KR20030004880A - Continuously Variable Transmission Fluid (CVTF) Formulation - Google Patents

Continuously Variable Transmission Fluid (CVTF) Formulation Download PDF

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KR20030004880A
KR20030004880A KR1020010040617A KR20010040617A KR20030004880A KR 20030004880 A KR20030004880 A KR 20030004880A KR 1020010040617 A KR1020010040617 A KR 1020010040617A KR 20010040617 A KR20010040617 A KR 20010040617A KR 20030004880 A KR20030004880 A KR 20030004880A
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continuously variable
variable transmission
formula
content
ppm
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KR1020010040617A
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KR100435362B1 (en
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김점섭
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현대자동차주식회사
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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
    • 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
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

PURPOSE: Provided is a continuously variable transmission oil composition which has an improved friction coefficient and abrasion resistance and improves the torque transmission. CONSTITUTION: The continuously variable transmission oil composition comprises at least one of ZDDP (Zincdialkyl dithiophosphate) of formula(1), in which R1, R2, R3 and R4 represent independently an alkyl group having 1 to 20 carbon atoms, Y represents S, S-S, S-S-S, S-S-S-S, S-(CH2)-m-S(m is an integer), or S-CH2-CH(CH3)-S, having a Zn content of 500 to 700 ppm and calcium phenolate of formula(2), in which R1 and R2 represent independently an alkyl group having 1 to 14 carbon atoms, having a Ca content of 1000 to 1300 ppm.

Description

무단변속기유 조성물{Continuously Variable Transmission Fluid (CVTF) Formulation}Continuously Variable Transmission Fluid (CVTF) Formulation}

본 발명은 무단변속기유 조성물에 관한 것으로서, 더욱 상세하게는 종래 ATF에 Zn 함량기준으로 500 내지 700ppm의 ZDDP(Zincdialkyldithiophosphate) 또는 Ca 함량기준으로 1000 내지 1300ppm의 Ca 페놀산염을 추가적으로 포함하는 무단변속기유 조성물에 관한 것이다.The present invention relates to a continuously variable transmission oil composition, and more particularly, a continuously variable transmission oil composition further comprising 1000 to 1300 ppm Ca phenolate based on ZDDP (Zincdialkyldithiophosphate) or Ca content based on Zn content in conventional ATF. It is about.

벨트식 무단변속기는 자동변속기 탑재차량 대비 연비가 향상되기 때문에 최근 판매대수가 증가하기 시작했다. 이러한 벨트식 무단변속기는 큰 토르크 전달 능력이 요구되어 종래에는 1600cc이하의 소형차에만 국한되어 적용되었다.최근 밸트의 개선에 의하여 2000cc급 차량에도 탑재가 가능해졌지만 벨트식 무단변속기는 높은 토르크 전달능력을 요구한다.Belt-type continuously variable transmissions have recently begun to increase due to improved fuel economy compared to vehicles equipped with automatic transmissions. This type of CVT is required to have a large torque transmission capacity, so it was conventionally applied only to a compact car of 1600cc or less.In recent years, the belt type CVT has been able to be mounted on a 2000cc class vehicle, but the belt type CVT requires high torque transmission capability. do.

