Title:
IGNITION CONTROL DEVICE FOR INTERNAL-COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2018/198567
Kind Code:
A1
Abstract:
The objective of the present invention is to provide an ignition control device for an internal-combustion engine capable of predicting the occurrence of knocking resulting from a temperature change in an uncombusted region, and capable of suppressing knocking effectively in a combustion cycle in which knocking has been predicted. To this end, the ignition control device is provided with a knocking occurrence predicting unit 27 which predicts knocking on the basis of a change in a cooling loss of an internal-combustion engine, calculated on the basis of a signal from a cylinder pressure sensor 26 attached to a combustion chamber, and is additionally provided with a knocking control unit 28 which controls an ignition period of the internal-combustion engine on the basis of detected information correlated to the cooling loss detected by the knocking occurrence predicting unit. Knocking resulting from a wall temperature increase accompanying an increase in cooling loss, and a concomitant temperature increase in the uncombusted region is predicted, and retardation control of the ignition period is performed in the combustion cycle in which knocking has been predicted, making it possible for knocking to be effectively suppressed.
Inventors:
ORYOJI KAZUHIRO (JP)
AKAGI YOSHIHIKO (JP)
AKAGI YOSHIHIKO (JP)
Application Number:
PCT/JP2018/010157
Publication Date:
November 01, 2018
Filing Date:
March 15, 2018
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02P5/152; F02D45/00
Foreign References:
| JP2017032492A | 2017-02-09 | |||
| JP2005233114A | 2005-09-02 | |||
| JP2007177723A | 2007-07-12 | |||
| JP2007332934A | 2007-12-27 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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