Electronic control of a spark plug for an internal combustion engine

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United States of America Patent

PATENT NO 9890757
SERIAL NO

13044059

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Abstract

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An internal-combustion-engine electronic control system according to the present invention is provided with a power switching device that applies or shuts off a primary current of an ignition coil of an internal combustion engine so that at the secondary side of the ignition coil, there is generated a voltage for making an ignition plug of the internal combustion engine produce a spark discharge; and a control unit that turns on or off the power switching device. The internal-combustion-engine electronic control system is characterized in that the control unit is provided with a circuit unit that makes the power switching device softly shut off so as to prevent the ignition plug from producing the spark discharge, and in accordance with the characteristics of the power switching device, the control unit changes the characteristics of the soft shutoff halfway through the shutoff operation.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI ELECTRIC CORPORATIONTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ikeda, Toru Chiyoda-ku, JP 144 950
Mizukami, Hiroshi Chiyoda-ku, JP 74 688
Nobe, Hisanori Chiyoda-ku, JP 16 153
Sera, Yoshiyuki Chiyoda-ku, JP 4 16

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