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Lubricating oil

A technology for lubricating oil and base oil, which is applied in the field of lubricating oil to reduce the difficulty of low-temperature startup, facilitate unified management, and effectively utilize resources

Inactive Publication Date: 2012-10-10
SHANGHAI SANY HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Before the present invention, the inventor found that the prior art had at least the following problems: the single-stage lubricating oil was greatly affected by the seasons and could not be used in all seasons; Grade oil, due to its poor viscosity-temperature stability, after a certain period of operation, the viscosity-temperature stability is greatly reduced, and it cannot meet the requirements of all-season general use
[0005]The formula of conventional diesel engine oil contains a large amount of calcium-containing detergent and dispersant and zinc-containing anti-wear agent, which has a certain negative impact on the hydraulic system; although some hydraulic The system can use conventional engine oil, but because of its poor viscosity-temperature characteristics and low viscosity index, the performance is average, and it cannot solve the problems encountered by current hydraulic excavators

Method used

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Embodiment 1

[0038] Contains 82.5 wt% base oil and 15.5 wt% viscosity index improver, wherein the kinematic viscosity of the lubricating oil at 40°C is 68 mm 2 / s, kinematic viscosity at 100°C is 13 mm 2 / s.

[0039] Such as figure 1 The low temperature viscosity curves of the universal oil and HV32, HV46, HV68 No. hydraulic oil, 10W engine oil, conventional SAE 10W-40 shown in the embodiment of the present invention, and figure 2 The high-temperature viscosity curves of the general-purpose oil of the present invention shown in the embodiment of the present invention and HV32, HV46, HV68 hydraulic oil, 10W machine oil, and conventional SAE 10W-40, wherein, HV32, HV46, HV68, that is, VG32, VG46, VG68 hydraulic oil The viscosity index of the oil is 150, the viscosity index of 10W engine oil is 114, and the viscosity index of SAE 10W-40 engine oil is 140. The general oil of this embodiment, that is, the lubricating oil can meet the requirements of diesel engine oil and hydraulic oil VG qu...

Embodiment 2

[0041] Including 79.5 wt% base oil and 18.5 wt% viscosity index improver, wherein the kinematic viscosity of the lubricating oil at 40°C is 70 mm 2 / s, kinematic viscosity at 100°C is 14 mm 2 / s. It meets the requirements of diesel engine oil and hydraulic oil VG quality grade, and the application temperature range covers VG32, VG46, VG68 hydraulic oil standard oil and diesel engine oil.

Embodiment 3

[0043] Contains 84 wt% base oil and 15.5 wt% viscosity index improver, wherein the kinematic viscosity of the lubricating oil at 40°C is 69 mm 2 / s, kinematic viscosity at 100°C is 12 mm 2 / s. It meets the requirements of diesel engine oil and hydraulic oil VG quality grade, and the application temperature range covers VG32, VG46, VG68 hydraulic oil standard oil and diesel engine oil.

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Abstract

The invention provides lubricating oil, which belongs to the technical field of oil products for machines, and comprises 75-85 wt % of base oil and 10-20 wt % of a viscosity index improver. According to the invention, the used oil type is reduced, thereby facilitating the unified management and the effective application of resources; the viscosity index is greatly increased, an effect of low-temperature low viscosity and high-temperature and high viscosity is achieved, the working conditions of a diesel engine and a hydraulic oil system are satisfied, and the problem of difficult starting at low temperature and low efficiency at high temperature is reduced. When the lubricating oil is used as hydraulic oil, the operating efficiency and the economy of fuel oil can be improved, and various performances are greatly improved and the service life is prolonged greatly.

Description

technical field [0001] The invention relates to an oil product, in particular to an all-season and universal lubricating oil suitable for lubricating systems and hydraulic systems. Background technique [0002] The diesel engine lubrication system and hydraulic system of hydraulic excavators have different requirements for lubricating oil due to the difference in structure and function. The viscosity of lubricating oil (engine oil, hydraulic oil) is greatly affected by temperature. In order to provide the best lubrication for the equipment, when the excavator operates in different climatic conditions, the original equipment manufacturer generally chooses different lubricating oils for different systems. For example, diesel engine oil 10W, 10W-30, 15W-40, etc. are used in engine lubrication systems; hydraulic oils are VG32, VG46, VG68, etc., used in hydraulic systems. Multiple different products are used together, resulting in difficulties in inventory management, after-sal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M159/00C10M161/00C10N40/08C10N40/25
Inventor 曹东辉王宁辉李坤
Owner SHANGHAI SANY HEAVY IND
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