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:
Jan. 14, 2014
Filed:
Dec. 04, 2009
Ralf Christmann, Kaiserslautern, DE;
Ralf Christmann, Kaiserslautern, DE;
BorgWarner Inc., Auburn Hills, MI (US);
Abstract
A method for preventing the rupture of a compressor wheel and/or turbine wheel of an exhaust-gas turbocharger of a motor vehicle includes establishing loading limit values (n(G)) for the compressor wheel and/or the turbine wheel in bench tests. The method further includes determining loading variables (n) for the compressor wheel and/or turbine wheel during the operation of the exhaust-gas turbocharger in the motor vehicle. In addition, the method includes processing the determined loading variables (n) in order to establish a loading characteristic value (n(i)) which represents real exhaust-gas turbocharger operation. Further, the method includes comparing the loading limit value (n(G)) with the loading characteristic value (n(i)). The method also includes outputting a warning (W) if the comparison of the loading limit value (n(G)) with the loading characteristic value (n(i)) yields an exceedance of a predefinable safety margin.