Title:
IGNITION TIMING CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2019183769
Kind Code:
A
Abstract:
To provide an ignition timing control device of an internal combustion engine which is improved so as to be capable of suppressing the generation of knocking resulting from a difference of intake air humidity.SOLUTION: A humidity correction factor khmd corresponding to base ignition timing aegrb is calculated (step S104). A memory of an engine electronic control unit may store a characteristic of the humidity correction factor in a form of a map or a calculation expression or the like in advance, and the humidity correction factor khmd may be decided by referring to the stored map. A characteristic corresponding to the base ignition timing aegrb is selected from the map, and the humidity correction factor khmd corresponding to relative humidity is specified on the basis of a humidity value which is acquired in a step S100. In the step A104, a humidity correction term khmd is calculated so that a degree of an increase correction by EGR correction means is decreased as the humidity of intake air becomes high.SELECTED DRAWING: Figure 5
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Inventors:
KANEKO MASATO
HOSOKI TAKAYUKI
SENDA KENJI
HANAI NORIHITO
ITO HISAYUKI
YAMAGUCHI MASAAKI
HOSOKI TAKAYUKI
SENDA KENJI
HANAI NORIHITO
ITO HISAYUKI
YAMAGUCHI MASAAKI
Application Number:
JP2018076941A
Publication Date:
October 24, 2019
Filing Date:
April 12, 2018
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F02P5/152; F02P5/15
Attorney, Agent or Firm:
Hideki Takahashi
Mamoru Takada
Hidekazu Onishi
Mamoru Takada
Hidekazu Onishi