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Low Viscosity Automatic Transmission Fluids with Enhanced Friction Durability

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润滑油 2009年第1期24卷 29-36页

作者： Kenji Yatsunami Samuel H. Tersigni TANG Hong -zhi Lee D. Saathoff Christopher S. Cleveland Mark Jones afton chemical Japan corporation Tsukuba Japan Alton chemical corporation Richmond Virginia USA afton chemical Ltd. Bracknell Berkshire United Kingdom

This study focused on the development of a new low viscosity automatic transmission fluid(ATF) with enhanced friction durability to meet the needs of new step type automatic *** high fuel prices encourage increased efficiency in the driveline,including the *** in fluid viscosity and wider use of slip control in torque converter clutches are two ways to practically improve fuel *** torque and more shifting is seen with a variety of new transmission hardware platforms,such as wet starting clutches,dual clutches and seven-or eight-speed *** suggests the need for enhanced levels of friction durability from the *** new challenge from this hardware for the ATF formulator lies in the need to simultaneously meet the wear,friction durability and torque capacity requirements at low viscosity in a cost-effective *** report introduced a new low viscosity fluid that represents a different commercial ATF formulation *** new chemistry employs a low viscosity for increased fuel economy,while easily doubling the friction durability of current conventional ATFs and offering higher torque and better EP.

关键词：机动车自动变速器润滑油产品介绍燃料摩擦耐久性

Developing Additive Technology for Wet Dual Clutch Transmissions

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润滑油 2012年第2期27卷 22-29页

作者： Hong-Zhi Tang Ramnath Iyer Samuel H.Tersigni Philippe Ezanno Christopher S.Cleveland afton chemical corporation

Wet dual clutch transmissions(W-DCTs) show overall benefits including excellent fuel efficiency,wide torque capacity range,long durability,driving comfort and *** breakthroughs have been made to further improve the fuel efficiency by design innovations and introductions of new *** W-DCT has its unique design and *** demands the lubricant to provide excellent wet clutch friction performance and anti-shudder friction durability,good synchronizer friction performance and durability,high load-carrying ability,excellent bearing performance,strong anti-corrosion performance,high thermal and oxidative stability,excellent material compatibility,***,the requirement of the wet clutch friction performance in W-DCT is much more severe than conventional ATFs and *** report here our latest W-DCTF technologies developed for different W-DCT ***-1 was optimized for a two-sump W-DCT application with the clutch lining material of friction material A(FM-A).DCTF-1 shows high and stable dynamic friction,static friction,particularly,high quasi-static friction without any shudder tendency in GK ***-2 was designed for a one-sump W-DCT application with the same clutch lining material of ***-2 completes 42,000 cycles of the severe GTI chassis dynamometer vehicle test without any issues,which is comparable to the factory fill fluid ***-3 was developed for a one-sump W-DCT application with a different clutch lining material of ***-3 shows high and stable dynamic friction in the severe newly developed SAE DCT test ***-3 also gives excellent LVFA durability of over 720 h in the JASO M349 test procedure on FM-B.

关键词： dual clutch transmission DCT fluid friction durability

New Measurement Method for Direct Cooled Power Electronic with Transmission Fluids

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Journal of Electronics Cooling and Thermal Control 2021年第1期10卷 1-13页

作者： Andreas Griesinger Christian Windel Yungwan Kwak Arthur Petuchow Zentrum für Wä rmemanagement Stuttgart Germany Mercedes-Benz AG Development Passanger Cars Stuttgart Germany afton chemical corporation Richmond USA afton chemical GmbH Hamburg Germany

Power Electronic (PE) will play an essential role in future drive concepts. Nowadays, mainly water/glycol-based cooling media are used to cool PE. Due to their high electrical conductivity (EC), water/glycol-based coolants cannot be used for direct cooling of the electrical components. Direct cooling concepts with dedicated transmission fluids show potential usage of fluid in direct contact with electrified parts. This results in special requirements for the fluids and materials. The aimed action as a coolant requires a defined measurement and characterization of fluid properties and heat transfer in order to assess the cooling ability of a fluid. The purpose of the work was to develop a new measurement setup based on the thermal transient method with which the thermal requirements of cooling fluids for a direct cooling concept can be assessed. With this method, relevant transmission fluids have been tested and the thermal performance compared to indirect cooling effect of water/glycol is discussed. The result of the work is that the measurement method is very well suited for the application-related evaluation of the fluids. Direct oil cooling with transmission fluids could increase heat transfer coefficient by a factor of 3 to 8, compared to the indirect cooing with water/glycol as cooling media.

