Electricity: measuring and testing – Internal-combustion engine ignition system or device – With analysis of displayed waveform
Patent
1988-10-11
1991-11-26
Wider, Kenneth
Electricity: measuring and testing
Internal-combustion engine ignition system or device
With analysis of displayed waveform
73116, 324402, F02P 1700
Patent
active
050686135
ABSTRACT:
A method and apparatus of developing a stabilized power firing event signal for a cylinder in a wasted spark ignition system having pairs of complementarily connected cylinders, each with a spark plug connected to an opposite end of an independent ignition coil. The first and second firing event signals are developed for each spark plug upon firing of the ignition coil. The first and second signals are combined with like polarity in a summation circuit for eliminating common mode signal portions. The combined signal, which is now stabilized and accurately indicates spark duration, is used for capturing secondary ignition data and may be visually displayed for analysis.
REFERENCES:
patent: 4379263 (1983-04-01), Everett et al.
patent: 4644284 (1987-02-01), Friedline et al.
patent: 4742306 (1988-05-01), Everett et al.
Dikopf Michael
Kreft Keith A.
Loewe Thomas D.
Camasto Nicholas A.
Mueller Robert W.
Sun Electric Corporation
Wider Kenneth
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