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New CEC Gasoline Direct Injection Fuels Test – Comparison of Deposits and Spray Performance from New and Used injectors.

Afton Chemical, Ltd.-Jonathan James Pilbeam
  • Technical Paper
  • 2019-28-2392
To be published on 2019-11-21 by SAE International in United States
The use of deposit control additives in European market gasoline is well documented for maintaining high levels of engine cleanliness and subsequent sustained fuel and emissions performance. Co-ordinating European Council (CEC) industry fuels tests have played a crucial role in helping to drive market relevant, effective and low-cost deposit control additives into European market fuels. Until now, there has not been a Gasoline Direct Injection engine test available to fuel marketers in any market globally. However, a new CEC engine test is currently being developed to address that gap. Based on an in-house VW injector coking test, it shows promise for becoming a useful tool with which to develop and measure the performance of deposit control additives. A key requirement of industry tests should be to replicate issues seen in consumer vehicles, thereby providing a platform for relevant solutions. For this paper, injectors from the new VW injector coking test in a clean and coked state were compared to injectors from vehicles in the market in respect of deposit geometry, elemental composition and injector spray…
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Durability of Dual Clutch Transmission Fluids

Afton Chemical, Ltd.-Mark S. Jones
Afton Chemical Corporation-Samuel H. Tersigni, Hong-Zhi Tang, Ramnath N. Iyer, Christopher S. Cleveland
Published 2009-06-15 by SAE International in United States
This report focuses on an extended investigation of the durability of Dual Clutch Transmission (DCT) fluids. The performance requirements of DCT fluids differ from those of traditional step automatic transmission fluids. For that reason, key performance lab tests are discussed in this paper. Friction durability is measured with a modified version of the JASO M348 SAE#2 friction plate test. In addition, results from a vehicle chassis dynamometer test are discussed. This test involves running a 2008 Volkswagen GTI for 60,000 dynamometer miles (42,000 cycles) of severe acceleration and high speed conditions. Finally, a new DCT fluid, which performs well in these tests, offers friction stability and superior wear protection of transmission hardware, when compared to the commercial reference fluid.
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New Durability Testing of Dual Clutch Transmission Fluids

Afton Chemical, Ltd.-Mark S. Jones
Afton Chemical Corporation-Samuel H. Tersigni, Timothy J. Henly, Ramnath N. Iyer, Christopher S. Cleveland
Published 2008-10-06 by SAE International in United States
This paper reports its findings in three separate parts. First, a comparative study is made among existing commercial dual clutch automatic transmission fluids (DCTFs). Significant differences in fluid torque capacity, friction material compatibility and copper corrosion performance were found among the fluids. Second, both a new vehicle chassis dynamometer durability test and a SAE#2 durability procedure are offered, specifically designed for DCTs. A 2008 VW GTI did well in the severe 60,000 mile chassis dynamometer procedure. Third, a new DCT fluid is discussed.
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A Survey of American and Canadian Consumer Experience - The Performance of Late Model Year Vehicles Operating on Gasoline With and Without the Gasoline Fuel Additive MMT®

Afton Chemical, Ltd.-Martin J. Openshaw
Afton Chemical Corporation-Joseph W. Roos, Michael W. Meffert, Lawrence J. Cunningham, Alan R. Hotchkiss
Published 2006-10-16 by SAE International in United States
This paper presents the results of a three city survey designed to determine the relative frequency of illumination of vehicle on-board diagnostic (OBD) malfunction indicator lights (MIL) on 2001 and later model year vehicles. The survey was conducted in a Canadian market, Regina, and two U.S. markets, Minneapolis and Denver, to assess claims that the presence of methycyclopentadienyl manganese tricarbonyl (MMT®) in gasoline causes the failure of technology necessary to meet stringent Tier 2 emission standards applicable in North America. The results of the survey do not support the claim that MMT® is incompatible with the effective functioning of the advanced vehicle emission technology necessary to meet Tier 2 emission standards. The results substantiate that the performance of the most advanced vehicles operating on gasoline containing MMT® is not materially different from the performance of comparable vehicles operating on gasoline that does not contain MMT®.
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