Exhaust gas control apparatus

Details Exhaust gas control apparatus Exhaust gas control apparatus

1979-07-12

1981-07-07

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Having means analyzing composition of exhaust gas

60289, 60307, 417471, F01N 310

Patent

active

042767458

ABSTRACT:
An improved exhaust gas control apparatus, which utilizes a 3-way catalyst for reducing the contents of harmful components in exhaust gas, incorporates a diaphragm type air pump for supplying secondary air, upstream of the catalyst, to the exhaust gas. A chamber, which is formed on one side of the diaphragm in the air pump, is communicated through an electromagnetic changeover valve with the upstream side of the catalyst.

REFERENCES:
patent: 1883459 (1932-10-01), Avigdor
patent: 3203168 (1965-08-01), Thomas
patent: 3986352 (1976-10-01), Casey
patent: 4068472 (1978-01-01), Takata
patent: 4099377 (1978-07-01), Yoshimura
patent: 4149376 (1979-04-01), Masaki

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