Fluid mixing apparatus

Details Fluid mixing apparatus Fluid mixing apparatus

1989-09-08

1991-02-19

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Methods

60307, 137602, 137896, F01N 318, F01N 330

Patent

active

049932241

ABSTRACT:
Apparatus is provided for mixing an oxygen containing gas, for example air, with exhaust gas from a liquefied petroleum gas (LPG) fuelled internal combustion engine, the mixture bieng supplied to a catalytic converter to reduce the level of carbon monoxide in the exhaust gas. The apparatus comprises a first duct for supplying the exhaust gas to a catalytic converter, and a second duct having a closed end extending transversely into the first duct for supplying air to mix with the exhaust gas. Opening means are provided in the wall of the second duct to allow air, pumped under pressure to the second duct by an engine driven pump, to flow into and mix with the exhaust gas. The opening means decrease in flow section in the direction of the closed end of the second duct and open transversely of the flow of exhaust gas through the first duct to provide a high velocity flow of air causing turbulence and good mixing of the air and exhaust gases, thus enabling the catalytic converter to achieve a high level of efficiency of carbon monoxide conversion.

REFERENCES:
patent: 2531127 (1950-11-01), Hershey
patent: 3113418 (1963-12-01), Campbell
patent: 3486326 (1969-12-01), Hermes
patent: 3613359 (1971-10-01), Posh
patent: 3734111 (1973-05-01), McClintock
patent: 4519423 (1985-05-01), Ho

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