Ignition timing control system for light duty combustion...

Details Ignition timing control system for light duty combustion... Ignition timing control system for light duty combustion...

2006-02-21

2006-02-21

Argenbright, Tony M. (Department: 3747)

Internal-combustion engines

Spark ignition timing control

Electronic control

C123S478000, C123S480000, C123S406570, C701S103000, C701S110000

Reexamination Certificate

active

07000595

ABSTRACT:
A control system for a low cost, light duty combustion engine, where the control system generally utilizes engine speed and/or temperature input signals and independent operating sequences to determine a desired ignition timing and air-to-fuel ratio for a combustible mixture. There are several independent operating sequences, each one of which is designed to optimally control the engine under certain conditions. These operating sequences include a Cranking sequence that commences after the engine is initially turned on, a Warm Up sequence which follows the Cranking sequence, a Normal Mode sequence for typical operating conditions, an Acceleration sequence for certain increases in engine speed, a Come Down sequence for when a sufficient engine speed is followed by a certain decrease in speed, and a Recovery Bump sequence for when the engine speed dips below a predetermined level.

REFERENCES:
patent: 3861366 (1975-01-01), Masaki et al.
patent: 5191531 (1993-03-01), Kurosu et al.

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