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. 03, 1985
Filed:
Jan. 22, 1985
Klaus Heyke, Reutlingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
To prevent malfunction due to misfire of a distributorless internal combustion engine (ICE), in which two spark plugs (20, 21; 27, 28) are connected to the same output terminals of the secondary (9) of an ignition coil through respectively reversely polarized diodes (18, 19; 25, 26), the polarity of the output spark pulse at the terminals (17, 24) of the ignition coil determining the identity of the spark plugs which have spark discharges occur thereacross due to the polarization of the serially connected diodes, additional diodes (22, 23; 29, 30) of the high-voltage type are connected in parallel across each of the spark plugs (20, 21; 27, 28) and polarized in reverse polarity with respect to the serially connected diodes, connected to the respective spark plugs, to thereby short-circuit current through the additional diode upon passage of energy by a serially connected diode in reverse direction due to malfunctioning, for example alloying-through or at least partial short-circuiting of the respective serially connected diode.