Abstract: The present invention relates to a hybrid system comprising a supercharging system for an internal combustion engine (1), the hybrid system comprising: a charging device (6) with a turbine (7) connected to a compressor (8) via a compressor shaft (9), the compressor having a high speed shaft (30); a planetary gear (25) coupled between the high speed shaft (30) and an electric motor/generator (20); a clutch (18a); and a power transmission for connecting a crank shaft (4) of the combustion engine (1) to the electric motor/generator (20) via the clutch (18a); wherein the hybrid system further comprises a system control (23) configured to operate the hybrid system in different operating modes according to a control sequence based on one, or a plurality of, input parameters representative of operational properties of the hybrid system.

Abstract: An electrospray device for generating electrospray from a ferrofluid. The electrospray device includes an emitter, an extraction electrode, and a magnet. The emitter is configured to receive a ferrofluidic liquid. The extraction electrode includes an aperture and is positioned a first distance from the emitter. The magnet generates a magnetic field in a first direction toward the emitter. The magnetic field causes Rosensweig instability in the ferrofluidic liquid, and generates a ferrofluidic peak in the ferrofluidic liquid. The magnet is positioned a second distance from the emitter, and the emitter is positioned between the extraction electrode and the magnet. The ferrofluidic liquid is biased at a first electrical potential and the extraction electrode is biased at a second electrical potential. A difference between the first electrical potential and the second electrical potential is sufficient to generate an electric field at the ferrofluidic peak that generates electrospray from the ferrofluidic peak.

Abstract: Methods and systems are provided for a particulate matter sensor. In one example, the sensor may include a concave inlet for admitting exhaust gas from an exhaust passage downstream of a particulate filter into the sensor.

Abstract: A valve actuation system is disclosed for an engine. The valve actuation system may have a variable valve actuator that is configured to engage a rocker arm and hold the valve at an open position regardless of motion of a cam lobe. The variable valve actuator may have a housing forming a chamber, a plunger disposed in the chamber, a control valve movable to control a flow of fluid into the chamber, and a relief valve configured to automatically open and release fluid from the housing when a pressure inside the chamber is below a predetermined pressure. The valve actuation system may further have a controller configured to cycle the control valve prior to start-up of the engine and to selectively move the control valve after start-up.

Abstract: An exhaust gas turbocharger may include a turbine housing and a turbine arranged in the turbine housing. The turbine housing may include at least two exhaust gas channels and a partition separating the at least two exhaust gas channels from one another. A wastegate valve may be arranged such that the at least two exhaust gas channels are connectable to a bypass duct bypassing the turbine. The wastegate valve may include a valve body and a valve seat interacting with the valve body. The wastegate valve may be configured such that at least one of a ram supercharging operation and a pulse supercharging operation is activated depending on a degree of opening of the wastegate valve.

Abstract: An engine assembly includes an engine and a plurality of actuators. The plurality of actuators includes a first turbine serially connected to a second turbine, the first turbine being a relatively high pressure turbine and the second turbine being a relatively low pressure turbine. A controller is configured to transmit respective command signals to the plurality of actuators. The controller is programmed to obtain respective transfer rates for the plurality of actuators based at least partially on an inversion model. The controller is programmed to control an output of the engine by commanding the plurality of actuators to respective operating parameters via the respective command signals. Prior to obtaining the respective transfer rates, the controller is programmed to determine a respective plurality of desired values and respective correction factors for the plurality of actuators.

Abstract: A turbocharger engine includes an engine body and a turbocharger. The turbocharger includes a large turbo unit having a large turbine chamber, a large compressor chamber, and a large turbine shaft extending between the two chambers; and a small turbo unit having a small turbine chamber, a small compressor chamber, and a small turbine shaft extending between the two chambers. The large compressor chamber is disposed upstream of the small compressor chamber in an intake passage. A large turbo axis and a small turbo axis are disposed to extend generally in the same direction as an engine output axis. The large turbo unit is disposed such that the large turbo axis is non-parallel to the engine output axis, and a large-compressor-chamber-side portion of the large turbo axis is closer to the engine output axis than a large-turbine-chamber-side portion thereof in a plan view in an axis direction of the cylinder.

Abstract: A control apparatus for a gas-turbine aeroengine having discriminator that discriminates normality of a low-pressure turbine rotational speed sensor adapted to detect the low-pressure turbine rotational speed and a high-pressure turbine rotational speed controller that establish a first value as an upper limit value of a high-pressure turbine rotational speed and controls the high-pressure turbine rotational speed based on the established upper limit value, and is configured to change the upper limit value to a second value lower than the first value when the low-pressure turbine rotational speed sensor is discriminated not to be normal, whereby engine output (thrust) determined by the low-pressure turbine rotational speed can be controlled to a desired value while restraining the high-pressure turbine rotational speed to not greater than the first value, and low-pressure turbine overspeed at the time of a mishap such as engine fan blade breakage can be reliably prevented.

Abstract: To improve the controllability of the feedback control of the boost pressure, an ECU comprises a valve control part that feedback controls a boost pressure of a turbocharger based on a deviation between a target boost pressure and an actual boost pressure, and a determination part that determines whether or not the exhaust state in an exhaust passage can achieve the target boost pressure, and the feedback control includes at least an integral term, and when the determination part determines the exhaust state cannot achieve the target boost pressure, the valve control part reduces the influence of the deviation on the calculation of integral term compared with that when the exhaust state can achieve the target boost pressure.

