Abstract: Oil sealing unit for a turbocharger used for sealing a passage from a bearing housing to a compressor housing. An end wall serves to delimit an oil expansion chamber in the direction of a compressor wheel. A sealing sleeve is designed for a non-rotating connection with a shaft, which connects the compressor wheel to a turbine wheel. The sealing sleeve is at least partially surrounded by the end wall. An oil guiding means is designed in such a way that an overhang is formed in relation to an oil deflection ring and in a direction radially upward in relation to at least a portion of the oil deflection ring. A sealing gap is formed between the overhang of the oil guiding means and the oil deflection ring.

Abstract: Oil sealing unit for a turbocharger used for sealing a passage from a bearing housing to a compressor housing. An end wall serves to delimit an oil expansion chamber in the direction of a compressor wheel. A sealing sleeve is designed for a non-rotating connection with a shaft, which connects the compressor wheel to a turbine wheel. The sealing sleeve is at least partially surrounded by the end wall. An oil guiding means is designed in such a way that an overhang is formed in relation to an oil deflection ring and in a direction radially upward in relation to at least a portion of the oil deflection ring. A sealing gap is formed between the overhang of the oil guiding means and the oil deflection ring.

Abstract: One embodiment includes a combination including a secondary air pump; and a first control valve constructed and arranged to control flow of air into the secondary air pump from one or more lines connected to the first control valve; and/or a second control valve constructed and arranged to control flow of air from the secondary air pump through one or more lines connected to the second control valve. The combination being particularly useful in a system including a combustion engine.

Abstract: One embodiment includes a combination including a secondary air pump; and a first control valve constructed and arranged to control flow of air into the secondary air pump from one or more lines connected to the first control valve; and/or a second control valve constructed and arranged to control flow of air from the secondary air pump through one or more lines connected to the second control valve. The combination being particularly useful in a system including a combustion engine.