Variable turbo supercharger and method of returning oil from hydraulic drive
US8109090B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2007 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Jan 26, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Provided are a variable geometry turbocharger in which a drain pipe from a hydraulic servo drive device can be omitted and in which a member for transmitting power of the hydraulic servo drive device can be efficiently lubricated, and a method of returning oil from the hydraulic servo drive device. The variable geometry turbocharger includes a slide mechanism for changing an opening degree of a nozzle, the hydraulic servo drive device for driving the slide mechanism by hydraulic pressure, and drain flow paths for delivering oil exhausted from the hydraulic servo drive device into an oil return chamber adjacent to a turbocharger body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.