KR20130006177A - Compositions of manual transmission oil and dual clutch transmission oil for enhanced fuel efficiency - Google Patents
Compositions of manual transmission oil and dual clutch transmission oil for enhanced fuel efficiency Download PDFInfo
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- KR20130006177A KR20130006177A KR1020110068064A KR20110068064A KR20130006177A KR 20130006177 A KR20130006177 A KR 20130006177A KR 1020110068064 A KR1020110068064 A KR 1020110068064A KR 20110068064 A KR20110068064 A KR 20110068064A KR 20130006177 A KR20130006177 A KR 20130006177A
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- dual clutch
- manual transmission
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/02—Well-defined hydrocarbons
- C10M105/04—Well-defined hydrocarbons aliphatic
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
- C10M137/04—Phosphate esters
- C10M137/10—Thio derivatives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
- C10M145/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M145/10—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate
- C10M145/12—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate monocarboxylic
- C10M145/14—Acrylate; Methacrylate
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
Abstract
Description
본 발명은 폴리알파올레핀 합성 기유와 점도조정제를 함유하고 있는 수동 변속기 오일 및 듀얼 클러치 변속기 오일 조성물에 관한 것이다.
The present invention relates to a manual transmission oil and a dual clutch transmission oil composition containing a polyalphaolefin synthetic base oil and a viscosity modifier.
일반적으로, 변속기는 클러치와 추진축 또는 클러치와 종감속기어장치 사이에 설치되어 엔진의 동력을 자동차의 주행상태에 알맞도록 회전력과 속도를 바꾸어 구동바퀴에 전달하는 장치를 말한다. 수동변속기/DCT는 동력을 단속하기 위하여 필요한 클러치 조작과 주행조건에 따라 기어변속을 통해 엔진으로부터 전달되는 회전속도 및 회전력을 변화시켜 구동륜에 전달하여 운전자가 요구하는 속도와 토크를 얻게 된다. In general, the transmission is a device that is installed between the clutch and the propulsion shaft or the clutch and the reduction gear device to transmit the power of the engine to the driving wheel by changing the rotational force and speed to suit the driving state of the vehicle. The manual transmission / DCT changes the rotational speed and rotational force transmitted from the engine through gear shifting according to the clutch operation and driving conditions necessary to control the power and transmits it to the driving wheels to obtain the speed and torque required by the driver.
수동변속기/DCT에 적용되는 오일의 점도와 마찰계수는 변속기 내부 부품들의 작동에 있어서 저항으로 작용하며, 이는 곧 동력을 전달하는 효율을 나쁘게 하고 차량의 연비를 떨어뜨리는 부정적인 효과를 나타낸다. 이를 극복하기 위해 단순히 점도를 낮추는 경우 변속기 자체의 래틀노이즈 및 내구성이 나빠지고, 경계 또는 극압영역에서의 마찰계수를 저감시 싱크로나이저 변속기구를 통한 변속시스템의 충격, 변속지연 또는 싱크로나이저 변속기구의 내구성에 심각한 문제를 야기할 수 있다.
The viscosity and friction coefficient of the oil applied to the manual transmission / DCT act as a resistance in the operation of the transmission's internal components, which has a negative effect on the power transmission efficiency and the vehicle's fuel economy. In order to overcome this problem, if the viscosity is lowered simply, the rattle noise and durability of the transmission itself become worse, and when the friction coefficient in the boundary or extreme pressure range is reduced, the shock of the transmission system, the transmission delay or the durability of the synchronizer transmission mechanism are reduced. Can cause serious problems.
이에, 본 발명은 상기와 같은 문제점을 해결하기 위하여 노력한 결과, 기유로 폴리알파올레핀 합성기유(Poly Alpha Olefin, PAO), 점도지수향상제로 수평균 분자량이 200,000-600,000의 폴리알킬메타크릴레이트를 사용하여 다른 수동변속기오일 대비 유체윤활에서의 마찰계수가 낮은 수동 변속기오일 및 듀얼클러치 변속기 오일 조성물을 개발함으로써 본 발명을 완성하게 되었다.Accordingly, the present invention, as a result of the efforts to solve the above problems, poly alpha olefin synthetic base oil (Poly Alpha Olefin, PAO) as a base oil, polyalkyl methacrylate having a number average molecular weight of 200,000-600,000 as a viscosity index improver The present invention was completed by developing a manual transmission oil and a dual clutch transmission oil composition having a low friction coefficient in fluid lubrication compared to other manual transmission oils.
