General Electric Company

Ge Global Sourcing LLC

Transportation IP Holdings, LLC

Shashi Kiran

James Edward Arner

Paul Lloyd Flynn

Shishir Tiwari

Lawrence Hoey Heverley, Iii

Jessica Lynn Plummer

Shridhar Shrikant Kulkarni

Eric David Peters

Gail Leroy Detar

Sebastian Walter Freund

Jassin Marcel Fritz

Prashant Srinivasan

James Henry Yager

Manthram Sivasubramaniam

Sharath Sridhar Aramanekoppa

Dipankar Deb

Prem Kumar Patchaikani

Sachin Shivajirao Kulkarni

Georgios Bikas

Douglas C Hofer

Douglas Carl Hofer

John Patrick Dowell

Stephen Mark Geyer

Chirag Bipinchandra Parikh

Nicholas Eric Hansen

Alexis Parker Gruschow

Roshan Shekhar Kotian

Milan Shah

Systems and methods are provided for controlling exhaust gas recirculation (EGR). In one example, an engine system includes a first EGR valve coupling an exhaust manifold to an engine exhaust system, a second EGR valve coupling the exhaust manifold to an engine intake system, and a control unit. The control unit selectively adjusts a position of the first EGR valve based on a target amount, and adjusts a position of the second EGR valve based on the target amount and a position of the first EGR valve. Responsive to a first degradation condition of the first EGR valve, the control unit adjusts the position of the second EGR valve based on the target amount and based on a pressure of the first exhaust manifold, and responsive to a second degradation condition of the first EGR valve, adjusts the position of the second EGR valve based on the target amount.

Method and systems for exhaust gas control

Methods and systems are provided related to an emissions control system. The emissions control system has an exhaust after-treatment system defining a plurality of distinct exhaust flow passages through which at least a portion of an exhaust stream can flow, e.g., the exhaust stream is produced by an engine. The emissions control system also includes a controller for controlling injection of reductant into the exhaust stream flowing through each of the flow passages. In one example, the emissions control system is configured for use in a vehicle, such as a locomotive or other rail vehicle.

Emissions control systems and methods

Various embodiments for an exhaust gas treatment device for a vehicle system are provided. In one example, the vehicle system includes an engine with a longitudinal axis, where a crankshaft of the engine is parallel to the longitudinal axis and an exhaust gas treatment device mounted on the engine, vertically above the engine such that a longitudinal axis of the exhaust gas treatment device is aligned in parallel with the longitudinal axis of the engine, the exhaust gas treatment device configured to receive exhaust gas from an exhaust manifold of the engine.

Device, method, and system for emissions control

Various systems are provided for supporting an exhaust gas treatment system vertically above an engine in an engine system. In one example, an engine system includes an engine; a support structure including a base and a plurality of mounting legs, a first end of each mounting leg of the plurality of mounting legs coupled to the base and an opposite, second end of each mounting leg of at least a portion of the plurality of mounting legs coupled to the engine, where at least three mounting legs of the plurality of mounting legs and the base form two triangles within a same plane of the support structure; and an exhaust gas treatment system positioned vertically above and mounted on the engine via the support structure.

Apparatus and system for directing exhaust gas flow

Various systems are provided for a support structure. In one embodiment, a system comprises a support structure including a plurality of support legs, a first end of each support leg of the plurality of support legs coupled to a respective cylinder head of a plurality of cylinder heads mountable to an engine block, the plurality of support legs configurable to support an exhaust aftertreatment system.

Support system for an aftertreatment system for an engine

Various methods and systems are provided for diagnosing the position and function of a valve in an engine system. In one embodiment, a method for an engine comprises determining a position of a valve in an engine system based on a turbine speed response upon commanded actuation of the valve.

Method and system for charge air system valve diagnosis

Various methods and systems are provided for a system for an engine. In one example, the system includes an exhaust passage through which exhaust gas is configured to flow from the engine. The system further includes an aftertreatment system disposed in the exhaust passage, the aftertreatment system including an aftertreatment device and a bypass with a bypass control element, the bypass control element adjustable to reduce exhaust gas flow through the aftertreatment device during tunneling operation.

Systems and methods for controlling exhaust flow through an aftertreatment device

Various injector cooling structures and related engine systems and methods are provided. In one example, an injector cooling structure includes a cooling channel defined by a cooling jacket of a turbine. A cooling bore is provided at least partially within the cooling jacket, with the cooling bore configured to receive a pintle of an injector. The cooling channel is configured to circulate coolant for cooling the injector.

Methods and systems for an engine

Mounting structure

Exhaust gas recirculation cooler

Various methods and systems are provided for diagnosing an engine component condition in an exhaust gas recirculation system. In one example, a method includes selectively routing exhaust from a subset of engine cylinders to an exhaust passage via a first valve and to an intake passage via a second valve, and obtaining one or more of a pressure or temperature from the subset of engine cylinders. The method further includes indicating an engine component condition based on the one or more of the pressure or temperature.

Methods and systems for exhaust gas recirculation

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Lawrence Park, PA, United States of America

Shashi Kiran