WO2017031058A1 - Maintien du tbn sans cendre de lubrifiant - Google Patents

Maintien du tbn sans cendre de lubrifiant Download PDF

Info

Publication number
WO2017031058A1
WO2017031058A1 PCT/US2016/047036 US2016047036W WO2017031058A1 WO 2017031058 A1 WO2017031058 A1 WO 2017031058A1 US 2016047036 W US2016047036 W US 2016047036W WO 2017031058 A1 WO2017031058 A1 WO 2017031058A1
Authority
WO
WIPO (PCT)
Prior art keywords
lubricant
lubricant additive
urea
additive
engine
Prior art date
Application number
PCT/US2016/047036
Other languages
English (en)
Inventor
Howard S. Savage
Roger D. England
Corey W. TROBAUGH
Ryan E. DENTON
Original Assignee
Cummins Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cummins Inc. filed Critical Cummins Inc.
Publication of WO2017031058A1 publication Critical patent/WO2017031058A1/fr

Links

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
    • C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/0091—Treatment of oils in a continuous lubricating circuit (e.g. motor oil system)
    • 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
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/20—Compounds containing nitrogen
    • 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
    • C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/0008—Working-up used lubricants to recover useful products ; Cleaning with the use of adsorbentia
    • 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
    • C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/0016—Working-up used lubricants to recover useful products ; Cleaning with the use of chemical agents
    • 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/082—Inorganic acids or salts thereof containing nitrogen
    • 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/18—Ammonia
    • 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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/72—Extended drain
    • 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

