Title:
IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2020/065855
Kind Code:
A1
Abstract:
Provided is an ignition device for an internal combustion engine, with which it is possible to build in an automatic control function for improving the ignitability of a spark plug, without an increase in size and cost. This ignition device 1 for an internal combustion engine raises discharge energy, which is increased by means of a superposed magnetic flux that, by energising an auxiliary primary coil 111b, produces a change in magnetic flux following energisation cut-off of a main ignition coil 111a, said discharge energy being applied to a secondary coil 112. Said ignition device 1 for an internal combustion engine is provided with: an auxiliary primary coil energisation switch means 15 with which it is possible to control the flow rate of a superposed current I1b; and a superposition control means 16 which instructs the auxiliary primary coil energisation switch means 15 as to an increase in the superposed current I1b that is suitable for improving ignitability.
Inventors:
UCHISE YOSHIFUMI (JP)
Application Number:
PCT/JP2018/036053
Publication Date:
April 02, 2020
Filing Date:
September 27, 2018
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS HANSHIN LTD (JP)
International Classes:
F02P15/10; F02P3/00
Domestic Patent References:
| WO2016157541A1 | 2016-10-06 | |||
| WO2017006487A1 | 2017-01-12 | |||
| WO2017060935A1 | 2017-04-13 |
Attorney, Agent or Firm:
FUKUDA Shinichi et al. (JP)
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