Patent US3869262A successfully refreshed from Google Patents.
US3869262A
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Fuel and additive for the production thereof
Assignee: OESTERR HIAG WERKE AG
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Filing: 1972-05-05
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Granted: 1975-03-04
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Expires: 1992-05-05
Abstract
Abstract WHEREIN R1 is H or CH3 and R2 and R3 are each CH3, C2H5, C3H7 or C4H9. The exhaust gases from an engine using the disclosed fuel contain a reduced amount of carbon monoxide. An improved fuel for use in internal combustion engines comprising gasoline and at least one, and preferably at least three, oxygen-containing compounds of the general formula:
Inventors
- 👤 Herbert Mayerhoffer
- 👤 Wilhelm Schneider
- 👤 Hardo Nuring
- 👤 Wolfgang Exner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:00
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/02; C10L1/00; C10L1/02; C10L1/023; C10L1/10; C10L10/10; C10L1/12; C10L1/1233; C10L1/125; C10L1/14; C10L1/16; C10L1/1608; C10L1/18; C10L1/182; C10L1/1822; C10L1/1824; C10L1/185; C10L1/1852; C10L1/1857; C10L1/19; C10L1/22; C10L1/222; C10L1/223; F; F02; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
52 words
A FUEL FOR USE IN INTERNAL COMBUSTION ENGINES HAVING A SUBSTANTIALLY CONSTANT HEATING VALUE AND PROVIDING A REDUCED AMOUNT OF CARBON MONOXIDE IN THE EXHAUST GASES OF THE ENGINE COMPRISING GASOLINE CONTAINING FROM 0.2 TO 12 VOLUME % OF AN ADDITIVE COMPRISING AT LEAST ONE OXYGEN-CONTAINING COMPOUND OF THE GENERAL FORMULA (I)
Claim 2
Dependent Claim
52 words
A FUEL FOR USE IN INTERNAL COMBUSTION ENGINES HAVING A SUBSTANTIALLY CONSTANT HEATING VALUE AND PROVIDING A REDUCED AMOUNT OF CARBON MONOXIDE IN THE EXHAUST GASES OF THE ENGINE COMPRISING GASOLINE CONTAINING FROM 0.2 TO 12 VOLUME % OF AN ADDITIVE COMPRISING AT LEAST ONE OXYGEN-CONTAINING COMPOUND OF THE GENERAL FORMULA (I)
Claim 3
Dependent Claim
57 words
A fuel according to claim 1, wherein said additive contains 20 to 99.95 parts by volume methylal, 0 to 10 parts by volume dimethyl acetal, and further contains 0 to 60 parts by volume methanol, 0 to 40 parts by volume isopropanol, 0 to 10 parts by volume i-butanol and 0 to 30 parts by volume methylacetate.
Claim 4
Dependent Claim
28 words
A fuel according to claim 1, wherein said additive contains 50 to 90 parts by volume diethyl acetal and further contains 10 to 50 parts by volume isopropanol.
Claim 5
Dependent Claim
17 words
A fuel according to claim 1, wherein said additive contains at least three of said oxygen-containing compounds.
Claim 6
Dependent Claim
36 words
A fuel according to claim 4, wherein said additve contains 40 to 70 parts by volume ethyl formal, and further contains 20 to 40 parts by volume methanol and 10 to 30 parts by volume isopropanol.
Claim 7
Dependent Claim
18 words
A fuel according to claim 1, wherein said additive further contains from 0.0002 to 0.4 volume % water.
Claim 8
Dependent Claim
17 words
A fuel according to claim 1, further comprising from 0.02 to 4 volume % aniline or methylaniline.
Claim 9
Dependent Claim
47 words
A fuel according to claim 7, wherein said additive contains 33 parts by volume methylaniline, 19 parts by volume methanol, 6.7 parts by volume methylal, 19 parts by volume methyl acetate, 13.4 parts by volume isopropanol, 6.7 parts by volume paraldehyde and 2.2 parts by volume water.
Claim 10
Dependent Claim
36 words
A fuel according to claim 1, wherein the ratio of the partial pressure of said oxygen-containing compounds at all temperatures within the boiling range of said gasoline to the partial pressure of gasoline is substantially constant.
Claim 11
Dependent Claim
20 words
A fuel according to claim 1, wherein the boiling curve thereof is substantially the same as that of said gasoline.
Claim 12
Dependent Claim
44 words
A fuel according to claim 1, wherein said additive contains a mixture of 35 to 45 parts by volume methylal 35 to 45 parts by volume methanol 15 to 25 parts by volume isopropanol, and 10 to 125 parts by volume aniline or methylaniline.
Claim 13
Dependent Claim
42 words
A fuel according to claim 1, which is lead-free, and wherein said additive contains a mixture of 40 parts by volume methylal 40 parts by volume methanol 20 parts by volume isopropanol, and 25 to 65 parts by volume aniline or methylaniline.
Claim 14
Dependent Claim
35 words
An additive for fuel useful in internal combustion engines which provides a decreased amount of carbon monoxide in the exhaust gases from said engine comprising at least one oxygen-containing compound of the general formula (I).
Claim 15
Dependent Claim
35 words
An additive for fuel useful in internal combustion engines which provides a decreased amount of carbon monoxide in the exhaust gases from said engine comprising at least one oxygen-containing compound of the general formula (I).
Claim 16
Dependent Claim
42 words
A fuel according to claim 1, wherein said additive contains a C1 - C7 acetal and at least two members selected from the group consisting of a C1 - C7 alcohol, a C1 - C7 acetal and a C1 - C7 acetate.
Claim 17
Dependent Claim
20 words
A fuel according to claim 1, wherein said additive is present in the amount of 0.5 to 10 volume %.
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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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |