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:
Apr. 25, 2006
Filed:
Jan. 16, 2004
Hubert Limbrunner, Kirchroth, DE;
Frank Tettenborn, Obertraubling, DE;
Berthold Wolfram, Regensburg, DE;
Hubert Limbrunner, Kirchroth, DE;
Frank Tettenborn, Obertraubling, DE;
Berthold Wolfram, Regensburg, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An internal combustion engine has an intake device (), the intake pipes (to) for the intakes of cylinders of the internal combustion engine and actuators for adjusting the effective pipe lengths of the intake pipes (to) by closing or opening at least one opening of the intake pipes (to) up to a hollow body and at least one actuator for controlling the actuators. Within a first speed range whose upper limit is a first threshold value (N), the actuators are moved into a closed position. For a speed (N), exceeding a first threshold value (N) and being less than a second threshold value (N), the actuators are moved into a leakage position. For a speed exceeding the second threshold value (N), the actuators are moved into an open position.