Exhaust manifold for internal combustion engine

Details Exhaust manifold for internal combustion engine Exhaust manifold for internal combustion engine

1976-04-22

1978-01-10

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60323, 123122AB, F01N 310

Patent

active

040671925

ABSTRACT:
An exhaust manifold for a multi-cylinder internal combustion engine is provided with preliminary oxidation reaction chambers, each of which receives exhaust gases from exhaust port liners each serving a pair of adjacent cylinders of different exhaust timing. These preliminary oxidation reaction chambers each communicate downstream with a main oxidation reaction chamber subdivided into a plurality of concentric subchambers. The subchambers enclose the preliminary oxidation reaction chambers and exhaust gas inlet pipes. Combustion of unburned hydrocarbons (HC) is principally accomplished in the preliminary oxidation reaction chambers, and the exhaust gases are maintained at relatively high temperature and retained for a sufficient period of time in the subchambers to accomplish oxidation of the unburned carbon monoxide (CO).

REFERENCES:
patent: 3756027 (1973-09-01), Gotoh
patent: 3839862 (1974-10-01), Gota
patent: 3940927 (1976-03-01), Maurhoff
patent: 3969893 (1976-07-01), Sakurai

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