Experimental Investigation of the Cylinder Block Movement in an Axial Piston Machine
Experimental Investigation of the Cylinder Block Movement in an Axial Piston Machine
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DOI：
10.1115/fpmc2015-9529
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发表时间：
2015-10
期刊：
影响因子：
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通讯作者：
S. Wegner;S. Gels;D. Jang;H. Murrenhoff
中科院分区：
文献类型：
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作者：
S. Wegner;S. Gels;D. Jang;H. Murrenhoff
轴向活塞机中流体力学和体积损失的最大份额是在活塞/气缸、缸体/阀板和滑靴/斜盘的摩擦学界面内产生的。流体静力和流体动力效应用于最小化固体摩擦、粘性摩擦和节流损失的总和。在这种类型的机器中，其他摩擦学界面对大多数操作点的效率损失影响较小。本文着重于实验研究，目的是进一步了解气缸体/阀板接触。这项研究是由德国研究基金会资助的一个项目的一部分，该项目将实验和模拟研究相结合，以确定影响这种摩擦学界面的影响。实验重点研究了气缸体的多向运动和接触内的摩擦力矩。因此，建立了一个试验台，能够测量缸体在各个自由度的运动和两部分之间的摩擦力矩。传感器系统是建立在一个标准的轴向柱塞泵的旋转组与一个球形缸体/阀板接触。泵的功能得以保持，并且可以在标准操作条件下进行测量，最高可达30mpa。给出了设计过程的步骤和测量系统的描述，并给出了气缸体在不同压力水平和速度下的运动测量结果。ASME版权所有©2015
The greatest share of hydromechanic and volumetric losses in axial piston machines are produced within the tribological interfaces piston / cylinder, cylinder block / valve plate and slipper / swash plate. Hydrostatic and hydrodynamic effects are used to minimise the sum of solid friction, viscous friction and throttle losses. Other tribological interfaces have minor influence on efficiency losses in most operating points in machines of this type.This paper focuses on experimental investigations with the objective to acquire further knowledge on the cylinder block / valve plate contact. The investigations are part of a project funded by the German Research Foundation in which experimental and simulative investigations are combined to identify the effects influencing this tribological interface.The experiments focus on the multi-directional movement of the cylinder block and the friction torque within the contact. Therefore a test rig was built, capable of measuring the cylinder block movement in all degrees of freedom and the friction torque between both parts. A sensor system is built around a standard rotary group of an axial piston pump with a spherical cylinder block / valve plate contact. The pump functionality is maintained and measurements under standard operating conditions up to 30 MPa are possible.Procedures of the design process and descriptions of the measuring system are presented, followed by results of the cylinder block movement measurement, comparing the behavior under different pressure levels and speeds.Copyright © 2015 by ASME