHart

Matthew L Anderson

Enoch Nanduru

Thyago Cruz

Allick Mounir Olive

Sagar Maruti Jarali

Narenthiran Thangamuthu

Ramesh Ramavath

Sriram Narayanasamy

A decomposition chamber for an exhaust aftertreatment system includes an inlet conduit centered on an inlet conduit axis and configured to receive exhaust, a decomposition conduit coupled to the inlet conduit, an endcap coupled to the decomposition conduit, and an injector coupled to the endcap and configured to provide reductant into the decomposition conduit along an injection axis. The decomposition chamber includes a guide swirl mixer coupled to at least one of the inlet conduit or the endcap. The guide swirl mixer includes a first portion disposed within the inlet conduit, and a second portion disposed within the decomposition conduit such that the inlet conduit axis extends through the second portion. The second portion extends at least partially around the injection axis.

Decomposition chamber with guide swirl mixer

A lance injector assembly for an exhaust component includes: a shaft configured to extend into an exhaust conduit of the exhaust component, the shaft being hollow so as to define a channel therethrough, wherein an opening is defined in a wall of the shaft proximate to a second end of the shaft that is opposite the first end; a cap coupled to a first end of the shaft; and a supply line disposed within the channel defined by the shaft, wherein a nozzle is disposed at a downstream end of the supply line, the nozzle being fluidly coupled to the shaft around the opening such that reductant is able to flow from the nozzle through the opening and into an exhaust gas flowing through the exhaust conduit. Air is present in the space between the supply line and the wall of the shaft, the air inhibiting heat transfer to the supply line.

Liquid only lance injector

A lance injector assembly for an exhaust component includes: an exhaust conduit; a shaft configured to extend into the exhaust conduit and dispense reductant from a hydraulically-actuated valve; an actuator configured to operate the hydraulically-actuated valve; and a mounting system configured to couple the actuator and the shaft to the exhaust conduit. The mounting system prevents the actuator from directly contacting the exhaust conduit.

An exhaust gas aftertreatment system includes a decomposition reactor, an injector, and a processor. The decomposition reactor includes a body, an impingement structure, and a heater. Exhaust gas is flowable through the body. The body includes an inlet and an outlet. The inlet is configured to receive the exhaust gas at a first temperature. The outlet is configured to selectively expel the exhaust gas at a second temperature greater than the first temperature. The impingement structure is disposed within the body between the inlet and the outlet. The impingement structure extends into the body and is located such that the exhaust gas flowing through the body impinges on the impingement structure. The heater is coupled to the impingement structure and configured to selectively heat the impingement structure. The injector is configured to inject reductant into the body. The processor is programmed to control the heater.

Systems and methods for reducing reductant deposit formation in a decomposition reactor of an exhaust gas aftertreatment system for an internal combustion engine

A lance injector assembly for an exhaust component is provided. The lance injector assembly includes a lance and a poppet valve. The lance includes a lance housing, a supply passage fluidly coupled to a reductant source and terminating at a nozzle orifice, and a return passage fluidly coupled to the reductant source. The poppet valve is positioned downstream of the nozzle orifice and includes a poppet movable between a closed position and an open position. When operating in a recirculation mode, the poppet is in the closed position to permit a full portion of reductant supplied to the lance from the reductant source to return to the reductant source. When operating in an injection mode, the poppet is in the open position to permit a first portion of reductant to flow from the nozzle orifice and a second portion of reductant to return to the reductant source.

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

A system for reutilizing exhaust energy including a decomposition reactor, a turbine including a magnet, the turbine in fluid communication with the decomposition reactor, a coil disposed proximate to the decomposition reactor, the coil electrically coupled to the magnet, and a controller communicatively coupled to the turbine, the controller structured to determine exhaust energy output of a turbine associated with an exhaust system, and cause generation of a magnetic field based on the exhaust energy output, wherein the magnetic field causes a portion of the decomposition reactor to heat.

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Columbus, IN, United States of America

Gaurav Hemant Pandit