Methods for Calculating the Load of Electric Vehicle Gearboxes Using their Dynamic Models
A two-mass dynamic model of an electric vehicle is considered to obtain analytical dependences describing the gearshift process in a shaft-planetary gearbox. The calculations are based on the optimal diagram of shifting gears from low to high without interruption of the power flow from the electric...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
National Academy of Sciences of Belarus, State Scientific Institution “The Joint Institute of Mechanical Engineering"
2022-06-01
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| Series: | Механика машин, механизмов и материалов |
| Subjects: | |
| Online Access: | http://mmmm.by/en/readers-en/archive-room-en?layout=edit&id=1747 |
| Summary: | A two-mass dynamic model of an electric vehicle is considered to obtain analytical dependences describing the gearshift process in a shaft-planetary gearbox. The calculations are based on the optimal diagram of shifting gears from low to high without interruption of the power flow from the electric motor. At the stage of gear shifting, at which the kinematic gear ratio of the gearbox changes from u1 to u2, Lagrange equations of the second kind are used to determine the time dependences of angular velocities of the input and output shafts of gearbox. An example is given for calculating the gearshift time from low gear to high one for the MAZ-4381EE delivery electric truck, as well as a refined calculation for a multi-mass dynamic scheme is carried out. |
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| ISSN: | 1995-0470 2518-1475 |