US 12,000,355 B2
Piston for internal combustion engine
Julian Zilker, Biebelried (DE); Michael Scherer, Furth (DE); Olga Seller, Nuremberg (DE); Sven Ungermann, Nuremberg (DE); and Ralf Meske, Schwabach (DE)
Assigned to Federal-Mogul Nurnberg GmbH, Nuremberg (DE)
Appl. No. 17/622,254
Filed by FEDERAL-MOGUL NURNBERG GMBH, Nuremberg (DE)
PCT Filed Jun. 25, 2020, PCT No. PCT/EP2020/067834
§ 371(c)(1), (2) Date Dec. 23, 2021,
PCT Pub. No. WO2020/260466, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 10 2019 209 248.9 (DE), filed on Jun. 26, 2019.
Prior Publication US 2022/0252019 A1, Aug. 11, 2022
Int. Cl. F02B 3/00 (2006.01); F02F 3/02 (2006.01); F02F 3/00 (2006.01)
CPC F02F 3/02 (2013.01) [F02F 2003/0007 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A piston for an internal combustion engine, comprising:
a pair of shaft wall sections 18 for support in a cylinder or cylinder liner;
at least one base support extending in a circumferential direction from at least one of the shaft wall sections, wherein a bottom side of the at least one base support includes a curved segment having a positive length and extending along a path of a helix in the circumferential direction, and wherein the helix has a slope (k) ranging from 1:10 to 1:1 according to the following equation:

OG Complex Work Unit Math
where r is radius of a cylindrical outer surface of the base support and his thread pitch.