Title:
CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2018017169
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To control ignition timing in a compression ratio change period to further proper timing, in an internal combustion engine having a variable length compression ratio mechanism using a variable length connecting rod.SOLUTION: In a compression ratio change period, reference ignition timing is acquired on assumption that a mechanical compression ratio is a prescribed reference compression ratio being an estimation compression ratio at prescribed set timing, or a compression ratio at a target compression ratio side in the compression ratio change period rather than the estimation compression ratio at prescribed set timing in a compression stroke. When a prediction compression ratio at the reference ignition timing differs from the prescribed reference compression ratio, ignition timing is set at a correction ignition timing which is obtained by correcting the reference ignition timing on the basis of a difference between the prediction compression ratio and the prescribed reference compression ratio.SELECTED DRAWING: Figure 9
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Inventors:
KATO NAOTO
MORIGUCHI RYUTARO
SUGIHIRA SHIGEHIRO
SHIBAIKE YUSHI
MORIGUCHI RYUTARO
SUGIHIRA SHIGEHIRO
SHIBAIKE YUSHI
Application Number:
JP2016147754A
Publication Date:
February 01, 2018
Filing Date:
July 27, 2016
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F02D15/02; F02B75/04; F02D43/00; F02D45/00; F02P5/15; F02P5/152; F16C7/06
Attorney, Agent or Firm:
Yoshiyuki Kawaguchi
Kazunobu Sera
Akira Hirakawa
Takehiko Sekine
Katsuhiko Imahori
Fuminori Miyashita
Atsushi Kokubo
Kazunobu Sera
Akira Hirakawa
Takehiko Sekine
Katsuhiko Imahori
Fuminori Miyashita
Atsushi Kokubo