본 발명의 수동 변속기오일 및 듀얼 클러치 변속기오일은 수동 변속기에서 요구하는 높은 내구성 및 낮은 래틀 노이즈 현상을 충족시키며, 동시에 유체 윤활영역에서의 마찰계수가 낮아 연비를 향상시킬 수 있다.
The manual transmission oil and the dual clutch transmission oil of the present invention satisfy the high durability and low rattle noise phenomenon required in the manual transmission, and at the same time, the friction coefficient in the fluid lubrication region can be improved to improve fuel economy.
따라서 본 발명은 폴리알파올레핀(PAO) 합성 기유, 점도지수향상제 및 첨가제를 포함하는 수동변속기오일 및 듀얼클러치 변속기오일 조성물을 제공하려는 것을 목적으로 한다.
Accordingly, an object of the present invention is to provide a manual transmission oil and a dual clutch transmission oil composition comprising a polyalphaolefin (PAO) synthetic base oil, a viscosity index improver and an additive.
본 발명의 다른 목적 및 이점은 하기의 발명의 상세한 설명, 청구범위 및 도면에 의해 보다 명확하게 된다.
Other objects and advantages of the present invention will become more apparent from the following detailed description of the invention, claims and drawings.
본 발명의 일양태에 따르면, 본 발명은 폴리알파올레핀(PAO) 합성 기유 65-90 중량%, 점도지수향상제 5-20 중량%, 및 첨가제 3-20 중량%를 포함하는 수동변속기 및 듀얼클러치 변속기 오일 조성물을 제공한다.According to one aspect of the present invention, the present invention provides a manual transmission and a dual clutch transmission comprising 65-90 wt% of polyalphaolefin (PAO) synthetic base oil, 5-20 wt% of viscosity index improver, and 3-20 wt% of additive. It provides an oil composition.
본 발명에 따른 수동변속기 오일 및 듀얼클러치 변속기 오일 조성물은 수동변속기의 내구성 및 래틀노이즈 저감 및 연비를 향상시킬 수 있다.The manual transmission oil and the dual clutch transmission oil composition according to the present invention can improve the durability and the rattle noise reduction and the fuel efficiency of the manual transmission.
본 발명의 바람직한 구현예에 따르면, 본 발명의 폴리알파올레핀(PAO) 합성 기유는 100℃에서 평균 동점도 3-6cSt이고 점도지수(Viscosity Index)가 130 이상이며, 유동점이 -60℃ 이하인 것을 특징으로 한다.According to a preferred embodiment of the present invention, the polyalphaolefin (PAO) synthetic base oil of the present invention has an average kinematic viscosity of 3-6 cSt at 100 ° C, a Viscosity Index of 130 or more, and a pour point of -60 ° C or less. do.
본 발명의 바람직한 구현예에 따르면, 본 발명의 상기 점도지수향상제는 폴리알킬메타크릴레이트는 4-10개의 C12-C15의 고분자 사슬인 것을 특징으로 한다. According to a preferred embodiment of the present invention, the viscosity index improver of the present invention is characterized in that the polyalkyl methacrylate is a polymer chain of 4-10 C 12 -C 15 .
보다 바람직하게는 상기 점도지수향상제는 수평균 분자량이 200,000-600,000의 폴리알킬메타크릴레이트이며, 폴리알킬메타크릴레이트는 최소한 4개 더욱 바람직하게는 4-10개의 고분자 사슬을 갖고, 그 고분자 사슬은 C12-C15 알킬메타크릴레이트 60-80 중량%를 포함하고 2-에틸헥실메타크릴레이트를 20-40중량% 포함한다.More preferably, the viscosity index improver is a polyalkyl methacrylate having a number average molecular weight of 200,000-600,000, and the polyalkyl methacrylate has at least 4 more preferably 4-10 polymer chains, and the polymer chain is 60-80 wt% C 12 -C 15 alkylmethacrylate and 20-40 wt% 2-ethylhexyl methacrylate.
본 발명의 바람직한 구현예에 따르면, 상기 폴리알킬메타크릴레이트는 100℃ 동점도가 650 cSt 이상인 것을 특징으로 한다.According to a preferred embodiment of the present invention, the polyalkyl methacrylate is characterized in that the 100 ℃ kinematic viscosity of 650 cSt or more.
