Research on starting overflow loss of hydraulic excavator slewing system

In order to decrease the overflow loss of the hydraulic excavator when it began to rotate,the mathematical model and AMESim model of the slewing system were built and verified by the experiments.And the simulation analysis of the excavator slewing system was conducted.The results show that the rotary starting overflow loss is large.According to the fact that the pump output flow tended to be larger than the desired flow of swing motor when the excavator began to rotate,an improved plan was proposed.The simulation results show that the optimized plan has better energy saving effect with the rotary starting overflow loss being reduced by 80%.