At first, authors established an experimental system to acquire crankcasepressure signal and vibration acceleration signal.
通过搭建试验台架，从实车试验中获取曲轴箱压力信号和机身振动加速度信号；
2
Return oil is equally divided, and uniform crankcasepressure and oil level are purposely kept in equilibration parallel system.
油气平衡式并联技术平均分配回油，并强调气压和油位的平衡。
3
The dynamic technology ranks the compressors according to the crankcasepressure levels, and return oil is not distributed equally but according to the order based on the ranks.