Internal-combustion engines – Noncompression
Patent
1976-12-21
1978-09-12
Myhre, Charles J.
Internal-combustion engines
Noncompression
123119EC, 123 32EA, 60276, 60285, F02B 308, F02M 712, F01N 308
Patent
active
041128800
ABSTRACT:
A control point of a closed loop mixture control system for an internal combustion engine is varied by extending the duration of a signal representative of the deviation of air-fuel ratio from a preset value, or by alternately supplying an engine speed representative pulse sequence in opposite polarities to a first and a second output terminal. An integrator is connected to respond to the duration-extended deviation signal or connected to the first and second output terminals to effect integration of the alternatively supplied, opposite-polarity pulses to generate a stepwise voltage waveform. The integrator output is used as a feedback control signal which fluctuates about a level differing from the present value to shift the control point of the closed loop corresponding to said difference.
REFERENCES:
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patent: 3990411 (1976-11-01), Oberstadt et al.
patent: 3998189 (1976-12-01), Aoki
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patent: 4019474 (1977-04-01), Nishimiya et al.
patent: 4023357 (1977-05-01), Masaki
patent: 4029061 (1977-06-01), Asano
Asano Masaharu
Kadowaki Shunichi
Lall Parshobam S.
Myhre Charles J.
Nissan Motor Company Limited
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