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Fuel additive to control deposit formation

a technology of additives and deposits, applied in the field of fuel composition, can solve the problems of incomplete combustion, insufficient fuel volatility, and affecting the effect of the approach

Inactive Publication Date: 2008-11-27
AFTON CHEMICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]In an aspect, there is disclosed a fuel composition comprising a deposit-modifying effective amount of a hydrocarbyl-substituted succinimide; a detergent; and a fuel.

Problems solved by technology

Of course, this approach breaks down in extreme ambient cold-starts, in which the fuel volatility is insufficient to produce vapor in ignitable concentrations with air.
A fuel-air mixture that is not completely vaporized, nor stoichiometric, results in incomplete combustion and reduced thermal efficiency.
This leads to engine deposits and injector fouling.
However, the reference does not teach that the succinimide can be used in fuel composition in a deposit-modifying effective amount.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples

[0058]Several fuel compositions were prepared by varying the type of additive and the amount of the additive present in the base fuel composition. The fuel compositions were then subjected to a modified ASTM D-6421 test with a Honda injector, wherein the amount of deposits on the new fuel injectors was measured as a percent of plugging. Four readings for each fuel composition were taken and the readings were averaged. The fuel compositions and results are shown in Table 1.

TABLE 1CarrierCarrierDispersant, Total solidDosageEx.Detergent, %fluid 1, %fluid 2, %%content, %rateInj. 1Inj. 2Inj. 3Inj. 4Avg.1Base fuel14.21.93.829.312.32H-6416AC-240054.40%80 ptb17.21.132.743.323.6(30.22%)(24.18%)3Base fuel11.716.60.813.810.74H-6416AC-2400H-319247.10%80 ptb9.75.61.36.35.7(29.05%)(14.95%)(3.10%)5H-6416X-105B500 N (15.0%)66.00%400 ppmv6.83.214.63.57(30.40%)(20.60%)6Base fuel7.91.922.918.512.87Base fuel12.91.630.58.812.58H-6416X-105B500 N (14.50)H-319267.15%400 ppmv1.10.8362.7(29.38%)(19.91%)(3.36...

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Abstract

The present disclosure is directed to a fuel composition comprising a deposit-modifying effective amount of a hydrocarbyl-substituted succinimide; a detergent; and a fuel. A method for reducing deposit formation is also disclosed.

Description

FIELD OF THE DISCLOSURE[0001]The present disclosure relates to a fuel composition comprising a deposit-modifying effective amount of a hydrocarbyl-substituted succinimide; a detergent; and a fuel. A method for reducing deposit formation is also disclosed.BACKGROUND OF THE DISCLOSURE[0002]Over the years considerable work has been devoted to additives for controlling (preventing or reducing) deposit formation in the fuel induction systems of spark-ignition internal combustion engines. In particular, additives that can effectively control fuel injector deposits, intake valve deposits and combustion chamber deposits represent the focal point of considerable research activities in the field and despite these efforts, further improvements are desired.[0003]A variety of systems have been devised to supply fine liquid fuel droplets and air to internal combustion engines. These systems either supply fuel directly into the combustion chamber (direct injection) or utilize a carburetor or fuel ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10L1/224
CPCC10L1/143C10L1/1616C10L1/1641C10L1/1826C10L1/198C10L1/1985C10L1/22C10L1/224C10L1/238C10L1/2383C10L1/2387C10L3/10C10L3/12C10L10/00C10L10/18C10L10/04
Inventor HOU, PETER WANGQICOLUCCI, WILLIAM J.NICHOLS, THOMAS WILLIAM
Owner AFTON CHEMICAL
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