System for controlling ignition timing of an internal combustion engine

Patent · Tue Feb 14 04:00:00 EST 1989

OSTI ID:6268585

Ohkumo, H

This patent describes a system for controlling ignition timing of an automotive engine mounted on a vehicle, having detector means for detecting engine operating conditions including engine speed and for producing an operating signal dependent on the detected conditions, basic ignition timing calculating means responsive to the operating signal for producing a basic ignition timing. It also includes means for detecting load on the engine and for producing a load signal when the load is larger than a predetermined first load value, advance angle decision means responsive to the load signal for producing an advance angle, desired ignition timing decision means for adding the advance angle to the basic ignition timing and for producing a desired ignition timing, and adjusting means responsive to the desired ignition timing for exciting an ignition coil of the engine to form a spark at a spark plug at the desired ignition timing, the improvement in the system.

• Assignee: Fuji Jukogyo Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4803967
• OSTI ID: 6268585
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
ACCELERATION
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
ENGINES
FUNCTIONS
HEAT ENGINES
IGNITION
IGNITION SYSTEMS
INCIDENCE ANGLE
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
METERS
OPERATION
RESPONSE FUNCTIONS
SIGNALS
SPARK IGNITION ENGINES
TIMING PROPERTIES