Patent · US Expired

Collector device for the primary pipes of an exhaust manifold

US6038855A · kind A · utility

9Cited by

6References

8Claims

0Family size

Assignee

AB Volvo · SE

Inventors

Lars MARKSTRÖM · Göteborg, SE
Lennarth Zander · Mölndal, SE
Erik Olofsson · Göteborg, SE
Olof Norblad · Göteborg, SE

Key dates

Filing date	Feb 13, 1998
Grant date	Mar 21, 2000
Priority date	—
Expiry date	Feb 13, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02B2075/182
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A collector is disclosed for the primary pipes of an exhaust manifold in an internal combustion engine. The collector includes a common cavity and a plurality of primary pipes having a first cross-sectional area at their outlet ends and second cross-sectional area at an upstream location, the first cross-sectional area being less than the second cross-sectional area, with the primary pipes being in direct contact with the common cavity of the collector and further arranged to include a single central pipe with the remainder of the pipes spaced around the central pipe, with the outlet of the central pipe being formed as a conically tapering portion and the outer wall of the central pipe forming part of the inner wall of the remainder of the pipe.

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