US 12,203,406 B2
Supercharged internal combustion engine
Craig N. Hansen, Sioux Falls, SD (US); and Paul C. Cross, Plymouth, MN (US)
Filed by HANSEN ENGINE CORPORATION, Minnetonka, MN (US)
Filed on Mar. 8, 2024, as Appl. No. 18/600,265.
Application 18/600,265 is a continuation of application No. PCT/US2022/043143, filed on Sep. 9, 2022.
Claims priority of provisional application 63/242,984, filed on Sep. 10, 2021.
Prior Publication US 2024/0295189 A1, Sep. 5, 2024
Int. Cl. F02B 33/36 (2006.01); F04D 17/10 (2006.01); F04D 29/28 (2006.01)
CPC F02B 33/36 (2013.01) [F04D 17/10 (2013.01); F04D 29/284 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A supercharged internal combustion engine comprising:
an internal combustion engine having at least one combustion chamber for accommodating an air mass and fuel,
a supercharger operable to supply varying amounts of an air mass to the internal combustion engine in response to varying power requirements of the internal combustion engine,
a power transmission drivably connecting the supercharger to the internal combustion engine for operating the supercharger in response to varying speed of the internal combustion engine,
said supercharger including
a housing having an internal chamber,
a male rotor rotatably located in the internal chamber of the housing,
a female rotor rotatably located in the internal chamber of the housing,
said male rotor having helical vanes, said helical vanes having proximal ends and distal ends, and
passages in the proximal ends of the vanes of the male rotor for venting an air mass from adjacent the male rotor.