Lubricant composition for double-clutch gearbox

A lubricating oil composition and dual-clutch technology, applied in lubricating compositions, petroleum industry, etc., can solve the problems of low transmission efficiency and poor operability, and achieve the effects of excellent performance, low production cost and wide application range

Active Publication Date: 2012-11-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manual transmissions have high transmission efficiency but poor operability, whil

Method used

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  • Lubricant composition for double-clutch gearbox
  • Lubricant composition for double-clutch gearbox
  • Lubricant composition for double-clutch gearbox

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Lubricating oil composition (I), it comprises: 80.0wt% hydroisomerization dewaxing III group base oil No. 4 oil (component A); 10.0wt% polymethacrylate (component B); 1.5 wt% polyalpha-olefin (component C); 0.5 wt% trialkyldithiophosphate (component D); 0.25 wt% monooctadecyl phosphonate, 0.25 wt% boronated mono Glyceryl oleate (component E); 0.4wt% bis-nonyldiphenylamine, 0.4wt% di-n-butyl dithiocarbamate diisooctyl (component F); 3.0wt% molecular weight 2800 Polyisobutenyl succinimide, 3.0 wt% polyisobutenyl succinimide (component G) of boron-phosphating molecular weight 960; 0.5 wt% sulfurized alkyl salicylic acid calcium phosphate (component H); 0.2% by weight of thiadiazole stearylamine formaldehyde condensate (component I). The lubricating oil composition (II) is the same as the composition (I) except that 0.5wt% trialkyl dithiophosphate of component (D) is replaced by 0.5wt% trialkyl monothiophosphate. Lubricating oil composition (III) is the same as compositio...

Embodiment 2

[0027] Lubricating oil composition (V), it comprises: 94.1wt% hydroisomerization dewaxing III group base oil No. 6 oil (component A); 3.0wt% polymethacrylate (component B); 1.0 wt% polyalpha-olefin (component C); 0.2 wt% acid phosphate amine salt (component D); 0.20 wt% monooctadecyl phosphonate, 0.20 wt% borated dioleate Triol ester (component E); 0.10wt% bis-octyl diphenylamine, 0.10wt% di-n-octyl dithiocarbamate diisooctyl ester (component F); 0.5wt% boron phosphorus with molecular weight 2800 The polyisobutenyl succinimide of 0.5wt% molecular weight 960 polyisobutenylsuccinimide (component G); 0.05wt% calcium alkylbenzene sulfonate (component Part H); 0.05% by weight of thiadiazole dodecylamine formaldehyde condensate (component I). Lubricating oil composition (VI) removes component (E) 0.20wt% monooctadecyl phosphonate, 0.20wt% borated dioleate glycerol ester is replaced by 0.20wt% dioctadecylphosphine Ester, 0.20wt% borated glycerol dioleate instead, the rest are the s...

Embodiment 3

[0032] Additive composition (IX), it comprises: the polyalpha-olefin synthetic oil PAO-4 of 65.6wt%, the diester synthetic oil (component A) of 16.4wt%; The polymethacrylate (component A) of 9.9wt% B); 0.1 wt% polyalphaolefin (component C); 0.05 wt% trialkyl dithiophosphate, 0.40 wt% acid phosphate amine salt, 0.05 wt% dialkyl dithiophosphate Acrylates (component D); 0.10 wt% monooctadecyl phosphonate, 0.10 wt% borated glycerol monooleate (component E); 0.25 wt% dioctyl diphenylamine, 0.25wt% of diisooctyl di-n-octyl dithiocarbamate (component F); 3.0wt% of borophosphated polyisobutenyl succinimide with a molecular weight of 2800, 3.0wt% of polyisobutenyl succinimide with a molecular weight of 960 Isobutenyl succinimide (component G); 0.5 wt% of sulfurized alkylphenate calcium (component H) with a base value of 400mgKOH / g; 0.2 wt% of thiadiazole dodecylamine formaldehyde condensate (component I). The evaluation results of composition (IX) are listed in Table 3.

[0033] Tab...

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Abstract

The invention provides a lubricant composition for a double-clutch gearbox. The lubricant composition comprises: (A) at least a hydrofinishing III mineral oil with high viscosity index, or polyolefin cogasin, or ester cogasin, or any combination of the above components; (B) at least a viscosity index improver; (C) at least a pour-point depressant; (D) at least a phosphorus-containing antiwear additive; (E) at least a friction modifier; (F) at least a high-temperature anti-oxidant; (G) at least an ashless dispersant; (H) at least a metal detersive; and (I) at least a metal passivator. The above lubricant composition has excellent abrasion resistance, frictional characteristic, synchronization performance, antiwear endurance, high-temperature lubrication stability, antirust and anti-corrosive property, high and low temperature performance, shearing stability, cleaning dispersity, high-temperature anti-foaming property and micropoint corrosion resistance, passes through Vickers pump experiments, FAGFE-8 bearing wear experiments, SAE No.2 frictional characteristic experiments, TE92M anti-shake experiments, SSP-180 synchronous bench durability experiments, CEC L-45 taper roller shearing experiments, CEC L-84 thermooxidizing soundness experiments and FAV-54 mircopoint corrosion experiments, and simultaneously meets lubrication requirements of clutches, a synchronizer, gears and bearings in the double-clutch gearbox.

Description

(1) Technical field [0001] The invention relates to a lubricating oil composition, in particular to a lubricating oil composition for a dual-clutch gearbox, and belongs to the technical field of lubricating oil and lubricating oil additives. (2) Background technology [0002] In recent years, with the expansion of social production scale, worldwide oil shortage and rising fuel prices, the energy crisis has become increasingly serious, and energy conservation and environmental protection have become one of the topics of worldwide concern. Improving the transmission efficiency of vehicle transmission parts is one of the most critical factors to realize vehicle energy saving. Manual transmissions have high transmission efficiency but poor operability, while automatic transmissions are easy to operate but have low transmission efficiency. Dual-clutch gearboxes have both the advantages of manual gearboxes and automatic gearboxes, are easy to operate, have high transmission effic...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N40/04C10N30/12C10N30/06C10N30/18C10N30/04
Inventor 伏喜胜糜莉萍张立雷爱莲
Owner PETROCHINA CO LTD
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