HMG News Room

HMG Develops World First Active Shift Control for Hybrids to Enhance Fuel Economy

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SEOUL, July 19, 2019– Hyundai Motor Group has developed the world’s first Active Shift Control (ASC) transmission technology. The innovation optimizes transmission efficiency by monitoring gear shifts 500 times per second, precisely adjusting the transmission rotation speed to for faster shift times. The new technology will premiere in the upcoming Hyundai Sonata Hybrid and eventually benefit other upcoming Hyundai and Kia hybrids.
ASC applies new control logic software to the Hybrid Control Unit (HCU), which then controls the electric motor to align the rotational speeds of the engine and transmission to reduce gear shift time by 30%. The technology also delivers smoother gear changes despite quicker shift times.