Exhaust-gas recombustion system

Details Exhaust-gas recombustion system Exhaust-gas recombustion system

1993-09-21

1995-05-30

Lazarus, Ira S.

Power plants

Internal combustion engine with treatment or handling of...

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

60293, 60305, 60306, F01N 320

Patent

active

054191254

ABSTRACT:
An exhaust-gas recombustion system for recombusting exhaust gases coming out of exhaust ports of an internal combustion engine equipped with a catalytic converter, comprises a plurality of branch pipes of an exhaust manifold connected to the exhaust ports, a plurality of secondary air injection tubes each connected to either one of the branch pipes for recombusting the exhaust gases coming out of the exhaust ports by secondary air injection. An air-injection nozzle of the secondary air injection tube is directed towards the exhaust port communicating with the connected branch pipe along the axial line of the exhaust port. Additionally, the air-injection nozzle is arranged close to a curved wall of the connected branch pipe to effectively sweep away resultant exhaust gases left in the exhaust port and consequently to assure a rapid activation of the catalytic converter during a cold start of the engine.

REFERENCES:
patent: 3247666 (1966-04-01), Behrens
patent: 3654763 (1972-04-01), Ito
patent: 3869859 (1975-03-01), Thornburgh
patent: 4133175 (1979-01-01), Katoh
patent: 4149378 (1979-04-01), Nakamura
patent: 4154058 (1979-05-01), Mase
patent: 4224792 (1980-09-01), Hayashi

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