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:
May. 10, 2005
Filed:
Jul. 18, 2003
Applicants:
Christian Bäcker, Fuerstenfeldbruck, DE;
Werner Höglmaier, Aichach, DE;
Felix Wolf, Augsburg, DE;
Inventors:
Assignee:
Webasto Thermosysteme International GmbH, Stockdorf, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F23N005/00 ;
U.S. Cl.
CPC ...
Abstract
A heater in which, during the glow plug ramp time interval, the amount of energy supplied per unit of time to the glow plug/flame monitor can be successively changed, and a control unit which is operationally coupled to the glow plug/flame monitor. To enable continuous flame monitoring during the starting phase of the heater with the control unit, the resistance value of the glow plug/flame monitor is determined during the glow plug ramp time interval and compared to a threshold value R, and when the threshold value Ris not reached, a flame-out signal is generated.