Quick oil return cylinder liner
US11840982B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2022 |
| Grant date | Dec 12, 2023 |
| Priority date | — |
| Expiry date | Dec 23, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2011/022
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A quick return oil cylinder liner is disclosed. The cylinder liner includes an elongated cylindrical body having an outer surface and an inner surface defining a liner central axis extending between a first liner axial end and a second liner axial end. The inner surface is configured to form a combustion chamber with a piston and an engine housing. A quick oil return part is arranged on the inner surface of the cylinder liner corresponding to a non-skirt part of the piston. The oil return part is positioned below a position of the inner surface corresponding to an oil blade of an oil ring of the piston when the piston is positioned at a bottom dead center position. The oil return part extends to the second linear axial end and forms at opening at the second liner axial end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.