Ignition device for an internal combustion engine

Details Ignition device for an internal combustion engine Ignition device for an internal combustion engine

1997-08-26

2000-04-11

Wong, Don

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315209T, 315209CD, 315209SC, 315211, F02P 1700

Patent

active

060491760

ABSTRACT:
An ignition device for an internal combustion engine capable of suppressing not only a decrease in the discharge energy of the spark plug but also the LC resonance itself. When an igniter 13 is turned on by an ignition timing control unit 14 and a current flows into a primary coil 111 of the igniter 11, a FET 31 is turned off by the ignition timing control unit 14, whereby the primary coil is cut off from an LC resonance-absorbing resistor 32 to prevent a decrease in the current flowing into the primary coil. The ignition timing control unit 14 turns the igniter 13 off and turns the FET 31 on a predetermined period after the start of discharge of the secondary coil 112, whereby the primary coil and the LC resonance-absorbing resistor are connected together to absorb LC resonance after the discharge of the secondary coil, in order to suppress the occurrence of noise caused by LC resonance.

REFERENCES:
patent: 3945362 (1976-03-01), Neuman et al.
patent: 4119868 (1978-10-01), Schach et al.
patent: 4201926 (1980-05-01), Caron
patent: 4329950 (1982-05-01), Orova et al.
Patent Abstracts of Japan, vol. 095, no. 001, Feb. 28, 1995 (1995 02 28) & JP 06 299941 A (Nippondenso Co., Ltd.) Oct. 25, 1994 (1994-10-25).
Patent Abstracts of Japan, vol. 018, no. 491 (M-1672), Sep. 13, 1994 (1994-09-13) & JP 06 159129 A (Daihatsu Motor Co., Ltd.: Others: 01), Jun. 7, 1994.

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