Performance improvement of the cylinder block - valve plate contact in axial piston machines

轴向柱塞机中缸体-阀板接触的性能改进

• 批准号: 409173913
• 负责人: Professorin Dr.-Ing. Katharina Schmitz, since 9/2019
• 金额: --
• 依托单位: Institut für fluidtechnische Antriebe und Systeme (ifas)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/409173913?language=en
• 关键词: Performance; improvement; cylinder; block; valve

Tribological contacts in hydraulic axial piston machines are highly stresses bearings. Combinations of hydrostatic, hydrodynamic and solid contact effects are used to reach long lifetimes. For a deeper understanding of the mechanisms in this contact, within the completed previous project a combined approach research approach was undertaken. Experimental and simulative research leads to qualitative and quantitative results, making an assessment of the effects within the contact possible.Utilizing these results, the proposed project aims at an increased performance and efficiency of the tribological contact. Furthermore the current high performance of this contact can only be reached by using leaded materials. A hard-hard contact or a surface coating has not been successfully implemented. Results and methods from the previous project can be used to implement a lead free contact.The proven method of a combined research, using simulation and experiment will be continued in the proposed project. At first contact geometries will be developed, having advantages in terms of temperature distribution and hot spot formation. The following experimental research validates the simulation results and shows the feasibility. In a following step the material will be substituted or coated and further experiments performed. Results in the fields of contact mechanics, materials, coatings, heat and load distribution are essential subjects in this proposed project.

液压轴向活塞机中的摩擦接触是高应力轴承。流体静力学、流体动力学和固体接触效应的组合用于实现长寿命。为了更深入地了解这种接触的机制，在已完成的前一个项目中采取了综合方法研究方法。实验和模拟研究得出定性和定量的结果，从而可以评估接触内的影响。利用这些结果，拟议的项目旨在提高摩擦接触的性能和效率。此外，这种触头目前的高性能只能通过使用含铅材料来实现。硬-硬接触或表面涂层尚未成功实施。从以前的项目的结果和方法可以用来实现无铅接触。一个结合研究的方法，使用模拟和实验将继续在拟议的项目。首先，将开发接触几何形状，其在温度分布和热点形成方面具有优势。实验研究验证了仿真结果，表明了该方法的可行性。在接下来的步骤中，材料将被替换或涂覆，并进行进一步的实验。接触力学、材料、涂层、热量和载荷分布等领域的成果是该项目的重要课题。