System to control the ratio of air to fuel of the mixture delive

Details System to control the ratio of air to fuel of the mixture delive System to control the ratio of air to fuel of the mixture delive

1975-12-22

1977-05-17

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Having means analyzing composition of exhaust gas

60285, 123119EC, 261121B, F01N 315, F02B 3300

Patent

active

040233570

ABSTRACT:
The rate of additional air delivered to an engine slow fuel passage is controlled in response to an exhaust gas sensor output representative of the air/fuel ratio of the input charge into the engine. An additional air bleed passage into the carburetor has two inlets of different diameters, the larger one of which is provided with a valve operable to close the larger inlet in accordance with a sensed idle condition of the engine.

REFERENCES:
patent: 3906910 (1975-09-01), Szlaga
patent: 3921612 (1975-11-01), Aono

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