关键词： Thermal Transient Method Heat Transfer Coefficient Direct Cooling Trans-mission Fluids

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节能型齿轮油配方技术的开发(英文)

节能型齿轮油配方技术的开发(英文)

面向未来的燃油和车辆技术的燃油添加剂(英文)

中国汽车工程学会燃料与润滑油分会第13届年会

作者： Tze-Chi Jao Dave DeGonia Chip Hewette afton chemical corporation richmond

摘要近年来,尤其是在新兴经济体和人口众多的国家和地区,车辆生产和燃料需求都出现了迅猛的增长。因此汽车生产厂商必须生产出能效更高、更经久耐用的轿车和卡车。为此,汽车制造厂希望油品生产商和添加剂技术研发部门能从润滑油方面帮...

摘要近年来,尤其是在新兴经济体和人口众多的国家和地区,车辆生产和燃料需求都出现了迅猛的增长。因此汽车生产厂商必须生产出能效更高、更经久耐用的轿车和卡车。为此,汽车制造厂希望油品生产商和添加剂技术研发部门能从润滑油方面帮助它们达到这一目标。众所周知,提高轮轴的传动效率能够明显改进车辆的能效。为了开发出能够大幅度提升轴传动效率的齿轮油,首先必须开发一种快速并具有高度可重复性的台架测试方法。有了可靠的台架测试工具之后,我们成功地开发了一种节能型的齿轮油配方技术,所得产品具有良好的耐磨性、极压性能和抗氧化稳定性。我们希望在本次年会上与大家分享自己的经验。

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来源： cnki会议评论

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汽车安全与节能学报 2010年第2期1卷 107-114页

作者： Joseph W.ROOS Larry J.CUNNINGHAM 许富强 afton chemical corporation Richmond Virginia 23219USA 雅富顿贸易(北京)有限公司

回顾了燃料添加剂在生产优质运输燃料和优化车辆性能中的作用,研究了燃料添加剂在先进混合动力汽车和直喷发动机上的应用。为了满足法规和经济效益上对保证能液供给,提高燃油经济性和降低车辆排放的要求,运输燃料和车辆技术正快速发展... 详细信息

回顾了燃料添加剂在生产优质运输燃料和优化车辆性能中的作用,研究了燃料添加剂在先进混合动力汽车和直喷发动机上的应用。为了满足法规和经济效益上对保证能液供给,提高燃油经济性和降低车辆排放的要求,运输燃料和车辆技术正快速发展。与之对应,要求燃料能够进行安全有效的运输和存储,并能满足车辆的正常使用。回顾了各种燃料添加剂,这些添加剂给燃料生产商提供了一种安全有效的燃料运输方式,且能够满足不断发展的发动机技术的要求,使新技术得到有效应用。

关键词：燃料添加剂燃料性能性能添加剂

Bench Test Modeling for Current and Future PCMO Fuel Economy Requirements

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润滑油 2008年第1期23卷 55-61页

作者： Mark T. Devlin Cheng C. Kuo John M. Pietras Zhang Yun Afion chemical corporation richmond Virginia USA Afion chemical Trading （ Beijing ） Co. Ltd. Beijing China

The automotive and lubricant industries have been placing increased emphasis on the fuel economy benefits of today′s modern passenger car motor *** current ILSAC GF-4 specification has more stringent requirements than previous ILSAC specifications,and the proposed future ILSAC GF-5 specification is looking at further improvements in the lubricant′s fuel economy *** address these needs,afton chemical has developed correlations between the rheological and frictional properties of oils and fuel economy measured in engine and field *** this paper we will present correlations between lubricants′ physical properties and fuel economy measured in vehicles and engine *** tools have been used to develop current commercial oils which are being used extensively to meet today′s OEM needs.

关键词：燃料经济性台架试验模型流变学摩擦力汽车机油