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. 30, 2002
Filed:
Feb. 16, 2001
Applicant:
Inventors:
Ulrich Koelle, Schwieberdingen, DE;
Armin Lussman, Stuttgart, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 3/344 ;
U.S. Cl.
CPC ...
F02B 3/344 ;
Abstract
A device for limiting the supercharger speed which makes do without a speed sensor or an atmospheric pressure sensor has a bandpass filter which filters out a spectral component from the output signal of a boost pressure sensor arranged in the induction pipe of the engine, the spectral component appearing in the signal spectrum of the boost pressure sensor when the air column in the induction pipe is set into a vibration which develops when the compressor of the turbocharger rotates at the maximum permissible speed.