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Special lubricating oil for fuel gas engine of public transport automobile

A gas engine and lubricating oil technology, applied in the field of lubricating oil, can solve problems that restrict the promotion, development and use of public natural gas vehicles, affect the operating efficiency of enterprises, and increase the production costs of enterprises, so as to prolong the anti-oxidation time and improve wear resistance And surface repair effect, the effect of extending the oil change interval

Active Publication Date: 2015-02-11
陕西通用润滑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the high price of natural gas engine lubricating oil on the market (1 / 3 higher than ordinary gasoline engine oil), ordinary gasoline engine oil is still used in practice, so that the oil change cycle is not long enough (generally 9000-10000 kilometers, only dual-purpose fuel The dual-purpose fuel engine lubricating oil used by buses has an oil change cycle of 18,000 to 25,000 kilometers), which increases the production cost of the enterprise, increases the parking days, and affects the operating efficiency of the enterprise. This will inevitably restrict the promotion, development and use

Method used

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  • Special lubricating oil for fuel gas engine of public transport automobile
  • Special lubricating oil for fuel gas engine of public transport automobile
  • Special lubricating oil for fuel gas engine of public transport automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Taking 1000g of blended base oil used in the preparation of special lubricating oil for bus gas engines as an example, its raw material composition and preparation method are as follows:

[0033]

[0034] The blended base oil mentioned above is formed by mixing 200g of base oil 250N, 600g of base oil 600N, and 200g of base oil 150BS.

[0035] The preparation method of the above-mentioned special lubricating oil for bus gas engines is as follows: stir sulfurized alkyl phenate calcium T115B and high alkali value synthetic calcium sulfonate T106D at 50°C for 20 minutes to obtain mixture A; Diimide T154B and borated polyisobutylene succinimide T154C with a number average molecular weight of 1000 were stirred at 50°C for 20 minutes to obtain mixture B; alkylated phenyl-α-naphthylamine T531, p, p' Octyldiphenylamine L101 and hindered phenolic antioxidant T501 were stirred at 50°C for 20 minutes to obtain mixture C; molybdenum dialkyldithiocarbamate and nano-copper particle...

Embodiment 2

[0037] Taking 1000g of blended base oil used in the preparation of special lubricating oil for bus gas engines as an example, its raw material composition and preparation method are as follows:

[0038]

[0039] The above blended base oil is prepared by mixing 170g of base oil 250N, 700g of base oil 600N, and 130g of base oil 150BS.

[0040] The preparation method of the special lubricating oil for bus gas engines is the same as in Example 1.

Embodiment 3

[0042] Taking 1000g of blended base oil used in the preparation of special lubricating oil for bus gas engines as an example, its raw material composition and preparation method are as follows:

[0043]

[0044]

[0045] The above blended base oil is prepared by mixing 100g of base oil 250N, 800g of base oil 600N, and 100g of base oil 150BS.

[0046] The preparation method of the special lubricating oil for bus gas engines is the same as in Example 1.

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Abstract

The invention discloses special lubricating oil for a fuel gas engine of a public transport automobile. The special lubricating oil is prepared from blended base oil, binary ethylene-propylene rubber, polymethacrylate, alkylphenol calcium sulfide, high-base-number calcium alkylbenzenesulfonate, polyisobutylene succinimide, boronated polyisobutylene succinimide, alkylated phenyl-alpha-naphthylamine, p,p'-dioctyl diphenylamine, a hindered phenol type antioxidant, dialkyl molybdenum dithiocarbamate, copper nanoparticle anti-wear additives, methyl silicone oil and thiadiazole polysulfide. According to the lubricating oil composition oil product, the sulfate ash content is lower than 0.5%, the content of phosphorus is lower than 0.03%, and the base number is 3-8mgKOH / g. According to the special lubricating oil for the fuel gas engine of the public transport automobile, aiming at the special requirements of the public transport automobile on engine oil, different additive varieties and charging sequences are adopted, so that physical and chemical indicators and use performance of the special lubricating oil are better than natural gas engine lubricating oil of the same grade, and the special lubricating oil has excellent cleaning and dispersion properties, lubricating property, abrasion resistance and oxidation resistance.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and in particular relates to a lubricating oil for a natural gas engine of a bus. Background technique [0002] Urban public transport vehicles have the special operating characteristics of frequent starting and stopping, large load changes, and low average driving speed. Frequent starting makes the engine run at low speed and high torque for a long time, and the engine speed increases from idle speed to high speed and then drops to The running time at low speed increases, the oil viscosity becomes lower under high temperature conditions, the friction and wear of the engine accelerates, and the heat load increases, which makes the engine prone to oxidation, generating sludge, reducing oxidation resistance, cleaning and dispersibility, and shortening the oil change cycle. Therefore, bus engine oil must have better cleansing and dispersibility, lubricating properties, anti-wear and anti-oxi...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N40/25C10N30/10C10N30/06C10N30/04
Inventor 王稳闫少伟王龙尹兴林李先贞董元虎杨超
Owner 陕西通用润滑科技有限公司
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