The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 2003
Filed:
Aug. 03, 2001
Erwin Rutschmann, Tiefenbronn, DE;
Armin Schweizer, Ditzingen, DE;
Dr. Ing. h.c.F. Porsche Aktiengesellschaft, Weissach, DE;
Abstract
A suction system has an arrangement for utilizing resonance effects and is suitable for an internal-combustion engine having opposed cylinder banks. The suction system has a resonance container which has boundary walls. On the one hand, the resonance container is connected with the atmosphere and, on the other hand, it is connected with cylinders of the internal-combustion engine, the arrangement being provided in the resonance container as a control device which can vary the resonance cross-section, and the resonance container is connected with a feeding device having separate feeding pipes. For optimizing the torque behavior of the internal-combustion engine, the control device is fixed from the idling to a medium rotational speed range in a first end position and, together with the feeding pipes of the feeding device, forms two guiding channels which supply the cylinders the two cylinder banks with air.