Exhaust gas manifold for an internal combustion engine and method of making such exhaust gas manifold

US5689954A · kind A · utility

Assignee

• Mercedes-Benz A.G. · DE

Inventors

• Henning Blocker · Seevetal, DE
• Pierre Bonny · Hamburg, DE
• Thomas Hulsberg · Schwäbisch Hall, DE
• Ralf Punjer · Hamburg, DE

Key dates

• Filing date: Mar 15, 1996
• Grant date: Nov 25, 1997
• Expiry date: Mar 15, 2016

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N13/1883
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

An exhaust manifold for an internal combustion engine with at least two cylinders includes at least two adjacent connection branches which are interconnected by collection pipe sections having an expansion compensating bellows for accommodating differential thermal expansion therebetween and a gas flow guide pipe structure which extends into the bellows. At least one of the collection pipe sections comprises a multi-layered pipe wall with which the expansion compensating bellows is integrally formed.