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http://dx.doi.org/10.9725/kstle.2005.21.3.142

A Study for Effects of Automatic Transmission Fluid on Fuel Economy  

Cha, Sang-Yeob (Research & Development Division for Hyundai Motor Company & Kia Motors Corporation)
Yang, Si-Won (Daeduk Institute of Technology, SK Corporation)
Publication Information
Tribology and Lubricants / v.21, no.3, 2005 , pp. 142-148 More about this Journal
Abstract
In order to improve the fuel economy by design change of automatic transmission, various technologies such as increased shift stages, slip control of lock-up clutch and compact and low-weight design have been developed. And also many OEMs have developed their own ATFs as a part of these automatic transmissions. In this study, to investigate the effects of ATF characteristics on fuel economy, we got the worldwide OEM ATFs and made some reference fluids. And physical properties, frictional characteristics and fuel economy using dynamometer test for these fluids were evaluated. From the investigation, it was found that viscosities of ATFs are correlated with fuel economy in dynamometer test and reducing the viscosities made it possible to obtain fuel economy.
Keywords
ATF; fuel economy; frictional characteristics; low viscosity; LVFA and SAE No.2.;
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