Abstract: An apparatus in a radiation therapy system includes: a base configured to support a first quality assurance phantom at a first position and a second quality assurance phantom at a second position; and at least one coupling element. The at least one coupling element is configured to: mate with at least one indexing feature of a first patient treatment couch of the radiation therapy system; and fix a position of the base relative to the first patient treatment couch.

Abstract: The modular jig system may comprise a plurality of carrier jigs and an adapter jig. The plurality of carrier jigs may be operable to support and orient calibration phantoms on a treatment couch within a radiation oncology treatment vault. An individual carrier jig selected from the plurality of carrier jigs may be used to support one calibration phantom at a time. The plurality of carrier jigs may be interconnected to place and orient multiple calibration phantoms. The adapter jig may be operable to position the calibration phantoms at fixed reference locations relative to the treatment couch. The treatment couch may be positioned to image one of the calibration phantoms and the treatment couch may be repositioned such that each of the calibration phantoms may be imaged.

Abstract: An apparatus in a radiation therapy system includes: a base configured to support a first quality assurance phantom at a first position and a second quality assurance phantom at a second position; and at least one coupling element. The at least one coupling element is configured to: mate with at least one indexing feature of a first patient treatment couch of the radiation therapy system; and fix a position of the base relative to the first patient treatment couch.

Abstract: An apparatus in a radiation therapy system includes: a base configured to support a first quality assurance phantom at a first position and a second quality assurance phantom at a second position; and at least one coupling element. The at least one coupling element is configured to: mate with at least one indexing feature of a first patient treatment couch of the radiation therapy system; and fix a position of the base relative to the first patient treatment couch.

Abstract: A method for operating an international combustion engine, the engine also includes a first cylinder, a second cylinder, an exhaust system, and a fuel cell in the exhaust system. The method comprises operating the first cylinder lean to provide air to the fuel cell during at least one condition; and operating the second cylinder rich or stoichiometric to provide torque output and fuel to the fuel cell.

Abstract: A system for a vehicle having an engine with an exhaust comprises a fuel cell coupled in the engine exhaust wherein the fuel cell has an output circuit; a battery coupled with the fuel cell; and a controller receiving a signal indicative of an electric output of the fuel cell output circuit, and adjusting one of the fuel amount and the air amount supplied to the engine in response to said signal to affect air-fuel ratio of the exhaust of the engine.

Abstract: An exhaust emission reduction system of a vehicle having an internal combustion engine with an at least one cylinder coupled to an exhaust system comprises a NOx reduction catalyst disposed in the exhaust system downstream of the engine exhaust system; and a fuel cell disposed in the exhaust system downstream of the NOx reduction catalyst.

Abstract: An emissions control system for a vehicle configured to travel on a road is provided. In one example, a forced modulation of a UEGO is provided when output of a HEGO sensor is unavailable.

Abstract: A method for operating an international combustion engine, the engine also includes a first cylinder, a second cylinder, an exhaust system, and a fuel cell in the exhaust system. The method comprises operating the first cylinder lean to provide air to the fuel cell during at least one condition; and operating the second cylinder rich or stoichiometric to provide torque output and fuel to the fuel cell.

Abstract: A system for a vehicle having an engine with an exhaust comprises a fuel cell coupled in the engine exhaust wherein the fuel cell has an output circuit; a battery coupled with the fuel cell; and a controller receiving a signal indicative of an electric output of the fuel cell output circuit, and adjusting one of the fuel amount and the air amount supplied to the engine in response to said signal to affect air-fuel ratio of the exhaust of the engine.

Abstract: A method for operating an international combustion engine, the engine also includes a first cylinder, a second cylinder, an exhaust system, and a fuel cell in the exhaust system. The method comprises operating the first cylinder lean to provide air to the fuel cell during at least one condition; and operating the second cylinder rich or stoichiometric to provide torque output and fuel to the fuel cell.

Abstract: A system for a vehicle having an engine with an exhaust comprises a fuel cell coupled in the engine exhaust wherein the fuel cell has an output circuit; a battery coupled with the fuel cell; and a controller receiving a signal indicative of an electric output of the fuel cell output circuit, and adjusting one of the fuel amount and the air amount supplied to the engine in response to said signal to affect air-fuel ratio of the exhaust of the engine.

