Browse Publications Technical Papers 2019-01-0370
2019-04-02

Planetary Power Split Device for Hybrid Vehicle Powertrain 2019-01-0370

This work looks into the development of power-split planetary gear set for hybrid vehicle. The aim is to research possible solution of hybrid powertrain integrating DHT (Dedicated Hybrid Transmission), which will comply with demands of compact cars, where simplicity and low price is a primary focus. On the other hand, this solution must offer full-hybrid capability. The search of new solution is focused on the usage of one electric motor in combination with internal combustion engine, the planetary gear set (PGS) and stepped transmission. For low forward speeds and reverse the electric drive can be used. The low forward speed can be ensured also by combination of electric motor and ICE, the medium speed range will be covered by powersplit or combination/addition of power of ICE and electric motor, for highway usage the direct drive from ICE via stepped transmission is envisaged. Most of the functional modes allow also the electric energy recuperation. The paper will present the overview of existing solutions; the literature survey will be dedicated for designs with single electric motor mainly. Further will be included the description of newly proposed mechanism, the shift table and full description of all functional modes. For demonstration and simulation purpose was chosen 1.0 L spark ignition engine in combination with 48 V electric motor - the results will be included in the paper. It was decided to build a plastic demonstrator of the newly invented DHT for the functional check.

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