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Fuel additive composition suitable for control and removal of tenacious engine deposits

a technology of additive composition and engine, which is applied in the direction of fuel additive, liquid carbonaceous fuel, fuel additive, etc., can solve the problems of carburetor port, visible driveability, and automobile engine deposits on the surface of engine components, so as to prevent and control engine deposits

Inactive Publication Date: 2005-12-08
CHEVRON ORONITE CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a fuel composition that prevents and removes engine deposits, especially piston ring groove deposits. It contains a hydrocarbyl-substituted polyoxyalkylene amine and a glycol ether component. The fuel composition also contains an aromatic ester compound or a cyclic carbonate. The invention is based on the discovery that fuel compositions containing high concentrations of certain components provide excellent control of engine deposits. The technical effect of the invention is to provide a fuel composition that can effectively control and remove engine deposits, especially piston ring deposits.

Problems solved by technology

It is well known that automobile engines tend to form deposits on the surface of engine components, such as carburetor ports, throttle bodies, fuel injectors, intake ports, intake valves, and combustion chambers, due to the oxidation and polymerization of hydrocarbon fuel.
These deposits, even when present in relatively minor amounts, often cause noticeable driveability problems, such as stalling and poor acceleration.
Moreover, engine deposits can significantly increase an automobile's fuel consumption and production of exhaust pollutants.
However, even after employing fuel detergents, injectors and other components subject to heavy deposits and / or tenacious deposit regimes require occasional additional cleaning to maintain optimum performance.

Method used

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  • Fuel additive composition suitable for control and removal of tenacious engine deposits
  • Fuel additive composition suitable for control and removal of tenacious engine deposits
  • Fuel additive composition suitable for control and removal of tenacious engine deposits

Examples

Experimental program
Comparison scheme
Effect test

example a3-1

Preparation of Dodecylphenoxy Poly(oxybutylene)poly(oxypropylene) Amine

[0093] A dodecylphenoxypoly(oxybutylene)poly(oxypropylene) amine was prepared by the reductive amination with ammonia of the random copolymer poly(oxyalkylene) alcohol, dodecylphenoxy poly(oxybutylene)poly(oxypropylene) alcohol, wherein the alcohol has a number average molecular weight of about 1598. The poly(oxyalkylene) alcohol was prepared from dodecylphenol using a 75 / 25 weight / weight ratio of butylene oxide and propylene oxide, in accordance with the procedures described in U.S. Pat. Nos. 4,191,537; 2,782,240; and 2,841,479, as well as in Kirk Othmer, “Encyclopedia of Chemical Technology”, 4th edition, Volume 19, 1996, page 722. The reductive amination of the poly(oxyalkylene) alcohol was carried out using conventional techniques as described in U.S. Pat. Nos. 5,112,364; 4,609,377; and 3,440,029.

example a3-2

Preparation of Dodecylphenoxy Poly(oxybutylene) Amine

[0094] A dodecylphenoxy poly(oxybutylene) amine was prepared by the reductive amination with ammonia of a dodecylphenoxy poly(oxybutylene) alcohol having an average molecular weight of about 1600. The dodecylphenoxy poly(oxybutylene) alcohol was prepared from dodecylphenol and butylene oxide, in accordance with the procedures described in U.S. Pat. Nos. 4,191,537; 2,782,240; and 2,841,479, as well as in Kirk Othmer, “Encyclopedia of Chemical Technology”, 4th edition, Volume 19, 1996, page 722. The reductive amination of the dodecylphenoxy poly(oxybutylene) alcohol was carried out using conventional techniques as described in U.S. Pat. Nos. 5,112,364; 4,609,377; and 3,440,029.

[0095] B. The Glycol Ether Component

[0096] The glycol ether employed in this invention can be represented by the formula:

R3—OR4OyH  B-I [0097] wherein: [0098] R3 is a hydrocarbyl group having from about 1 to about 30 carbon atoms; [0099] R4 is a C2 to C5 a...

example c-1

Preparation of a 4-polyisobutylphenoxyethyl para-aminobenzoate

a) Polyisobutyl phenol

[0124] To a flask equipped with a magnetic stirrer, reflux condenser, thermometer, addition funnel and nitrogen inlet was added 203.2 grams of phenol. The phenol was warmed to 40.degree. C. and the heat source was removed. Then, 73.5 milliliters of boron trifluoride etherate was added dropwise. 1040 grams of Ultravis 10 Polyisobutene (molecular weight 950, 76% methylvinylidene, available from British Petroleum) was dissolved in 1,863 milliliters of hexane. The polyisobutene was added to the reaction at a rate to maintain the temperature between 22.degree. C. to 27.degree. C. The reaction mixture was stirred for 16 hours at room temperature. Then, 400 milliliters of concentrated ammonium hydroxide was added, followed by 2,000 milliliters of hexane. The reaction mixture was washed with water (3.times.2,000 milliliters), dried over magnesium sulfate, filtered and the solvents removed under vacuum to y...

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Abstract

Disclosed is a fuel composition for the control and / or removal of persistent engine deposits. Said fuel composition comprises a major amount of hydrocarbons boiling in the gasoline range fuel, a hydrocarbyl-substituted polyoxyalkylene amine and a glycol ether component; and is useful for the prevention and control engine deposits.

Description

FIELD OF THE INVENTION [0001] This invention relates to fuel compositions employing a hydrocarbyl-substituted polyoxyalkylene amine and a glycol ether component useful for the prevention and control of engine deposits. Moreover, said fuel additive composition of the present invention can be used for the control and removal of existing tenacious engine deposits, and is particularly suited for controlling and removing piston ring groove deposits. DESCRIPTION OF THE RELATED ART [0002] It is well known that automobile engines tend to form deposits on the surface of engine components, such as carburetor ports, throttle bodies, fuel injectors, intake ports, intake valves, and combustion chambers, due to the oxidation and polymerization of hydrocarbon fuel. These deposits, even when present in relatively minor amounts, often cause noticeable driveability problems, such as stalling and poor acceleration. Moreover, engine deposits can significantly increase an automobile's fuel consumption a...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10L1/234C10L1/14C10L1/18C10L1/192C10L1/195C10L1/22C10L10/00C10L10/04
CPCC10L1/143C10L1/1852C10L10/00C10L1/1985C10L1/238C10L1/19C10L10/04C10L10/06
Inventor AHMADI, MAJID R.VAUDRIN, DAMON C.
Owner CHEVRON ORONITE CO LLC