Minimizing oil leakage from rocking journal bearings of two-stroke cycle engines
US9581187B2 · kind B2 · utility
3Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2015 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Aug 26, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/22
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rocking journal bearing is provided in a piston coupling mechanism of a two-stroke cycle engine. The bearing includes a sleeve and a wristpin constructed with two sets of eccentrically-disposed bearing surfaces which alternate in accepting a compressive load during an operational cycle of the bearing. The sleeve includes a network of grooves to transport oil to the bearing surfaces. Lubricating oil flow through the bearing is minimized by limiting provision of pressurized oil from the wristpin to the network of grooves to portions of the cycle when one or the other of the sets of bearing surfaces receives the compressive load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.