Spark ignition timing control system for internal combustion engine with feature of suppression of jerking during engine acceleration

Patent · Tue Jul 04 04:00:00 EDT 1989

OSTI ID:5652537

Tomisawa, N

This patent describes a spark ignition timing control system for an internal combustion engine, it comprises: sensor means monitoring preselected parameters for producing a sensor signal; first means for deriving a spark ignition timing on the basis of data contained in the sensor signal; second means for detecting an engine acceleration demand for producing an accelerating condition indicative signal; and third means, responsive to the accelerating condition indicative signal, for modifying the spark ignition timing derived by the first means after expiration of a first predetermined period of time of occurence of the accelerating condition indicative signal, in such a manner that the spark ignition timing is advanced and retarded for suppressing cycle-to-cycle fluctuation of engine speed and for smoothly increasing engine speed.

• Assignee: Japan Electronic Control Systems Co., Limited, Isezaki
• Patent Number(s): US 4844026
• OSTI ID: 5652537
• 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)
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DAMPING
ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
MECHANICAL VIBRATIONS
MONITORS
SPARK IGNITION ENGINES
TIMING PROPERTIES