그런데, 벨트식 CVT의 경우 토르크 전달능력은 스틸벨트(Steel Belt)와 풀리 사이의 마찰력에 의해서 전달된다. 따라서, 전달 토르크 용량은 벨트 얼라이먼트와 금속풀리의 금속간 마찰계수와 풀리가 조이는 압력에 의해서 결정된다. 그런데, 이러한 금속간 마찰계수는 윤활유 성능에 의해서 결정되고, 금속간 마찰계수가 부족하면 벨트와 풀리가 미끄럼이 생기거나, 벨트가 끊어지는 현상이 발생할 우려가 있다. 이러한 벨트식 CVT에는 종래 자동변속기유(이하 ATF라 함)를 사용하여 왔으며, 이 ATF는 1600cc이하 차량에서는 토르크 전달능력이 그다지 크지 않아도 되었기 때문에 ATF 중에서 비교적 마찰계수가 큰 것을 선정하여 적용하면 되었었다. 그러나, 2000cc급 차량에서는 더욱 높은 금속간 마찰계수가 요구되고, 높은 마찰계수에 따른 높은 내마모성이 요구되었기 때문에 무단변속기유의 이에 대한 개선의 필요성이 절실히 요구되던 실정이었다.However, in the case of the belt type CVT, the torque transmission capacity is transmitted by the friction force between the steel belt and the pulley. Therefore, the transmission torque capacity is determined by the coefficient of friction between the belt alignment and the metal pulley and the pressure of the pulley tightening. However, such a friction coefficient between metals is determined by lubricating oil performance, and if the friction coefficient between metals is insufficient, the belt and pulley may be slipped or the belt may break. In the belt type CVT, a conventional automatic transmission oil (hereinafter referred to as an ATF) has been used. Since the torque transmission capacity was not so great in vehicles of 1600 cc or less, the ATF had to be selected and applied with a relatively large coefficient of friction. However, in the 2000cc class vehicles, higher frictional coefficients between metals and higher abrasion resistance were required. Therefore, there is an urgent need for improvement of the continuously variable transmission oil.

이에, 본 발명의 별명자는 상기와 같은 문제점을 해결하기 위하여 예의 노력한 결과, 종래 ATF에 ZDDP(Zincdialkyldithiophosphate) 또는 Ca 페놀산염을 추가적으로 포함시킴으로써 마찰계수 및 내마모성이 월등히 개선할 수 있음을 확인함으로써, 본 발명을 완성하였다.Thus, the nickname of the present invention by diligent efforts to solve the above problems, by confirming that the friction coefficient and abrasion resistance can be significantly improved by additionally including ZDDP (Zincdialkyldithiophosphate) or Ca phenolate in the conventional ATF, Was completed.

결국, 본 발명의 주된 목적은 Zn 함량기준으로 500 내지 700 ppm인 하기 화학식(1)의 ZDDP(Zincdialkyl dithiophosphate) 또는 Ca 함량기준으로 1000 내지 1300 ppm인 하기 화학식(2)의 Ca 페놀산염을 추가적으로 포함하는 무단변속기유 조성물을 제공하는 데 있다.After all, the main object of the present invention further comprises ZDDP (Zincdialkyl dithiophosphate) of formula (1) of 500 to 700 ppm based on Zn content or Ca phenolate of formula (2) of 1000 to 1300 ppm based on Ca content It is to provide a continuously variable transmission oil composition.

도 1은 벨트식 무단변속기를 나타낸 사시도 및 단면도이다.1 is a perspective view and a cross-sectional view showing a belt continuously variable transmission.

도 2는 마찰계수에 대한 ZDDP & Ca 페놀산염의 영향을 나타낸 그래프이다.2 is a graph showing the effect of ZDDP & Ca phenolate on the friction coefficient.

이하, 본 발명의 무단변속기유 조성물에 대하여 보다 구체적으로 살펴보면 다음과 같다.Hereinafter, the continuously variable transmission oil composition of the present invention will be described in more detail.

우선, 본 발명은 무단변속기유 조성물에 관한 것으로, 종래 ATF에 화학식(1)의 ZDDP(Zincdialkyl dithiophosphate) 또는 화학식(2)의 Ca 페놀산염을 1종 이상 추가적으로 포함하는 것을 그 특징으로 한다:First of all, the present invention relates to a continuously variable transmission oil composition, characterized in that the conventional ATF further comprises at least one kind of ZDDP (Zincdialkyl dithiophosphate) of Formula (1) or Ca phenolate of Formula (2):

상기 화학식(1)에서, R1, R2, R3 및 R4는 탄소수 1 내지 20 개의 알킬기를 나타내며, Y는 S, S-S, S-S-S, S-S-S-S, S-(CH2)m-S(m은 정수), 또는 S-CH2-CH(CH3)-S를 나타낸다.In the formula (1), R1, R2, R3 and R4 represent an alkyl group having 1 to 20 carbon atoms, Y is S, SS, SSS, SSSS, S- (CH 2 ) mS (m is an integer), or S- CH 2 -CH (CH 3 ) -S.

