Port system, especially an induction manifold for an internal combustion engine

US6655348B1 · kind B1 · utility

Assignee

• Filterwerk Mann & Hummel GmbH · DE

Inventors

• Thomas Jessberger · Asperg, DE
• Arthur Klotz · Willow Grove, US
• Rudolf Leipelt · Oberstenfeld, DE
• Stefan Maier · Schwieberdingen, DE
• Holger Paffrath · Ludwigsburg, DE
• Herbert Pietrowski · Pleidelsheim, DE
• Achim Rehmann · Kieselbronn, DE
• Robert Vaculik · Erbach, DE

Key dates

• Filing date: Apr 30, 2001
• Grant date: Dec 2, 2003
• Expiry date: Apr 30, 2021

Classification

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

Abstract

A duct system suitable for use as an intake manifold for an internal combustion engine, including flap valves (13) for selective opening and closing of the ducts. The positions of the valves are continuously adjustable in order to produce a swirl in the flow of combustion air. To achieve this, a high degree of angular precision is required in the positioning of the valves. Intake manifold manufacturing tolerances need to be compensated during assembly of the valves. A valve adjusting mechanism is provided in mechanical couplings (23) of the valve linkage between the position adjusting motor (19) and the flap valves (13).