Bearing structure of turbocharger
US9400012B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 12, 2012 |
| Grant date | Jul 26, 2016 |
| Priority date | — |
| Expiry date | Aug 11, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C33/74
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A turbocharger is provided with a rotor shaft and a semi-floating bearing arranged in a bearing chamber and rotatably supporting the rotor shaft. The semi-floating bearing has a pair of bearing portions located at two longitudinal ends. A region between the pair of bearing portions in an outer peripheral surface of the semi-floating bearing and an inner peripheral surface of the bearing chamber constitute an outside oil feed chamber to supply a lubricant oil to outer peripheral surfaces of the pair of bearing portions. A groove extending in a circumferential direction is formed in the outer peripheral surface of at least one of the bearing portions. An oil feed passage to supply the lubricant oil to the outside oil feed chamber and a discharge passage opposed to the groove and configured to discharge the lubricant oil in the groove downward are formed in the bearing housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.