CA1137463A - Mileage-improving lubricating oil - Google Patents
Mileage-improving lubricating oilInfo
- Publication number
- CA1137463A CA1137463A CA000340058A CA340058A CA1137463A CA 1137463 A CA1137463 A CA 1137463A CA 000340058 A CA000340058 A CA 000340058A CA 340058 A CA340058 A CA 340058A CA 1137463 A CA1137463 A CA 1137463A
- Authority
- CA
- Canada
- Prior art keywords
- oil
- engine
- lubricating
- glycerol
- crankcase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000000446 fuel Substances 0.000 claims abstract description 17
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 13
- 229930195729 fatty acid Natural products 0.000 claims abstract description 13
- 239000000194 fatty acid Substances 0.000 claims abstract description 13
- -1 fatty acid ester Chemical class 0.000 claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 4
- NAGJZTKCGNOGPW-UHFFFAOYSA-K dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [O-]P([O-])([S-])=S NAGJZTKCGNOGPW-UHFFFAOYSA-K 0.000 claims abstract description 4
- 239000011701 zinc Substances 0.000 claims abstract description 4
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 12
- 230000001050 lubricating effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- RZRNAYUHWVFMIP-KTKRTIGZSA-N 1-oleoylglycerol Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(O)CO RZRNAYUHWVFMIP-KTKRTIGZSA-N 0.000 claims description 5
- RZRNAYUHWVFMIP-HXUWFJFHSA-N glycerol monolinoleate Natural products CCCCCCCCC=CCCCCCCCC(=O)OC[C@H](O)CO RZRNAYUHWVFMIP-HXUWFJFHSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 239000002253 acid Substances 0.000 description 5
- 150000004665 fatty acids Chemical class 0.000 description 5
- 235000019198 oils Nutrition 0.000 description 5
- 150000007513 acids Chemical class 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 239000003112 inhibitor Substances 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000005690 diesters Chemical class 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 229930014626 natural product Natural products 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- 239000003760 tallow Substances 0.000 description 2
- 150000005691 triesters Chemical group 0.000 description 2
- DTRGDWOPRCXRET-UHFFFAOYSA-N (9Z,11E,13E)-4-Oxo-9,11,13-octadecatrienoic acid Natural products CCCCC=CC=CC=CCCCCC(=O)CCC(O)=O DTRGDWOPRCXRET-UHFFFAOYSA-N 0.000 description 1
- DTRGDWOPRCXRET-SUTYWZMXSA-N (9e,11e,13e)-4-oxooctadeca-9,11,13-trienoic acid Chemical compound CCCC\C=C\C=C\C=C\CCCCC(=O)CCC(O)=O DTRGDWOPRCXRET-SUTYWZMXSA-N 0.000 description 1
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 235000019482 Palm oil Nutrition 0.000 description 1
- 235000019483 Peanut oil Nutrition 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- IPCSVZSSVZVIGE-UHFFFAOYSA-N palmitic acid group Chemical group C(CCCCCCCCCCCCCCC)(=O)O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/286—Esters of polymerised unsaturated acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/251—Alcohol-fuelled engines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/255—Gasoline engines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/255—Gasoline engines
- C10N2040/28—Rotary engines
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The fuel economy of an internal combustion engine can be improved by adding to the lubricating oil used to lubricate the crankcase of said engine from 0.25 to 2 weight percent of a fatty acid ester of glycerol in combination with 15 to 25 millimols per kilogram of zinc O,O-di(2-ethylhexyl)phosphorodithioate.
The fuel economy of an internal combustion engine can be improved by adding to the lubricating oil used to lubricate the crankcase of said engine from 0.25 to 2 weight percent of a fatty acid ester of glycerol in combination with 15 to 25 millimols per kilogram of zinc O,O-di(2-ethylhexyl)phosphorodithioate.
Description
~13~ 3 003 This invention relates to a method for improving 004 the fuel economy of an internal combustion engine.
006 With the crisis associated with diminishing 007 amounts of fossil fuel and the rapidly increasing prices 008 for this fuel, there has been a great deal of interest in 009 improving fuel economy, that is, the number of miles 010 obtained in a given vehicle per liter of fuel.
