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:
Jul. 23, 2002
Filed:
Aug. 02, 1999
Applicant:
Inventors:
Lothar Puettmann, Weissach, DE;
Walter Gollin, Sachsenheim, DE;
Bernhard Eisele, Ditzingen, DE;
Markus Ketterer, Stuttgart, DE;
Hubert Bischof, Vaihingen/Enz, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02P 1/700 ;
U.S. Cl.
CPC ...
F02P 1/700 ;
Abstract
An inductive ignition apparatus for a combustion engine includes a measurement device for ascertaining the ionization current at the spark plug of each cylinder, and includes for each spark plug an ignition coil device which forms the ignition high voltage, operates on the transformer principle, and has a primary and a secondary winding, and through whose secondary winding the ionization current flows. A switch is provided which short-circuits the primary winding for the duration of the ionization current measurement.