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. 10, 2012
Filed:
Jun. 30, 2008
Markus Kernwein, Bretten-Büchig, DE;
Jörg Stöckle, Ludwigsburg, DE;
Olaf Toedter, Walzbachtal, DE;
Ganghua Rüan, Stuttgart, DE;
Marc Rottner, Illingen, DE;
Markus Kernwein, Bretten-Büchig, DE;
Jörg Stöckle, Ludwigsburg, DE;
Olaf Toedter, Walzbachtal, DE;
Ganghua Rüan, Stuttgart, DE;
Marc Rottner, Illingen, DE;
BERU Aktiengesellschaft, Ludwigsburg, DE;
Abstract
Herein is described a method for the heating-up of a ceramic glow plug by applying a variable electric voltage to the glow plug. In accordance with the invention it is provided that, starting from a base value, the electric voltage increases in a time-averaged manner superproportional to the elapsed heating-up time. The invention relates also to a glow plug control unit for carrying out of such a method.