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:
Nov. 02, 2021
Filed:
Feb. 25, 2019
Eberspächer Climate Control Systems Gmbh & Co. KG, Esslingen, DE;
Walter Blaschke, Deizisau, DE;
Michael Humburg, Göppingen, DE;
Wolfgang Pfister, Esslingen, DE;
Hans Jensen, Dettingen unter Teck, DE;
Eberspächer Climate Control Systems GmbH, Esslingen, DE;
Abstract
A fuel-operated vehicle heater includes a burner area () with a combustion chamber (); a fuel pump (); and a combustion air blower (). A pressure sensor () detects a feed back pressure. An actuating unit () actuates the fuel pump () with a predefined value of a pump operating variable, and actuates the combustion air blower with a predefined value of a blower operating variable. A heater process includes detecting the feed back pressure in case of a feed operating state set during the combustion operation and comparing the detected feed back pressure (P) with an expected feed back pressure (P) for the set feed operating state. If the detected feed back pressure deviates from the expected feed back pressure the pump operating variable is changed such that the feed back pressure changes toward the expected feed pressure and/or essentially corresponds to the expected feed back pressure.