Abstract
The thesis built the simulation model of automobile variable transmission driving efficiency, and calculated the transmission efficiency by using the MASTA software under different conditions. The simulation results showed that the reverse transmission efficiency is the lowest. With gears forward 1 ~ 4, its transmission efficiency increased gradually, while the fifth gear is overdrive, therefore its transmission efficiency is lower than the fourth direct file. The transmission efficiency of the same gear increases and then decreases with the increase of the torque input. While the range of the transmission efficiency between different speed increases along with the increase of the torque. With the increase of the rotational speed of the gearbox, the transmission efficiency increase gradually, but the increase amplitude reduces gradually. The great method provides some reference for the study of the transmission efficiency.
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