Processes for producing exhaust gas manifolds

US8850705B2 · kind B2 · utility

Assignee

• Heinrich Gillet GmbH · DE

Inventors

• Andreas Steigert · Lambrecht, DE
• Thomas Weidner · Edenkoben, DE
• Georg Reuther · Hochstädt, DE
• Lan Huynh · Neustadt, DE
• Juergen Rickertsen · Lambrecht, DE

Key dates

• Filing date: May 10, 2007
• Grant date: Oct 7, 2014
• Expiry date: Jun 20, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49398
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

A process for producing exhaust gas manifolds is provided, which have a flange for fastening to the cylinder head of an internal combustion engine, manifold pipes for leading off the exhaust gases flowing from the cylinders, and a pipe connector, wherein the pipe connector has openings for the manifold pipes. In accordance with the invention, the pipe connector is designed with reinforced openings. Then the ends of the manifold pipes are introduced into the openings and expanded. In this process, the pipe ends undergo plastic deformation, and the pipes are connected gas-tight.