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Publication numberUS2221839 A
Publication typeGrant
Publication dateNov 19, 1940
Filing dateOct 20, 1936
Priority dateOct 20, 1936
Publication numberUS 2221839 A, US 2221839A, US-A-2221839, US2221839 A, US2221839A
InventorsLipkin David
Original AssigneeAtlantic Refining Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fuel for compression ignition engines
US 2221839 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

- Patented Nov. 19, 1940 UNITED STATES R-ATENT OFFICE FUEL FOR COMPRESSION IGNITION ENGINES David Lipkin, Berkeley, Calif., assignor to The Atlantic Refining Company, Philadelphia, Pa, a corporation of Pennsylvania No Drawing.

9 Claims.

in the ignition temperature of the fuel oil and/or a lowering of the compression ratio of the engine. 15 A more specific object relates to compression ignition fuels comprising straight-chain aliphatic ethers of suitable volatility, or fuels containing quantities of such ethers suflicient to effect the desired improvement. M In accordance with the present invention, it has been found that when one or more of the straightchain aliphatic ethers are added to a fuel 011 there is obtained a reduction in the delay period between injection and ignition of the fuel oil. This phenomenon is accomplished by a lowering of the ignition temperature of the fuel oil and/ or a lowering of the compression ratio in the compression engine required to ignite the fuel.

The ethers to be employed in accordance with this invention have, in general, a boiling point not less than substantially 100 C. and are substantially miscible with hydrocarbon fuel oils. Such ethers may contain either simple or mixed functions, 1. e., the aliphatic radicals may be similar or dissimilar. The preferred compounds are the monoand poly-ethers having straight-chain alkyl or substituted alkyl groups attached directly to the ether oxygen. Among the ethers which may be employed, per se, as fuels, or as ignition accelerators for fuel oils, may be mentioned the simple ethers such as n-butyl ether, n-amyl ether, n-hexyl ether, cetyl ether, lauryl ether, oleyl ether, stearyl ether and the like. The mixed ethers may be exemplified by n-butyl amyl ether, n-amyl hexyl ether, cetyl lauryl ether, oleyl stearyl ether and the like. The aliphatic straightchain ethers which may suitably be employed also include the monoor dimethyl ethers of 50 ethylene glycol, the monoor diethyl ethers of ethylene glycol, the butyl ethers of ethylene glycol, the ethyl ethers of diethylene glycol, the butyl ethers of diethylene glycol and the like. While it is preferable to employ ethers containing only straight-chain aliphatic groups, other ethers hav- Application October 20, 1938, Serial No. 106,535

ing a slightly branched long chain, e. g., diisoundecyl ether, have been found suitable.

The following examples are illustrative of the results which may be obtained in accordance with the present invention. The cetane number of the fuel is employed herein as an index of the quality of the fuel, and an improvement in the fuel is expressed by an increase in the cetane number. The base fuel oil employed in the examples had an A, P. I. gravity of 233 and a. distillation range of from 398 F. to 620 F..

Celgnition accelerator (vol. percent) iiarne o.

The quantity of ether employed will depend upon the degree of improvement required, and may vary from about by volume of the fuel to 50% or 100%. The ethers of the present invention are characterized in having boiling points or boiling ranges above about 100 C. and preferably within the range of from about 100 C. to about 300 C. Low boiling ethers such as methyl andethyl ether are too volatile to be suitable as addition agents for compression ignition fuels, and such highly volatile ethers are not contemplated as within the scope of this invention.

Among the advantages which accrue from the .use of straight-chain ethers as ignition accelerators in compression ignition fuels may be mentioned:

(1) Elimination of knocking and rough-running by decreasing the ignition lag.

(2) Easier starting due to the reduced spontaneous ignition temperatures of the blended fuel.

(3) Possibility of using inferior grade of fuel oil. By the addition of the accelerator, low grade fuels which at present are unsuitable for use in compression ignition engines, may be rendered equal or superior to high grade unblended fuels.

The above description and examples are to be taken as illustrative only and not as limiting the scope of the invention. Any modification or variation therefrom which conforms to the spirit of the invention is intended to be included within the scope of the claims.

In the appended claims the term gasoline boiling range refers to a temperature range of the order'of about 90 F. to 390 F.

What I claim is:

1. A motor fuel for high speed Diesel engines having a boiling range substantially above that of gasoline, which comprises fuel oil and at least 5% by volume of a straight-chain aliphatic ether boiling within the range of from about 100 C. to about 300 C.

- 2. A motor fuel for high speed Diesel engines having a boiling range substantially above that of gasoline, which comprises fuel oil and at least 5% by. volume of an ether boiling within the range of from about 100 C. to about 300 C., said ether containing at least one straight-chain aliphatic group attached to the ether oxygen atom.

