Patent · US Active

Hybrid valve for attenuation of low frequency noise

US9376947B2 · kind B2 · utility

7Cited by

36References

33Claims

0Family size

Assignee

Faurecia Emissions Control Technologies, USA, LLC · US

Inventors

Kwin Abram · Columbus, US
Joseph Callahan · Greenwood, US
Robin Willats · Columbus, US

Key dates

Filing date	Oct 31, 2012
Grant date	Jun 28, 2016
Priority date	—
Expiry date	Jul 13, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7898
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A hybrid valve assembly for an exhaust system includes an exhaust tube having a bore defining an exhaust flow path. A vane is mounted within the bore and is moveable between an open position and a closed position. A resilient member biases the vane toward the closed position. A valve actuator has an ON position where movement of the vane is actively controlled by the valve actuator and an OFF position where movement of the vane is passively controlled by exhaust gas flow.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.