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:
Dec. 09, 1997
Filed:
Feb. 12, 1996
Applicant:
Inventors:
Volker Ernst, Sachsenheim, DE;
Rudolf Leipelt, Marbach, DE;
Assignee:
Filterwerk Mann & Hummel GmbH, Ludwigsburg, DE;
Primary Examiner:
Int. Cl.
CPC ...
F02B / ; F02M / ;
U.S. Cl.
CPC ...
731182 ; 123432 ;
Abstract
An intake system for an internal combustion engine includes first and second inlet passages for each cylinder of the internal combustion engine. The second inlet passage is provided with a butterfly valve arrangement integrated into the flange area of the intake manifold for selectively closing or opening the passage, and a drive unit is provided for operating this valve arrangement depending on the operational state of the internal combustion engine.