Electricity: measuring and testing – Internal-combustion engine ignition system or device – With analysis of displayed waveform
Patent
1987-09-11
1989-07-11
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Internal-combustion engine ignition system or device
With analysis of displayed waveform
324384, F02P 1700
Patent
active
048475629
ABSTRACT:
An ignition coil primary winding signal processing system that is suitable for use with cathode ray tube based instruments used in the troubleshooting, diagnosing, and servicing of spark ignition internal combustion engines. A primary trigger signal gnerator (4) processes the waveform obtained from the primary winding of the ignition coil of an internal combustion engine, V.sub.S, and produces a logical signal, V.sub.L, which drives a bistable circuit. The bistable circuit includes a D flip-flop FF1 that produces a square wave trigger signal, V.sub.T, whose rising edge corresponds to the point in time of the ignition points break, or the equivalent occurs in an electronic or transistorized ignition system. A dwell angle-to-voltage converter (8) also processes the complex waveform obtained from the ignition coil primary winding of an internal combustion engine, V.sub.S, and produces a nonfluctuating waveform, V.sub.C4, that is compared to a reference voltage. The comparator, OA-2, produces an inverted rectangular waveform V.sub.R. A second D flip-flop FF2, also forming a part of the bistable circuit, is set by V.sub.R. The output of FF2 resets FF1 after a delay introduced by a delay circuit (6). V.sub.R, which containes dwell angle information in the time domain, is also processed by a buffer B1 and an averaging network (9), which connects the dwell angle information into a voltage domain dwell angle signal, V.sub.DA.
REFERENCES:
patent: 3650149 (1972-03-01), Howes
patent: 3731206 (1973-05-01), Veale
patent: 3870947 (1975-03-01), Fields
patent: 3955135 (1976-05-01), Fastaia
patent: 3961239 (1976-06-01), Lach
patent: 3986009 (1976-10-01), Fastaia
patent: 4074183 (1978-02-01), Voross
patent: 4109195 (1978-08-01), Palmer
patent: 4249130 (1981-02-01), Goss
patent: 4251774 (1981-02-01), Knodler
patent: 4379263 (1983-04-01), Everett et al.
Mohammed S. Ghausi; "Electronic Circuits", D. Van Nostrand Co., Copyright 1971, p. 465.
Eisenzopf Reinhard J.
Miele Anthony L.
Pacific Northwest Electronics
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