Self-cleaning catalytic converter
Abstract
Abstract A SELF-CLEANING CATALYTIC CONVERTER FOR CONVERSION OF SOOT-LADEN EXHAUST GASES. THE CONVERTER HAS A CATALYST RETAINING SECTION WITH CATALYST MATERIAL THEREIN. ADJACENT FLOW ZONES ARE ESTABLISHED THROUGHT THE CATALYST MATERIAL, WITH EACH FLOW ZONE HAVING A DIFFERENT FLOW RESISTANCE THAN THE ADJACENT ONE. THUS, THE MASS FLOW VELOCITY THROUGH ONE FLOW ZONE WILL BE GREATER THAN THROUGH AN ADJACENT ONE. THE CATALYST MATERIAL IS PACKED LOOSELY WHICH PERMITS MOVEMENT OF THE CATALYST MATERIAL. AS THE PRESSURE DROP INCREASES IN SOME OF THE FLOW ZONES FROM SOOT DEPOSITION, THE CATALYST MATERIAL WILL MOVE FROM EACH FLOW ZONE TO AN ADJACENT FLOW ZONE THUS PERMITTING MORE EFFICIENT CONVERSION OF THE SOOT WITHIN THE EXHAUST GASES. D R A W I N G
Inventors
- 👤 Martin W Perga
- 👤 Ted V De Palma
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |