Research Status and Challenges on Vibration Dynamic Mechanism and Control Technology for Fuel Gear Pumps

doi:10.3901/JME.260306

Abstract

Abstract: As the core components of fuel supply systems, fuel gear pumps have been widely applied in high-end equipment due to their compact structure, high efficiency, and low cost. However, vibration issues induced by gear meshing, flow pulsation, lubrication conditions, and housing resonance significantly degrade their operational performance, limiting the applications in high-pressure, high-speed, and large-displacement working conditions. Therefore, an in-depth investigation into the vibration generation mechanism and transmission characteristics of fuel gear pumps, along with effective vibration suppression, has become a critical challenge in this field. To promote the innovative development of vibration reduction technologies for fuel gear pumps, the recent progress on vibration dynamic mechanisms and suppression techniques is comprehensively reviewed. First, from the perspective of internal vibration excitation sources, the multi-physical dynamic modelling methods for rotor systems considering time-varying meshing stiffness of gears, fluid pressure pulsation, and lubrication of journal bearings are summarized. Second, from the viewpoint of vibration transmission paths, the current research status of experimental modal analysis with external excitation and operational modal analysis methods based on working data for fuel gear pumps is critically reviewed. Additionally, the advancements in vibration reduction technologies are systematically summarized, including housing structure optimization, gear tooth profile modification, relief groove design, and multi-stage gear pump configurations. Finally, the key challenges and future development opportunities in vibration reduction for fuel gear pumps are thoroughly discussed, providing theoretical guidance and research directions for improving fuel supply quality and service life.

Key words: fuel gear pump, dynamic modeling, vibration mechanism, modal analysis, vibration reduction

CLC Number:

TH113

ZHANG Ying, WEI Shijie, JIANG Pengfei, WANG Zhongyang, WU Tonghai, LEI Yaguo, CAO Junyi. Research Status and Challenges on Vibration Dynamic Mechanism and Control Technology for Fuel Gear Pumps[J]. Journal of Mechanical Engineering, 2026, 62(9): 104-130.

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URL: http://www.cjmenet.com.cn/EN/10.3901/JME.260306

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