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Environment protection type phosphate free engine oil

An engine oil and environmental protection technology, applied in the petroleum industry, additives, lubricating compositions, etc., can solve the problems of three-way catalyst poisoning, etc., and achieve the effects of high cost performance, good compatibility, and convenient use

Inactive Publication Date: 2004-12-15
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since zinc dialkyldithiophosphate (ZDDP) contains a large amount of phosphorus, it will poison the three-way catalyst

Method used

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  • Environment protection type phosphate free engine oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Embodiment 1: Using VG100 # Base oil as benchmark, in VG100 # In the base oil, first add the ashless detergent dispersant T-154 (polyisobutenyl succinimide) with a total amount of 7.5% (percentage by weight), the overbased calcium sulfonate ash detergent dispersant, and the defoamer , fully reconcile, and then divide the above oil sample into two equal parts, which are recorded as 0 # ,1 # . 0 # Add 2% (weight ratio) zinc dialkyldithiophosphate (ZDDP) anti-oxidation and anti-wear multi-effect agent in the sample again, 1 # Add 2% (weight ratio) of fluorinated graphite anti-wear agent and 0.5% alkyl diphenylamine antioxidant to the sample, fully reconcile, prepare an engine oil containing no phosphorus compound, and carry out differential thermal analysis (DSC) resistance Oxidation performance test, the results are shown in Table 1:

[0009]

Embodiment 2

[0010] Embodiment 2: Using VG32 # Urea dewaxed base oil as benchmark, in VG32 # In the urea dewaxed base oil, first add ashless detergent and dispersant T-154 (polyisobutenyl succinimide) with a total amount of 7.5%, overbased calcium sulfonate with ash detergent and dispersant, and defoamer. Fully reconcile, then add 2% fluorinated graphite anti-wear agent and 0.5% alkyl diphenylamine antioxidant to the above oil samples respectively, fully reconcile, prepare engine oil containing phosphorus-free compounding agent, carry out high-temperature cleaning and dispersing agent and anti-oxidant Oxidation rapid coke plate test, the results are shown in Table 2:

[0011] project

first trial

second test

third test

Phosphorus-free engine oil of the present invention

2

2

2

[0012] 1. Engine oil rating: 1 is the best, 10 is the worst

[0013] 2. Tentative criteria for engine oil quality evaluation: high-grade (SG / SH / SJ...

Embodiment 3

[0016] Embodiment three: using a certain amount of VG10 # Light dewaxed oil (its pour point is -40°C, viscosity at -25°C is 86mm 2 / s, flash point (open) 162°C) and a certain amount of high-viscosity bright oil (VG1000 # , pour point -8°C, flash point above 250°C), according to the empirical formula for lubricating oil blending, blend 5W / 20 Newton base oil.

[0017] In the above base oil, based on the amount of base oil, first add ashless detergent and dispersant T-154 (polyisobutenyl succinimide) with a total amount of 7.5%, overbased calcium sulfonate with ash detergent Dispersant, antifoaming agent, fully reconcile, then add 2% nanometer fluorinated graphite anti-wear agent and 0.5% alkyl diphenylamine antioxidant to the above oil sample respectively, fully reconcile, and prepare engine oil containing phosphorus-free compounding agent . The above-mentioned environmentally friendly engine oil was added to the engines of two new Santana cars (BG1021 and BL9328 respectively...

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Abstract

The environment protecting phosphate-free engine oil consists of base oil, ash-free clear dispersant, high alkali ashed calcium sulfonate dispersant and defoaming agent, and features that it contains also fluorinated graphite as antiwear agent in 2 wt% and alkyl dianiline as antioxidant in 0.5 wt%. The environment protecting phosphate-free engine oil has the functions of resisting wear, reducing friction, resisting oxidation and resisting corrosion. In addition, the two kinds of additive, antiwear agent and antioxidant, are well compatible with the other components. The present invention has low cost, convenient use and high performance / cost ratio.

Description

technical field [0001] The invention relates to an environment-friendly phosphorus-free engine oil. Background technique [0002] Since the 1990s, domestic and foreign harmful substances in automobile exhaust (CO, NO X , unburned hydrocarbons, etc.) emission control is becoming more and more stringent. In order to reduce emissions, the engine uses an exhaust emission catalyst (three-way) oxidation to convert harmful exhaust emissions into harmless substances, thereby reducing pollution. However, the three-way catalysts (such as platinum, rhodium, palladium, etc.) currently used in engines are easily poisoned by phosphorus-containing elements, resulting in loss of catalytic function. [0003] Automobile engine oil Since the 1940s, in order to improve the anti-coking performance of engine oil, reduce wear and prolong the service life of automobiles, a large number of additives have been added to the formula of engine oil, such as detergent and dispersant, anti-oxidant and an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M127/00
Inventor 陶德华
Owner SHANGHAI UNIV
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