Postcombustion airflow regulating valve for internal combustion

Details Postcombustion airflow regulating valve for internal combustion Postcombustion airflow regulating valve for internal combustion

1977-03-08

1979-01-02

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

F01N 310

Patent

active

041320700

ABSTRACT:
A device is disclosed which is intended to regulate the rate of flow of air injected into an exhaust-gas stream of an internal combustion engine exhaust system in order to complete post-combustion of the exhaust gas and reduce air pollution, said device being a variable-section valve which is actuated by an active member responsive to the negative pressure existing in the air-induction duct of the engine. An alternative embodiment is also disclosed in which means are provided to make the adjustment finer. Excessive cooling of the exhaust gas stream is avoided and the efficiency of the exhaust system in general is improved, including the case in which catalytic mufflers are adopted.

REFERENCES:
patent: 3106820 (1963-10-01), Schaffer
patent: 3868868 (1975-03-01), Chana
patent: 3931710 (1976-01-01), Hartel

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