Intake manifold for an internal combustion engine

US6732695B2 · kind B2 · utility

Assignee

• Filterwerk Mann & Hummel GmbH · DE

Inventors

• Herbert Pietrowski · Pleidelsheim, DE
• Thomas Jessberger · Asperg, DE
• Ingo Koch · Hameln, DE
• Helmut Neuschwander · Ludwigsburg, DE
• Eckehard Mandel · Ludwigsburg, DE

Key dates

• Filing date: Feb 4, 2002
• Grant date: May 11, 2004
• Expiry date: Mar 31, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An intake manifold (10) for a multi-cylinder internal combustion engine includes a tubular intake distributor (12) from which a plurality of long intake tubes (13) extend and lead to the individual cylinders. Short intake tubes (14) likewise extend from the intake distributor and open into the respective associated long intake tubes (13). The intake distributor (12) and the long and short intake tubes (13, 14) are formed from a one-piece housing (11) which has a cavity (21) which intersects the short intake tubes (14). In this cavity (21) a control element (15) is installed, which includes flaps (16), flap frames (17), a shaft (19) and a control element frame (18). By moving the shaft (19) either rotationally or translationally, the short intake tubes (14) can be opened or closed. In contrast to arrangements known in the prior art, the control element (15) has no sealing elements which can catch or jam during assembly. Additionally, the arrangement of the flaps (16) on a continuous shaft (19) provides a space-saving apparatus.