System and method for controlling ignition timing for an internal combustion engine

Patent · Tue Apr 11 04:00:00 EDT 1989

OSTI ID:6015564

Morita, T; Hidaka, T; Kashimura, Y

A system is described for controlling ignition timing for an internal combustion engine, comprising: (a) means for detecting an engine operating condition; (b) means for detecting an occurrence of engine knocking in the engine; (c) means for determining a current engine operating region on the basis of the engine operating condition detected by the first means; (d) means for setting a basic ignition timing angle on the basis of the engine operating condition detected by the first means; (e) means for learning a retardation angle correction amount by which the set basic ignition timing angle is corrected toward a retardation angle side; (f) means for reading the learning value as the retardation angle correction amount when the engine operating region is changed to a predetermined engine operating region; (g) means for calculating the retardation angle correction amount; and (h) means for producing an ignition signal upon the receipt of which air-fuel mixture supplied to the engine is ignited at a timing of the set basic ignition timing angle which is corrected by the retardation angle correction amount.

• Assignee: Nissan Motor Co., Limited, Kanagawa
• Patent Number(s): US 4819603
• OSTI ID: 6015564
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
CONTROL
CONTROL SYSTEMS
ENGINES
FUEL SYSTEMS
FUEL-AIR RATIO
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
KNOCK CONTROL
TIMING PROPERTIES