Two-stage valve assembly for turbocharger
US10626789B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2018 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Apr 1, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A two-stage valve assembly for a turbocharger includes a movable primary valve adapted to open and close a valve seat of the turbocharger. The primary valve has at least one opening extending axially therethrough. The two-stage valve assembly also includes a movable secondary valve coupled to the primary valve to open and close the at least one opening of the primary valve. The two-stage valve assembly further includes a spring disposed between the primary valve and the secondary valve to seat the secondary valve against the primary valve. The secondary valve is adapted to be coupled to a valve arm of the turbocharger such that relative small movement of the valve arm causes the secondary valve to move and open the opening to allow some exhaust gas of the turbocharger to escape through the at least one opening without moving the primary valve relative to the valve seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.