Air-fuel ratio control device of an internal combustion engine

Details Air-fuel ratio control device of an internal combustion engine Air-fuel ratio control device of an internal combustion engine

1982-04-01

1984-02-21

Cox, Ronald B.

Internal-combustion engines

Charge forming device

Auxiliary control of carburetor fuel metering

13753317, 251129, F02B 3300, F02M 700

Patent

active

044323247

ABSTRACT:
An internal combustion engine comprising a carburetor which has a main air bleed passage and a slow air bleed passage. An air-fuel ratio of the mixture fed into the cylinder of an engine is so controlled that it becomes equal to the stoichiometric air-fuel ratio by a single electromagnetic control valve arranged in the main air bleed passage and the slow air bleed passage. The control valve comprises a first reed valve arranged in the slow air bleed passage, a second reed valve arranged in the main air bleed passage, and an electromagnetic device simultaneously actuating the first reed valve and the second reed valve while maintaining the opening area of the first reed valve at an area which is larger than the opening area of the second reed valve.

REFERENCES:
patent: 4105726 (1978-08-01), Lindberg
patent: 4181108 (1980-01-01), Bellicardi
patent: 4287864 (1981-09-01), Takada
patent: 4314536 (1982-02-01), Tipton
patent: 4320731 (1982-03-01), Braun
patent: 4345560 (1982-08-01), Nakamura

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