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:
Sep. 13, 2011
Filed:
Jun. 20, 2008
Martin Blanc, Knittlingen, DE;
Peter Schäfer, Knittlingen, DE;
Gerd Bräuchle, Hüffenhardt, DE;
Bern Autiengesellschaft, Ludwigsburg, DE;
Abstract
The description discloses a glow plug system for a Diesel engine of a motor vehicle having a glow plug (RG, RG) which comprises a positive terminal for connecting a supply voltage (U) and a ground terminal for connecting to a ground potential (GND), a controlling device () for controlling the electric power supplied to the glow plug (RG, RG) in operation, whereby the controlling device () comprises a measurement input (ADC) and a ground input (ADC) in order to determine, in operation, a measured value of the supply voltage (U) in relation to a reference potential (GND') applied to the ground input (ADC). The controlling device () has a test input (ADC) which, in operation, is connected to a test voltage source via a first resistor (R) and to the positive terminal of the glow plug (RG, RG) via a second resistor (R), whereby the controlling device (), in operation, determines a difference of the electric potential of the test input (ADC) and the electric potential (GND′) of the ground input (ADC), determines a deviation of the difference of these potentials from a reference value and, if this deviation is unequal to zero, uses the deviation to correct the measured value of the supply voltage (U) and uses the corrected value of the supply voltage (U) as for controlling the power. Furthermore, the description discloses a controlling device for a glow plug system of this type and a method for controlling the power of a glow plug.