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:
Aug. 22, 2000
Filed:
Dec. 20, 1999
Werner Hennrich, Fellbach, DE;
Bernhard Umlauf, Seefeld, DE;
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Abstract
A vehicle heating system having an additional heating component that can operate independently of the internal combustion engine is provided. When the additional heating component is not operating, the water flows through the coolant circuit loop between the internal combustion engine and the typical heat exchanger in a customary manner. The additional heating component includes a thermostatically actuated switching element which is designed in such a way that with the additional heating component operating, the water heated thereby flows exclusively through the traditional heat exchanger at a temperature below that set by the thermostatically actuated switching element. At a water temperature above that set by the thermostatically actuated switching element, the coolant heated by the additional heating component flows through the traditional heat exchanger and additionally through the internal combustion engine. In order to provide sufficient flow of coolant from the additional heating component through the internal combustion engine a device for creating a vacuum is disposed in the coolant circuit at the point where water flowing through the additional heating component enters the coolant circuit.