Title:
IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2014/057592
Kind Code:
A1
Abstract:
Provided is an ignition device for an internal combustion engine in which a secondary voltage generated during conduction of a primary current is suppressed, and an ion current is detected to control overlapping discharge. When a primary current is conducted to an ignition coil to generate a first secondary voltage, an overlapping time controller (40a) reduces the first secondary voltage by controlling and superimposing a DC-AC booster circuit (10a) and a voltage doubler circuit, and outputs, to a secondary coil, a first high voltage for preventing a discharge spark from occurring in a spark plug (60). When the primary current of the ignition coil is blocked and a second secondary voltage is generated, the overlapping time controller (40a) controls the DC-AC booster circuit (10a) and the voltage doubler circuit, superimposes the circuits with the second secondary voltage, and outputs, to a secondary coil, a second high voltage for inducing overlapping discharge in the spark plug (60).
Inventors:
UCHISE YOSHIFUMI (JP)
Application Number:
PCT/JP2012/077014
Publication Date:
April 17, 2014
Filing Date:
October 12, 2012
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS HANSHIN LTD (JP)
UCHISE YOSHIFUMI (JP)
UCHISE YOSHIFUMI (JP)
International Classes:
F02P3/00; F02P17/12
Foreign References:
| JPH11159428A | 1999-06-15 | |||
| JPH10231770A | 1998-09-02 | |||
| JP2000240542A | 2000-09-05 | |||
| JP2012145044A | 2012-08-02 |
Attorney, Agent or Firm:
FUKUDA Kenzo et al. (JP)
Kenzo Fukuda (JP)
Kenzo Fukuda (JP)
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