3. A motor fuel for high speed Diesel engines having a boiling range substantially above that of gasoline, which comprises fuel oil and atleast 5% by volume of an ether boiling within the range of from about 100 C. to about 300 C. and having the formula R-O-R', wherein R and R are straight-chain alkyl groups.

4. A motor fuel for high speed Diesel engines having a boiling range substantially above that of gasoline, which comprises fuel oil and at least 5% by volume of n-butyl ether.

5. A motor fuel for highspeed Diesel engines having a boiling range substantially above that of gasoline, which comprises fuel oil and at least 5% by volume of n-amyl ether.

6. A motor fuel for high speed Diesel engines 6 having a boiling range substantially above that of gasoline, which comprises fuel oil and at least 5 {7; by volume of mono-butyl ether of diethylene g co 7. Diesel motor fuel oil of improved cetane 10 number comprising petroleum oil boiling above the gasoline range and containing at least 5% of a dialkyl ether selected from the group consisting of di normal butyl ether and di normal amyl ether. v 15 8. Diesel motor fuel oil of improved cetane number comprising petroleum oil boiling above the gasoline range and containing at least 5% of di normal butyl ether.

9. Diesel motor fuel oil of improved cetane 20 number comprising petroleum oil boiling above the gasoline range and containing at least 5% of di normal amyl ether.

DAVID LIPKIN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2431322 *May 1, 1944Nov 25, 1947California Research CorpDiesel engine starting fluid
US2579890 *Jul 3, 1948Dec 25, 1951Shell DevNonclogging distillate fuel oil
US2655440 *May 24, 1949Oct 13, 1953California Research CorpDiesel fuel oil
US2722277 *Jan 27, 1950Nov 1, 1955Socony Mobil Oil Co IncRecovery by combustion of petroleum oil from partially depleted subterranean reservoirs
US2774656 *Aug 28, 1953Dec 18, 1956Texas CoSupplementary fuel mixture for cold starting diesel engines
US2842432 *Dec 7, 1953Jul 8, 1958Texas CoSupplementary fuel mixture for cold starting diesel engines
US3615292 *Nov 26, 1968Oct 26, 1971Cities Service Oil CoSmoke suppressant compositions for petroleum fuels
US3639109 *Jan 2, 1968Feb 1, 1972Cities Service Oil CoSmoke suppressant compositions for petroleum fuels
US4378973 *Jan 7, 1982Apr 5, 1983Texaco Inc.Diesel fuel containing cyclohexane, and oxygenated compounds
US4522631 *Nov 18, 1983Jun 11, 1985Texaco Inc.Diesel fuel containing rare earth metal and oxygenated compounds
US4836830 *May 18, 1988Jun 6, 1989Rhone-Poulenc Inc.Rare earth compositions for diesel fuel stabilization
US5268008 *Nov 13, 1990Dec 7, 1993Union Oil Company Of CaliforniaHydrocarbon fuel composition
US5290325 *Feb 28, 1990Mar 1, 1994Union Oil Company Of CaliforniaHydrocarbon fuel composition containing alpha-ketocarboxylate additive
US5380346 *Jun 25, 1993Jan 10, 1995Fritz; James E.Fortified hydrocarbon and process for making and using the same
US5425790 *Feb 3, 1994Jun 20, 1995Arco Chemical Technology, L.P.Diesel fuel
US5520710 *May 15, 1995May 28, 1996George A. OlahCleaner burning and cetane enhancing diesel fuel supplements
US7828862Oct 31, 2007Nov 9, 2010Syn-Tech Fine Chemicals Company LimitedHighly effective fuel additives for igniting internal combustion engines, diesel engines and jet propulsion engines
US8915976 *Dec 2, 2013Dec 23, 2014Christopher Haydn LoweryFuel additive
US20040060228 *Sep 30, 2002Apr 1, 2004Webber Kenneth M.Gasoline additive and method of making same
US20090107035 *Oct 31, 2007Apr 30, 2009Syn-Tech Fine Chemicals Company LimitedHighly effective fuel additives for igniting internal combustion engines, diesel engines and jet propulsion engines
EP0903395A1 *Sep 21, 1998Mar 24, 1999Air Products And Chemicals, Inc.Diesel fuel composition comprising dialkoxy alkanes for increased cetane number
WO1995025153A1 *Mar 14, 1995Sep 21, 1995Olah George ACleaner burning and cetane enhancing diesel fuel supplements
WO2014037439A1Sep 5, 2013Mar 13, 2014Shell Internationale Research Maatschappij B.V.Fuel composition
Classifications
U.S. Classification44/443, 44/448
International ClassificationC10L1/18
Cooperative ClassificationC10L1/18, C10L1/1985, C10L1/1852
European ClassificationC10L1/18