Crankshaft bearing structure of internal combustion engine
US9982710B2 · kind B2 · utility
0Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2014 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Aug 21, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2204/20
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A crankshaft of an in-line, four-cylinder internal combustion engine has five journal portions. The journal portions are each supported by a main bearing unit. Each of the main bearing units includes a cylinder block side bearing part and a bearing cap. The No. 1, No. 2, No. 4 and No. 5 main bearing units employ an iron-based bearing cap, and the No. 3 main bearing unit at the center employs a bearing cap made of an aluminum alloy having a relatively high thermal expansion coefficient. At high temperatures, the bearing clearance of the No. 3 main bearing unit is configured to expand so as to reduce bearing load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.