JPH11349976A - 自動変速機油組成物 - Google Patents

自動変速機油組成物

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Publication number
JPH11349976A
JPH11349976A JP9342122A JP34212297A JPH11349976A JP H11349976 A JPH11349976 A JP H11349976A JP 9342122 A JP9342122 A JP 9342122A JP 34212297 A JP34212297 A JP 34212297A JP H11349976 A JPH11349976 A JP H11349976A
Authority
JP
Japan
Prior art keywords
compound
automatic transmission
formula
transmission oil
agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9342122A
Other languages
English (en)
Inventor
Gee Sik Na
ギ シク ナ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hyundai Motor Co
Original Assignee
Hyundai Motor Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hyundai Motor Co filed Critical Hyundai Motor Co
Publication of JPH11349976A publication Critical patent/JPH11349976A/ja
Pending legal-status Critical Current

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    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
    • 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
    • C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
    • 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
    • C10N2040/046—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for traction drives

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  • Inorganic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

(57)【要約】 （修正有） 【課題】 一般的な基油に清浄分散剤としてサリチル酸
カルシウム化合物を添加して湿式摩擦クラッチの摩擦係
数の増大効果が劣らず、同時に低温流動性、熱酸化安定
性及び摩擦調整能力を有する自動変速機油組成物を提供
する。 【解決手段】 通常の潤滑基油に清浄分散剤として一般
式１又は２の化合物の１種以上と一般式３の化合物とを
混合して０．０１〜５．０重量％を含有する。 ＭＣＯ３Ｍ（ＯＨ）２ （３） ＲはＣ８〜１００の飽和或いは不飽和アルキル基であ
り、Ｍはカルシウム、マグネシウム或いはバリウムであ
る。

