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:
Oct. 10, 1995
Filed:
Mar. 31, 1994
Josef Appel, Gauting, DE;
Webasto Thermosysteme GmbH, Stockdorf, DE;
Abstract
A motor vehicle heating device which is operable independent of an engine of the motor vehicle and has a burner, a pump or other fuel delivery device for supplying fuel to the burner and an electric motor driven blower by which combustion air is delivered to the burner. In contrast to conventional heating devices in which the fuel-air ratio is set and corrected via a mechanically adjustable bypass screw on the combustion air blower, according to a preferred embodiment of the invention, a correction value is sent to a control device which contains a nonvolatile data storage and a microprocessor; the correction value is stored in the data storage and changes the output signals of the control device to the fuel feed means and/or to the combustion air blower. Thus, adjustment and correction are easily enabled via an electronic change of the speed or cycle frequency of these assemblies, so that mechanical adjustment devices can be omitted.