상기 화학식(2)에서, R1 및 R2는 탄소수 1 내지 14개의 알킬기를 나타낸다.In the formula (2), R1 and R2 represent an alkyl group having 1 to 14 carbon atoms.

본 발명은 종래의 무단변속기어유인 ATF에 추가적으로 ZDDP 또는 Ca 페놀산염을 첨가하는 것으로, 여기서 ATF는 특정 ATF에 한정되는 것은 아니고, 40℃ 동점도가 20 내지 50cSt, 점도지수가 150이상, TAN(Total Acid Number: mgKOH/g)이 5 이하로서 인계마모방지제, 황계극압제, 마찰조정제, 분산제가 포함된 오일이면 적당하다. 이때, 인계마모방지제로는 인산에스테르, 인산에스테르아민염 등을 사용하는 것이 바람직하고, 또한 황계극압제로는 황화올레핀, 폴리설파이드등을 사용하는 것이 바람직하다. 그리고, 마찰조정제로는 알킬디설파이드, 클로리네이트등과 분산제로는 메탈술포네이트계를 선택사용한다. 이렇게 제조된 ATF에 상기 화학식(1)의 ZDDP(Zincdialkyl dithiophosphate)를 Zn 함량기준으로 500 내지 700 ppm을 첨가하거나, 또는 상기 화학식(2)의 Ca 페놀산염을 Ca 함량기준으로 1000 내지 1300 ppm을 첨가하여 무단변속기유를 제조한다. 이때, 추가적으로 포함되는 ZDDP 또는 Ca 페놀산염의 함량은 상기범위보다 증가하게 되면 벨트 구성요소에 적층(Deposit) 형성에 의한 벨트장력을 증가시켜 벨트의 끊어짐 또는 변속비가 일정치 않게되는 문제점이 있어 바람직하지 않게 된다.The present invention adds ZDDP or Ca phenolate to ATF, which is a conventional continuously variable gear oil, wherein ATF is not limited to a specific ATF, 40 ° C kinematic viscosity of 20 to 50 cSt, viscosity index of 150 or more, TAN (Total Acid number: mgKOH / g) is 5 or less, and it is suitable if it is an oil containing anti-phosphorus antiwear agent, sulfur extreme pressure agent, friction modifier, and dispersant. At this time, it is preferable to use a phosphate ester, a phosphate ester amine salt, etc. as a phosphorus antiwear agent, and it is preferable to use an olefin sulfide, polysulfide, etc. as a sulfur-type extruding agent. As the friction modifier, an alkyl disulfide, a chlorate and the like and a metal sulfonate type are used as the dispersant. To the ATF thus prepared, 500 to 700 ppm of ZDDP (Zincdialkyl dithiophosphate) of Formula (1) is added based on Zn content, or 1000 to 1300 ppm of Ca phenolate of Formula (2) is added based on Ca content. To manufacture continuously variable transmission oil. At this time, if the content of ZDDP or Ca phenolate additionally included is more than the above range it is preferable to increase the belt tension due to the deposition (Deposit) formed on the belt component, the belt breakage or transmission ratio is not constant because it is not preferable Will not.

이하, 본 발명을 실시예에 의하여 더욱 상세히 설명하고자 한다. 그러나, 이들 실시예는 오로지 본 발명을 보다 구체적으로 설명하기 위한 것으로, 이들 실시예에 의하여 본 발명의 범위가 한정되지 않는다는 것은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어서 자명할 것이다.Hereinafter, the present invention will be described in more detail with reference to Examples. However, these examples are only for illustrating the present invention in more detail, it will be apparent to those of ordinary skill in the art that the scope of the present invention is not limited by these examples. .