Description

【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、自動変速機油組成
物に関するもので、より具体的には通常の潤滑基油に清
浄分散剤として次ぎの化１及び化２に示される化合物の
中から選択された１種以上の化合物と化３で示される化
合物を添加して低温流動性、熱酸化安定性及び摩擦調節
能力を向上させることができる自動変速機油組成物に関
するものである。
【０００２】
【化１】
【０００３】
【化２】
【０００４】
【化３】
【０００５】前記式で、Ｒは、炭素数が８〜１００の飽
和或いは不飽和アルキル基であり、Ｍは、カルシウム、
マグネシウム或いはバリウム原子である。
【０００６】
【従来の技術】近来は自動車が生活必需品になり、女性
運転者及び老人運転者が急速度にふえている。この傾向
に応じて運転と調整が容易な自動車の便宜装置が多く開
発されている。自動変速機もやはり熟練度の必要である
クラッチ操作がないので、高価にもかかわらず自動車の
基本仕様になっている。
【０００７】自動変速機は、エンジンの動力をクラッチ
板の接触で断続した後に動力伝逹のギア比を選択する手
動変速機とは異なり、エンジンの回転により回転するト
ルクコンバータ内のオイルの動力学的圧力で回転する入
力軸、油圧に作動される湿式多板クラッチ及び油性ギア
の選択により回転速度を調整する。これにより、自動変
速機に使用される変速機油は、単純に潤滑油の役割だけ
が要求される従来の手動変速機油とは異なって耐酸化安
定性、耐磨耗性及び湿式クラッチの摩擦特性等が総合的
に考慮しれなければならない。
【０００８】通常的に、自動変速機油は、潤滑油の機油
に酸化防止剤、清浄分散剤、磨耗防止剤、摩擦係数調整
剤、疎泡剤、粘度指数向上剤及び着色剤等を所定比率で
混合して製造される。特に、摩擦係数調整剤としては、
カルシウムスルフォネート、バリウムスルフォネート及
びマグネシウムスルフォネートのようなスルフォン酸化
合物或いはカルシウムフェネート、バリウムフェネート
或いはマグネシウムフェネート化合物が使用されてい
る。これらの化合物は、湿式摩擦クラッチの摩擦係数を
増大させる效果は大きいが、その反面では自動変速機油
の粘度を高粘度に増大させて低温特性が低下される問題
点があった。
【０００９】
【発明が解決しようとする課題】本発明は、前記のよう
な従来の自動変速機油にかかわる問題点を解決するため
に、一般的な基油に清浄分散剤としてサリチル酸カルシ
ウム化合物を添加して湿式摩擦クラッチの摩擦係数の増
大效果が劣らず、同時に低温流動性、熱酸化安定性及び
摩擦調整能力を有する自動変速機油組成物を提供するこ
とにその目的である。
【００１０】
【発明の実施の形態】本発明は、一般的な潤滑油基油に
酸化防止剤、清浄分散剤、磨耗防止剤、防錆剤、摩擦係
数調整剤、疎泡剤、粘度指数向上剤及び着色剤等を含有
する自動変速機油において、前記清浄分散剤として次ぎ
の化１及び化２の化合物の中から選択された１種以上の
化合物と化３で示される化合物を混合して０．０１〜
５．０重量％を含有することをその特徴とする。
【００１１】
【化１】
【００１２】
【化２】
【００１３】
【化３】
【００１４】前記式で、Ｒは、炭素数が８〜１００の飽
和或いは不飽和アルキル基であり、Ｍは、カルシウム、
マグネシウム或いはバリウム原子である。このような本
発明をより具体的に説明すれば次ぎのようである。本発
明は、清浄分散剤として前記化１と化２の中から選択さ
れた１種以上の化合物と前記化３で示される化合物を混
合、添加してすぐれる低温流動性、熱酸化安定性及び摩
擦調整能力を有する自動変速機油組成物に関するもので
ある。
【００１５】本発明による自動変速機油において、前記
化１の化合物及び化２の化合物の中から選択された化合
物と化３の化合物を混合した清浄分散剤の含量が増加す
れば増加するほど、自動変速機油の粘度が向上されて高
温特性がすぐれることになり、その反対に成分率比が少
くなると、自動変速機油の粘度は下降して低温特性がす
ぐれることになる。
【００１６】このように本発明では、前記化１の化合物
及び化２の化合物の中から選択された化合物と化３の化
合物を混合して全体の基油組成物の中、０．０１〜５．
０重量％を含有するが、望ましくは０．１〜２．０重量
％である。もし、その含量が０．０１重量％未満であれ
ば摩擦調整機能が不充分であり、一方５．０重量％を超
過する場合には、通常の自動変速機油の中に含まれる摩
擦調整剤が分解されて湿式摩擦クラッチの摩擦材の隙間
に蓄積して摩擦係数を変化させるものが生じて望ましく
ない。
【００１７】前記化１で示される化合物の具体的な例と
しては、２−メチオルアルキルベンゾ酸カルシウム、２
−メチオルアルキルベンゾ酸マグネシウム、２−メチオ
ルアルキルベンゾ酸バリウム等があげられ、化２の具体
的な例としては、アルキルサリチル酸カルシウム無水
物、アルキルサリチル酸マグネシウム無水物、アルキル
サリチル酸バリウム無水物等があげられる。また、化３
の具体的な化合物としては、無水炭酸カルシウム塩、無
水炭酸マグネシウム塩、無水炭酸バリウム塩があげられ
る。一方、本発明による自動変速機油は、基油に通常の
酸化防止剤、清浄分散剤、磨耗防止剤、防錆剤、摩擦係
数調整剤、疎泡剤、粘度指数向上剤及び着色剤等を添加
して構成される。また、基油としては一般的に使用され
る基油全般にわたって使用することができるが、望しい
ものは鉱油である。
【００１８】このように、前記のような化合物を清浄分
散剤として添加して製造された自動変速機油は、湿式摩
擦クラッチの摩擦係数が従来のマグネシウムスルフォネ
ートやマグネシウムフォネートを清浄分散剤として添加
した自動変速機油で測定される値に比べて類似或いはす
ぐれる特性を示す。
【００１９】また、従来の自動変速機油はモータの回転
数を１３００±１５ｒｐｍ、１６５．５℃である浴槽で
２４時間の後に全酸価が０．３〜０．４に増加され、約
７２時間の後には２．４〜３．０まで増加されることに
比べ、本発明の組成による自動変速機油は２４時間の後
に０．１５になり、７２時間の後には約１．０１に増加
される特性を示すことを見れば酸化安定性の向上される
ことがわかる。
【００２０】以下、本発明を実施例にもとづいて詳細に
説明すれば次ぎのようであるが、本発明は実施例により
限定されることはない。 実施例１〜４及び比較例１〜４ 次ぎの表１に示したような含量及び組成により自動変速
機油を製造した。
【００２１】
【表１】
【００２２】実験例 前記実施例１〜４及び比較例１〜４により製造された自
動変速機油に対して摩擦特性、低温粘度及び酸化安定性
を測定し、その結果を次ぎの表４に示す。ここで、摩擦
特性はSHINKO社の単板摩擦特性試験器で測定し、酸化安
定性は、内燃機関用潤滑油の酸化安定度試験器(KS M 21
21) により評価した。各種の試験條件を次ぎの表２と３
に示す。 ［評価方法］ １．摩擦特性 関連規格：JASOM349-95[自動変速機油に対いするShudde
r 防止性能の試験方法]
【００２３】
【表２】
【００２４】２．低温粘度 ASTM D2983 [Apparent Viscosity of General at Low T
emperature Using theBrookfield Viscometer] により
測定。 ３．酸化安定性 KS M 2121 ［潤滑油の酸化安定度試験方法］により測
定。
【００２５】
【表３】
【００２６】
【表４】
【００２７】
【発明の効果】前記結果から明らかなように、本発明に
よる自動変速機油は、従来のマグネシウムスルフォネー
ト或いはマグネシウムフェネートを清浄分散剤として使
用した自動変速機油に比べて類似或いはすぐれる摩擦特
性を有しながらも酸化安定性が高いし、もっと自動変速
機油の粘度を調整することができるので、低温特性を改
善することが容易な長点がある。
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ１０Ｎ 30:04 30:06 30:10 30:12 30:18 30:20 40:04

