Numerical simulation and experimental analysis of Variable displacement gear oil pump vibration and noise

Paper #:
  • 2017-01-0446

Published:
  • 2017-03-28
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Affiliated:
Abstract:
Aiming at the variable displacement oil pump, the modal and noise were studied, and structural optimization and test verification were carried out. The modal analysis of the variable displacement oil pump was carried out by ABAQUS. Three dimensional unsteady flow field in the variable pump was calculated by Pumplinx. Sound field was calculated by ACTRAN acoustic software. The NVH and comprehensive performance test of the oil pump was carried out by oil pump test bench and B&K PULSE vibration and noise test equipment. The modal of the variable displacement oil pump was analyzed by ABAQUS. Three dimensional unsteady flow field in the variable pump was calculated by Pumplinx. The sound field was calculated by ACTRAN acoustic software. The NVH and comprehensive performance test of the oil pump was carried out by oil pump test bench and B&K PULSE vibration and noise test equipment. The result shows that, the main vibration deformation zone is the inlet area closed to the gear meshing position. The large vibration mode can be eliminated by adding stiffener. Cavitation has great influence on the wide frequency band of gear pump vibration and noise. And when cavitation occurs, the wide band noise increases. The improvement in vibration and noise performance was obtained by the structural optimization. The vibration of starting condition is larger than that of normal condition, and the vibration acceleration is larger in high frequency range.
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