Title:
IGNITION TIMING CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2013155662
Kind Code:
A
Abstract:
To decrease useless retarded angle in ignition timing.
In a stationary state where an engine load is stable, on the basis of a basic ignition timing set according to an operating condition of the engine, ignition timing is controlled depending on whether or not a knocking occurs. The ignition timing is stored as a learnt value. When a variation of the load is equal to or larger than a determination value, the ignition timing is retarded further from the learnt value. The determination value is determined depending on the learnt value of the ignition timing.
Inventors:
HONDA TOMOAKI
ANDO DAIGO
ASAI KOHEI
ANDO DAIGO
ASAI KOHEI
Application Number:
JP2012016699A
Publication Date:
August 15, 2013
Filing Date:
January 30, 2012
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F02P5/152; F02P5/153
Attorney, Agent or Firm:
Fukami patent office