Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1979-10-09
1981-07-28
Cox, Ronald B.
Internal-combustion engines
Charge forming device
Fuel injection system
123414, 123415, 123644, F02P 504
Patent
active
042804612
ABSTRACT:
A contactless ignition system for internal combustion engines controls the closing angle of an engine in response to a signal derived by comparing the AC output of an alternator operated in synchronism with the rotation of the engine with the output of a bias-up circuit adapted to supply a DC bias signal which varies with the speed of the engine. The outputs of the alternator and the bias-up circuit are applied to a voltage comparison circuit and the voltage comparison circuit applies to the bias-up circuit a signal having a frequency which is proportional to the number of revolutions of engine. In response to the signal the bias-up circuit generates a signal proportional to the engine speed and this signal is converted through a non-linear circuit of the bias-up circuit into a DC bias signal whose rate of change is small at low engine speeds but increases with an increase in speed at higher engine speeds.
REFERENCES:
patent: 3447521 (1969-06-01), Piteo
patent: 3995608 (1976-12-01), Suda
patent: 4111174 (1978-09-01), Fitzner
patent: 4112904 (1978-09-01), Uno
patent: 4164926 (1979-08-01), Kindlmann
Makino Tomoatsu
Miwa Katsuteru
Okuda Ryoichi
Cox Ronald B.
Nippondenso Co. Ltd.
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