Lubrication oil supply for crankshaft
US7152569B2 · kind B2 · utility
6Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2004 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Mar 1, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/22
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine crankshaft includes a split crankshaft journal that includes offset connecting rod journals for two connecting rods. Oil supply systems disposed on opposite axial sides of the crankshaft journal each lubricate a corresponding one of the connecting rod journals. The oil supply systems are either axial or peripheral oil supply systems that do not require oil to be supplied to the crankshaft through the main crankcase bearings. Consequently, the oil supply systems sufficiently lubricate each connecting rod journal without requiring weakening holes or grooves in the main crankcase bearings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.