Use of a lubricating composition

a technology of lubricating composition and composition, which is applied in the direction of lubricant composition, additives, combustion engines, etc., can solve the problems of excessive vibration and even engine damage, and achieve the effect of reducing the fuel flow requirement of spark-ignition internal combustion engines and reducing brake specific fuel consumption

Inactive Publication Date: 2018-02-08
SHELL OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0016]According to a further aspect of the present invention there is provided a method for reducing the fuel flow requirement of a spark-ignition internal combustion engine, the method comprising lubricating the engine with a lubricating composition, wherein the method further comprises a step of adding an anti-knock additive to the lubricating composition, wherein the anti-knock additive is an aromatic amine.
[0017]According to a further aspect of the present invention there is provided a method for reducing the brake specific fuel consumption of a spark-ignition internal combustion engine, the method comprising a step of adding an anti-knock additive to the lubricating composition, wherein the anti-knock additive is an aromatic amine.

Problems solved by technology

Sparks occurring too soon or too late in the engine cycle are responsible for excessive vibrations and even engine damage.

Method used

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  • Use of a lubricating composition
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Examples

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example 1

[0135 consisted of the same reference oil used in Comparative Example 1 with the addition of anti-knock additive 1,2,3,4-tetrahydroquinoline (THQ) (commercially available from Sigma Aldrich) dissolved in Priolube 1940. 742 g of THQ was dissolved in 1.5 litres of Priolube 1940. This was added to the oil of Comparative Example 1 so as to provide a concentration of anti-knock additive in the sump of approximately 10 wt % (assuming the sump is 8 litres).

[0136]Example 2 consisted of the same reference oil used in Comparative Example 1 with the addition of anti-knock additive N-methyl aniline, commercially available from Sigma Aldrich) dissolved in Priolube 1940. 742 g of N-methyl aniline (750 ml) was dissolved in 1.5 litres of Priolube 1940 (50 wt %). This was added to the reference oil of Comparative Example 1 so as to provide a concentration of anti-knock additive in the sump of approximately 10 wt % (assuming the sump volume is 8 litres).

[0137]The fuel used in the following experiment...

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Abstract

The present invention relates to a method for advancing the spark timing of a spark-ignited internal combustion engine, the method comprising lubricating the spark-ignited internal combustion engine with a lubricating composition comprising base oil and an anti-knock additive, wherein the anti-knock additive is an aromatic amine.

Description

FIELD OF THE INVENTION[0001]The present invention relates to the use of a lubricating composition for providing spark timing advance of a spark-ignited internal combustion engine. The present invention further relates to a method for advancing the spark timing of a spark-ignition internal combustion engine.BACKGROUND OF THE INVENTION[0002]Under ideal conditions, normal combustion in a conventional spark-ignition internal combustion engine occurs when a mixture of fuel and air is ignited within the combustion chamber inside the cylinder by the production of a spark originating from a spark plug. Such normal combustion is generally characterised by the expansion of the flame front across the combustion chamber in an orderly and controlled manner.[0003]Ignition timing in a spark-ignition internal combustion engine is the process of setting the angle relative to piston position and crankshaft angular velocity that a spark will occur in the combustion chamber near the end of the compress...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10M133/12
CPCC10M133/12C10M2215/06C10N2240/104C10N2230/54C10M2215/223C10M2215/221C10M2215/064C10M2215/062C10M2215/066C10N2030/00C10N2030/54C10N2040/255Y02T10/40
Inventor ORLEBAR, CAROLINE NICOLAMORGAN, NEAL MATTHEWSOUTHBY, MARK CLIFT
Owner SHELL OIL CO
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