Abstract: Various methods for controlling a wastegate actuator are provided. In one example, a method comprises adjusting one or more wastegate controller gains responsive to limiting current supplied to a wastegate actuator, the current limited in response to a temperature of the wastegate actuator exceeding a threshold.

Abstract: A VTG cartridge (1, 2) of an exhaust-gas turbocharger (2), with a blade bearing ring (3), and a disk (4), which is spaced apart from the blade bearing ring (3) and together with the latter delimits a hot-gas passage (5). The disk (4) is constructed from at least two layers (6, 7, 6?, 7?), which bear loosely against one another in the assembled state of the disk (4).

Abstract: A method for desulphurizing an exhaust-gas recirculation flow of an internal combustion engine supplied to the internal combustion engine on the fresh-air side includes branching a partial exhaust-gas flow from the exhaust-gas flow of the internal combustion engine. At least one reactant is supplied to the partial exhaust-gas flow that splits to form ammonia, and the thus laden partial exhaust-gas flow is supplied partially, as an exhaust-gas recirculation flow, to the fresh-air side and partially, as an aftertreatment partial flow, to an exhaust-gas aftertreatment system. The flow rate of the exhaust-gas recirculation flow supplied to the fresh-air side and the flow rate of the aftertreatment partial flow supplied to the exhaust gas aftertreatment system are predefined and/or varied by a regulating device as a function of at least one operating parameter that defines the respective operating state of the internal combustion engine.

Abstract: A method and system is provided for a turbocharged multi-cylinder internal combustion engine comprising a two-channel turbine and at least two groups of cylinders, wherein one group of cylinders is switchable responsive to an engine load over a threshold. Exhaust lines of each group of cylinders are arranged in a targeted manner to couple with the turbine such that the switchable group is attached to one channel and the active group is attached to the other channel to reduce the difference in distances that pressure pulses travel, wherein a shut-off element is provided in the channel attached to the switchable group and may be moved to block exhaust flow through the channel when the cylinders are deactivated, thus improving the partial deactivation and turbocharging characteristics of the engine.

Abstract: An ammonia generating device for treating exhaust gases of internal combustion engines, notably of automobile vehicles, includes a reservoir having a body capable of releasing ammonia by desorption and a heating device positioned inside the reservoir to heat the body in the reservoir. The heating device comprises a heat generating element that has an elongated form. The heating device further includes at least one heat transfer feature laid out along an axial direction of the heat generating element and extending in a direction radial to the heat generating element.

Abstract: A method pertaining to a liquid supply system which supplies liquid to a feed device (230) via which liquid is supplied to at least one consumption point (250): Determining presence of air supplied upstream to the feed device (230), and, when presence of air is found, of reducing operating power of the feed device (230) compared with ordinary operation. Also a computer program product containing program code (P) for a computer (200; 210) for implementing the method. Also a device and a motor vehicle (100) which is equipped with the device.

Abstract: Disclosed is an adjustable stationary blade ring of a turbomachine, whose stationary blades are each supported in a bearing body onto which an inner ring, which is divided into two half rings and acts as a seal carrier, is pushed without deformation, viewed in the circumferential direction, as well as a method for assembling a stationary blade ring of this type and a turbomachine having a stationary blade ring of this type.

Abstract: An air gap-insulated exhaust manifold (10) for a supercharged internal combustion engine (1), preferably of a motor vehicle has an engine flange (11) fastening the exhaust manifold to an engine block (2) and a turbine flange (12) fastening the exhaust manifold to a turbine (8) of an exhaust gas turbocharger (7). Two inner pipes (13, 14) lead from an inlet opening, for exhaust gas, adjacent to the engine flange to an outlet opening (18), for exhaust gas, adjacent to the turbine flange. An outer pipe (15) envelopes the two inner pipes, forming an air gap insulation (21), and extends from the engine flange to the turbine flange. A separation partition (16) separates, in the interior space (22) of the outer pipe, two interior spaces (23, 24), in which one each of the two inner pipes is arranged. Reduced wear is achieved with the partition arranged loosely at the turbine flange.

Abstract: An exhaust diagnostic system. The system includes a diesel engine having an exhaust system with a diesel particulate filter (DPF), a diesel oxidation catalyst (DOC), a selective catalytic reduction (SCR) catalyst, a first NOx sensor located upstream of the SCR catalyst and a second NOx sensor located downstream of the SCR catalyst. In addition, an engine control unit (ECU) is in electronic communication with the first NOx sensor and the second NOx sensor. An SCR coordinator can be included and be configured to execute a non-intrusive SCR deNOx efficiency test, an intrusive SCR/DOC deNOx efficiency test and an intrusive DOC non-methane hydrocarbon (NMHC) conversion efficiency test on the exhaust system. As a result of the conversion efficiency tests, a distinction can be made as to whether the SCR catalyst or DOC is failing.

