Abstract: The invention relates to a method for the continuous treatment of multiphase fluid flows, in particular during the operation of fuel cells, comprising the following steps: a) providing a multiphase fluid flow comprising a gas phase and a liquid phase, wherein the gas phase comprises a carrier substance and a process substance, wherein the liquid phase comprises the process substance, b) introducing the multiphase fluid flow into a continuously operable rotating separator, c) at least partially separating the liquid phase from the multiphase fluid flow by means of the rotating separator to produce a treated fluid flow comprising a treated gas phase, wherein the treated gas phase comprises the carrier substance and the process substance, wherein the quantitative proportion of the process substance in the treated gas phase is 50% or more of the quantitative proportion of the process substance in the gas phase of the multiphase fluid flow.

Abstract: The invention relates to a method for the continuous treatment of multiphase fluid flows, in particular during the operation of fuel cells, comprising the following steps: a) providing a multiphase fluid flow comprising a gas phase and a liquid phase, wherein the gas phase comprises a carrier substance and a process substance, wherein the liquid phase comprises the process substance, b) introducing the multiphase fluid flow into a continuously operable rotating separator, c) at least partially separating the liquid phase from the multiphase fluid flow by means of the rotating separator to produce a treated fluid flow comprising a treated gas phase, wherein the treated gas phase comprises the carrier substance and the process substance, wherein the quantitative proportion of the process substance in the treated gas phase is 50% or more of the quantitative proportion of the process substance in the gas phase of the multiphase fluid flow.

Abstract: The invention relates to a recovery system (10) for recovering a recirculation flow that exits a fuel cell (102) and contains hydrogen, said recovery system comprising an active centrifugal separator (16, 26) designed to separate liquid water from the recirculation flow.

Abstract: A gas management apparatus and a method for conditioning anode gas of a fuel cell. The apparatus comprises a fluid tank and a water separator that is fluidically connected thereto, a drainage valve being arranged in the upper area and/or above the top side of the fluid tank. During proper operation, gases and liquids, in particular water, are drawn off via said one drainage valve.

Abstract: A method for operating a centrifugal separator associated with a prime mover and/or a working machine. The centrifugal separator comprises at least one rotatably mounted rotor that can be rotated at a variable speed via a drive controlled by a control unit. The method is characterized in that the speed of the rotor is controlled according to the sound emissions of the prime mover and/or according to the sound emissions of the working machine.

Abstract: A method for operating a rotation separator in an internal combustion engine, wherein, after the engine and separator have been switched off, it is determined whether there is a danger of the condensate in the separator freezing to ice because of cold ambient temperatures. If there is danger of ice formation, the separator is started up again by itself, i.e., without the engine being re-started, and is operated at a speed that effectively removes condensate from the rotor of the separator, so as to prevent icing of the separator.

Abstract: A method for operating a centrifugal separator associated with a prime mover and/or a working machine. The centrifugal separator comprises at least one rotatably mounted rotor that can be rotated at a variable speed via a drive controlled by a control unit. The method is characterized in that the speed of the rotor is controlled according to the sound emissions of the prime mover and/or according to the sound emissions of the working machine.

Abstract: A method for operating a rotation separator in an internal combustion engine, wherein, after the engine and separator have been switched off, it is determined whether there is a danger of the condensate in the separator freezing to ice because of cold ambient temperatures. If there is danger of ice formation, the separator is started up again by itself, i.e., without the engine being re-started, and is operated at a speed that effectively removes condensate from the rotor of the separator, so as to prevent icing of the separator.

Abstract: An internal combustion engine having an intake air duct with a compressor, a throttle valve, and a crankcase ventilation device with a ventilation duct connected to a crankcase with a crankcase pressure regulating valve, the ventilation duct divided into a first ventilation duct branch connected to the intake air duct upstream from the compressor, and a second ventilation duct branch connected to the intake air duct downstream from the throttle valve. A pressure difference between the pressure in the crankcase or in the ventilation duct upstream from the crankcase pressure regulating valve on the one hand and the pressure in the ventilation duct downstream from the crankcase pressure regulating valve on the other hand is measured by, for example, a sensor, and an evaluation unit evaluates for a correct or incorrect functioning of the crankcase ventilation device and a corresponding item of information can be outputted.

Abstract: A centrifugal precipitator having a housing and a rotatable driven rotor for precipitating oil mist from crankcase ventilation gas of an internal combustion engine. The housing has an inlet for gas to be deoiled, a deoiled gas outlet and an oil outlet. The housing includes a metallic main element surrounding the rotor and carrying the rotor bearing. A housing bottom is built onto the main element from below. The housing attaches with a flange to a counterflange or module of the engine. The housing flange is formed on the main element and the housing. The oil outlet runs through a first flange part of the housing bottom and this flange part has a circumferential rim. A second flange part of the main element has a collar engaging over part of its periphery behind the rim and can be clamped with the rim in between against the counterflange.

Abstract: A centrifugal precipitator having a housing and a rotatable driven rotor for precipitating oil mist from crankcase ventilation gas of an internal combustion engine. The housing has an inlet for gas to be deoiled, a deoiled gas outlet and an oil outlet. The housing includes a metallic main element surrounding the rotor and carrying the rotor bearing. A housing bottom is built onto the main element from below. The housing attaches with a flange to a counterflange or module of the engine. The housing flange is formed on the main element and the housing. The oil outlet runs through a first flange part of the housing bottom and this flange part has a circumferential rim. A second flange part of the main element has a collar engaging over part of its periphery behind the rim and can be clamped with the rim in between against the counterflange.

Abstract: A centrifugal separator for separating oil mist out of the crankcase vent gas of an internal combustion engine or for separating solid contaminants out of the lubricant oil of an internal combustion engine, wherein the centrifugal separator has a rotationally drivable rotor, a housing which accommodates the rotor and a rotary drive for the rotor, wherein the rotary drive is an electric motor arranged within the housing. The centrifugal separator includes an arrangement for cooling the electric motor.