Title:
IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2016/157543
Kind Code:
A1
Abstract:
Provided is an ignition device for an internal combustion engine with which it is possible to maintain stable combustion without increasing the time of electrical discharge of a spark plug. The turning on and off of a main IGBT 14a and a sub IGBT 14b is controlled by a main ignition signal S1 and a sub ignition signal S2 transmitted by an ignition control means 13, whereby a main primary current I1a is interrupted in accordance with the ignition timing of the combustion cycle and a main discharge voltage is generated on the secondary side of a main ignition coil 11, a sub primary current I1b is interrupted in the same time period whereby a sub discharge voltage is generated on the secondary side of a sub ignition coil 12, and the sub discharge voltage is superimposed on the main discharge voltage, whereby the dielectric breakdown voltage at the start of discharge of a spark plug 2 is increased, a high voltage is applied to the discharge gap of the spark plug 2 during the initial stage of flame kernel formation in the combustion chamber, strong flame kernels are generated, combustion speed is increased, and ignitability and combustion stability are improved.
Inventors:
UCHISE YOSHIFUMI (JP)
OGURA MITSUHIRO (JP)
OGURA MITSUHIRO (JP)
Application Number:
PCT/JP2015/060899
Publication Date:
October 06, 2016
Filing Date:
April 01, 2015
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS HANSHIN LTD (JP)
International Classes:
F02P3/00
Foreign References:
| JPH0868372A | 1996-03-12 | |||
| JPS61164072A | 1986-07-24 | |||
| JP2012140924A | 2012-07-26 | |||
| JPS60252167A | 1985-12-12 | |||
| JPH11159428A | 1999-06-15 | |||
| JP3061540U | 1999-09-24 |
Attorney, Agent or Firm:
FUKUDA, Kenzo et al. (JP)
Kenzo Fukuda (JP)
Kenzo Fukuda (JP)
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