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US 4,441,971 AGranted
Process and apparatus for reducing soot
AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsTomoji Ishiguro, Yoshimi Kizaki
Life of this patent
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Abstract
The process and apparatus for reducing soot in soot-containing gases, such as exhaust gases from a Diesel engine, by applying thereto an alternating or pulsating voltage to promote oxidation of soot and to change the character of soot. The resultant gas may be contacted with active medium, such as a heated net of metal or an oxidation catalyst, to oxidize the remaining soot.
Claims3
A process for reducing soot in exhaust gases from an automobile Diesel engine which comprises:
- introducing soot-containing exhaust gases from an automobile Diesel engine into a container;
- applying to said soot-containing exhaust gases an alternating or pulsating voltage in the range of from 100 v/cm to 10,000 v/cm and having a frequency in the range of from 10 Hz to 250 Hz to break masses of soot particles, each mass having a diameter of at least 0.2 micron, into individual finer particles, each having a diameter not greater than several hundred angstroms;
- and
- discharging said gases out of said container.
1 more element
Dependencies are inferred from the claim text.