US 12,286,924 B2
Internal combustion engine and lubrication system thereof
Robert Kindl, Gunskirchen (AT); Roland Spatzenegger, Bad Hall (AT); Tomas Andor, Hepberg (DE); Markus Hochmayr, Krenglbach (AT); Thomas Eder, Pettenbach (AT); Branko Arapovic, Wels (AT); Thomas Kritzinger, Frankenburg am Hausruck (AT); and Michael Zunghammer, Gunskirchen (AT)
Assigned to BRP-ROTAX GMBH & CO. KG, Gunskirchen (AT)
Filed by BRP-ROTAX GMBH & CO. KG, Gunskirchen (AT)
Filed on Aug. 17, 2023, as Appl. No. 18/451,443.
Claims priority of provisional application 63/399,328, filed on Aug. 19, 2022.
Prior Publication US 2024/0060434 A1, Feb. 22, 2024
Int. Cl. F01M 1/12 (2006.01); F02B 33/04 (2006.01); F02B 75/00 (2006.01); F02B 75/20 (2006.01); F01L 1/047 (2006.01); F02B 75/18 (2006.01)
CPC F02B 33/04 (2013.01) [F01M 1/12 (2013.01); F02B 75/007 (2013.01); F02B 75/20 (2013.01); F01L 2001/054 (2013.01); F01M 2001/126 (2013.01); F02B 2075/1812 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An internal combustion engine for a vehicle, the engine comprising:
a crankcase;
a crankshaft disposed at least in part in the crankcase;
a cylinder block connected to the crankcase, the cylinder block defining at least one cylinder;
at least one piston operatively connected to the crankshaft and disposed in a corresponding one of the at least one cylinder;
an oil tank defining an oil reservoir configured to contain oil therein;
a pump cavity being defined in the engine, the pump cavity having an open end and a closed end opposite the open end; and
a dry-sump lubrication system comprising a pump module for circulating oil throughout the engine, the pump module being insertable into the pump cavity via the open end, the pump module comprising:
a pump shaft rotatable about a pump shaft axis;
at least one pressure pump mounted to the pump shaft and configured to pump oil from the oil tank; and
at least one scavenge pump mounted to the pump shaft and configured to draw oil from a respective part of the engine, the at least one pressure pump being disposed closer to the closed end than the at least one scavenge pump.