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Composition for cooling and lubricating a drive system of a vehicle

A technology of composition and mixture, which is applied in the direction of lubricating composition, base material, thickener, etc., can solve the problems of unsatisfactory cooling potential and unguaranteed lubrication level, etc., and achieve good cooling performance, easy preparation, and good stability sexual effect

Pending Publication Date: 2020-07-03
TOTAL MARKETING SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such fluids do not ensure a good level of lubrication
Conversely, high-viscosity compositions that ensure a good level of lubrication and protect the components in contact from wear have an unsatisfactory cooling potential

Method used

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  • Composition for cooling and lubricating a drive system of a vehicle
  • Composition for cooling and lubricating a drive system of a vehicle
  • Composition for cooling and lubricating a drive system of a vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0165] Preparation of lubricating compositions (CL) according to the invention and comparative compositions (CC)

[0166] The components of the composition were mixed according to the properties and amounts (expressed in mass percent) of the products shown in Table 1 below.

[0167]

[0168] (1) by Evonik under the trade name Comb polymethacrylate polymer sold in 3-200;

[0169] (2) Trade name by Infineum 261 is a star hydrogenated copolymer of styrene, butadiene and isoprene.

[0170] Table 1

[0171] The properties of the compositions thus prepared are shown in Table 2.

[0172] CL1 CL2 CC1 KV100-ISO 3104 (mm 2 .s -1 ) *

6.10 5.95 5.90

[0173] *Kinematic viscosity measured at 100°C according to standard ISO3104

[0174] Table 2

Embodiment 2

[0176] Measurement of thermal properties of compositions according to the invention

[0177] One way to measure the thermal properties of a fluid is to measure the heat transfer coefficient (heat transfer per unit surface area and temperature) of the fluid. Fluids with higher heat transfer coefficients have better cooling properties.

[0178] Tests to measure the heat transfer coefficients of each of the compositions described in Table 1 were performed.

[0179] The principle of the test consists in injecting an oil jet by means of a nozzle perpendicular to the induction heated metal plate. A thermal imaging camera placed above the plate records the temperature profile during oil injection. The average heat transfer coefficient of the composition can be calculated from the temperature change on this plate.

[0180] Various parameters can be varied, notably the temperature of the plates, the size of the nozzles and the pressure at which the oil is ejected. Measurements of...

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Abstract

The present invention relates to the use, for cooling and lubricating a drive system of an electric or hybrid vehicle, of a composition having a kinematic viscosity, measured at 100 DEG C according tostandard ASTM D445, of between 3 and 10 mm2 / s, comprising at least: - from 70% to 90% of a base oil, or a mixture of base oils, having a kinematic viscosity, measured at 100 DEG C according to standard ASTM D445, ranging from 1.5 to 8 mm2 / s and selected from polyalphaolefins; and - at least one thickening polymer.

Description

technical field [0001] The present invention relates to the field of compositions for lubricating and cooling drive systems of electric or hybrid vehicles. The present invention aims in particular to propose a composition having both lubricating and cooling properties for use in drive systems of electric or hybrid vehicles, in particular for cooling and lubricating electric motors. Background technique [0002] for CO reduction 2 Emissions and also the evolution of international standards aimed at reducing energy consumption are forcing car manufacturers to come up with alternative solutions to the internal combustion engine. [0003] One of the solutions confirmed by the automaker is to replace the internal combustion engine with an electric motor. for CO reduction 2 Research on emissions has thus led a number of automotive companies to develop electric vehicles. [0004] The term "electric vehicle" within the meaning of the present invention refers to a vehicle compris...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N40/25C10N40/04C10N60/02C10N20/02C10N40/14
CPCC10M169/041C10M2205/022C10M2205/024C10M2205/028C10M2205/0285C10M2205/04C10M2205/06C10M2209/084C10N2020/069C10N2020/071C10N2020/073C10N2020/02C10N2040/04C10N2040/14C10N2040/25C10N2060/02C10M169/02C10M107/02C10M119/02C10M119/12C10M2205/003C10M2205/006C10M2205/046C10M2205/066C10M2209/006
Inventor J·古林
Owner TOTAL MARKETING SERVICES
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