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Method of operating internal combustion engine by introducing detergent into combustion chamber

a technology of detergent and combustion chamber, which is applied in the direction of additives, lubricant compositions, liquid carbonaceous fuels, etc., can solve the problems that the formulating of engine lubricating oil with increased amounts of additives cannot always meet the requirements of increased performance, and achieve the effect of improving the performance of the lubricating oil

Inactive Publication Date: 2005-09-29
THE LUBRIZOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0018] It is an object of the present invention to improve the performance of both a fuel composition and a lubricating oil of an internal combustion engine.
[0019] Another object of this invention is to improve the performance a fuel composition and a lubricating oil of a compression-ignited or spark-ignited direct injection internal combustion engine having an exhaust gas recirculation system.
[0020] A further object of the invention is to improve the performance of a fuel composition and a lubricating oil of a spark-ignited or compression-ignited internal combustion engine having an exhaust treatment device and a lubricating oil that has at least one of the properties selected from the group consisting of a phosphorus content below 0.1% by weight, a sulfur content below 0.5% by weight, and a sulfated ash content below 1.5% by weight.

Problems solved by technology

Formulating an engine lubricating oil with increased amounts of additives to meet increased performance requirements is not always possible due to limitations such as allowable sulfur, phosphorus and metal content as well as performance issues from high levels of additives such as seal compatibility with high levels of dispersants.

Method used

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  • Method of operating internal combustion engine by introducing detergent into combustion chamber
  • Method of operating internal combustion engine by introducing detergent into combustion chamber
  • Method of operating internal combustion engine by introducing detergent into combustion chamber

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Embodiment Construction

[0035] A method of the present invention of operating an internal combustion engine comprises introducing a nitrogen-containing detergent composition that comprises (A) a reaction product of a hydrocarbyl-substituted acylating agent and an amine; (B) a hydrocarbyl-substituted amine; (C) a Mannich reaction product of a hydrocarbyl-substituted hydroxy-containing aromatic compound, an aldehyde, and an amine; (D) a high molecular weight polyetheramine prepared by reacting one unit of a hydroxy-containing hydrocarbyl compound with two or more units of butylene oxide to form a polyether intermediate, and aminating the polyether intermediate by reacting the polyether intermediate with an amine or with acrylonitrile and hydrogenating the reaction product of the polyether intermediate and acrylonitrile; or (E) a mixture thereof into a combustion chamber of the engine during the operation of the engine wherein the detergent composition improves the performance of a lubricating oil of the engi...

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Abstract

In a method of operating an internal combustion engine, a nitrogen-containing detergent composition is introduced into a combustion chamber of the engine wherein the detergent composition can improve the performance of both a fuel composition and a lubricating oil of the engine. The detergent composition contains (A) a reaction product of a hydrocarbyl-substituted acylating agent and an amine, (B) a hydrocarbyl-substituted amine, (C) a Mannich reaction product, (D) a high molecular weight polyetheramine, or (E) a mixture thereof.

Description

[0001] This application claims the benefit of U.S. Provisional Application Nos. 60 / 368354 filed 28 Mar. 2002 and 60 / 441012 filed 17 Jan. 2003.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention comprises a method of operating an internal combustion engine that comprises introducing a nitrogen-containing detergent composition into a combustion chamber during the operation of the engine. The method results in improved performance of a lubricating oil of the engine and also improves performance of a fuel composition when the detergent composition is present in the fuel composition. [0004] 2. Description of the Related Art [0005] Current and future performance requirements and exhaust emission requirements for internal combustion engines are necessitating new and improved lubricating oil formulations and methods of lubrication for engines. [0006] Longer intervals between engine oil drains lessen demands for disposal and effects on the environment, b...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10M133/02
CPCC10M133/08C10M133/16C10M133/56C10M149/12C10M159/16C10M2215/042C10N2240/104C10M2215/28C10M2217/04C10M2217/043C10N2230/06C10N2240/10C10N2240/102C10M2215/086C10N2030/06C10N2040/25C10N2040/252C10N2040/255
Inventor MACKNEY, DEREK W.MACDUFF, MALCOLM G. J.ARTERS, DAVID C.BARBOUR, ROBERT H.CALDER, RAYMOND M.DUNCAN, DAVID A.DOGLIO, JAMES A.JACKSON, MITCHELL M.DALY, DANIEL T.LAMB, GORDON D.
Owner THE LUBRIZOL CORP
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