Abstract: A fault diagnosis method of an exhaust gas post-processing system may include a detection step detecting any one or more of an operating state of a lean NOx trap or a state of an urea tank, a determination step determining whether the state of the lean NOx trap or the urea tank detected at the detection step satisfies a corresponding condition to block monitoring of a purification efficiency of the exhaust gas post-processing system, and a blocking step blocking the monitoring of the purification efficiency of the exhaust gas post-processing system when the state of the lean NOx trap or the urea tank at the determination step satisfies the corresponding condition to block the monitoring of the purification efficiency of the exhaust gas post-processing system.

Abstract: A steam turbine plant of one embodiment includes at least one heater configured to change water into steam to produce high pressure steam and low pressure steam having a lower pressure than the high pressure steam, a high pressure turbine including a turbine or turbines connected to each other in series, and having a first inlet to supply the high pressure steam, a second inlet to supply the low pressure steam and located at a downstream of the first inlet, and an exhaust port located at a downstream of the second inlet, the high pressure turbine being configured to be driven by the steam supplied from the first and second inlets, a reheater configured to heat the steam exhausted from the exhaust port, and a reheat turbine configured to be driven by the steam from the reheater.

Abstract: A method for troubleshooting in an SCR system which has a dosing unit (250) for dosing of reducing agent into an engine's exhaust duct (290) upstream of an SCR catalytic converter (270) for reduction of NOx content in an exhaust flow from said engine and a DOC unit (259). The method comprises steps of: determining (s310) NOx content in the exhaust flow downstream of said SCR catalytic converter (270); determining satisfactory operation of said SCR catalytic converter (270); progressively altering the dosage of said reducing agent; determining whether said SCR system can reduce NOx content of the exhaust flow downstream of said SCR catalytic converter to a predetermined extent during altered dosing; using the results of determinations as a basis for deciding whether said DOC unit (259) is faulty or not. Also disclosed is a computer program product having the program code (P) for a computer (200; 210) for implementing the method according to the invention.

Abstract: A system for exhaust gas routing and aftertreatment in a motor vehicle includes a first exhaust gas duct element, which has an inlet opening and an outlet opening, and a second exhaust gas duct element, which has a transfer pipe having a longitudinal axis and having a sleeve surface and a first closed end. An intake opening is provided in the sleeve surface adjacent to the closed end. The transfer pipe projects into the outlet opening and is accommodated in the first exhaust gas duct element by its closed end and the intake opening, so that exhaust gas flowing in through the inlet opening in a first direction can flow through the intake opening and into the transfer pipe and flow—viewed in the direction of the longitudinal axis of the transfer pipe—in the transfer pipe through the outlet opening out of the first exhaust gas duct element.

Abstract: A system for cooling an engine of a marine propulsion system having an engine and having a cylinder block. An exhaust manifold that conveys hot exhaust gases from the engine and a pump that pumps water from a body of water are also present in the system. A water jacket surrounding the exhaust manifold conveys water from the pump along at least one stream of water having a cross sectional area for cooling the hot exhaust gases in the exhaust manifold. At least one portion of the water jacket includes at least one converging passageway including a wall of the water jacket that tapers inwardly to reduce the cross-sectional area of the stream of water as the water circulates in the water jacket. The pumped water typically has entrained air in the form of air pockets. The converging passageway reduces the air pockets present in the water to provide even cooling of the manifold.

Abstract: An exhaust assisted pipe assembly including an outer portion having an opening for receiving dosed reductant from a dosing module and an inner portion disposed within the outer portion. The inner portion defines a main flow path for receiving a first portion of a fluid from an upstream source, and the inner portion and the outer portion cooperatively define a first flow path and a second flow path. The first flow path is configured to direct a second portion of the fluid from the upstream source past the opening for receiving dosed reductant and into the main flow path to increase momentum of the dosed reductant into the main flow path. The second flow path is configured to direct a third portion of the fluid from the upstream source toward the dosed reductant to decrease the momentum of the dosed reductant in the main flow path.

Abstract: A single thermal energy storage tank is used so that costs can be reduced and an installation space can also be reduced compared to a case where two tanks, i.e., a high temperature tank and a low temperature tank are provided. In addition, the single thermal energy storage tank includes a porous block so that passage of molten salt can be more easily performed and flow pressure drop can be reduced. In addition, the porous block is configured by stacking a plurality of unit blocks so that the capacity of the single thermal energy storage tank can be easily adjusted. Furthermore, a plurality of single thermal energy storage tanks are connected in parallel so that the plurality of single thermal energy storage tanks can be selectively used according to an operation load and thus the solar thermal power generation system can easily cope with the operation load.

Abstract: A dosing module for an exhaust aftertreatment system includes an attachment interface for coupling to an exhaust system. The attachment interface includes a heat pipe system that includes a cavity encasing a fluid. The cavity has a heat source portion thermally coupled with a portion of the attachment interface and a heat sink portion thermally coupled with a cooling system. The fluid transfers heat from the heat source portion to the heat sink portion.

Abstract: An assembly and method for reducing nitrogen oxides, carbon monoxide, hydrocarbons and hydrogen gas in exhausts of internal combustion engines and simultaneously generating electrical power, wherein the exhaust is acted upon in a first stage catalytic converter and is at least in part passed through a thermoelectric generator for production of electrical power. The exhausts are thereafter directed to a second stage catalytic converter.