실시예 1 내지 4 및 비교예 1 내지 2:Examples 1-4 and Comparative Examples 1-2:

다음 표 1에 나타낸 조성 및 함량을 이용하여 통상의 방법대로 무단변속기어유를 제조하였다. 그리고, 이 기어유를 가지고 마찰계수, 마모경 등을 측정하여 다음 표 1에 함께 요약하여 나타내었고, 특히 마찰계수는 도 2에 별도의 그래프로 나타내어 개선된 정도를 표시하였다.Using a composition and content shown in Table 1 below to produce a continuously variable gear oil in a conventional manner. And, by measuring the friction coefficient, wear diameter, etc. with this gear oil and summarized together in the following Table 1, in particular, the friction coefficient is shown in a separate graph in Figure 2 to indicate the degree of improvement.

이상에서 상세히 설명한 바와 같이, 본 발명은 무단변속기유 조성물에 관한 것이다. 따라서, 이러한 본 발명에 따른 무단변속기유는 마찰계수 및 내마모성이 월등히 개선되어 무단변속기어(CVT)의 토르크 전달능력을 향상시킬 수 있을 뿐만 아니라, 벨트의 마모손상을 줄여 내구성을 대폭 향상시킬 수 있는 효과가 있다.As described in detail above, the present invention relates to a continuously variable transmission oil composition. Therefore, the continuously variable transmission oil according to the present invention can greatly improve the coefficient of friction and wear resistance, thereby improving the torque transmission capacity of the continuously variable transmission gear (CVT), and can greatly improve the durability by reducing the wear damage of the belt. It works.

Claims (1)

Zn 함량기준으로 500 내지 700 ppm인 화학식(1)의 ZDDP(Zincdialkyl dithiophosphate) 및 Ca 함량기준으로 1000 내지 1300 ppm인 화학식(2)의 Ca 페놀산염 중 1종 이상을 포함하는 무단변속기유 조성물:A continuously variable transmission oil composition comprising at least one of zincdialkyl dithiophosphate (ZDDP) of formula (1) having a Zn content of 500 to 700 ppm and Ca phenolate of formula (2) having a content of 1000 to 1300 ppm of a Ca content of: 화학식(1)Formula (1) 상기 화학식(1)에서, R1, R2, R3 및 R4는 탄소수 1 내지 20 개의 알킬기를 나타내며, Y는 S, S-S, S-S-S, S-S-S-S, S-(CH2)m-S(m은 정수), 또는 S-CH2-CH(CH3)-S를 나타낸다.In the formula (1), R1, R2, R3 and R4 represent an alkyl group having 1 to 20 carbon atoms, Y is S, SS, SSS, SSSS, S- (CH 2 ) mS (m is an integer), or S- CH 2 -CH (CH 3 ) -S. 화학식(2)Formula (2) 상기 화학식(2)에서, R1 및 R2는 탄소수 1 내지 14개의 알킬기를 나타낸다.In the formula (2), R1 and R2 represent an alkyl group having 1 to 14 carbon atoms.
KR10-2001-0040617A 2001-07-07 2001-07-07 Continuously Variable Transmission Fluid (CVTF) Formulation KR100435362B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101044543B1 (en) * 2009-06-18 2011-06-27 김두진 fishing rod support with light guide
KR20180002728U (en) 2017-03-10 2018-09-19 주식회사 두울온돌침대 Mattress with electric heat

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3145444B2 (en) * 1991-10-16 2001-03-12 東燃ゼネラル石油株式会社 Lubricating oil composition for automatic transmission
US5750477A (en) * 1995-07-10 1998-05-12 The Lubrizol Corporation Lubricant compositions to reduce noise in a push belt continuous variable transmission
KR19980055623A (en) * 1996-12-28 1998-09-25 박병재 Gear oil composition
JPH11116982A (en) * 1997-10-09 1999-04-27 Mitsubishi Oil Co Ltd Lubricating oil composition
JP3746365B2 (en) * 1997-11-21 2006-02-15 東燃ゼネラル石油株式会社 Lubricating oil composition
JP4226106B2 (en) * 1998-06-15 2009-02-18 株式会社ジャパンエナジー Metal belt type continuously variable transmission oil composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101044543B1 (en) * 2009-06-18 2011-06-27 김두진 fishing rod support with light guide
KR20180002728U (en) 2017-03-10 2018-09-19 주식회사 두울온돌침대 Mattress with electric heat

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