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. 23, 2008
Filed:
May. 10, 2007
Yusuke Naruse, Tokyo, JP;
Koichi Okamura, Tokyo, JP;
Futoshi Aida, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An ignition device, including: an ignition coil () having a primary coil and a secondary coil; a switching element () for causing a primary current to be conducted through and shut off from the primary coil of the ignition coil; a waveform shaping circuit () for shaping a waveform of an ignition signal transmitted from an outside through a signal line to supply a conduction signal thus obtained to the switching element; ion current detecting means () connected to the secondary coil of the ignition coil, for detecting an ion current flowing through the secondary coil; and ion signal generating means () for outputting an ion signal, which indicates the ion current detected for a predetermined period after the conduction signal of the waveform shaping circuit has been turned off, to the outside through the signal line while invalidating the conduction signal from the waveform shaping circuit.