(duplicate) 2020 Hyundai Sonata Hybrid Details Slowly Released --- Upgraded Advanced Tranny Features

Discussion in 'Hyundai' started by xcel, Jul 19, 2019.

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  1. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    [​IMG] Despite slow sales, thankfully the Sonata Hybrid was not canceled and should be even better than ever before!

    Wayne Gerdes – CleanMPG – July 21, 2019


    Hyundai released details on their all-new Sonata hybrid transmission that not only indicated that the 2020 Sonata Hybrid will not only be made available, it will incorporate the worlds first Active Shift Control (ASC) transmission. The upgrade appears to be mostly computer hardware and software in nature while still not incorporating a torque converter as gear shifts are monitored up to 500 times per second to adjust transmission rotation speed 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.

    Independently Developed Control Logic Software Applied to the Electric Motor

    Conventional hybrid vehicles do not have torque converters in order to further improve fuel. Although fuel efficient, such a system also requires longer shift times to ensure smoother gear changes.

    ASC technology allows the hybrid’s electric motor to also take control of gear shifts by applying new software logic to the Hybrid Control Unit (HCU) to mitigate issues with slower shift time. The HCU monitors the rotational speed of transmission with a sensor installed inside the electric motor at 500 times per second to quickly synchronize the rotational speed with that of engine.

    With the synchronization, shift time is reduced by 30% from 500ms to 350ms. This not only improves hybrid vehicle’s acceleration performance and fuel economy, but also durability of the transmission by minimizing friction during gear shift.
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