011 Some fatty acids of glycerol are known in the in-012 dustrial oil area, for use at low concentrations. Some 013 are known to be oiliness agents; however, since piston 014 and ring lubrication is predominantly hydrodynamic, gains 015 in fuel economy through the use of additives in the lubri-016 cating oil which reduce the coefficient of friction in 017 mixed lubrication will probably be small and difficult to 018 assess.
020 It has now been found that if 0.25 to 2 weight 021 percent of a fatty acid ester of glycerol in combination 022 with 15 to 25 millimols per kilogram of zinc O,O-di(2-023 ethylhexyl)phosphorodithioate is added to the lubricating 024 oil used to lubricate the crankcase of an internal comb~s-025 tion engine a measurable improvement in the fuel economy, 026 that is, the miles per liter of fuel, of the engine is 027 observed.
028 DETAILED DESC~IPTION OF THE INVENTION
029 Adding from 0.25 to 2 weight percent, and prefer-030 ably from 0.40 to 1.25 weight percent of a fatty acid 031 ester of glycerol along with 15 to 25 millimols per kilo-032 gram of zinc O,O-di(2-ethylhexyl)phosphorodithioate to a 033 crankcase lubricating oil significantly improves the fuel -034 economy of the internal combustion engine. Specifically, 035 improvements in fuel mileage of from 2 to 3% on the aver-036 age have been observed in engine tests. This fuel economy 037 improvement can be obtained in both compression-ignition 038 engines, that is, diesel engines, and spark-ignition ., ~
q~
:t 137~;3 engines, that is, gasoline cngines.
~ atty acid esters of glycerol can be prepared by a variety of meth-ods well known in the art. Many of these esters, such as glycerol monooleate and glycerol tallowate, are manufactured on a commercial scale. The esters useful for this invention are oil-soluble and are preferably prepared from C8 to C22 fatty acids or mixtures thereof such as are found in natural products.
The fatty acid may be saturated or unsaturated. Certain compounds found in acids from natural sources may include licanic acid which contains one keto group.
Preferred fatty acids are oleic, stearic, palmitic, myristic, palm-itoleic, linoleic, lauric, linolenic, and eleostearic, and the acids from the natural products tallow, palm oil, olive oil, peanut oil, corn oil, neat's foot oil and the like.
Particularly preferred acids are oleic acid and the acids from tal-low.
When glycerol is esterified with a fatty acid, mono-, di- and tri-esters form. Commercial glycerol monooleate, for example, contains a large amount of dioleate and a minor proportion of trioleate. Mono-, di- and tri-esters and mixtures thereof are contemplated for use in this invention.
When, for the sake of convenience, the common term such as "glycerol mono-oleate" is used, the di- and trioleates are to be included within the meaning of glycerol monooleate.
The lubricating oil to which the fatty acid ester of glycerol can be added can be any hydrocarbon-based lubricating oil. The hydrocarbon lu-bricating oils may be derived from synthetic or natural sources and may be paraffinic, naphthenic or asphaltic base, or mixtures thereof. A variety of additives are ordinarily present in lubricating oils used to lubricate modern internal combustion engines. These additives include antioxidants, dispers-ants, rust inhibitors, foam inhibitors, corrosion inhibitors, antiwear agents, and a variety of other well-known additives.
''kf \~
006 With the crisis associated with diminishing 007 amounts of fossil fuel and the rapidly increasing prices 008 for this fuel, there has been a great deal of interest in 009 improving fuel economy, that is, the number of miles 010 obtained in a given vehicle per liter of fuel.
011 Some fatty acids of glycerol are known in the in-012 dustrial oil area, for use at low concentrations. Some 013 are known to be oiliness agents; however, since piston 014 and ring lubrication is predominantly hydrodynamic, gains 015 in fuel economy through the use of additives in the lubri-016 cating oil which reduce the coefficient of friction in 017 mixed lubrication will probably be small and difficult to 018 assess.
020 It has now been found that if 0.25 to 2 weight 021 percent of a fatty acid ester of glycerol in combination 022 with 15 to 25 millimols per kilogram of zinc O,O-di(2-023 ethylhexyl)phosphorodithioate is added to the lubricating 024 oil used to lubricate the crankcase of an internal comb~s-025 tion engine a measurable improvement in the fuel economy, 026 that is, the miles per liter of fuel, of the engine is 027 observed.