Definitions

  • TBN total base number
  • ash-based chemicals participate in the combustion process and eventually decrease the usable life of the after-treatment systems.
  • Servicing and replacing after-treatment systems is time intensive and expensive. Because of their negative impact on the after-treatment filters, it is difficult to include a sufficient concentration of these metallic based chemicals for longer corrosion protection and longer oil drain intervals.
  • GB Patent No. 856,764 discloses a method of treatment of used marine diesel engine lubricating oil with ammonia either by injecting ammonia gas into the oil or by spraying the oil into an atmosphere of ammonia gas or by washing the oil with aqueous ammonia.
  • this method does not solve the problem of extending the lubricant life in a working engine as it concerns the lube oil already spent.
  • PCT Publication No. WO 2010/018389 discloses a method of extending the lubricant life in an internal combustion engine, which comprises feeding ammonia gas to the crankcase without it passing through an engine cylinder.
  • the crankcase gases are sampled and measured automatically for acidic species and the flow of ammonia gas into the crankcase is regulated automatically.
  • PCT Publication No. WO 2010/018389 also discloses feeding the ammonia gas into the engine intake.
  • ammonia gas is hazardous to the environment.
  • a first set of embodiments described herein relates to a method for extending lubricant life, comprising treating a lubricant with a lubricant additive which comprises an acid neutralizing compound (e.g., ammonium carbonate, ammonium bicarbonate, and ammonium hydroxide) or a precursor to ammonia (e.g., urea, ammonium carbonate, and ammonium bicarbonate), to neutralize acids from oil use and/or contamination by combustion condensates.
  • an acid neutralizing compound e.g., ammonium carbonate, ammonium bicarbonate, and ammonium hydroxide
  • a precursor to ammonia e.g., urea, ammonium carbonate, and ammonium bicarbonate
  • the lubricant of an internal combustion engine is treated in situ with an aqueous solution of urea, ammonium carbonate, ammonium bicarbonate, and/or ammonium hydroxide.
  • the lubricant is treated in a diesel engine in situ with the lubricant additive.
  • the lubricant is treated in a natural gas engine in situ with the lubricant additive.
  • the lubricant additive comprises urea. In one embodiment, the lubricant additive comprises an aqueous solution of urea. In one embodiment, a concentration of urea in the aqueous solution is about 30 to 35%.
  • the lubricant is treated in an internal combustion engine in situ with the lubricant additive, and wherein the lubricant additive produces ammonia by thermal decomposition of urea upon contacting hot lubricant.
  • the lubricant additive comprises ammonium carbonate.
  • the lubricant additive comprises an aqueous solution of ammonium carbonate.
  • the lubricant additive comprises ammonium bicarbonate. In one embodiment, the lubricant additive comprises an aqueous solution of ammonium bicarbonate.
  • the lubricant additive comprises ammonium hydroxide. In one embodiment, the lubricant additive comprises an aqueous solution of ammonium hydroxide.
  • the lubricant additive is in liquid form and is substantially free of ammonia gas.
  • the lubricant additive is substantially free of metal- based TBN boosters.
  • the lubricant additive is an ashless additive substantially free of ash forming compounds.
  • the lubricant is derived from synthetic oil, mineral oil, or a mixture thereof.
  • the lubricant is a used engine lubricant. In one embodiment, the lubricant is a new engine lubricant.
  • the treatment with the lubricant additive extends lubricant life by at least about 10%.
  • the lubricant additive increases the TBN of the lubricant by at least about 1 mg KOH/g.
  • an ion exchange or adsorption device is used for treating the lubricant.
  • the ion exchange or adsorption device is
  • Another set of embodiments described herein relates to an ashless oil system and a means for maintaining TBN, which would enable longer oil change intervals without risk to the engine system being lubricated and/or damage to the after- treatment system.
  • Still another set of embodiments described herein relates to treatment of lubricant with ammonia derived from urea, ammonium carbonate, ammonium
  • Ammonia in water as ammonium hydroxide provides base without ash associated with other caustics. Controlled additions of ammonia/ammonium hydroxide to the oil would neutralize acids and maintain TBN without adding ash forming compounds to the oil.
  • Still another set of embodiments described herein relates to use of a urea source on a vehicle that is processed and delivered on board to a lubricant to treat reactive species in the lubricant to increase oil drain interval.
  • an ion exchange or adsorption device is used for treating the lubricant.
  • the ion exchange or adsorption device is
  • a lubricant additive comprising a compound selected from the group consisting of urea, ammonium carbonate, ammonium
  • the urea source is a diesel exhaust fluid for reducing nitrogen oxide from an exhaust stream.
  • the method comprises contacting the diesel exhaust fluid with hot exhaust gas stream to produce ammonia by thermal decomposition of urea. [0029] In one embodiment, the method comprises processing and delivering the ammonia obtained on board to the lubricant.
  • Embodiments described herein relates to a method for extending lubricant life, comprising treating a lubricant with a lubricant additive which comprises an acid neutralizing compound (e.g., ammonium carbonate, ammonium bicarbonate, and ammonium hydroxide) or a precursor to ammonia (e.g., urea, ammonium carbonate, and ammonium bicarbonate), to neutralize acids from oil use and/or contamination by combustion condensates.
  • an acid neutralizing compound e.g., ammonium carbonate, ammonium bicarbonate, and ammonium hydroxide
  • ammonia e.g., urea, ammonium carbonate, and ammonium bicarbonate
  • the method can comprise, for example, treating the lubricant in an engine in situ with the lubricant additive.
  • the method can comprise, for example, treating the lubricant in an internal combustion engine in situ with the lubricant additive.
  • the method comprises treating the lubricant in a diesel engine in situ with the lubricant additive.
  • the method comprises treating the lubricant in a natural gas engine in situ with the lubricant additive.
  • the lubricant additive can comprise, for example, urea.
  • the lubricant additive comprises an aqueous solution of urea.
  • the concentration of urea in the aqueous solution can be, for example, about 10% to about 50%), about 20%) to about 40%, or about 30%> to about 35%.
  • the lubricant additive upon contacting of the lubricant additive with the hot lubricant in the engine, produces ammonia in situ by thermal decomposition of urea.
