US4222746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diesel fuel containing wax oxidates to reduce particulate emissions
Assignee: Texaco Inc
•
Filing: 1979-04-25
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Granted: 1980-09-16
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Expires: 1999-04-25
Abstract
Abstract Addition of 0.1 to 1.5 percent by weight of wax oxidates to a diesel fuel is found to reduce the amount of soot and invisible particles produced when the fuel is used in a diesel engine. The wax oxidates act synergistically with fuel-soluble organometallic compounds such as alkyl cyclopentadienyl manganese tricarbonyl complex salts in reducing particulates. The wax oxidates used have a ratio of Neutralization Number to Saponification Number below about 0.40 and a Saybolt Universal Viscosity at 210° F. higher than 1600.
Inventors
- 👤 William M. Sweeney
- 👤 Harold G. Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:03
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/02; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/1805; C10L1/1808; C10L1/30; C10L1/305; F; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
71 words
A fuel composition comprising a mixture of hydrocarbons boiling in the range of 350° to 700° F. containing from 0.1 to 1.5 weight percent each of a wax oxidate characterized by a ratio of Neutralization Number to Saponfication Number below about 0.40 and an SUS viscosity at 210° of above 1500 and of a fuel soluble organometallic compound, said amount being sufficient to reduce particulate emission upon combustion of said fuel.
Claim 2
Dependent Claim
71 words
A fuel composition comprising a mixture of hydrocarbons boiling in the range of 350° to 700° F. containing from 0.1 to 1.5 weight percent each of a wax oxidate characterized by a ratio of Neutralization Number to Saponfication Number below about 0.40 and an SUS viscosity at 210° of above 1500 and of a fuel soluble organometallic compound, said amount being sufficient to reduce particulate emission upon combustion of said fuel.
Claim 3
Dependent Claim
19 words
The composition of claim 1, wherein said compound is an alkylcyclopentadienyl manganese tricarbonyl complex salt, ferrocene or iron pentacarbonyl.
Claim 4
Dependent Claim
32 words
A method for reducing the soot and invisible particulate in the exhaust of a diesel engine which comprises supplying to and burning in said engine a composition as defined in claim 1.
References Cited (Backward Citations)
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US2862803A
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US2807524A
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US2839552A
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US2978472A
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US2894970A
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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) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |