Global Patent Index - EP 0623739 B1

EP 0623739 B1 19951220 - Manifold

Title (en)

Manifold

Title (de)

Rohrkrümmer

Title (fr)

Collecteur

Publication

EP 0623739 B1 19951220 (DE)

Application

EP 94102305 A 19940216

Priority

DE 4314470 A 19930503

Abstract (en)

[origin: EP0623739A1] The invention relates to a manifold (double manifold 1) for internal combustion engines with a tubular body (2, 3) produced by a metal forming process. Its open end can be connected to apertures (4 to 7) of a flange (8) on the engine-side. The wall of the tubular body has a collecting aperture, which faces a flange (11) on the exhaust side. In order to increase the fatigue strength of manifolds of this type, it is proposed to manufacture their tubular bodies (2, 3) in one part with different wall thickness by means of internal high pressure metal forming. At the same time, a pipe union leading from the collecting aperture to the aperture of the flange (9, 10) on the exhaust side is directly formed on. <IMAGE>

IPC 1-7

F01N 7/10; F01N 7/18; B21D 26/02

IPC 8 full level

B21D 26/02 (2006.01); B21D 26/055 (2011.01); F01N 13/10 (2010.01); F01N 13/18 (2010.01)

CPC (source: EP)

B21D 26/055 (2013.01); F01N 13/10 (2013.01); F01N 13/18 (2013.01); F01N 13/1883 (2013.01)

Designated contracting state (EPC)

DE ES FR GB IT

DOCDB simple family (publication)

EP 0623739 A1 19941109; EP 0623739 B1 19951220; DE 59400065 D1 19960201; ES 2081722 T3 19960316

DOCDB simple family (application)

EP 94102305 A 19940216; DE 59400065 T 19940216; ES 94102305 T 19940216