Ignition timing control apparatus of internal-combustion engine

Details Ignition timing control apparatus of internal-combustion engine Ignition timing control apparatus of internal-combustion engine

1990-05-08

1991-12-10

Argenbright, Tony M.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

73 1DV, 340515, F02P 5145

Patent

active

050708430

ABSTRACT:
An ignition timing control apparatus for an internal-combustion engine comprises a resonance-type acceleration sensor for detecting vibration acceleration, a discriminating means for eliminating noise signal components from the output of the acceleration sensor and selecting knocking signal components, a reference ignition timing signal generating means for generating a reference ignition timing signal, a phase shifting means for shifting the phase of the reference ignition timing signal in accordance with the output of the discriminating means, a switching means for interrupting power supply to an ignition coil corresponding to the output of the phase shifting means; and an operating condition detecting means for applying a specific voltage to the acceleration sensor, and for verifying the operating condition of the acceleration sensor and the integrity of a connection between the output side of the acceleration sensor and the input side of the discriminating means from the responsiveness of the acceleration sensor to the specific voltage.

REFERENCES:
patent: 4418567 (1983-12-01), Boning et al.
patent: 4462362 (1984-07-01), Bonitz et al.
patent: 4607602 (1986-08-01), Komurasaki
patent: 4620446 (1986-11-01), Jensen et al.
patent: 4788957 (1988-12-01), Komurasaki
patent: 4950915 (1990-08-01), Spies et al.

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