By optimizing parameters related to damping performance and adopting a layout that incorporates the turbine into the damper components, a “Turbine Twin-Damper” lock-up damper was developed that achieves both damping performance and compactness. To reduce losses in the fluid flow channel, a smaller torus was developed that reduce the width of the torus by about 30%.Through the combination of this Turbine Twin-Damper and smaller torus, attenuation of the torque fluctuation transmitted to the transmission to 1/2 or less compared to a conventional product was achieved without increasing the overall width of the torque converter. As a result, the engine speed at cruise fell by 400rpm, and fuel economy improved.
Development of a Compact Ultra-Flat Torque Converter Equipped with a High-Performance Damper
Sae Int. J. Engines
SAE 2015 World Congress & Exhibition ; 2015
Sae International Journal of Engines ; 8 , 3 ; 1374-1378
2015-04-14
5 pages
Conference paper
English
Development of a compact ultra-flat torque converter equipped with a high-performance damper
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