Patent · US Active

Device and method for manipulating the exhaust outlet noise of a motor vehicle

US8905187B2 · kind B2 · utility

2Cited by

6References

12Claims

0Family size

Assignees

Dr. Ing. h.c. F. Porsche AG · DE
Technofirst · FR

Inventors

Juergen Schorn · Rutesheim, DE
Christian Carme · Marseilles, FR
Daniel Maguire · Burlington, US

Key dates

Filing date	Sep 9, 2013
Grant date	Dec 9, 2014
Priority date	—
Expiry date	Sep 9, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A device for manipulating the exhaust outlet noise of a motor vehicle, having an exhaust flap which can be positioned in an exhaust pipe and which can be displaced in oscillatory fashion about an exhaust flap basic position in a defined angle range about the exhaust flap basic position in order to manipulate the exhaust outlet noise, wherein the exhaust flap basic position can be actively adjusted as a function of an engine rotational speed and/or an engine load, and wherein the angle range can be actively adjusted as a function of a frequency to be eliminated or attenuated, or a frequency to be generated or enhanced, of the exhaust outlet noise.

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