Heating system for catalytic converter

Details Heating system for catalytic converter Heating system for catalytic converter

1995-12-08

1997-07-08

Kwon, John T.

Power plants

Internal combustion engine with treatment or handling of...

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

60285, 60286, F01N 336

Patent

active

056449135

ABSTRACT:
A heating system for a catalytic converter of a multi-cyclinder, spark-ignition engine is provided. Half of the cylinders of the engine, for example, the cylinder #2 and the cylinder #3, are operated on a rich gas mixture with an excess air ratio of 0.6 or less to produce a combustible gas mixture comprising hydrogen, carbon monoxide, and unburned fuel components, while the remaining half of the cylinders, for example, the cylinder #1 and the cylinder #4, are utilized as air blowers to which no fuel is fed. The flammable gas mixture produced from the combustible gas produced in the cylinder #2 and the cylinder #3 and the air supplied by the cylinder #1 and the cylinder #4 is burned in the combustor equipped with an ignition device which is installed upstream from the catalytic converter to provide heat energy to activate the catalyst. The system can rapidly heat and activate the catalyst without requiring a special fuel supply system and air blower.

REFERENCES:
patent: 4165610 (1979-08-01), Iizuka et al.
patent: 4256074 (1981-03-01), Sugasawa et al.
patent: 4263782 (1981-04-01), Matsumoto et al.
patent: 4452040 (1984-06-01), Kobashi
patent: 4467602 (1984-08-01), Lizuka et al.
patent: 4887426 (1989-12-01), Goerlich
patent: 5044158 (1991-09-01), Goerlich
patent: 5207058 (1993-05-01), Sasaki et al.

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