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Lubricating oil composition for diesel engines

A lubricating oil composition, diesel engine technology, applied in the field of lubricating oil compositions for diesel engines, can solve the problems of not achieving good volatility, engine oil heat load increase, etc., to achieve good volatility and engine cleaning characteristics, Fuel saving effect

Active Publication Date: 2018-08-21
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there has not been enough satisfaction to achieve suppression of deposit formation, indication of fuel economy and maintenance of performance over long periods of time
Also, it looks like future downsizing of commercial vehicles with diesel engines by adding supercharging will keep going, and thermal loads on engine oil can be expected to increase
But there has been the problem that good volatility has not been achieved with prior art lubricating oil compositions

Method used

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  • Lubricating oil composition for diesel engines
  • Lubricating oil composition for diesel engines
  • Lubricating oil composition for diesel engines

Examples

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example

[0059] The invention is explained further below by means of examples of embodiment and comparative examples, but the invention is not limited by these examples in any way.

[0060] The raw materials used in the examples of the Examples are as follows. The properties of the various base oils are shown in Table 1.

[0061] base oil

[0062] ●Base oil 1: XHVI 4 (GTL oil)

[0063] ●Base oil 2: XHVI 8 (GTL oil)

[0064] ●Base oil 3: XHVI 3 (GTL oil)

[0065] ●Base oil 4: Yubase 4 (mineral oil)

[0066] ●Base oil 5: Yubase 8 (mineral oil)

[0067] ●Base oil 6: Yubase 3 (mineral oil)

[0068] Additive package

[0069] DH-2DI Package 1: As shown in the table, in the example of the example, when 14.00% is added, the boron content of the lubricating oil becomes 0.033 wt% {including boron-containing dispersant (borated alkyl toluene sulfonic acid Calcium) and boron-containing detergent (borated succinate dispersant), and other additives in the same amount as DI package 2 and ...

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Abstract

The invention provides a lubricating oil composition for diesel engines which contains a GTL base oil with a kinematic viscosity at 100 DEG C of 4.5 to 5.5 mm2 / s, a comblike PMA (polymethacrylate) based viscosity index improver and a boron-containing dispersant and / or boron-containing detergent, the total content of the boron-containing dispersant and / or boron-containing detergent in terms of conversion to boron content relative to the total amount of the composition being not less than 0.025 mass%, and which satisfies 0W-30 or 5W-30 in the SAE J300 standard.

Description

technical field [0001] The present invention relates to motor oils for automobiles (lubricating oil compositions for internal combustion engines), and more particularly, to lubricating oil compositions for diesel engines having excellent fuel efficiency, oil consumption control, and detergency. Background technique [0002] One problem with crankcase lubricating oils is that the lubricating oil tends to escape from the crankcase due to so-called blow-by. Blow-by gas, or a gas / lubricating oil mixture of this type, is preferably recirculated in the engine rather than vented to the atmosphere. In some engines, this type of recirculation occurs by injecting blow-by gas into the engine's intake system so that lubricating oil is combusted in the piston chambers. The recirculation of blow-by gas solves the emission problem, but on the other hand, there is the possibility of problems that can arise because deposits can form in the intake system. For example, if deposits form in an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04
CPCC10M169/044C10M2203/1025C10M2205/0206C10M2205/022C10M2205/028C10M2205/04C10M2205/173C10M2207/282C10M2207/34C10M2209/084C10M2219/044C10N2030/02C10N2030/10C10N2030/54C10N2030/68C10N2030/74C10N2040/252C10N2060/14C10M2205/06C10N2020/071C10N2020/02C10M105/34C10M145/14C10M169/04C10M109/00C10M143/10C10M143/12C10N2030/04
Inventor 上田真央羽生田清志
Owner SHELL INT RES MAATSCHAPPIJ BV