Sparkplug voltage detecting probe device for use in internal com

Details Sparkplug voltage detecting probe device for use in internal com Sparkplug voltage detecting probe device for use in internal com

1993-05-12

1994-10-11

Lee, Benny

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315209T, 315209M, 31511101, 431254, 431255, 431256, H05B 3702

Patent

active

053550560

ABSTRACT:
In a sparkplug voltage detecting probe device for use in internal combustion engine comprising, a sensor is provided to form a static capacity between the sensor and an ignition coil which is connected to a spark plug. A sparkplug voltage divider circuit has a capacitor connected between the sensor and the ground. A release circuit has a resistor connected in parallel with the capacitor so as to provide a time constant of a RC path. A short circuit is provided to instantaneously release an electrical charge from the capacitor either immediately before establishing a spark voltage for the spark plug or immediately after initiating the spark action of the spark plug. A sparkplug voltage waveform detecting circuit detects a sparkplug voltage waveform divided by the sparkplug voltage divider circuit.

REFERENCES:
patent: 4341195 (1982-07-01), Nishio et al.
patent: 4369757 (1983-01-01), Anzai
patent: 5056496 (1991-10-01), Morino et al.

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