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http://dx.doi.org/10.7839/ksfc.2018.15.3.036

Minimization of Shifting Shock of Tractor PST using SimulationX  

Eom, Tae Ho (Department of Construction Machinery Engineering, Inha University)
Lee, Chul-Hee (Department of Mechanical Engineering, Inha University)
Publication Information
Journal of Drive and Control / v.15, no.3, 2018 , pp. 36-42 More about this Journal
Abstract
Agricultural tractors require frequent shifting to improve operation efficiency, and PST (Powershift Transmission) is considered as a suitable transmission. However, due to the inherent characteristics of the PST, shocks arise during shifting, which imparts a negative effect on the operator. Therefore, in order to improve the transmission performance of the tractor PST, researches on various methods including the hydraulic system circuit, the engine input speed control, and the mechanical system of the transmission are steadily being conducted. In this study, in order to reduce the impact of PST on a shift based on SimulationX software, we analyzed the characteristics of the input signal of PCV (Pressure Control Valve) through sensitivity analysis and verified the simulation model through actual vehicle test. Optimization was performed for minimizing the shift shock for some of the parameters of the input signal at constant temperature and RPM conditions.
Keywords
Agricultural Tractors; Powershift Transmission; Shift Shock; Pressure Control Valve;
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Times Cited By KSCI : 3  (Citation Analysis)
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