Research on Continuous Power Shift Process of Hydro-Mechanical Continuously Variable Transmission

Abstract

Abstract Which through the state switch of shifting mechanism and combined with speed regulation of hydraulic transmission system, the shift of Hydro-Mechanical continuously variable transmission (HMCVT) is realized. The traditional method of shift is short intervals or cross, which will easily lead to power interruption and affects the shift quality. In this study, the continuous power-shift is realized in the method of short overlap between segments. The continuous power shift process of HMCVT is studied in theory. The result of theoretical research is verified on the test bench, which provided suggestions for better shift quality and making control strategy.