US3657892A
Expired / Lapsed
US
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Exhaust gas treatment system
Assignee: Universal Oil Products Co
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Filing: 1970-06-29
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Granted: 1972-04-25
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Expires: 1990-06-29
Abstract
Abstract An exhaust gas treatment method and system for an internal combustion engine utilizing a catalytic converter, wherein carbon or charcoal is incorporated into the system so that the gases H2 and CO can be produced by the dissociation of water, present in the exhaust gas, and the partial oxidation of the carbon to become a secondary fuel for a catalytic conversion zone of the converter. In a preferred embodiment at least a portion of the exhaust gases are caused to pass through a bed of carbon under predetermined conditions prior to their entry into the catalytic converter intermediate between engine startup and a predetermined high limit temperature.
Inventors
- 👤 Martin W Perga
- 👤 Ted V Depalma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:51
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/0807; F01N3/0828; F01N3/0835; F01N13/00; F01N13/009; F01N3/0871; F01N3/0878; F01N3/10; F01N3/18; F01N3/20; F01N3/2053; F01N3/24; F01N3/28; F01N2250/00; F01N2250/12; F01N2330/00; F01N2330/08; F01N2410/00; F01N2410/02; F01N2410/12; F01N2470/00; F01N2470/30; F01N2610/00; F01N2610/04; F01N3/206; F02; F02B; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
The method of claim 1 further characterized in that said steps are carried out below at least the temperature where the soot present in the stream of exhaust gases will be oxidized in the catalyst material zone.
Claim 2
Dependent Claim
26 words
The method of claim 1 further characterized in that said carbon zone contains a catalyst to catalyze the oxidation of carbon and dissociation of water reactions.
References Cited (Backward Citations)
US2488563A
Cited
US2942932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |