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Shift-transient characteristics of an automatic transmission
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 Title & Authors
Shift-transient characteristics of an automatic transmission
Chang, Hyo-Whan; Jun, Yoon-Sik;
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 Abstract
Shift quality of an automatic transmission in a vehicle is mainly affected by transient pressures in the hydraulic system during shifting. In this study, dynamic modelings of the hydraulic system and the power train of an automatic transmission are made systematically by a bond-graph method. The dynamic characteristics of the line pressures and clutch/brake pressures during shiftings are investigated by simulations and verified by experiments. The effects of clutch/brake pressures on the shift torque are also investigated through driving simulation.
 Keywords
Hydraulic System;Dynamic Model;Shift Quality;Bond Graph;Planetary Gear Units;Shift-Transient Pressure;
 Language
Korean
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