Vehicle exhaust-gas purifier

Details Vehicle exhaust-gas purifier Vehicle exhaust-gas purifier

1998-03-19

1999-09-28

Ryznic, John E.

Power plants

Internal combustion engine with treatment or handling of...

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

55302, 95 74, 95279, 96 50, 60297, 60299, F01N 300, B01D 4100, B03C 374

Patent

active

059569468

ABSTRACT:
A vehicle exhaust-gas purifier adapted for use on a testing line in a repair shop or the like is provided, wherein exhaust gases emitted from an engine of a vehicle are gathered directly from the vehicle and emitted into the environment after being purified. The vehicle exhaust-gas purifier is provided with a mechanism for preventing deterioration of catalysts used for reducing gaseous pollutants in the exhaust gases. The purifier has an exhaust-gas gathering nozzle A which is detachably connected to an exhaust pipe of an engine of a vehicle. The exhaust gases are introduced through the exhaust-gas gathering nozzle A and an inlet C into a purifier housing. Then, any carbon particles and unburned fuel mist particles are removed from the exhaust gases through a filter chamber 10, and then the major gaseous pollutants, HC, NO.sub.x, and CO, are removed from the exhaust gases through a catalyst chamber 20. The filter chamber 10 has a filter unit 11 and an electrostatic dust collecting unit 12 provided therein. Any carbon particles and unburned fuel accumulated on the electrostatic dust collecting unit 12 are removed therefrom in a cleaning chamber 40 so as to refresh the electrostatic dust collecting unit 12.

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