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New PAMA Technology Helps Tackle the New Challenges of China Automotive Sector

润滑油 2010年第1期25卷 31-38页

作者： Alex Tsay Evonik RohMax Asia Pacific Pte.Ltd

Polyalkylmethacrylate (PAMA) based viscosity index improver (VII) and pour point depressant (PPD), with the versatile chemistry and unique performance characteristics, are widely used in advanced formulations, enabling fluids to meet rheological requirement of modern specifications. This paper will be dedicated to the application of PAMA in helping China automotive lubricant formulators tackle the challenges of improving fuel economics from using lower viscosity fluids, of better protection strengthten in transmission performance and meeting new global specifications for low temperature performance.

关键词： polyalkylmethacrylate viscosity index improver pour point depressant automatic transmission fluid gear oil ROBO test

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Tailor-MadeⅥimprovers for Modern Fuel Efficient Transmissions

Tailor-MadeⅥImprovers for Modern Fuel Efficient Transmissio...

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中国汽车工程学会燃料与润滑油分会第十四届年会

作者： Jen-Lung Wang Evonik RohMax Oil Additives 723 Electronic DriveHorshamPennsylvania U.S.A.

With increasing sophistication in transmission technology to address the demand for fuel economy improvement and greenhouse gas reduction,it is well recognized that transmission fluid formulation is an integral part of transmission *** is one of the most critical properties in transmission *** fluid viscosity can effectively reduce friction over a wide temperature range,improve fuel economy,increase lifespan of the fluid,and maximize the mechanical benefit of transmission *** (PAMA) viscosity index improver is currently the predominant solution to optimize fluid viscometric performance characteristics,enabling fluid to meet stringent requirement of conventional manual and automatic transmissions. In addition,with its excellent viscosity/temperature response and flexible chemistry,polyalkyl-methacrylate is well suited for lubricants used in the latest transmission technologies,such as double clutch transmission and continuously variable *** paper will first summarize the trend in transmission technology and transmission fluid *** second part of the paper will showcase the performance benefit of PAMA based viscosity index improvers in the lubricants for various types of transmissions,such as meeting stringent OEM viscometric requirement,maintaining proper working viscosity and providing base oil flexibility to oil *** bench test(ARKL test) results will also be presented to illustrate the advantage of PAMA based transmission formulation in improving operation efficiency.

关键词： Polyalkylmethacrylate viscosity index improver Transmission Fluid Fuel Efficiency

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