Abstract: An apparatus comprising an internal combustion engine, an exhaust system for conducting exhaust emitted by the engine, and a catalytic device associated with the exhaust system is disclosed, wherein the catalytic device comprises a catalytic conversion portion and a fuel cell portion disposed within an interior of the catalytic device, wherein the fuel cell portion comprises a first electrode and a second electrode configured to be in contact with exhaust gases in the interior of the catalytic device, the first electrode being disposed downstream of the second electrode in a direction of exhaust flow.

Abstract: A method of controlling an internal combustion engine having a fuel vapor purging system and a fuel delivery system including a fuel pump and a fuel pressure sensor for detecting the fuel pressure provided by the fuel pump is disclosed. In one example, the method includes, during a degraded condition of the fuel pressure sensor, adjusting the fuel pump output in response to an operating condition, adjusting at least one of a condition of the fuel vapor purging system and adaptive learning of a characteristic of the fuel delivery system; and further adjusting the fuel pump output in response to an output of an exhaust gas sensor while also adjusting an amount of fuel injected into a cylinder of the engine in response to said output of the exhaust gas sensor.

Abstract: An apparatus comprising an internal combustion engine, an exhaust system for conducting exhaust emitted by the engine, and a catalytic device associated with the exhaust system is disclosed, wherein the catalytic device comprises a catalytic conversion portion and a fuel cell portion.

Abstract: In one example, a system for a vehicle traveling on the road is described. The system includes a first cylinder; a second cylinder; a linear exhaust gas sensor coupled exclusively to said first cylinder; a switching exhaust gas sensor coupled exclusively to said second cylinder; and a controller configured to operate in a first mode with both said first and second cylinders carrying out lean combustion, where fuel injection amounts to each of said first and second cylinder are adjusted based on said linear sensor; said controller further configured to operate in a second mode with both said first and second cylinders carrying out combustion about stoichiometry, where fuel injection amounts to at least one of said first and second cylinder are adjusted based on said switching sensor.

Abstract: A multi-cylinder group engine system operable in at least a first mode and a second mode, where in the first mode a first and second cylinder group combust air and fuel, and where in the second mode at least one of the first and second cylinder group combusts air and fuel and the other one of the first and second cylinder group pumps air without injected fuel, the engine system comprising of a first linear exhaust gas sensor disposed in a first exhaust passage to measure air fuel exhausted from the first cylinder group; a first switching type exhaust gas sensor disposed in a second exhaust passage to measure air-fuel exhausted from the second cylinder group; a second linear exhaust gas sensor disposed downstream of a junction between the first exhaust passage and the second exhaust passage; and a controller configured to validate a reading of the first linear exhaust gas sensor during the first mode of engine operation based on a reading of the second linear exhaust gas sensor when a lean air-fuel ratio is co

Abstract: A system for a vehicle traveling on the road is shown. The system includes a first cylinder; a second cylinder; a linear exhaust gas sensor coupled exclusively to said first cylinder; a switching exhaust gas sensor coupled exclusively to said second cylinder; and a controller configured to perform a decontamination cycle where one of said first cylinder and second cylinder produces a reductant rich exhaust and the other of said first and said second cylinder produces an oxygen rich exhaust, where an air-fuel ratio of one of said first and second cylinder is adjusted in response to said linear sensor.

Abstract: A method of controlling an internal combustion engine having a fuel vapor purging system and a fuel delivery system including a fuel pump and a fuel pressure sensor for detecting the fuel pressure provided by the fuel pump is disclosed. In one example, the method includes, during a degraded condition of the fuel pressure sensor, adjusting the fuel pump output in response to an operating condition, adjusting at least one of a condition of the fuel vapor purging system and adaptive learning of a characteristic of the fuel delivery system; and further adjusting the fuel pump output in response to an output of an exhaust gas sensor while also adjusting an amount of fuel injected into a cylinder of the engine in response to said output of the exhaust gas sensor.

Abstract: A system for an engine of a vehicle traveling on the road, comprising of a first fuel injector coupled to a cylinder of the engine, a second fuel injector coupled to said cylinder of the engine, a compression device for compressing intake air delivered to said cylinder, a fuel tank configured to store a fuel, the fuel tank coupled to the first and second injectors, a fuel vapor purge system for delivering vapors of the fuel to said cylinder of the engine and a controller configured to vary an amount of injection of the fuel from at least one of the first and second fuel injectors as a concentration of said vapors varies, and further to vary said amount of injection based on operation of the compression device.