  • the lubricant additive can comprise, for example, ammonium carbonate.
  • the lubricant additive comprises an aqueous solution of ammonium carbonate.
  • the concentration of ammonium carbonate in the aqueous solution can be, for example, about 10% to about 50 %, about 20% to about 40%, or about 30%) to about 35%.
  • the lubricant additive upon contacting of the lubricant additive with the hot lubricant in the engine, the lubricant additive produces ammonia in situ by thermal decomposition of ammonium carbonate.
  • the lubricant additive can comprise, for example, ammonium
  • the lubricant additive comprises an aqueous solution of ammonium bicarbonate.
  • concentration of ammonium bicarbonate in the aqueous solution can be, for example, about 10% to about 50 %, about 20% to about 40%), or about 30% to about 35%.
  • the lubricant additive upon contacting of the lubricant additive with the hot lubricant in the engine, produces ammonia in situ by thermal decomposition of ammonium bicarbonate.
  • the lubricant additive can comprise, for example, ammonium
  • the lubricant additive comprises an aqueous solution of ammonium hydroxide.
  • concentration of ammonium hydroxide in the aqueous solution can be, for example, about 10% to about 50%, about 20% to about 40%, or about 30% to about 35%.
  • the lubricant additive can further comprise other ashless additives to provide lubrication, corrosion inhibition, or other functional needs.
  • the lubricant additive described herein can be, for example, in liquid form and is substantially free of ammonia gas. In certain implementations, the lubricant additive described herein is substantially free of liquid ammonia. In some embodiments, the lubricant additive described herein is substantially free of ammonium phosphate.
  • the lubricant additive described herein can be, for example,
  • the lubricant additive described herein is an ashless additive substantially free of ash forming compounds. In some embodiments, the lubricant additive described herein is substantially free of metal species.
  • the method described herein does not comprise the injection of ammonia gas into a crankcase of an engine. In some embodiments, the method described herein does not comprise the injection of ammonia gas into an engine intake.
  • the amount of the lubricant additive to be added to the engine lubricant can be, for example, controlled to be proportional to the propensity of the engine operating condition to produce acidic blow-by gases or to thermally degrade the oil.
  • duty cycle parameters can be used for high thermal degradation to control additive delivery.
  • the amount of the lubricant additive to be added to the engine lubricant can be, for example, controlled to be proportional to the pH of the lubricant.
  • the amount of the lubricant additive to be added to the engine lubricant can be, for example, controlled to be proportional to the temperature of the lubricant.
  • the amount of the lubricant additive to be added to the engine lubricant can be, for example, controlled to be proportional to the separable aqueous fluid content of the lubricant.
  • the amount of the lubricant additive to be added to the engine lubricant can be, for example, controlled to be proportional to the electrical conductivity of the lubricant.
  • the lubricant is derived from synthetic oil.
  • the lubricant is derived from mineral oil.
  • the lubricant can also be, for example, derived from a mixture of synthetic oil and mineral oil.
  • the lubricant is a used engine lubricant, i.e., the lubricant has been run through an engine system undergoing an internal combustion process.
  • the lubricant can be, for example, a used engine lubricant in need of boosting TBN.
  • the lubricant is a new engine lubricant.
  • the treatment with the lubricant additive described herein can increase the initial TBN of a used engine lubricant by, for example, at least about 1 mg KOH/g, at least about 2 mg KOH/g, at least about 3 mg KOH/g, or at least about 4 mg KOH/g.
  • the treatment with the lubricant additive described herein can increase the initial TBN of a new engine lubricant by, for example, at least about 1 mg KOH/g, at least about 2 mg KOH/g, at least about 3 mg KOH/g, or at least about 4 mg KOH/g.
  • the treatment with the lubricant additive can extend life of a used engine lubricant by, for example, at least about 10%, at least about 20%, at least about 50%, or at least about 100%.
  • the treatment with the lubricant additive described herein can extend life of a new engine lubricant by, for example, at least about 10%>, at least about 20%, at least about 50%), or at least about 100%>.
  • the treatment with the lubricant additive described herein can increase standard oil drain intervals for an internal combustion engine by, for example, at least about 10%), at least about 20%, at least about 50%, or at least about 100%, compared to the treatment with a conventional oil additive based on one or more metallic TBN boosters.
  • the treatment with the lubricant additive described herein can increase standard oil drain intervals for a diesel or natural gas engine by, for example, at least about 10%, at least about 20%, at least about 50%, or at least about 100%), compared to the treatment with a conventional oil additive based on one or more metallic TBN boosters.
  • an ion exchange or adsorption device is used for treating the lubricant.
  • the ion exchange or adsorption device can be periodically regenerated by contacting the lubricant additive described herein.
  • Additional embodiments described herein relates to use of a urea source on a vehicle that is processed and delivered on board to a lubricant to treat reactive species in the lubricant to increase oil drain interval.
  • the urea source can be, for example, a diesel exhaust fluid which is typically used for reducing nitrogen oxide from an exhaust stream. Upon contacting of the diesel exhaust fluid with hot exhaust gas stream, ammonia can be produced by the thermal decomposition of urea. The ammonia obtained can be processed and delivered on board to a lubricant to treat reactive species in the lubricant to increase oil drain interval.
  • the terms “substantially,” “substantial,” and “about” are used to describe and account for small variations.
  • the terms can refer to instances in which the event or circumstance occurs precisely as well as instances in which the event or circumstance occurs to a close approximation.
  • the terms can refer to less than or equal to ⁇ 10%, such as less than or equal to ⁇ 5%, less than or equal to ⁇ 4%, less than or equal to ⁇ 3%, less than or equal to ⁇ 2%, less than or equal to ⁇ 1%, less than or equal to ⁇ 0.5%, less than or equal to ⁇ 0.1%), or less than or equal to ⁇ 0.05%.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Lubricants (AREA)