Abstract: A delivery unit for delivering a liquid additive in a motor vehicle, includes at least one temperature sensor for contactlessly measuring a temperature at least at one measurement point in the delivery unit. The temperature sensor and the measurement point have a spacing therebetween and a radiation channel which is free from fixtures is provided between the temperature sensor and the measurement point. A method for checking the operating state of a delivery unit and a motor vehicle having a delivery unit are also provided.

Abstract: An exhaust-gas aftertreatment system including an exhaust-gas module which has an inlet section and an outlet section. The exhaust-gas aftertreatment system has at least one sensor fastening device which comprises at least two, preferably at least three, sensor fastening means that are angularly spaced apart from one another.

Abstract: Systems, methods, and apparatuses are provided for determining an SCR component sulfur value, determining whether the SCR component sulfur value exceeds a sulfur regeneration threshold and increasing an engine NO amount incident to an SCR catalyst in response to the SCR component sulfur value exceeding the sulfur regeneration threshold.

Abstract: A device includes a pipeline section for an exhaust gas flow. The pipeline section has an inlet end, an outlet end, a rectilinear section and a protuberance having an opening for installing a metering device for a liquid additive (in particular urea/water solution) in the rectilinear section. The protuberance has a height and an extent and the extent is at least twice as large as the height. At least one respective disk-shaped honeycomb body is disposed at each of the inlet end and the outlet end. A central axis of the opening is oriented toward one of the disk-shaped honeycomb bodies. A motor vehicle having the device is also provided.

Abstract: Catalyst compositions suitable for use in the exhaust gas recycle stream of an internal combustion engine are provided. Such catalyst compositions typically provide significant amounts of methane in addition to syngas. A reformer incorporating such a catalyst for use in an exhaust gas recycle portion of an internal combustion engine powertrain is described. A powertrain incorporating such a reformer, a method of increasing the octane rating of an exhaust gas recycle stream, and a method of operating an internal combustion engine using methane-assisted combustion are also described.

Abstract: In an internal combustion engine, a hydrocarbon feed valve and an exhaust purification catalyst are arranged in an engine exhaust passage. A first NOX removal method which reduces NOX contained in an exhaust gas by a reducing intermediate which is generated by injecting hydrocarbons from the hydrocarbon feed valve within a predetermined range of period and a second NOX removal method in which an air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst is made rich by a period which is longer than this predetermined range are used. The switching temperatures ST and ST0 of the exhaust purification catalyst at which temperature an NOX removal method is switched from the second NOX removal method to the first NOX removal method, are made lower if the amount of NOX in the exhaust gas flowing into the exhaust purification catalyst increases.

Abstract: A liquid cooled reduction unit includes a diesel exhaust fluid (DEF) injection valve. The valve includes an end portion extending to a distal end. The valve is configured to receive a DEF and force the DEF to exit at the distal end such that the DEF is then directed and applied to an exhaust stream of a vehicle engine. A coolant jacket is selectively filled with a coolant and has an outer side and an inner side. The inner side of the jacket faces a length of the end portion and is separated from the length of the end portion by an air gap.

Abstract: A heat exchange device with combined functions in vehicles includes: a heat exchanger configured to be installed in an exhaust path of an engine and connected to a coolant heat exchanger circuit and an oil heat exchanger circuit; a bypass path configured to be connected to bypass the heat exchanger in the exhaust path; a recirculation path configured to be branched from the exhaust path to be connected to an intake system of the engine; a first control valve configured to control a flow path of exhaust gas between the exhaust path and the bypass path; a second control valve configured to control a flow path of the exhaust gas between the exhaust path and the recirculation path; and a third control valve configured to control the flow path of the exhaust gas between the bypass path and the recirculation path.

Abstract: A straight-flow exhaust purification catalyst (13) and a hydrocarbon supply valve (15) are arranged in the engine exhaust passage of an internal combustion engine. A region which is a limited portion of the upstream-side end-surface peripheral part of the exhaust gas purification catalyst (13), where there is a possibility of clogging due to deposition of fine particles in the exhaust gas, is predicted to be a fine particle deposition region, and an air-fuel ratio sensor (23) is arranged within an exhaust gas circulation region, which is downstream from the downstream-side end-surface peripheral part of the exhaust purification catalyst (13) and is downstream from the fine particle deposition region when viewed along the longitudinal axis of the exhaust purification catalyst.

Abstract: An exhaust device of a multi-cylinder engine which controls local introduction of exhaust gas to a catalyst device and a variation between cylinders of introduction positions of the exhaust gas to the catalyst device is provided. The exhaust device is arranged so that the cylinders extend in a vehicle width direction at a vehicle front part, and an exhaust line is arranged so as to extend rearward from a rear of the engine, wherein, in sequence from an upstream side of an exhaust gas flow, four independent exhaust pipes corresponding to the cylinders, collecting pipes which collect all independent exhaust pipes, and the catalyst device are provided. The single exhaust pipe includes two bending parts and a downstream part thereof is connected so that the exhaust gas is introduced from a direction that is diagonally lateral to an inlet part of the catalyst device.

Abstract: A method for operating a metering device for a liquid additive includes providing the metering device with at least one pump having a movable pump element carrying out pumping movements to pump the liquid additive and at least one injector connected through a pressure line to a pressure side of the pump and being opened to meter the liquid additive. The injector is opened in a step a). In a step b), the liquid additive is then metered and the pumping movements are counted during metering. In a step c), the injector is then closed. In a step d), the number of pumping movements ascertained in step b) are then compared with the opening time of the injector between step a) and step c) in order to carry out a diagnosis of the operation of the metering device. A metering device and a motor vehicle are also provided.