Invention Grant
- Patent Title: Ignition device for internal combustion engine
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Application No.: US17412785Application Date: 2021-08-26
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Publication No.: US11891972B2Publication Date: 2024-02-06
- Inventor: Keiko Miyake , Takashi Ohno , Kanechiyo Terada
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Agency: Nixon & Vanderhye P.C.
- Priority: JP 19034821 2019.02.27
- Main IPC: F02P3/04
- IPC: F02P3/04 ; H01T15/00

Abstract:
An ignition device for an internal combustion engine includes: an ignition plug; a primary coil; a secondary coil magnetically linked to the primary coil and connected to the ignition plug; a main ignition circuit causing a spark discharge to occur in the ignition plug; an energy supply circuit that supplies and stops electrical energy to the predetermined winding of the primary coil to accordingly cause the spark discharge to continue; a recirculation circuit that permits and prohibits current recirculation through a recirculation path including the predetermined winding; and a controller configured to: control the main ignition circuit, and determine a start time of a permission of the current recirculation by the recirculation circuit using, as a trigger, the interruption signal which causes the main ignition circuit to interrupt the current through the primary coil, and end the permission after a predetermined time period has elapsed since the start time.
Public/Granted literature
- US20210388805A1 IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINE Public/Granted day:2021-12-16
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