Internal-combustion engines – High tension ignition system – Using capacitive storage and discharge for spark energy
Patent
1982-11-19
1984-07-03
Nelli, Raymond A.
Internal-combustion engines
High tension ignition system
Using capacitive storage and discharge for spark energy
123605, F02P 302, F02P 100
Patent
active
044572859
ABSTRACT:
An internal combustion engine ignition system comprises: (a) a capacitive discharge ignition device having a voltage transformer which converts a low DC voltage into a corresponding AC voltage and boosts and rectifies the AC voltage into a first higher DC voltage for discharging each of the spark plugs sequentially, boosts and rectifies the AC voltage into a second higher DC voltage for generating arc-sustaining ignition energy, and rectifies the AC voltage into a third higher DC voltage; (b) an ignition signal generating means which generates and outputs an ignition signal whenever the engine rotates through a predetermined engine rotational angle offset by an angular interval determined by the engine speed and engine load; (c) an ignition coil means having a primary winding and secondary winding, one end of the primary winding thereof receiving the first DC voltage from the DC-DC converting means, the other end of the primary winding thereof being grounded when the ignition signal is received from the ignition signal generating means, one end of the secondary winding receiving the second DC voltage from the DC-DC converting means; and (d) a plurality of spark plugs, each located within a corresponding engine cylinder and having a gap between electrodes and one end thereof being connected to the DC-DC converting means for receiving the second and third DC voltages when the ignition signal is received by the ignition coil.
REFERENCES:
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patent: 3750637 (1973-08-01), Minks
patent: 3832986 (1974-09-01), Dogadko
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patent: 3847129 (1974-11-01), Canup
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patent: 3961617 (1976-06-01), Satake
patent: 4369758 (1983-01-01), Endo
Furukawa Jun-ichi
Hamai Kyugo
Ishizuka Takashi
Nakagawa Yasuhiko
Nakai Meroji
Nelli Raymond A.
Nissan Motor Company Ltd.
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