Title:
IGNITOR OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2019105228
Kind Code:
A
Abstract:
To suppress a short circuit of spark discharge.SOLUTION: An ignitor 100 of an internal combustion engine predicts an approach of a spark discharge path by detecting the inductance of the spark discharge path, and controls an ignition current so as to expand the spark discharge path when the approach of the spark discharge path is predicted. When the approach of the spark discharge path is predicted, an ignition current is increased. When the approach of the spark discharge path is predicted, electrical energy is supplied to the spark discharge path. By detecting the inductance of the spark discharge path, the approach of the spark discharge path is predicted. A high-frequency superimposition circuit for superimposing and applying a high-frequency signal to the spark discharge path, and a detection circuit for detecting the inductance of the spark discharge path from a phase difference between a voltage and a current of the high-frequency signal are arranged. The high-frequency signal is formed by repeating a pulse signal. The high-frequency signal is a random signal.SELECTED DRAWING: Figure 1
Inventors:
KINOSHITA MASAO
FUYUGASHIRA TAKAYUKI
MASUDA RYO
SAYAMA SHOGO
SUGIURA AKIMITSU
FUYUGASHIRA TAKAYUKI
MASUDA RYO
SAYAMA SHOGO
SUGIURA AKIMITSU
Application Number:
JP2017238517A
Publication Date:
June 27, 2019
Filing Date:
December 13, 2017
Export Citation:
Assignee:
TOYOTA CENTRAL RES & DEV
DENSO CORP
DENSO CORP
International Classes:
F02P3/00; F02P15/10; F02P17/12
Domestic Patent References:
| JP2016217189A | 2016-12-22 | |||
| JP2013007351A | 2013-01-10 | |||
| JP2014224493A | 2014-12-04 | |||
| JP2015063931A | 2015-04-09 |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office