Internal-combustion engines – Charge forming device – Auxiliary control of carburetor fuel metering
Patent
1986-01-17
1987-03-17
Cuchlinski, Jr., William A.
Internal-combustion engines
Charge forming device
Auxiliary control of carburetor fuel metering
123140, 123589, F02M 2304
Patent
active
046498826
ABSTRACT:
An air intake side secondary air supply system for an internal combustion engine having an air intake system using a carburetor and an air intake side secondary air supply passage leading to the downstream of the carburetor, and equipped with a fuel increment control system. The system includes an oxygen concentration sensor producing an output signal whose level is substantially proportional to an oxygen concentration of the exhaust gas, and an open/close valve disposed in the air intake side secondary air supply passage controlled in accordance the output signal of the oxygen concentration sensor. The system is adapted close the open/close valve continously to stop the air/fuel ratio control when an operation of the fuel increment control system is detected.
REFERENCES:
patent: 4052968 (1977-10-01), Hattori et al.
patent: 4153021 (1979-05-01), Hattori et al.
patent: 4335693 (1982-06-01), Cowles
patent: 4376369 (1983-03-01), Horikoshi et al.
patent: 4436070 (1984-03-01), Akagi et al.
patent: 4476532 (1984-10-01), Akiyama et al.
Asakura Masahiko
Kawanabe Tomohiko
Kimura Katsuhiko
Shiina Takanori
Cuchlinski Jr. William A.
Honda Giken Kogyo Kabushiki Kaisha
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