028 DETAILED DESC~IPTION OF THE INVENTION
029 Adding from 0.25 to 2 weight percent, and prefer-030 ably from 0.40 to 1.25 weight percent of a fatty acid 031 ester of glycerol along with 15 to 25 millimols per kilo-032 gram of zinc O,O-di(2-ethylhexyl)phosphorodithioate to a 033 crankcase lubricating oil significantly improves the fuel -034 economy of the internal combustion engine. Specifically, 035 improvements in fuel mileage of from 2 to 3% on the aver-036 age have been observed in engine tests. This fuel economy 037 improvement can be obtained in both compression-ignition 038 engines, that is, diesel engines, and spark-ignition ., ~
q~
:t 137~;3 engines, that is, gasoline cngines.
~ atty acid esters of glycerol can be prepared by a variety of meth-ods well known in the art. Many of these esters, such as glycerol monooleate and glycerol tallowate, are manufactured on a commercial scale. The esters useful for this invention are oil-soluble and are preferably prepared from C8 to C22 fatty acids or mixtures thereof such as are found in natural products.
The fatty acid may be saturated or unsaturated. Certain compounds found in acids from natural sources may include licanic acid which contains one keto group.
Preferred fatty acids are oleic, stearic, palmitic, myristic, palm-itoleic, linoleic, lauric, linolenic, and eleostearic, and the acids from the natural products tallow, palm oil, olive oil, peanut oil, corn oil, neat's foot oil and the like.
Particularly preferred acids are oleic acid and the acids from tal-low.
When glycerol is esterified with a fatty acid, mono-, di- and tri-esters form. Commercial glycerol monooleate, for example, contains a large amount of dioleate and a minor proportion of trioleate. Mono-, di- and tri-esters and mixtures thereof are contemplated for use in this invention.
When, for the sake of convenience, the common term such as "glycerol mono-oleate" is used, the di- and trioleates are to be included within the meaning of glycerol monooleate.
The lubricating oil to which the fatty acid ester of glycerol can be added can be any hydrocarbon-based lubricating oil. The hydrocarbon lu-bricating oils may be derived from synthetic or natural sources and may be paraffinic, naphthenic or asphaltic base, or mixtures thereof. A variety of additives are ordinarily present in lubricating oils used to lubricate modern internal combustion engines. These additives include antioxidants, dispers-ants, rust inhibitors, foam inhibitors, corrosion inhibitors, antiwear agents, and a variety of other well-known additives.
''kf \~
Claims (10)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A lubricating oil composition comprising an oil of lubricating viscosity, from 15 to 25 millimols per kilogram of zinc O,O-di(2-ethylhexyl)phosphorodithioate and from 0.25 to 2 weight percent of a C8-22 fatty acid ester of glycerol.
2. The composition of claim 1 wherein from 0.40 to 1.25 weight percent of a C8-22 fatty acid ester of glycerol is present in the lubricating oil.
3. A lubricating oil of claim 2 wherein said fatty acid ester of glycerol is glycerol monooleate.
4. A lubricating oil of claim 2 wherein said fatty acid ester of glycerol is glycerol tallowate.
5. A method of improving the fuel economy of an internal combustion engine comprising lubricating the crankcase of said engine with an oil of claim 1 or 2.
6. A method of improving the fuel economy of an internal combustion engine comprising lubricating the crankcase of said engine with an oil of claim 3 or 4.
7. The method of improving the fuel economy of a compression ignition engine comprising lubricating the crankcase of said engine with an oil of claim 1 or 2.
8. The method of improving the fuel economy of a compression ignition engine comprising lubricating the crankcase of said engine with an oil of claim 3 or 4.
9. The method of improving the fuel economy of a spark ignition engine comprising lubricating the crankcase of said engine with an oil of claim 1 or 2.
