Abstract: A radial compressor has an iris diaphragm mechanism for a pressure-charging device of an internal combustion engine. The radial compressor has a bearing assembly, in which a rotor shaft is rotatably mounted, having a compressor impeller arranged in a compressor housing for conjoint rotation on the rotor shaft and having a fresh air supply channel for carrying a fresh air mass flow to the compressor impeller. The iris diaphragm mechanism is upstream of the compressor impeller, allowing variable adjustment of a flow cross section for the fresh air mass flow for admission to the compressor impeller, at least over a partial region. The iris diaphragm mechanism has a plurality of blades, each having at least one first and one second blade section, wherein an offset is formed between the first blade section and the second blade section of the respective blade.

Abstract: A compressor for a supercharging device of an internal combustion engine and a supercharging device are described. The compressor has an iris diaphragm mechanism that has a special drive. The drive includes an adjusting ring as an integral constituent part of an actuator of the drive and is formed as a rotor, which surrounds an air supply channel, of an electric motor. This results in a significantly simplified structural form of the drive.

Abstract: An internal combustion engine having a turbocharger with variability at the compressor inlet, and a turbocharger. An internal combustion engine having a turbocharger, and a turbocharger, are described. A device which both performs a change in the cross section of the compressor inlet and brings about an adjustment of the exhaust gas recirculation rate is arranged in the region of the compressor inlet. As a result, the turbocharger is of space-saving and low-cost construction in the compressor inlet region.

Abstract: A radial compressor has an iris diaphragm mechanism for a pressure-charging device of an internal combustion engine. The radial compressor has a bearing assembly, in which a rotor shaft is rotatably mounted, having a compressor impeller arranged in a compressor housing for conjoint rotation on the rotor shaft and having a fresh air supply channel for carrying a fresh air mass flow to the compressor impeller. The iris diaphragm mechanism is upstream of the compressor impeller, allowing variable adjustment of a flow cross section for the fresh air mass flow for admission to the compressor impeller, at least over a partial region. For this purpose, the iris diaphragm mechanism has multiple lamellae which each have a plate style lamella main body and a pin style actuating element as integral constituent parts of the respective lamella.

Abstract: A turbine housing for a turbocharger of an internal combustion engine includes an annular duct for conducting an exhaust-gas mass flow to a turbine wheel to be disposed in the turbine housing and an exhaust-gas discharge duct for discharging the exhaust-gas mass flow from the turbine housing after impinging on the turbine wheel. An insulating element is respectively disposed in a region of an inner wall of the annular duct and in a region of an inner wall of the exhaust-gas discharge duct. A turbocharger having the turbine housing is also provided.

Abstract: An internal combustion engine having a turbocharger with variability at the compressor inlet, and a turbocharger. An internal combustion engine having a turbocharger, and a turbocharger, are described. A device which both performs a change in the cross section of the compressor inlet and brings about an adjustment of the exhaust gas recirculation rate is arranged in the region of the compressor inlet. As a result, the turbocharger is of space-saving and low-cost construction in the compressor inlet region.

Abstract: A compressor for a supercharging device of an internal combustion engine and a supercharging device are described. The compressor has an iris diaphragm mechanism that has a special drive. The drive includes an adjusting ring as an integral constituent part of an actuator of the drive and is formed as a rotor, which surrounds an air supply channel, of an electric motor. This results in a significantly simplified structural form of the drive.

Abstract: A compressor is disclosed for a charging device of an internal combustion engine. An iris diaphragm mechanism is arranged upstream of the compressor wheel. An actuator is mechanically coupled to an adjusting ring of the iris diaphragm mechanism for transmitting torque of an actuator shaft to the adjusting ring for rotating the adjusting ring. A pivotable coupling pin is arranged eccentrically on the actuator shaft and has a bearing bush which is displaceable along a longitudinal axis of the coupling pin. The bearing bush is mounted between two fingers of an adjusting lever of the adjusting ring so as to be displaceable along the fingers. An outer contact surface of the bearing bush is spherical. Inner contact surfaces of the two fingers are cylindrical to correspond to the spherical outer contact surface of the bearing bush and are in sliding contact with the outer contact surface of the bearing bush.

Abstract: A turbine housing for a turbocharger of an internal combustion engine includes an annular duct for conducting an exhaust-gas mass flow to a turbine wheel to be disposed in the turbine housing and an exhaust-gas discharge duct for discharging the exhaust-gas mass flow from the turbine housing after impinging on the turbine wheel. An insulating element is respectively disposed in a region of an inner wall of the annular duct and in a region of an inner wall of the exhaust-gas discharge duct. A turbocharger having the turbine housing is also provided.

Abstract: A radial compressor has an iris diaphragm mechanism for a pressure-charging device of an internal combustion engine. The radial compressor has a bearing assembly, in which a rotor shaft is rotatably mounted, having a compressor impeller arranged in a compressor housing for conjoint rotation on the rotor shaft and having a fresh air supply channel for carrying a fresh air mass flow to the compressor impeller. The iris diaphragm mechanism is upstream of the compressor impeller, allowing variable adjustment of a flow cross section for the fresh air mass flow for admission to the compressor impeller, at least over a partial region. For this purpose, the iris diaphragm mechanism has multiple lamellae which each have a plate style lamella main body and a pin style actuating element as integral constituent parts of the respective lamella.

