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:
Dec. 24, 2024
Filed:
Aug. 30, 2019
Sem Ab, Åmål, SE;
Patrik Alriksson, Åmål, SE;
Jörgen Bengtsson, Backen, SE;
SEM AB, Amal, SE;
Abstract
The invention relates to an improved ignition system for spark ignited combustion engines. According to the invention the voltage over a coil windingP on the primary side of the ignition coil is regulated to a sufficiently low voltage level during timed periods of the ignition cycle, such that at least one function out of three in total, i.e. prevention of premature spark-on-make, or spark suppression after onset of ignition, or improved frequency response between primary and secondary side of the ignition coil after end of ignition, is obtained. When applied in an inductive ignition system a differential amplifier () may be connected over the primary windingP regulating a control switchCS via a drive unit (). The invention is preferably implemented in ignition systems with ion sense circuitryC,R on the secondary side of the ignition coil, and implementing all three functions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile