Catalytic converter accessory apparatus

Details Catalytic converter accessory apparatus Catalytic converter accessory apparatus

1991-03-04

1992-11-10

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60307, 422176, F01N 328

Patent

active

051613700

ABSTRACT:
The present invention features an automotive catalytic converter accessory device for improving its efficiency and operational life. The accessory device comprises a housing disposed in the manifold exhaust pipe, upstream of the catalytic converter. The housing contains a hollow conduit that conveys the exhaust gases of the manifold to the entrance or interface of the catalytic converter. The conduit comprises a plurality of injection orifices or a continuous annular orifice disposed about the periphery thereof. The orifices introduce air into the conduit passage. The air enters the conduit at spaced-apart, tangential angles with respect to the axis of longitudinal flow of the automotive exhaust gases. This causes a dynamic mixing of both air and exhaust gas, wherein both fluids begin to mix and swirl with respect to the flow axis. The swirling mixture then enters the catalytic converter, where by reason of its centrifugal action, the mixture is caused to expand into the wider converter cavity. The swirling expanding gases completely, and more uniformly, bathe the converter substrate.

REFERENCES:
patent: 3144309 (1964-08-01), Sparrow
patent: 3300964 (1967-01-01), Knopp
patent: 3630031 (1971-12-01), Grainger

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