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:
Sep. 24, 1991
Filed:
Oct. 23, 1990
Otto Knittel, Soest., DE;
Hella KG Hueck & Co., , DE;
Abstract
According to a process of this invention for regulating an interior temperature of a motor vehicle, a nominal temperature is set, an interior space temperature and an exterior temperature are measured, a motor (M) is synchronously controlled for positioning an adjustable control member (L) which influences the amount of heat fed to an interior space (IR), a first cyclical signal is produced which is applied to a second terminal (B2) of the motor and which influences the creation of a second cyclical signal for driving the motor via a comparator (K), a difference signal is produced from the nominal temperature, the interior space temperature, the exterior temperature, and a position signal which with the comparator produce a third cyclical signal from the second cyclical signal and the difference signal that controls the motor via a first terminal (B1) so that an effective motor current corresponds to a difference between the first cyclical signal and the third cyclical signal.