Patent · US Expired

Air gap-insulated exhaust manifold for internal combustion engines

US7272927B2 · kind B2 · utility

1Cited by

7References

10Claims

0Family size

Assignee

Heinrich Gillet GmbH · DE

Inventors

Markus Geminn · St. Martin, DE
Andreas Steigert · Lambrecht, DE
Margit Roth · Alzey, DE

Key dates

Filing date	Nov 3, 2004
Grant date	Sep 25, 2007
Priority date	—
Expiry date	Jul 10, 2025

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N2450/22
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

An air gap-insulated exhaust manifold for internal combustion engines. The manifold includes a flange with openings for fastening elements and further openings, which align with the cylinder exhaust ports of the internal combustion engine. A gas-tight outer shell is connected to the flange. An inner shell is provided with openings, which align with the cylinder exhaust ports of the internal combustion engine. The outer shell has a trough-shaped lower part and a hood-shaped upper part, which is welded gas-tight to the lower part. The inner shell has a trough-shaped lower part and a hood-shaped upper part. The outer shell is connected to the flange in a gas-tight manner. The inner shell is firmly attached to the outer shell at only one place.

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