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. 21, 2001
Filed:
Feb. 14, 2000
Applicant:
Inventor:
Alfons Fisch, Falkenstein, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02P 1/700 ;
U.S. Cl.
CPC ...
F02P 1/700 ;
Abstract
The primary-side voltage profile of an ignition voltage is converted into an analog current through the use of a first regulating circuit, whose output voltage is compared with a first comparison voltage in a first comparator. The output voltage is compared with a second comparison voltage in a second comparator. A diagnostic signal for the ignition switch can be tapped at the output of the first comparator, and a measurement signal for the burning duration can be tapped at the output of the second comparator.