본 발명의 바람직한 구현예에 따르면, 상기 첨가제는 내마모제, 금속계 청정분산제, 인산에스테르계 마찰조정제, 비스 숙신이미드형 무회계 분산제 또는 극압첨가제이다. 보다 바람직하게는 상기 내마모제는 디티오인산아연이고, 상기 금속계 청정분산제는 칼슘 술포네이트이고, 상기 극압첨가제는 폴리설파이드이다.
According to a preferred embodiment of the present invention, the additive is an antiwear agent, a metal-based clean dispersant, a phosphate ester friction modifier, a bis succinimide type ashless dispersant or an extreme pressure additive. More preferably, the antiwear agent is zinc dithiophosphate, the metallic clean dispersant is calcium sulfonate, and the extreme pressure additive is polysulfide.
본원 발명의 특징 및 이점을 요약하면 다음과 같다.The features and advantages of the present invention are summarized as follows.
(i) 본 발명의 폴리알파올레핀 합성 기유, 점도지수향상제 및 첨가제를 포함하는 수동변속기 오일 및 듀얼클러치 변속기오일 조성물은 수동변속기 또는 듀얼클러치의 내구성을 향상시킨다. (i) The manual transmission oil and dual clutch transmission oil composition comprising the polyalphaolefin synthetic base oil, viscosity index enhancer and additives of the present invention improve the durability of the manual transmission or dual clutch.
(ii) 본 발명의 조성물을 사용하면 변속기 자체의 래틀노이즈가 줄어들며, 유체윤활영역의 마찰계수가 낮아 연비가 크게 향상되는 이점을 가진다.
(ii) The use of the composition of the present invention has the advantage that the rattle noise of the transmission itself is reduced, and the fuel efficiency is greatly improved because the friction coefficient of the fluid lubrication region is low.
이하 본 발명을 더욱 자세하게 설명하겠다.Hereinafter, the present invention will be described in more detail.
베이스오일(Base Oil)로 폴리알파올레핀(PAO) 합성 기유를 사용하고, 여기에 점도지수향상제로 수평균 분자량이 200,000-600,000의 폴리알킬메타크릴레이트가 특정 함량으로 함유되어, 내구성, 래틀노이즈 저감 및 기타성능(전단안정성, 마찰특성 열안정성, 산화안정성)이 향상되고, 특히 유체윤활영역에서의 마찰계수를 저감하여 연비를 향상시킬 수 있는 수동변속기 오일 및 듀얼 클러치 변속기 오일 조성물에 관한 것이다.Use base oil synthetic polyalphaolefin (PAO) base oil, and it contains polyalkyl methacrylate of 200,000-600,000 number average molecular weight as a viscosity index improver to reduce durability and rattle noise. And other transmission oils and dual clutch transmission oil compositions which can improve fuel efficiency by reducing frictional coefficients in the fluid lubrication region and improving other performances (shear stability, friction characteristics, thermal stability, and oxidative stability).
이러한 본 발명의 조성물질 각각에 대하여 더욱 상세하게 설명을 하겠다.Each of the compositions of the present invention will be described in more detail.
우선 본 발명의 조성물질 중 하나인 기유는 100℃의 평균 동점도가 3 - 6cSt 이고 점도지수가 130 이상이며 유동점이 -60℃ 이하인 폴리알파올레핀 합성기유를 사용하는 것이 바람직하다. 이때 상기 기유의 100℃ 동점도가 3cSt 이하이면 고온 조건하에서 증발량이 과대하여 오일 사용량을 증대시키는 문제가 있고, 6cSt 초과시 저온에서의 점도 증가가 심해 저온에서 변속성 저하와 연비가 나빠지는 문제점이 발생하는바, 상기 범위의 동점도를 갖는 것을 사용하는 것이 바람직하다. 이의 사용량은 수동변속기 오일 및 듀얼 클러치 변속기 오일 조성물 전체 중량에 대하여 65-90중량% 가 좋다. 보다 바람직하게는 78-80 중량%가 좋다.
First of all, the base oil, which is one of the compositional compositions of the present invention, preferably uses a polyalphaolefin synthetic base oil having an average kinematic viscosity of 100 ° C. of 3-6 cSt, a viscosity index of 130 or more, and a pour point of −60 ° C. or less. At this time, if the 100 ° C kinematic viscosity of the base oil is 3 cSt or less, there is a problem in that the amount of evaporation is increased due to excessive evaporation under high temperature conditions. It is preferable to use those having a kinematic viscosity in the above range. Its usage amount is preferably 65-90% by weight based on the total weight of the manual transmission oil and the dual clutch transmission oil composition. More preferably 78-80% by weight.
