A Dynamic Filtration Model for the Power-shift Steering Transmission

Paper #:
  • 2016-01-1139

Published:
  • 2016-04-05
DOI:
  • 10.4271/2016-01-1139
Citation:
Liu, Y., Ma, B., Xu, B., and Miao, Z., "A Dynamic Filtration Model for the Power-shift Steering Transmission," SAE Technical Paper 2016-01-1139, 2016, doi:10.4271/2016-01-1139.
Pages:
6
Abstract:
Within the hydraulic shifting circuit of power-shift steering transmission, the performance of filter is generally characterized by the theoretical filtration ratio. However in practical work, the actual filtration ratio is far less than the theoretical ratio. On the basis of investigation on the structural characteristics, the oil flowing distribution and the filter mechanisms, the re-filtering rate ω and recontaminative rate θ are defined to simulate the actual filtering process. Therefore, the dynamic filtration ratio is modelled and simulated in MATLAB/Simulink to investigate that how the filtering rate ω and θ influence the dynamic filtration ratio and the deviation between the dynamic ratio and theoretical ratio. Afterwards, the variation of dynamic filtration ratio is tested through a filtration experiment under the circumstances of various flow rate, temperature and pressure. The results show that, the dynamic filtration ratio is more approximate to the actual ratio and more suitable for being applied to the modelling of contaminant control.
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