Abstract

L'invention concerne un procédé permettant de prolonger la vie d'un lubrifiant, comprenant le traitement d'un lubrifiant à l'aide d'un additif lubrifiant qui comprend un composé choisi dans le groupe constitué par l'urée, le carbonate d'ammonium, le bicarbonate d'ammonium et l'hydroxyde d'ammonium pour neutraliser les acides provenant de l'utilisation et/ou de la contamination d'une huile par combustion des condensats. Par exemple, le lubrifiant d'un moteur à combustion interne peut être traité in situ avec une solution aqueuse d'urée, de carbonate d'ammonium, de bicarbonate d'ammonium et/ou d'hydroxyde d'ammonium. L'invention concerne également un procédé permettant de prolonger la vie d'un lubrifiant, comprenant l'utilisation d'une source d'urée sur un véhicule qui est traitée et distribuée à bord à un lubrifiant pour traiter des espèces réactives dans le lubrifiant afin d'augmenter l'intervalle de vidange d'huile.
PCT/US2016/047036 2015-08-17 2016-08-15 Maintien du tbn sans cendre de lubrifiant WO2017031058A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562205948P 2015-08-17 2015-08-17
US62/205,948 2015-08-17

Publications (1)

Publication Number Publication Date
WO2017031058A1 true WO2017031058A1 (fr) 2017-02-23

Family

ID=58051201

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2016/047036 WO2017031058A1 (fr) 2015-08-17 2016-08-15 Maintien du tbn sans cendre de lubrifiant

Country Status (1)

Country Link
WO (1) WO2017031058A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320162A (en) * 1964-05-22 1967-05-16 Phillips Petroleum Co Increasing the base number of calcium petroleum sulfonate
US3909427A (en) * 1974-09-06 1975-09-30 Phillips Petroleum Co Additives for lubricants and motor fuels
US4992187A (en) * 1989-11-15 1991-02-12 Petro Chemical Products, Inc. Composition for cleaning an internal combustion engine
US6642191B2 (en) * 2001-11-29 2003-11-04 Chevron Oronite Company Llc Lubricating oil additive system particularly useful for natural gas fueled engines
US20040235684A1 (en) * 2001-06-29 2004-11-25 Cook Stephen J. Lubricant from water in oil emulsion with suspended solid base
US20040266630A1 (en) * 2003-06-25 2004-12-30 The Lubrizol Corporation, A Corporation Of The State Of Ohio Novel additive composition that reduces soot and/or emissions from engines
US20100101213A1 (en) * 2007-02-21 2010-04-29 Volvo Lastvagnar Ab On-board-diagnosis method for an exhaust aftertreatment system and on-board-diagnosis system for an exhaust aftertreatment system
US20120216510A1 (en) * 2007-05-02 2012-08-30 Ford Global Technologies, Llc Vehicle-Based Strategy for Removing Urea Deposits from an SCR Catalyst
WO2014074197A1 (fr) * 2012-09-11 2014-05-15 The Lubrizol Corporation Composition lubrifiante contenant un renforçateur de tbn exempt de cendres
EP1535986B1 (fr) * 2003-11-17 2015-02-25 ChevronTexaco Japan Ltd Composition d'huile lubrifiante pour transmissions automatiques