Claims (4)

    【特許請求の範囲】
  1. 【請求項１】 潤滑油基油に酸化防止剤、清浄分散剤、
    磨耗防止剤、防錆剤、摩擦係数調整剤、消泡剤、粘度指
    数向上剤及び着色剤等を含有する自動変速機油におい
    て、前記清浄分散剤として次ぎの化１及び化２の化合物
    の中から選択された１種以上の化合物と化３で示される
    化合物を混合して０．０１〜５．０重量％を含有するこ
    とを特徴とする自動変速機油組成物。 【化１】 【化２】 【化３】 前記式で、 Ｒは、炭素数が８〜１００の飽和或いは不飽和アルキル
    基であり、 Ｍは、カルシウム、マグネシウム或いはバリウム原子で
    ある。
  2. 【請求項２】 前記化１の化合物は、２−メチオルアル
    キルベンゾエ−トカルシウム、２−メチオルアルキルベ
    ンゾエートマグネシウム及び２−メチオルアルキルベン
    ゾエートバリウムの中から選択された１種以上の化合物
    であることを特徴とする請求項１記載の自動変速機油組
    成物。
  3. 【請求項３】 前記化２の化合物は、アルキルサリチル
    酸カルシウム無水物、アルキルサリチル酸マグネシウム
    無水物及びアルキルサリチル酸バリウム無水物の中から
    選択された１種以上の化合物であることを特徴とする請
    求項１記載の自動変速機油組成物。
  4. 【請求項４】 前記化３の化合物は、無水炭酸カルシウ
    ム塩、無水炭酸マグネシウム塩及び無水炭酸バリウム塩
    の中から選択された1 種以上の化合物であることを特徴
    とする請求項１記載の自動変速機油組成物。
JP9342122A 1996-11-29 1997-11-27 自動変速機油組成物 Pending JPH11349976A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1996P59965 1996-11-29
KR1019960059965A KR0173882B1 (ko) 1996-11-29 1996-11-29 자동변속기유 조성물

Publications (1)

Publication Number Publication Date
JPH11349976A true JPH11349976A (ja) 1999-12-21

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ID=19484759

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Application Number Title Priority Date Filing Date
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Country Link
US (1) US5854181A (ja)
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DE (1) DE19752886A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007517131A (ja) * 2003-12-31 2007-06-28 アクシオム・オートモーティブ・テクノロジーズ・インコーポレーテッド 高度に応力の加わった伝動システムに使用される熱的に安定な摩擦、磨耗および分解を軽減する組成物

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020087196A (ko) * 2001-05-14 2002-11-22 현대자동차주식회사 윤활유 조성물
US20150051129A1 (en) * 2013-08-15 2015-02-19 Infineum International Limited Transmission Fluid Compositions for Improved Energy Efficiency
US10227544B2 (en) * 2013-08-15 2019-03-12 Infineum International Limited Automotive transmission fluid compositions for improved energy efficiency

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152989A (en) * 1961-01-06 1964-10-13 Exxon Research Engineering Co Liquid lubricants comprising mixed calcium carbonate-acetate sols
US3457286A (en) * 1967-12-01 1969-07-22 Geigy Chem Corp Organic esters containing an alkylhydroxyphenyl group
NZ186808A (en) * 1977-04-06 1979-10-25 Rocol Ltd Lubricant composition containing group ii-a metal carbonate and halogenated organic lubricant
DE3673113D1 (de) * 1985-10-11 1990-09-06 Ciba Geigy Ag Substituierte p-hydroxyphenylverbindungen.
US5456848A (en) * 1993-01-19 1995-10-10 The United States Of America As Represented By The Secretary Of The Air Force High temperature lubricants containing cesium, robidium, and lithium salts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007517131A (ja) * 2003-12-31 2007-06-28 アクシオム・オートモーティブ・テクノロジーズ・インコーポレーテッド 高度に応力の加わった伝動システムに使用される熱的に安定な摩擦、磨耗および分解を軽減する組成物

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DE19752886A1 (de) 1998-06-04
KR19980040739A (ko) 1998-08-17
KR0173882B1 (ko) 1999-03-20

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