10. The method of improving the fuel economy of a spark ignition engine comprising lubricating the crankcase of said engine with an oil of claim 3 or 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US97069878A | 1978-12-18 | 1978-12-18 | |
| US970,698 | 1978-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1137463A true CA1137463A (en) | 1982-12-14 |
Family
ID=25517350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000340058A Expired CA1137463A (en) | 1978-12-18 | 1979-11-16 | Mileage-improving lubricating oil |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5584395A (en) |
| CA (1) | CA1137463A (en) |
| DE (1) | DE2949940A1 (en) |
| FR (1) | FR2444707B1 (en) |
| GB (1) | GB2038355B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015057279A1 (en) | 2013-10-18 | 2015-04-23 | Chevron Oronite Company Llc | Lubricating oil composition for protection of silver bearings in medium speed diesel engines |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2097813B (en) * | 1981-05-06 | 1985-09-25 | Exxon Research Engineering Co | Glycerol esters in lubricating oils as fuel economy additives |
| AU549639B2 (en) * | 1981-07-01 | 1986-02-06 | Chevron Research Company | Lubricating oil composition to improve fuel economy |
| DE3376016D1 (en) * | 1982-04-22 | 1988-04-21 | Exxon Research Engineering Co | Glycerol esters with oil-soluble copper compounds as fuel economy additives |
| US4617026A (en) * | 1983-03-28 | 1986-10-14 | Exxon Research And Engineering Company | Method for improving the fuel economy of an internal combustion engine using fuel having hydroxyl-containing ester additive |
| US4957651A (en) * | 1988-01-15 | 1990-09-18 | The Lubrizol Corporation | Mixtures of partial fatty acid esters of polyhydric alcohols and sulfurized compositions, and use as lubricant additives |
| US4952328A (en) * | 1988-05-27 | 1990-08-28 | The Lubrizol Corporation | Lubricating oil compositions |
| US4981602A (en) * | 1988-06-13 | 1991-01-01 | The Lubrizol Corporation | Lubricating oil compositions and concentrates |
| US4957649A (en) * | 1988-08-01 | 1990-09-18 | The Lubrizol Corporation | Lubricating oil compositions and concentrates |
| US4938881A (en) * | 1988-08-01 | 1990-07-03 | The Lubrizol Corporation | Lubricating oil compositions and concentrates |
| US5244591A (en) * | 1992-03-23 | 1993-09-14 | Chevron Research And Technology Company | Lubricating oil compositions for internal combustion engines having silver bearing parts |
| AU2001247771A1 (en) * | 2000-03-28 | 2001-10-08 | Chevron Oronite Company Llc | Oil compositions having improved fuel economy efficiency |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2527889A (en) * | 1946-08-19 | 1950-10-31 | Union Oil Co | Diesel engine fuel |
| US2911367A (en) * | 1957-07-01 | 1959-11-03 | Gulf Oil Corp | Mineral lubricating oil composition |
| US3251770A (en) * | 1962-05-03 | 1966-05-17 | Lubrizol Corp | Process for preparing boron-containing metal salts of phosphosulfurized polymer |
| US3273981A (en) * | 1963-07-16 | 1966-09-20 | Exxon Research Engineering Co | Anti-wear oil additives |
| GB1081311A (en) * | 1964-08-03 | 1967-08-31 | Lubrizol Corp | Metal salts of organic phosphorus acid mixtures |
| JPS5111122B2 (en) * | 1971-09-30 | 1976-04-09 | ||
| BE781637A (en) * | 1972-04-04 | 1972-07-31 | Labofina Sa | LUBRICATING COMPOSITIONS FOR ROTARY ENGINES. |
-
1979
- 1979-11-16 CA CA000340058A patent/CA1137463A/en not_active Expired
- 1979-12-11 FR FR7930353A patent/FR2444707B1/en not_active Expired
- 1979-12-12 DE DE19792949940 patent/DE2949940A1/en not_active Ceased
- 1979-12-17 JP JP16395979A patent/JPS5584395A/en active Pending
- 1979-12-18 GB GB7943456A patent/GB2038355B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015057279A1 (en) | 2013-10-18 | 2015-04-23 | Chevron Oronite Company Llc | Lubricating oil composition for protection of silver bearings in medium speed diesel engines |
| US9909079B2 (en) | 2013-10-18 | 2018-03-06 | Chevron Oronite Company Llc | Lubricating oil composition for protection of silver bearings in medium speed diesel engines |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5584395A (en) | 1980-06-25 |
| GB2038355A (en) | 1980-07-23 |
| FR2444707A1 (en) | 1980-07-18 |
| DE2949940A1 (en) | 1980-07-03 |
| GB2038355B (en) | 1983-05-11 |
| FR2444707B1 (en) | 1986-03-07 |
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