Abstract: A compressor for a charging device of an internal combustion engine has a compressor impeller arranged for conjoint rotation on a rotor shaft. An air supply channel conducts an air mass flow to the compressor impeller. An iris diaphragm mechanism is upstream of the compressor impeller and has multiple lamellae to close or to open a diaphragm aperture to vary a flow cross section for the air mass flow for flow against the compressor impeller. A housing at least partially delimits the air supply channel. The iris diaphragm mechanism is located in the housing. An actuator is mechanically coupled to the iris diaphragm mechanism via an opening in the housing for the purpose of actuating the iris diaphragm mechanism, wherein the actuator is arranged on the housing such that the opening is closed off by the actuator.

Abstract: A radial compressor comprising an iris diaphragm mechanism for a charging device of an internal combustion engine. The charging device comprises a radial compressor and a lamella for the iris diaphragm mechanism. The radial compressor has an impeller which is rotationally fixed to a rotatably mounted rotor shaft; and a fresh air supply channel for conducting a fresh air mass flow to the impeller. An iris diaphragm mechanism is arranged upstream of the impeller such that a flow cross-section for the fresh air mass flow for admission to the impeller can be variably adjusted at least over a sub-region. The iris diaphragm mechanism comprises several lamellae, wherein each lamella has a lamella base body with an inner edge portion for delimiting the diaphragm aperture, and the inner edge portion of each lamella has an inner edge, which is blunt-edged, on a side facing away from the impeller.

Abstract: A compressor for an internal combustion engine supercharging device is disclosed, having a compressor housing in which a compressor wheel is arranged on a rotor shaft; and an air-feed channel for conducting an air flow to the compressor wheel. The compressor has a throttle module, having an iris diaphragm mechanism arranged upstream of the compressor wheel, multiple lamellae and which closes or opens a diaphragm aperture by the lamellae, allowing variable adjustment of a cross-section for the air flow to the compressor wheel. A throttle module housing at least partially delimits the air-feed channel and in and/or on which the iris diaphragm mechanism is mounted. An actuator is mounted on the throttle module housing and mechanically coupled to the iris diaphragm mechanism for actuation thereof. The throttle module is formed as a structural unit separate from the compressor housing and flange-mounted on the compressor housing by the throttle module housing.

Abstract: A compressor is disclosed for a charging device of an internal combustion engine. An iris diaphragm mechanism is arranged upstream of the compressor wheel. An actuator is mechanically coupled to an adjusting ring of the iris diaphragm mechanism for transmitting torque of an actuator shaft to the adjusting ring for rotating the adjusting ring. A pivotable coupling pin is arranged eccentrically on the actuator shaft and has a bearing bush which is displaceable along a longitudinal axis of the coupling pin. The bearing bush is mounted between two fingers of an adjusting lever of the adjusting ring so as to be displaceable along the fingers. An outer contact surface of the bearing bush is spherical. Inner contact surfaces of the two fingers are cylindrical to correspond to the spherical outer contact surface of the bearing bush and are in sliding contact with the outer contact surface of the bearing bush.

Abstract: A radial compressor has an iris diaphragm mechanism for a pressure-charging device of an internal combustion engine. The radial compressor has a bearing assembly, in which a rotor shaft is rotatably mounted, having a compressor impeller arranged in a compressor housing for conjoint rotation on the rotor shaft and having a fresh air supply channel for carrying a fresh air mass flow to the compressor impeller. The iris diaphragm mechanism is upstream of the compressor impeller, allowing variable adjustment of a flow cross section for the fresh air mass flow for admission to the compressor impeller, at least over a partial region. The iris diaphragm mechanism has a plurality of blades, each having at least one first and one second blade section, wherein an offset is formed between the first blade section and the second blade section of the respective blade.

Abstract: Various embodiments may include a turbocharger for an internal combustion engine comprising: a bearing housing with a rotor shaft mounted therein and an end shield comprising a housing end face; a turbine wheel on the rotor having a rear side facing the end shield; a turbine housing mechanically fixed to the bearing housing; a spiral path formed by the turbine housing and arranged around the turbine wheel, via which an exhaust-gas flow may supply a flow to the turbine wheel; and a first insulating element arranged in the spiral path providing thermal insulation of the turbine housing from the exhaust-gas flow, the first insulating element covering at least part of a spiral-path inner wall and comprising an integrated bearing housing heat shield providing thermal insulation of the bearing housing from the exhaust-gas flow.

Abstract: An exhaust-gas turbocharger includes a turbine housing and a wastegate which is disposed in the turbine housing. The turbine housing is water-cooled. An electric wastegate actuator is an integrated constituent part of the turbine housing.

Abstract: A turbocharger has a turbine housing and a bearing housing that is connected to the turbine housing. Coolant is supplied to the bearing housing via the turbine housing.

Abstract: A turbocharger has a turbine housing and a bearing housing that is connected to the turbine housing. The turbine housing is formed with a coolant inlet, a cooling jacket in the interior of the turbine housing, and a coolant outlet. The bearing housing has a coolant inlet, a cooling jacket in the interior of the bearing housing, and a coolant outlet. The coolant inlet of the bearing housing is connected to a branched coolant outlet of the turbine housing. The coolant outlet of the bearing housing is connected to a coolant return inlet of the turbine housing.

Abstract: A turbocharger has a turbine housing, a bearing housing, and a compressor housing. The turbine housing has a coolant inlet, a cooling jacket formed in the interior of the turbine housing, and a coolant outlet. The cooling jacket is divided into two subregions.