Turbocharger having pneumatic actuator with pilot valve
US5487273A · kind A · utility
18Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1993 |
| Grant date | Jan 30, 1996 |
| Priority date | — |
| Expiry date | Sep 13, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7768
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pneumatic actuator for controlling the wastegate valve of an exhaust gas driven turbocharger includes a pilot piston which is responsive to boost pressure to open only when a desired boost pressure is attained. Accordingly, premature opening of the wastegate valve is avoided because the main actuator piston is maintained at atmospheric pressure until the desired actuating pressure is attained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.