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. 14, 2015
Filed:
Apr. 25, 2012
Applicant:
Peter Schaefer, Knittlingen, DE;
Inventor:
Peter Schaefer, Knittlingen, DE;
Assignee:
BorgWarner BERU Systems GmbH, Ludwigsburg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 27/08 (2006.01); G01R 27/14 (2006.01); F02P 19/02 (2006.01); F02D 35/02 (2006.01);
U.S. Cl.
CPC ...
G01R 27/14 (2013.01); F02D 35/025 (2013.01); F02P 19/025 (2013.01);
Abstract
The invention relates to a method for measuring the electrical resistance of a glow plug, wherein a test current is set by closed-loop control to a constant value using a constant-current source, and is directed through the plug. A value of the electrical resistance of the glow plug is determined by evaluating a feedback signal of the constant-current source.