Abstract: Various methods and systems are provided for a detecting surge of a turbocharger in an engine system. In one example, system includes a turbocharger including a compressor coupled to a turbine and a controller and sensor system configured to detect a surge event of the turbocharger based on at least one of a rate of change of a pressure measured by sensors downstream of the compressor and a measured rate of change of turbine speed, store operational data associated with the surge event in memory of the controller, and determine a performance of the turbocharger based at least in part on one or more of a cumulative number of detected surge events, a magnitude of detected surge events, or associated operational data.

Abstract: A system for reducing environmentally harmful emissions from an internal combustion engine. The system may incorporate an exhaust after-treatment device. The exhaust after-treatment device may use selective catalytic reduction to remove certain emissions from the exhaust of the engine. Urea solution may be inserted into the exhaust emissions, which is decomposed to ammonia to become a reduction agent for reduction of NOx in the emissions. The engine may be managed by a controller and the exhaust after-treatment device may be managed by another controller. These controllers may be cascaded, or be managed by a third controller that provides hierarchical or coordinated control of engine performance and emissions reduction. The engine and the exhaust after-treatment device may be modeled to aid in designing and building a system for coordinated control of an actual engine and a selective catalytic reduction after-treatment device. The controllers may be predictive model controllers.

Abstract: Disclosed herein is an exhaust heat recovery apparatus for a vehicle, in which a heat accumulator has improved heat accumulation performance and heat exchange performance, whereby an engine can be rapidly warmed up in a cold start so that fuel efficiency can be enhanced, a pollutant emission rate can be reduced, and it is possible to heat a passenger compartment immediately after the engine starts.

Abstract: An oxidation catalyst device is placed so that a central axis of the oxidation catalyst device may be oriented along a right and left direction of a work vehicle; a reducing agent injection device is placed so that a central axis of the reducing agent injection device may be oriented along a front and rear direction of the work vehicle; and a selective catalytic reduction device is placed so that a central axis of the selective catalytic reduction device may be oriented along the front and rear direction of the work vehicle, in which the oxidation catalyst device, the reducing agent injection device, and the selective catalytic reduction device are arranged so as to have a relationship that the central axes thereof become the same in height, and the central axis of the selective catalytic reduction device is placed so as to pass through the oxidation catalyst device.

Abstract: A process for recovering performance of a component of an aftertreatment system. The component includes an inlet and an outlet. The inlet is positioned upstream relative to an exhaust gas flow through the aftertreatment system, and the outlet is positioned downstream relative to the exhaust gas flow through the aftertreatment system. The process includes removing the component from the aftertreatment system. The process also includes regenerating the component, such as subjecting the component to an acid wash and/or heat treating the component. The process further includes reinstalling the component into the aftertreatment system with the inlet positioned downstream relative to the exhaust gas flow through the aftertreatment system and the outlet positioned upstream relative to the exhaust gas flow through the aftertreatment system.

Abstract: A control apparatus for an internal combustion engine is provided. The control apparatus includes a temperature sensor and an electronic control unit. The temperature sensor is configured to detect the temperature of an exhaust gas control apparatus. The electronic control unit is configured to: estimate a sulfuric compound accumulation amount on the exhaust gas control apparatus; and when a specific condition in which the sulfuric compound accumulation amount is equal to or larger than a predetermined accumulation amount and the temperature of the exhaust gas control apparatus is equal to or higher than a predetermined temperature or more is satisfied, control an intake air amount adjuster such that an intake air amount when the specific condition is satisfied is increased as compared to the intake air amount when the specific condition is not satisfied in the same operation state.

Abstract: A plurality of variable nozzles is provided at equal intervals in a circumferential direction so as to surround a turbine wheel between a facing surface of a first nozzle ring and a facing surface of a second nozzle ring. The first nozzle ring is constituted by three nozzle ring segments laminated along the axial direction. In the three nozzle ring segments, a thickness of the nozzle ring segment on a side far from the bearing housing is smaller than a thickness of the nozzle ring segment on a side close to the bearing housing.

Abstract: A method for operating a drive device includes heating a hot air stream with a heating device integrated in a cylinder head of an internal combustion engine of the drive device, wherein the internal combustion engine is connected with an exhaust gas system; mixing the hot air stream upstream of a catalytic converter with a cold fresh air stream for adjusting a defined temperature of the hot air stream; and supplying the hot air stream having the adjusted defined temperature to the catalytic converter in at least one operating state of the internal combustion engine so as to heat the catalytic converter.

Abstract: A flap device for an internal combustion engine includes a flow housing which delimits a flow duct, a shaft which rotates, a flap body attached to the shaft in the flow duct, an actuator which rotates the shaft and thereby the flap body in the flow duct, an actuator housing having the actuator arranged therein, a first bearing seat formed on the flow housing, a second bearing seat formed on the actuator housing, a first bearing arranged in the first bearing seat, and a second bearing arranged in the second bearing seat. The shaft projects into the actuator housing. The shaft is mounted at one side via the first bearing and the second bearing.

Abstract: Systems for thrust reverser link arm connections are described herein. A fitting for a thrust reverser link arm may comprise a base plate configured to be fastened to a proximal surface of an inner fixed structure (IFS), a first wall extending orthogonally from the base plate, a pin extending orthogonally from the first wall, a second wall extending orthogonally from the base plate, a removable member, a first column located between the first wall and the second wall, and a second column located between the first wall and the second wall. The removable member may surround at least a portion of the pin. The removable member may be removed from a radially outward side of the IFS.

Abstract: Methods and systems for operating an engine including an external exhaust gas recirculation (EGR) system are presented. In one non-limiting example, output of a differential pressure sensor and output of an intake manifold pressure sensor are used as a basis for determining whether or not EGR system degradation is present while an engine is operating at conditions other than engine idle conditions.