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Lubricant composition for preventing pre-ignition

A lubricating composition and composition technology, applied in the direction of lubricating composition, petroleum industry, additives, etc., can solve the problems of negative impact on the performance of lubricating composition, shortening service life and oil change interval, etc.

Inactive Publication Date: 2021-10-08
TOTAL MARKETING SERVICES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These phenomena tend to negatively affect all the properties of the lubricating composition, especially its performance, thereby shortening its service life and / or oil change intervals

Method used

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  • Lubricant composition for preventing pre-ignition
  • Lubricant composition for preventing pre-ignition
  • Lubricant composition for preventing pre-ignition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0178] Embodiment 1: the preparation of lubricating composition

[0179] Lubricating compositions A0 to A3 were prepared.

[0180] Their kinematic viscosity at 100° C. was determined according to standard ISO 3104, and their autoignition propensity properties were measured.

[0181] The details of the compositions are listed in Table 2 below, where the proportions of the various compounds are expressed in mass percent.

[0182]

[0183] Table 2

[0184] *Additive packages are mixtures of different additives that are common and commercially available in the lubricant field. It includes zinc dithiophosphate type antiwear additives, calcium and magnesium based detergents and PIBSI type dispersants.

[0185] In each of the compositions thus prepared, the amount of calcium was 1350 ppm by weight and the amount of magnesium was 300 ppm by weight.

[0186] (1) The amount of boron in composition A1 is 160 ppm by weight.

[0187] (2) The amount of boron in composition A2 wa...

Embodiment 2

[0192] Example 2: Evaluation of LSPI performance of lubricating compositions

[0193] The onset temperature of the exothermic reaction (ignition temperature) of the reference oil and the lubricating composition of Example 1 was measured according to the measurement method defined above (laboratory method for pre-ignition propensity).

[0194] The results are given in Table 3 below.

[0195] combination Ignition temperature [°C] A0 (reference) 196 A1 (this invention) 208 A2 (this invention) 209.5 A3 (the present invention) 209

[0196] table 3

[0197] Compositions A1 to A3 according to the invention comprising at least one boron derivative have higher ignition temperatures than the same composition not comprising any boron derivative required according to the invention (reference composition A).

[0198]These measurements thus make it possible to demonstrate that the addition of at least one boron derivative to an aged lubricating ...

Embodiment 3

[0205] Embodiment 3: the preparation of lubricating composition

[0206] Lubricating compositions B0 to B2 were prepared.

[0207] Their kinematic viscosity at 100° C. is determined according to standard ISO 3104.

[0208] The details of the compositions are listed in Table 5 below, where the proportions of the various compounds are expressed in mass percent.

[0209]

[0210] table 5

[0211] *Additive packages are mixtures of different additives that are common and commercially available in the lubricant field. It includes zinc dithiophosphate type antiwear additives, calcium and magnesium based detergents and PIBSI type dispersants.

[0212] (1) The amount of boron in composition B0 was 180 ppm by weight.

[0213] (2) The amount of boron in composition B1 is 45 ppm by weight.

[0214] (3) The amount of boron in composition B2 is 450 ppm by weight.

[0215] Compositions were prepared by mixing the compounds detailed in Table 5 at a temperature of about 30-40°C. ...

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Abstract

The present invention relates to the use of a lubricant composition comprising (i) at least one boron derivative; and (ii) at least one base oil, for preventing and / or reducing pre-ignition, in particular at low speed, in a vehicle engine, wherein said composition is used during at least one change interval without the addition of a new lubricant composition, the content of boron in the composition being between 150 ppm and 350 ppm by weight.

Description

technical field [0001] The present invention relates to the field of lubricants particularly useful in vehicle engines, in particular lubricating compositions enabling the prevention or reduction of pre-allumage in the engine. Background technique [0002] Under ideal conditions, normal combustion in an engine by spark ignition occurs when a fuel mixture, especially a fuel mixture of fuel and air, is ignited by a spark generated by a spark plug in a combustion chamber inside a cylinder. This normal combustion is generally characterized by the expansion of the flame front through the combustion chamber in an orderly and controlled manner. [0003] However, in some cases, the air / fuel mixture may be ignited prematurely via the flame source before it is ignited by the spark from the spark plug, resulting in a phenomenon known as pre-ignition. [0004] Rather, it is preferable to reduce or even eliminate pre-ignition, since pre-ignition typically results in a significant increa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M139/00C10M125/26C10N10/04C10N30/02C10N40/25C10N60/02C10N60/14
CPCC10M125/26C10M139/00C10M2201/087C10M2215/28C10M2227/061C10M2203/1025C10M2205/0285C10M2215/064C10M2207/026C10M2207/289C10M2205/04C10M2223/045C10N2030/02C10N2010/04C10N2040/255C10N2020/02C10M2205/06C10N2060/02C10N2060/14C10M169/04C10M129/68C10M133/16C10M2207/28C10M2215/086C10N2010/06C10N2030/04C10N2030/10C10N2070/00
Inventor S·法尤莱G·帕品
Owner TOTAL MARKETING SERVICES SA