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US4787916A
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Method and fuel composition for reducing octane requirement increase
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1986-10-31
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Granted: 1988-11-29
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Expires: 2006-10-31
Abstract
Abstract It has been found that when minor amounts of quaternary ammonium hydroxides are added to gasolines, the octane requirement increase for fuel fired spark ignition internal combustion engines is decreased or reversed. Thus, in one aspect, the present invention comprises a method for controlling the ORI of spark ignition internal combustion engines by operating such engines on a fuel containing certain quaternary ammonium hydroxides in amounts sufficient to control the ORI.
Inventors
- 👤 Nicholas Feldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:25
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L10/00; C10L10/10; C10L1/222; C10L1/2222; C10L10/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
63 words
A method of controlling the octane requirement increase of spark ignition internal combustion engines which comprises operating said engines on a fuel containing a major portion of a liquid hydrocarbon base fuel boiling in the boiling range of gasoline and from about 0.001 to about 0.075 weight percent of a quaternary ammonium hydroxide selected from tetrabutylammonium hydroxide, tricaprylicmethyl ammonium hydroxide, and mixtures thereof.
Claim 2
Independent Claim
63 words
A method of controlling the octane requirement increase of spark ignition internal combustion engines which comprises operating said engines on a fuel containing a major portion of a liquid hydrocarbon base fuel boiling in the boiling range of gasoline and from about 0.001 to about 0.075 weight percent of a quaternary ammonium hydroxide selected from tetrabutylammonium hydroxide, tricaprylicmethyl ammonium hydroxide, and mixtures thereof.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein from about 0.003 to about 0.03 weight percent of said quaternary ammonium hydroxide is present.
Claim 4
Dependent Claim
21 words
The method of claim 2 wherein from about 0.005 to about 0.015 weight percent of said quaternary ammonium hydroxide is present.
Claim 5
Dependent Claim
14 words
The method of claim 1 wherein said quaternary ammonium hydroxide comprises tetrabutyl ammonium hydroxide.
Claim 6
Dependent Claim
14 words
The method of claim 1 wherein said quaternary ammonium hydroxide comprises tricaprylicmethyl ammonium hydroxide.
Claim 7
Dependent Claim
43 words
An improved gasoline composition comprising a mixture of a hydrocarbon base fuel boiling in the boiling range of gasoline and from about 0.001 to about 0.075 weight percent of a quaternary ammonium hydroxide selected from tetrabutylammonium hydroxide, tricaprylicmethyl ammonium hydroxide, and mixtures thereof.
Claim 8
Dependent Claim
43 words
An improved gasoline composition comprising a mixture of a hydrocarbon base fuel boiling in the boiling range of gasoline and from about 0.001 to about 0.075 weight percent of a quaternary ammonium hydroxide selected from tetrabutylammonium hydroxide, tricaprylicmethyl ammonium hydroxide, and mixtures thereof.
Claim 9
Dependent Claim
21 words
The composition of claim 6 wherein from about 0.003 to about 0.03 weight percent of said quaternary ammonium hydroxide is present.
Claim 10
Dependent Claim
21 words
The composition of claim 7 wherein from about 0.005 to about 0.015 weight percent of said quaternary ammonium hydroxide is present.
Claim 11
Dependent Claim
14 words
The composition of claim 6 wherein said quaternary ammonium hydroxide comprises tetrabutyl ammonium hydroxide.
Claim 12
Dependent Claim
14 words
The composition of claim 6 wherein said quaternary ammonium hydroxide comprises tricaprylicmethyl ammonium hydroxide.
Claim 13
Dependent Claim
75 words
A gasoline additive concentrate suitable for use in a hydrocarbon base fuel boiling in the boiling range of gasoline comprising organic solvent boiling in the range of gasoline selected from the group of aromatic hydrocarbon solvents, aliphatic alcohols and mixtures thereof and a quaternary ammonium hydroxide selected from tetrabutylammonium hydroxide, tricaprylicmethyl ammonium hydroxide, and mixtures thereof said solvent being present in amounts ranging from about 20 to about 80 percent by weight of the concentrates.
Claim 14
Dependent Claim
75 words
A gasoline additive concentrate suitable for use in a hydrocarbon base fuel boiling in the boiling range of gasoline comprising organic solvent boiling in the range of gasoline selected from the group of aromatic hydrocarbon solvents, aliphatic alcohols and mixtures thereof and a quaternary ammonium hydroxide selected from tetrabutylammonium hydroxide, tricaprylicmethyl ammonium hydroxide, and mixtures thereof said solvent being present in amounts ranging from about 20 to about 80 percent by weight of the concentrates.
Claim 15
Dependent Claim
14 words
The concentrate of claim 11 wherein said quaternary ammonium hydroxide comprises tetrabutyl ammonium hydroxide.
Claim 16
Dependent Claim
14 words
The concentrate of claim 11 wherein said quaternary ammonium hydroxide comprises tricaprylicmethyl ammonium hydroxide.
References Cited (Backward Citations)
US3033665A
Cited
US3008813A
Cited
US3317291A
Cited
US3387954A
Cited
US3468640A
Cited
US3652644A
Cited
US3403014A
Cited
US3709668A
Cited
US3778371A
Cited
US3895925A
Cited
CA1085164A
Cited
US4357148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |