Electronic control system for a carburetor
An electronic control system for a carburetor of an internal combustion engine having an induction passage, engine cooling water and a device supplies an air-fuel mixture to the induction passage. A converter converts the temperature of the engine cooling water to a first voltage signal. A choke valve is disposed in the induction passage and a bimetal actuates the choke valve. A positive temperature coefficient heater heats the bimetal. A heater circuit produces a second voltage signal dependent on the resistance of the positive temperature coefficient heater. An air-fuel ratio controller controls the air -fuel ratio of the mixture supplied by the air-fuel mixture supply device. A calculating circuit combines the voltage signals from the converter and the heater circuit respectively and produces an electronic control for controlling the air-fuel ratio control. The electronic control is responsive to the output electric signals of the calculating circuit such that the airfuel ratio is controlled to a value providing satisfactory cold engine operating performance.
- Assignee:
- Fuji Jukogyo K K (Japan) Nissan Motor Co Ltd (Japan)
- Patent Number(s):
- US 4352347
- OSTI ID:
- 6715983
- Resource Relation:
- Patent Priority Date: Priority date 2 Aug 1979, Japan; Other Information: PAT-APPL-174379
- Country of Publication:
- United States
- Language:
- English
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Electronic control system for a carburetor