다음으로 본 발명의 조성물질 중 하나인 점도지수향상제는 수동변속기유의 점도를 높이고, 저온에서의 점도 상승을 억제하는 역할을 하여 점도지수를 높일 수 있다. 폴리알킬메타크릴레이트는 최소한 4개 더욱 바람직하게는 4-10개의 고분자 사슬을 갖고, 그 고분자 사슬은 C12-C15 알킬메타크릴레이트 60-80 중량%를 포함하고 2-에틸헥실메타크릴레이트를 20-40중량% 포함하는 것이 바람직하다. 이 폴리알킬메타크릴레이트는 100℃ 동점도가 650cSt 이상인 것이 바람직하며, 사용량은 전체 중량 대비 12-14 중량%가 적당한데, 11 중량% 미만이면 상온 및 고온에서 적절히 점도를 높이지 못하며 저온에서 과도한 점도상승을 유발하고, 14 중량%를 초과하면 고온 및 저온에서의 점도가 같이 높아지고, 내구 진행 시 전단에 의한 점도 저하를 유발하여 내구성이 떨어지는 문제가 발생한다.
Next, the viscosity index improver, which is one of the compositions of the present invention, increases the viscosity of the manual transmission oil, and serves to suppress the increase in viscosity at low temperatures, thereby increasing the viscosity index. The polyalkyl methacrylates have at least 4 more preferably 4-10 polymer chains, the polymer chains comprising 60-80% by weight of C 12 -C 15 alkyl methacrylate and 2-ethylhexyl methacrylate It is preferable to include 20 to 40% by weight. It is preferable that the polyalkyl methacrylate has a kinematic viscosity of 100 ° C. or higher and 650 cSt or higher. The amount of polyalkyl methacrylate is preferably 12-14% by weight based on the total weight. If it causes an increase and exceeds 14% by weight, the viscosity at high temperature and low temperature is increased as well, causing a decrease in durability due to shearing at the time of durability, resulting in a problem of poor durability.
또한 상기 수동변속기오일 조성물에 일반적으로 첨가되는 첨가제가 첨가될 수 있다. 첨가제는 전체 수동변속기 오일 조성물에 대하여 8 - 12 중량% 첨가하는 것이 바람직하며. 첨가제는 구체적으로 내마모제, 금속계 청정분산제, 인산에스테르계 마찰조정제, 비스 숙신이미드 (bis succinimide)형 무회계 분산제 또는 극압첨가제를 단독 또는 혼합하여 사용할 수 있다.In addition, additives generally added to the manual transmission oil composition may be added. The additive is preferably added in an amount of 8 to 12% by weight based on the total manual transmission oil composition. Specifically, the additive may be used alone or in combination with an anti-wear agent, a metal-based clean dispersant, a phosphate ester friction modifier, a bis succinimide type ashless dispersant, or an extreme pressure additive.
내마모제는 디티오인산아연인 것이 바람직하고, 금속계 청정분산제는 칼슘 술포네이트인 것이 바람직하며, 극압첨가제로 폴리설파이드를 사용하는 것이 바람직하다.
The antiwear agent is preferably zinc dithiophosphate, the metal clean dispersant is preferably calcium sulfonate, and polysulfide is preferably used as the extreme pressure additive.
하기에서, 본 발명을 실시예에 의거하여 더욱 구체적으로 설명하겠다. 그러나 다음 실시예에 의하여 본 발명이 한정되는 것은 아니다.
In the following, the present invention will be described in more detail based on examples. However, the present invention is not limited by the following examples.
실시예Example
실시예 1 - 3 및 비교예 1 - 5 : 수동변속기 오일 및 듀얼 클러치 변속기 오일 조성물의 제조 Examples 1-3 and Comparative Examples 1-5: Preparation of Manual Transmission Oil and Dual Clutch Transmission Oil Composition
하기 표 1과 같은 조성을 60 - 80℃ 조건하에서 교반 혼합하여 수동변속기 오일 및 듀얼 클러치 변속기 오일 조성물을 제조하였다.To prepare a manual transmission oil and a dual clutch transmission oil composition by stirring and mixing the composition shown in Table 1 under 60-80 ℃ conditions.
