Patent application number | Description | Published |
20120323465 | METHODS AND SYSTEMS FOR EXHAUST GAS RECIRCULATION COOLER REGENERATION - Various methods and systems are provided for regenerating an exhaust gas recirculation cooler. One example method includes, initiating an EGR cooler regeneration mode, wherein the EGR cooler regeneration mode comprises changing a fuel distribution of a donor cylinder group relative to a non-donor cylinder group of an engine, and increasing at least one of engine speed or load of the engine. | 12-20-2012 |
20120323470 | METHODS AND SYSTEMS FOR EXHAUST GAS RECIRCULATION COOLER REGENERATION - Various methods and systems are provided for regenerating an exhaust gas recirculation cooler. One example method includes, routing exhaust gas from a donor cylinder group of an engine to an intake passage of the engine through the exhaust gas recirculation cooler, routing exhaust gas from a non-donor cylinder group of the engine to an exhaust passage of the engine, and adjusting fuel distribution among the donor cylinder group and the non-donor cylinder group responsive to a temperature of the exhaust gas recirculation cooler. | 12-20-2012 |
20130046424 | METHOD AND SYSTEM FOR ENGINE EXHAUST FILTER REGENERATION OF A VEHICLE IN A CONSIST - Methods and systems for distributing engine output among rail vehicles of a consist are disclosed. One method comprises, adjusting redistribution of engine output from at least a first engine to at least a second engine based on a particulate filter regeneration of a filter coupled to the second engine. | 02-21-2013 |
20130111875 | METHODS AND SYSTEMS FOR REGENERATING AN EXHAUST GAS RECIRCULATION COOLER - Various methods and systems are provided for regeneration of an exhaust gas recirculation cooler. One example method includes adjusting cooling of exhaust gas by an exhaust gas recirculation cooler to maintain a manifold air temperature during an idle condition of an engine. The method further includes initiating regeneration of the exhaust gas recirculation cooler during the idle condition when an effectivity of the exhaust gas recirculation cooler falls below a threshold effectivity prior to or during the idle condition. | 05-09-2013 |
20130186376 | METHODS AND SYSTEMS FOR EXHAUST GAS RECIRCULATION - 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. | 07-25-2013 |
20130340430 | SYSTEMS AND METHODS FOR A HYDRAULICALLY ACTUATED ENGINE VALVE - Various methods and systems are provided for controlling a hydraulically actuated engine valve. In one example, a system includes a hydraulically actuated engine valve and an engine having a first hydraulic system. The system further includes a second hydraulic system, which is separate from the first hydraulic system, and where the second hydraulic system provides fluid pressure to actuate the valve. | 12-26-2013 |
20140026565 | SYSTEMS AND METHODS FOR ROUTING EXHAUST - Various systems and methods are provided for routing exhaust from an engine. In one example, a system includes a high pressure turbine and a low pressure turbine. The system further includes a first passage for routing exhaust from a first subset of cylinders, bypassing the high pressure turbine, to upstream of the low pressure turbine in an exhaust passage of the engine, and a second passage for routing exhaust from a second, different, subset of cylinders to upstream of the high pressure turbine. | 01-30-2014 |
20140053548 | SYSTEMS AND METHODS FOR A HYDRAULICALLY ACTUATED VALVE - Various methods and systems are provided for a hydraulically actuated engine valve. In one example, a method includes receiving an indication of a temperature of an exhaust flow exceeding a threshold temperature. The method further includes responsive to the indication, increasing a flow, in a hydraulically actuated valve system having a valve and an actuator in thermal communication with the exhaust flow, of hydraulic fluid through the actuator, to manage a temperature of the actuator. | 02-27-2014 |
20140214302 | METHOD AND SYSTEM FOR CHARGE AIR SYSTEM VALVE DIAGNOSIS - 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. | 07-31-2014 |
20140230407 | METHOD AND SYSTEM FOR MAGNETIC PARTICLE DETECTION IN A CHARGE AIR SYSTEM - Various methods and systems are provided for detecting particles generated from engine component degradation within an engine system. In one embodiment, a method for an engine comprises indicating engine degradation in response to a buildup of particles in a magnetic field, the magnetic field positioned in a flow of gas. | 08-21-2014 |
20140230434 | METHODS AND SYSTEM FOR COOLING EXHAUST SYSTEM COMPONENTS - Various methods and systems are provided for cooling exhaust system components. In one example, a method comprises directing compressed air onto an exterior of an engine exhaust passage valve. | 08-21-2014 |
20140360362 | METHOD AND SYSTEMS FOR PARTICLE SEPARATION IN AN EXHAUST GAS RECIRCULATION SYSTEM - Various methods and systems are provided for separating particles within a gas flow traveling through a gas flow passage of an engine. In one embodiment, a particle separator includes a plurality of vanes positioned across a gas flow passage through which gas flow passes, the plurality of vanes angled with respect to a flow direction of the gas flow, and a particle trap for collecting separated particles, the particle trap disposed in the gas flow passage. | 12-11-2014 |
20150013312 | METHOD AND SYSTEM FOR REGENERATION IN A VEHICLE IN A CONSIST - Methods and systems for distributing engine output among vehicles of a consist are disclosed. One example system comprises a controller including non-transitory media having instructions stored on the media and executed by the controller for adjusting distribution of engine output between at least a first engine and a second engine in response to a regeneration mode, wherein the regeneration mode regenerates an exhaust gas recirculation (EGR) cooler that is coupled to the first engine. | 01-15-2015 |