Abstract: A method for operating a wind turbine (10). The wind turbine (10) is operated with variable rotational speed between predeterminable minimum and maximum rotational speeds. A characteristic variable (51) of an oscillation of the wind turbine (10) is detected. The wind turbine (10) includes a tower (14) and a rotor (13). An open-loop or closed-loop control device (36, 50) provides open-loop control or closed-loop control of the rotational speed of the rotor (13) between a minimum rotational speed and a maximum rotational speed during a power-supplying operation of the wind turbine. A sensor (40) detects a characteristic variable (51) of an oscillation of the wind turbine (10) and the minimum rotational speed is changed depending on the characteristic value (51) of the oscillation. The minimum rotational speed is altered depending on the characteristic variable (51) of the oscillation by the open-loop or closed-loop control device (36, 50).

Abstract: An ammonia generating device is delimited by an outer casing that includes a main reservoir and a secondary reservoir. The main reservoir is capable of reloading with ammonia the body in the secondary reservoir. A heater is capable of heating the bodies in each reservoir. A connector connects the main reservoir to the secondary reservoir. The heater comprises first and second heating devices respectively installed inside the main reservoir and the secondary reservoir and operating independently. The main reservoir is thermally decoupled from the secondary reservoir to generate a temperature gradient between both reservoirs.

Abstract: A method for controlling regeneration within an after-treatment component of an engine comprises receiving a signal indicative of whether the engine is in an operating state or a non-operating state and detecting, based on the signal, when the engine has departed an operating state and entered a non-operating state. When the engine has departed an operating state and entered a non-operating state, a regeneration event is initiated. The regeneration event comprises causing a stream of air to flow through the after-treatment component and initiating a flow of fuel into the stream of air.

Abstract: A marine propulsion device and a method of making a marine propulsion device including an internal combustion engine that discharges exhaust gases. The internal combustion engine has first and second castings. A first exhaust flow passage is in the first casting and a second exhaust flow passage is in the second casting. The second exhaust flow passage has a first and second leg that are transversely oriented to each other. A catalyst is disposed in the second exhaust flow passage and configured to treat the exhaust gases. A flow control element is between the first and second flow passages. The flow control element forms a smooth transition that is devoid of edges such that the exhaust gases flow across and are dispersed by the flow control element before being treated by the catalyst.

Abstract: An internal combustion engine with multiple cylinders and injection valves that are provided for the cylinders and that meter fuel also comprises an exhaust gas tract in which an exhaust gas catalytic converter is arranged. A characteristic value (OSC) of an oxygen storage capacity of the exhaust gas catalytic converter is determined. In accordance with the characteristic value (OSC), a heating measure (HM) for heating the exhaust gas catalytic converter is carried out.

Abstract: An apparatus for mitigating fouling within a heat exchanger device includes an internal combustion engine and an external exhaust gas recirculation (EGR) circuit. The internal combustion engine is fluidly coupled to an intake gas manifold upstream of the engine and an exhaust gas manifold downstream of the engine. The EGR circuit is fluidly coupled to the exhaust gas manifold at a first end and is configured to selectively route back exhaust gas flow as EGR flow into the intake gas manifold at a second end. The EGR circuit includes the heat exchanger device for cooling the EGR flow prior to entering the intake manifold and a surface deposit removing device configured to remove surface deposit build-up from within the heat exchanger device when the surface deposit removing device is activated.

Abstract: An exhaust gas purification system is provided with an exhaust gas purification device which is arranged in an exhaust gas route of a common rail type engine, and is structured such that a plurality of renewing modes which burn and remove a particulate matter deposited within the exhaust gas purification device is executed. One of the plurality of renewing modes is an initialization renewing (a forced renewing) mode which supplies a fuel into the exhaust gas purification device by a post injection regardless of a clogged state of the exhaust gas purification device, in the case that an accumulated drive time of the engine becomes equal to or more than a previously set time.

Abstract: A scroll structure of a centrifugal compressor 1 having a spirally formed scroll passage 13. The scroll passage 13 includes: a flat connecting portion A at a flow passage joint 23 where a scroll start and a scroll end of the scroll passage 13 meet, this flat connecting portion having a flat cross-sectional shape with a same height as that of an outlet passage of a diffuser; and a transition part 21 where the flat cross-sectional shape of the flat connecting portion A gradually changes back to a circular cross-sectional shape along a circumferential direction.

Abstract: A housing-side structure of a turbomachine, in particular of a gas turbine, including an in particular segmented jacket ring (16), which carries an abradable lining for radially outer ends of rotor-side moving blades of a moving blade ring, wherein the jacket ring (16) carrying the abradable lining is connected by means of at least one constriction (18) to a stator-side housing part (19), which is radially adjacent to the jacket ring (16) on the outside and the jacket ring is thermally decoupled from said stator-side housing.

Abstract: A cantilever fan including a cantilever blade that is clamped at one end. The fan includes an actuator that applies a periodic force to the blade resulting in periodic deflections of the blade.

Abstract: A method for cooling a dosing unit (250) pertaining to an SCR system for exhaust cleaning, wherein after cessation of exhaust flow, cooling a reducing agent dosing unit (250) by a reducing agent supplied to it. Also running a feed device to supply the coolant reducing agent at reduced power, compared with ordinary operation. A computer program product containing program code (P) for a computer (200; 210) implements a method of the invention. Also an SCR system and a motor vehicle which is equipped with the SCR system are disclosed.