Patent · US Active

Air duct of an internal combustion engine

US11828253B2 · kind B2 · utility

0Cited by

2References

19Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Michael Metzger · Sunnyvale, US
Ralf Dietz · Waiblingen, DE
Andreas Link · Munich, DE

Key dates

Filing date	Aug 12, 2021
Grant date	Nov 28, 2023
Priority date	—
Expiry date	Dec 5, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG10K11/172
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An air duct of an internal combustion engine has an inner pipe providing a flow channel and a housing with a first housing part and a second housing part, wherein the inner pipe is arranged in the housing. The first housing part and the second housing part enclose a chamber between the inner pipe and the housing. The inner pipe has at least one section with perforations in a wall of the inner pipe, wherein the perforations completely penetrate the wall of the inner pipe. A cylindrical acoustic component at least partially encloses the at least one section of the inner pipe at an outer side of the inner pipe. A wall of the cylindrical acoustic component is provided, at least in sections thereof, with continuous openings. The flow channel is acoustically connected via the perforations and via the continuous openings to the chamber.

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