Ignition timing control system and method for an internal combustion engine

Patent · Tue Apr 21 04:00:00 EDT 1987

OSTI ID:6547026

Morita, T

A system is described for controlling the ignition timing of an internal combustion engine, comprising: (a) first means for detecting engine operating conditions including engine load; (b) second means for determining a basic ignition advance angle on the basis of the detected engine operating conditions; (c) third means for producing a transient indication on the basis of the detected operating conditions when the rate of change of engine load first increases by a predetermined amount and then decreases by a predetermined amount; (d) fourth means for correcting the basic timing advance angle by a retardation angle so that no knocking will occur during the predetermined transient state when the third means produces the transient indication indicating that the engine is starting to operate in the predetermined transient state; and (e) fifth means for igniting air-fuel mixture supplied to the engine at a timing corresponding to the corrected ignition timing angle.

• Assignee: Nissan Motor Company, Limited, Yokohama
• Patent Number(s): US 4658789
• OSTI ID: 6547026
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
COMPUTERIZED CONTROL SYSTEMS
CONTROL
CONTROL SYSTEMS
DISPERSIONS
ENGINES
FUEL-AIR RATIO
HEAT ENGINES
IGNITION
IGNITION QUALITY
IGNITION SYSTEMS
INCIDENCE ANGLE
INTERNAL COMBUSTION ENGINES
KNOCK CONTROL
MIXTURES
OPERATION
TIMING PROPERTIES
TRANSIENTS
VEHICLES