Internal-combustion engines – Igniters – Incandescent
Patent
1975-01-23
1976-08-10
Myhre, Charles J.
Internal-combustion engines
Igniters
Incandescent
123148E, 123148F, F02P 100
Patent
active
039735451
ABSTRACT:
A contactless ignition system includes a free running oscillator which generates an output timing pulse to a pulse generator and an ignition coil whenever the oscillations of a saturable core transformer and a series resonant circuit which is driven by the feedback voltage induced in the transformer secondary winding cease. In the free running state, the feedback voltage sustains the oscillator operation at a frequency fixed by the resonant circuit. A disk, having a plurality of permanent magnets evenly spaced around its periphery, is affixed to the distributor shaft and disposed within the vicinity of the saturable core of the transformer. As the disk rotates, the magnetic field of each magnet, as it passes the vicinity of the core, momentarily saturates the transformer core. Saturation of the core reduces the feedback voltage below the oscillation sustaining level and, consequently, causes the oscillator to generate an output pulse which is synchronous with the engine speed. Means are provided for making the rise time of the output pulse independent of the engine speed, thereby facilitating the use of this system at extremely low cranking speeds.
REFERENCES:
patent: 3395686 (1968-08-01), Minks
patent: 3549944 (1970-12-01), Minks
patent: 3808513 (1974-04-01), Canup
patent: 3818885 (1974-06-01), Canup
patent: 3820520 (1974-06-01), Canup
Fischman Martin
Matarese John
Devinsky Paul
GTE Laboratories Incorporated
Hart Leslie J.
Kriegsman Irving M.
Myhre Charles J.
LandOfFree
Contactless ignition system utilizing a saturable core transform does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Contactless ignition system utilizing a saturable core transform, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contactless ignition system utilizing a saturable core transform will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1737924