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320162A (en) * 1964-05-22 1967-05-16 Phillips Petroleum Co Increasing the base number of calcium petroleum sulfonate
US3909427A (en) * 1974-09-06 1975-09-30 Phillips Petroleum Co Additives for lubricants and motor fuels
US4992187A (en) * 1989-11-15 1991-02-12 Petro Chemical Products, Inc. Composition for cleaning an internal combustion engine
US20040235684A1 (en) * 2001-06-29 2004-11-25 Cook Stephen J. Lubricant from water in oil emulsion with suspended solid base
US6642191B2 (en) * 2001-11-29 2003-11-04 Chevron Oronite Company Llc Lubricating oil additive system particularly useful for natural gas fueled engines
US20040266630A1 (en) * 2003-06-25 2004-12-30 The Lubrizol Corporation, A Corporation Of The State Of Ohio Novel additive composition that reduces soot and/or emissions from engines
EP1535986B1 (fr) * 2003-11-17 2015-02-25 ChevronTexaco Japan Ltd Composition d'huile lubrifiante pour transmissions automatiques
US20100101213A1 (en) * 2007-02-21 2010-04-29 Volvo Lastvagnar Ab On-board-diagnosis method for an exhaust aftertreatment system and on-board-diagnosis system for an exhaust aftertreatment system
US20120216510A1 (en) * 2007-05-02 2012-08-30 Ford Global Technologies, Llc Vehicle-Based Strategy for Removing Urea Deposits from an SCR Catalyst
WO2014074197A1 (fr) * 2012-09-11 2014-05-15 The Lubrizol Corporation Composition lubrifiante contenant un renforçateur de tbn exempt de cendres

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CATERPILLAR, CAT COMMERCIAL DIESEL ENGINE FLUIDS RECOMMENDATIONS., December 2010 (2010-12-01), pages 1 - 98, XP055365084 *

Similar Documents

Publication Publication Date Title
US6851414B2 (en) Method and system to extend lubricant life in internal combustion EGR systems
EP1357280A3 (fr) Dispositif et méthode de traitement des vapeurs de carburant pour moteur à combustion interne à injection directe
McGeehan et al. Gasoline engine camshaft wear: the culprit is blow-by
ATE414756T1 (de) Verfahren zum betreiben einer brennkraftmaschine
SG123692A1 (en) Dispersant reaction product with antioxidant capability
US20140165942A1 (en) Engine-lubricant octane boost to quiet sporadic pre-ignition
ATE493570T1 (de) Verfahren zur eliminierung von im schmieröl eines verbrennungsmotors enthaltenem kraftstoff und ein solches verfahren einsetzender motor
ATE530743T1 (de) Verfahren und vorrichtung zur entfrostung eines abgasbearbeitungszusatzes
WO2011022266A3 (fr) Composition lubrifiante contenant un agent anti-usure
WO2014105311A3 (fr) Lubrifiants à ultra faible teneur en cendres sulfatées, phosphore et soufre pour des moteurs à combustion interne
EP1479752A3 (fr) Lubrifiant à faible émission avec une protection améliorée contre la corrosion
EP1967256A1 (fr) Phosphore de dégazage, sulfure et plomb d'échappement de combustion utilisant des composants de tungstène et du lubrifiant
WO2017031058A1 (fr) Maintien du tbn sans cendre de lubrifiant
ATE475798T1 (de) Verfahren und vorrichtung zur erkennung eines kontinuierlichen kraftstoffeintrags in das schmieröl einer brennkraftmaschine beim kaltstart
SG132648A1 (en) A lubricating oil composition
KR20040100879A (ko) 윤활원에서 연료 연소장치로의 기상을 경유한유기몰리브덴의 전달
WO2011148164A1 (fr) Procédé de nettoyage d'un moteur
CN103525523B (zh) 一种适用于闭式循环柴油机的润滑剂
SG146521A1 (en) Supplying tungsten to a combustion system or combustion system exhaust stream containing iron
CN103571594B (zh) 净化罐装沼气发动机专用润滑剂
RU2122568C1 (ru) Композиция к топливам
WO2009046976A3 (fr) Additifs contenant du cérium pour des compositions lubrifiantes et leur procédé de préparation
Watson et al. Controlling lubricant acidity with an oil conditioning filter
Meng et al. The impact of alkaline additives on the performance of lubricating oil
US20110284033A1 (en) Cleaning of natural gas ash deposits from combustion chambers

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16837653

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16837653

Country of ref document: EP

Kind code of ref document: A1