Abstract: A centrifugal compressor impeller is disclosed for a charging device of an internal combustion engine. The impeller comprises a hub, a number of full blades arranged on the hub and being spaced in a circumferential direction of the impeller, and one splitter blade arranged between a pressure side of a first full blade and a suction side of a second full blade of the number of full blades. A leading edge of the splitter blade is arranged closer to the pressure side of the first full blade than the suction side of the second full blade. The present disclosure further relates to a charging device, an internal combustion engine, and a vehicle.

Abstract: The present invention relates to a turbine arrangement driven by exhaust gases from a combustion engine. The turbine arrangement comprises a turbine housing, a turbine wheel rotatably arranged in the turbine housing, a first volute section defining a curved flow passage extending about 360° around the periphery of the turbine wheel, and an inner radial passage directing exhaust gases radially inwardly from the flow passage into a swept area of the turbine wheel. The curved flow passage has a cross section area decreasing continuously in the flow direction of the exhaust gases from an initial area at an initial angular position of the curved flow passage to an end angular position. The flow area decreases continuously with a successively reduced value from the initial angular position to an angular position located at least 270° from the initial angular position.

Abstract: The present invention relates to a turbine arrangement driven by exhaust gases from a combustion engine. The turbine arrangement comprises a turbine housing, a turbine wheel rotatably arranged in the turbine housing, a first volute section defining a curved flow passage extending about 360° around the periphery of the turbine wheel, and an inner radial passage directing exhaust gases radially inwardly from the flow passage into a swept area of the turbine wheel. The curved flow passage has a cross section area decreasing continuously in the flow direction of the exhaust gases from an initial area at an initial angular position of the curved flow passage to an end angular position. The flow area decreases continuously with a successively reduced value from the initial angular position to an angular position located at least 270° from the initial angular position.

Abstract: A control unit for controlling a supercharging system connected to an internal combustion engine for providing a higher air pressure in the air inlet to the engine, is described, said engine being controlled by an engine control module, said control unit arranged to receive a control signal from the engine control module indicating a desired air inlet pressure to the engine and to receive from the supercharging system a pressure signal representing a current air pressure generated in the supercharging system and to control the function of the supercharging system in dependence of the control signal and the at least one air pressure signal. Other control units, for example, for the batteries, may be added to the system to achieve a distributed control system.

Abstract: In a model jet engine, one or more slide bearings are disposed on one or more turbo shafts. Additionally included are lubricant, a tank system for the latter and an arrangement for supplying lubricant to a respective bearing. The lubricant is incorporated in the propellant of the turbomachine. A propellent-supplying arrangement comprises one or more pump impellers directly coupled to a concerned turbo shaft The tank system is arranged so as to supply propellant to the arrangement without any substantial air/gas element. The arrangement is arranged to operate on the basis of recirculation of the propellent, which can be supplied to the respective slide bearing from the one side of the latter and can be fed back to the tank system from the other side of the slide bearing.