시험예Test Example : 동점도, 유체윤활 마찰계수 확인 : Check kinematic viscosity, fluid lubrication friction coefficient
상기 실시예 1 - 3 및 비교예 1 - 5 에서 제조한 수동변속기 오일 및 듀얼 클러치 변속기 오일 조성물을 사용하여 동점도는 ASTM D 445 에 따라 시험하였다.The kinematic viscosity was tested according to ASTM D 445 using the manual transmission oil and dual clutch transmission oil compositions prepared in Examples 1-3 and Comparative Examples 1-5.
유체윤활 마찰특성 시험은 Mini Traction Measurement 장비를 사용하여 측정 하였다.The fluid lubrication friction test was performed using a Mini Traction Measurement instrument.
상기 표 2에 나타낸 바와 같이, 비교예 1, 3는 고온점도 및 유체윤활 마찰계수가 높아 연비 측면에서 불리하였다. 비교예 2, 4 는 유체윤활 마찰계수가 높아 연비 측면에서 불리하였다. 비교예 5는 고온에서의 점도가 낮아 내구성 및 래틀노이즈 측면에서 불리하며, 유체윤활 마찰계수 역시 높았다. 실시예 1-3은 고온에서의 점도가 9-10 cSt으로 변속기의 내구성을 만족하고 래틀노이즈 측면에서도 양호한 수준을 나타내는 점도(9 cSt 이상)이며, 유체윤활 마찰계수가 100℃에서는 0.0195 이하, 40℃에서는 0.0345 이하의 낮은 수치를 나타내어 비교예 대비 연비 측면에서 우수한 점도 특성을 보이는 것을 확인할 수 있었다.
As shown in Table 2, Comparative Examples 1 and 3 were disadvantageous in terms of fuel efficiency due to the high temperature viscosity and the fluid lubrication friction coefficient. Comparative Examples 2 and 4 were disadvantageous in terms of fuel efficiency due to the high fluid lubrication coefficient of friction. Comparative Example 5 has a low viscosity at high temperatures and is disadvantageous in terms of durability and rattle noise, and also has a high coefficient of fluid lubrication friction. Example 1-3 is a viscosity at high temperature of 9-10 cSt, which satisfies the durability of the transmission and shows a good level in terms of rattle noise (9 cSt or more), and the fluid lubrication friction coefficient is 0.0195 or less at 100 ° C, 40 It was confirmed that the excellent viscosity characteristics in terms of fuel economy compared to the comparative example by showing a low value of 0.0345 or less at ℃.
이상으로 본 발명의 특정한 부분을 상세히 기술하였는바, 당업계의 통상의 지식을 가진 자에게 있어서 이러한 구체적인 기술은 단지 바람직한 구현예일뿐, 이에 본 발명의 범위가 제한되는 것이 아닌 점은 명백하다. 따라서 본 발명의 실질적인 범위는 첨부된 청구항과 그의 등가물에 의하여 정의된다고 할 것이다.Having described the specific part of the present invention in detail, it is apparent to those skilled in the art that such a specific technology is only a preferred embodiment, and the scope of the present invention is not limited thereto. Therefore, the substantial scope of the present invention will be defined by the appended claims and equivalents thereof.
Claims (8)
A manual transmission and a dual clutch transmission oil composition comprising 65-90% by weight of polyalphaolefin (PAO) synthetic base oil, 5-20% by weight of viscosity index enhancer, and 3-20% by weight of additive.
The composition of claim 1, wherein the base oil has an average kinematic viscosity of 3-6 cSt at 100 ° C., a viscosity index of 130 or more, and a pour point of −60 ° C. or less.
The composition of claim 1, wherein the viscosity index improver is a polyalkyl methacrylate.
The composition of claim 3, wherein the polyalkyl methacrylate has 4-10 C 12 -C 15 polymer chains.
The composition of claim 4, wherein the C 12 -C 15 polymer chain comprises 60-80 wt% alkyl methacrylate and 20-40 wt% 2-ethylhexyl methacrylate.
5. The composition of claim 3, wherein the polyalkyl methacrylate has a 100 ° C. kinematic viscosity of at least 650 cSt. 6.
The composition of claim 1, wherein the additive is a mixture of one or more of an antiwear agent, a metal-based dispersant, a phosphate ester friction modifier, a bis succinimide type ashless dispersant, or an extreme pressure additive.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112226262A (en) * | 2020-07-22 | 2021-01-15 | 郑州市久润润滑油有限责任公司 | Fully-synthetic dry type dual-clutch transmission oil and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112226262A (en) * | 2020-07-22 | 2021-01-15 | 郑州市久润润滑油有限责任公司 | Fully-synthetic dry type dual-clutch transmission oil and preparation method thereof |
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