Patent · US Expired

Air gap insulated exhaust manifold assembly for an internal combustion engine and a method of making same

US6523343B2 · kind B2 · utility

8Cited by

10References

19Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Gerd Durr · Neustadt an der Weinstraße, DE
Johann Kramer · Leonberg, DE
Martin Schlegl · Weingarten, DE
Gerd Tiefenbacher · Esslingen am Neckar, DE

Key dates

Filing date	Nov 1, 2001
Grant date	Feb 25, 2003
Priority date	—
Expiry date	Nov 1, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N2260/10
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

An air gap insulated exhaust manifold for an internal combustion engine of a motor vehicle that has a catalytic converter. The exhaust manifold includes an inner pipe and an outer pipe with a connecting flange on the cylinder head side of the outer pipe. The outer pipe encloses the inner pipe and is spaced therefrom at a distance. A pipe end of the inner pipe protrudes in a guided manner into the cylinder head and only the outer pipe is fastenable to the cylinder head by way of the connecting flange.

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