Technical Paper
Modeling and time discrete characteristics analysis of the oil filling process of wet clutch for a specialized vehicle’s automatic transmission
2024-04-09
2024-01-2284
The automatic transmission of a specialized vehicle experienced the issue of unstable oil charge time due to the significant variability of related parameters and the non-linear trend of individual product parameter changes over time. To investigate the underlying causes of this phenomenon and the improved oil charge effect, a detailed model of the clutch oil charge process during gear shifting was established in this paper, which included dynamic models of components such as the hydraulic system, clutch, proportional valve, and pumps. The influence of parameters such as orifice diameter, piston gap, and oil filling flow rate on the system response was taken into account. Dynamic simulations were conducted to study the impact of these parameters on the clutch oil charge time. Additionally, physical experiments were performed using a test bench to provide a comparison with the simulation results.