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:
Feb. 23, 1988
Filed:
May. 15, 1986
Willibald Adam, Ottobrunn, DE;
Webasto-Werk W. Baier GmbH & Co., Gauting, DE;
Abstract
A heating device, particularly an auxiliary vehicle heating device, in which there are disposed, a first temperature sensor at the inlet, and a second temperature sensor at the outlet of the heating device. The outputs of the two temperature sensors are connected with a circuit, so that the operating condition of the heat exchanger of the heating device can be constantly monitored. For the purpose of early detection of a tendency towards overheating of the heating device, appropriately, the temperature differential between the two temperature sensors is determined, and, based upon a predetermined threshold value, the heating device is turned off, if necessary, in order to prevent resultant damage. The outputs of the temperature sensors can also be integrated with a control unit for the performance of control functions and, based upon different switch points, control operation of the vehicle blower, the heating output, and/or the heat exchanger temperature.