Exhaust manifold for conducting exhaust gas out of an internal combustion engine

US5784882A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Pierre Bonny · Hamburg, DE
• Thorsten Sternal · Moisburg, DE

Key dates

• Filing date: Jul 14, 1997
• Grant date: Jul 28, 1998
• Expiry date: Jul 14, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N2470/10
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

An exhaust manifold for conducting exhaust gas from an internal combustion engine including a collection pipe structure having branches with engine flanges at their ends for mounting to cylinder outlet ports of the engine and an outlet flange at the downstream end of the pipe structure for connection to an exhaust pipe. The collection pipe structure has in the area of the branches a cross-section with different diameters for first and second cross-sectional directions which are normal to each other so as to form a drop-like or oval cross-sectional area which, in a downstream direction, continuously changes until the two diameters are equal providing for a circular shape at the end of the collection pipe structure adjacent the outlet flange.