Title:
CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2020/085042
Kind Code:
A1
Abstract:
Ignition faults in fuel due to a spark plug are minimized while wear in electrodes of the spark plug are minimized in an internal combustion engine. For this purpose, a control device 1 for an internal combustion engine comprises an ignition control unit that controls conduction of electricity to an ignition coil 300 which imparts electric energy to a spark plug 200 which discharges electricity within a cylinder 150 of an internal combustion engine 100 and ignites fuel. The ignition control unit controls the conduction of electricity to the ignition coil 300 by continuously transmitting a first pulse signal (a pulse signal for corona discharge) to an igniter connected to the ignition coil 300 before dielectric breakdown between the electrodes of the spark plug 200, and continuously transmitting a second pulse signal (a pulse signal for arc discharge) to the igniter after dielectric breakdown between the electrodes of the spark plug 200. At this time, the cycle of the pulse signal for corona discharge is shorter than the cycle of the pulse signal for arc discharge.
Inventors:
OOHATA EIICHIROU (JP)
Application Number:
PCT/JP2019/039248
Publication Date:
April 30, 2020
Filing Date:
October 04, 2019
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02P15/10; F02P3/00
Foreign References:
| JP2012127286A | 2012-07-05 | |||
| JP2015200257A | 2015-11-12 | |||
| JP2002303238A | 2002-10-18 | |||
| JP2018021518A | 2018-02-08 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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