Internal-combustion engines – Igniters – Incandescent
Patent
1976-10-26
1978-10-03
Myhre, Charles J.
Internal-combustion engines
Igniters
Incandescent
307363, 315209T, F02P 900
Patent
active
041178190
ABSTRACT:
A variable dwell ignition system comprising a circuit responsive to changes in engine RPM for causing the dwell time of the ignition system to be varied accordingly. The circuit is adapted to be connected to a sensor coil to receive ignition timing signals developed thereacross which are generated in timed relationship to the engine operation. The circuit provides for changing the direct current (DC) level about which the ignition signals are generated such that a threshold level is varied. As the threshold level is varied the dwell time of the system is varied respectively.
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patent: 3872323 (1975-03-01), Frederiksen et al.
patent: 3882840 (1975-05-01), Adamian et al.
patent: 3892219 (1975-07-01), Preiser et al.
patent: 4019484 (1977-04-01), Mori
Walter G. Jung, "IC OP-AMP Cookbook," 1976, .COPYRGT.1974, p. 86, p. 512.
Millman and Halkias, "Electronic Devices and Circuits," 1967, p. 351.
Gagnon, Karwoski, "Complementary Output Stage Improves Op-Amp Response," Electronics,9-25-1972, p. 110.
McCaffrey, Brandt, "FET Input Reduces IC Op Amp's Bias and Offset," Electronics, 12/7/1970, pp. 85-88.
Jarrett Robert B.
Zobel Don W.
Bingham Michael D.
Dolinar Andrew M.
Motorola Inc.
Myhre Charles J.
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