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:
Apr. 11, 2000
Filed:
Jan. 02, 1998
Applicant:
Inventor:
Markus Ketterer, Stuttgart, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
123634 ; 123644 ;
Abstract
A resonance transducer ignition system for an engine includes a voltage source, a semiconductor circuit-breaker, a resonance capacitance, an energy recovery diode, an open- and closed-loop control unit, a spark plug and an ignition transformer. The resonance capacitance is part of a first resonant circuit. A second resonant circuit is composed of a secondary capacitance. The secondary capacitance is composed of a spark plug capacitance and a stray capacitance. The two resonant circuits are coupled to one another via the ignition transformer, the coupling coefficient, k, being >0.65.