Ignition timing control apparatus for internal combustion engine

Patent · Tue Jun 17 04:00:00 EDT 1986

OSTI ID:5662181

Takahashi, A; Danno, Y; Iwata, T; Ueda, A

An ignition timing control apparatus is described for an internal combustion engine having a reference ignition timing comprising: sensing means for sensing vibrations including knocks of the engine; knock signal deriving means for deriving knock signals from the output of the sensing means; correction magnitude determining means for determining from the knock signals derived by the knock signal deriving means of ignition timing correction magnitude for suppressing the occurrence of knock; displacement magnitude determining means for determining from at least one of an output of the knock signal deriving means and an output of the correction magnitude determining means as a displacement magnitude for the reference ignition timing corresponding to the octane rating of a fuel used in the engine; and ignition timing determining means for setting the reference ignition timing at an optimum ignition timing angle for the engine responsive to the correction magnitude determined by the correction magnitude determining means and the displacment magnitude determined by the displacement magnitude determining means.

• Assignee: Mitsubishi Denki Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4594982
• OSTI ID: 5662181
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ANTIKNOCK RATINGS
COMPUTERIZED CONTROL SYSTEMS
CONTROL
CONTROL SYSTEMS
CORRECTIONS
ELECTRONIC CIRCUITS
ENGINES
HEAT ENGINES
IGNITION SYSTEMS
INCIDENCE ANGLE
INTERNAL COMBUSTION ENGINES
KNOCK CONTROL
MECHANICAL VIBRATIONS
OPTIMIZATION
SIGNALS
TIMING CIRCUITS