Ignition timing controller for internal combustion engine

Details Ignition timing controller for internal combustion engine Ignition timing controller for internal combustion engine

2007-02-06

2007-02-06

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Spark ignition timing control

Electronic control

Reexamination Certificate

active

11222768

ABSTRACT:
A crank angle sensor outputs a crank angle signal pulse every when a crankshaft rotates a predetermined crank angle. A time period sufficient for rotating a crankshaft between adjacent crank angle signal pulses is measured. The time period is referred to as a rotating time period. A next rotating time period between pulses including a next required ignition timing is estimated based on the rotating time period measured at a time when an engine speed is lower than a predetermined value. Then, a start timing at which a primary current begins to be supplied is set based on the next timing period.

REFERENCES:
patent: 4085714 (1978-04-01), Hattori et al.
patent: 4838228 (1989-06-01), Yoneyama
patent: 5271367 (1993-12-01), Abe
patent: 2006/0081203 (2006-04-01), Izumi et al.
patent: 4-362275 (1992-12-01), None

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