Exhaust gas purifying apparatus for multicylinder internal combu

Details Exhaust gas purifying apparatus for multicylinder internal combu Exhaust gas purifying apparatus for multicylinder internal combu

1978-04-07

1980-12-23

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60299, F01N 315

Patent

active

042402549

ABSTRACT:
An exhaust gas purifying apparatus having an exhaust pipe divided into at least two branches each connected to a different cylinder or cylinders. Each of the exhaust pipe branches is further connected to a secondary air supply tube to intermittently supply secondary air upstream of a three-way catalyst disposed in the branch thereby to vary periodically within a range the air-fuel ratio of exahust gases flowing into the three-way catalyst.

REFERENCES:
patent: 2854816 (1958-10-01), Bodine
patent: 4024706 (1977-05-01), Adawi
patent: 4069666 (1978-01-01), Nakamura
patent: 4087964 (1978-05-01), Miyagi
patent: 4127088 (1978-11-01), Ezoe

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