ION CURRENT DETECTION DEVICE

PROBLEM TO BE SOLVED: To solve such a problem that, in the case of determining misfire generated in an internal combustion engine from an ion current generated in a cylinder after the combustion of the internal combustion engine, an alternator noise signal causes erroneous determination that the com...

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Bibliographic Details
Main Authors KUSUHARA ISAO, IZUMI MITSUHIRO, MINAMIGUCHI MASAHIRO
Format Patent
LanguageEnglish
Published 21.04.2014
Subjects
BLASTING
COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES
LIGHTING
MECHANICAL ENGINEERING
TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To solve such a problem that, in the case of determining misfire generated in an internal combustion engine from an ion current generated in a cylinder after the combustion of the internal combustion engine, an alternator noise signal causes erroneous determination that the combustion is continued even in determining the misfire after a reduction of an ion waveform.SOLUTION: A second diode is arranged among an ignition plug, a connection part of a first diode, and a secondary coil, and a third diode is arranged among a first Zener diode, a connection part of a capacitor, and the secondary coil. The second diode has an anode terminal connected to the secondary coil, and the third diode has a cathode terminal connected to the secondary coil. The third diode has a capacity component of 10 pF or smaller.
Bibliography:Application Number: JP20120214905