US 12,258,877 B2
Supercharger assembly
Hubert Loimayr, Hartkirchen (AT); Markus Wolfsgruber, Neukirchen bei Altmuenster (AT); Paul Allmann, Linz (AT); Rudolf Kusel, Wels (AT); and Rudolf Tscherne, Buchkirchen (AT)
Assigned to BRP-ROTAX GMBH & CO. KG, Gunskirchen (AT)
Filed by BRP-ROTAX GMBH & CO. KG, Gunskirchen (AT)
Filed on Jan. 24, 2024, as Appl. No. 18/421,033.
Claims priority of provisional application 63/442,136, filed on Jan. 31, 2023.
Prior Publication US 2024/0254895 A1, Aug. 1, 2024
Int. Cl. F01D 25/18 (2006.01); F01D 25/04 (2006.01); F02B 37/00 (2006.01)
CPC F01D 25/18 (2013.01) [F01D 25/04 (2013.01); F02B 37/00 (2013.01); F05D 2220/40 (2013.01); F05D 2260/40 (2013.01); F05D 2260/96 (2013.01); F05D 2260/98 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A supercharger assembly comprising:
a supercharger housing defining an air inlet and an air outlet;
an impeller disposed in the supercharger housing;
an impeller shaft connected to the impeller for driving the impeller;
a driveshaft connected to the impeller shaft for driving the impeller shaft, the driveshaft defining an oil supply passage; and
a torsional damper connected to the driveshaft for driving the driveshaft, the torsional damper being configured for being operatively connected to a crankshaft of an internal combustion engine, the torsional damper comprising:
a driving member configured for being operatively connected to the crankshaft of the internal combustion engine; and
a driven member engaging the driving member, the driven member being connected to the driveshaft,
the driving member and the driven member being rotationally movable relative to each other,
the driving member and the driveshaft being rotationally movable relative to each other,
the driven member being rotationally fixed to the driveshaft,
the driveshaft extending through the driving member,
the oil supply passage being positioned to supply oil to the torsional damper for lubricating the torsional damper; and
a plain bearing disposed radially between the driveshaft and the driving member,
the driveshaft defining another oil supply passage, the other oil supply passage being positioned to supply oil to the plain bearing for lubricating the plain bearing.