PFI:AIR - TT: High Efficiency Hydraulic Pump-Motors Employing Partial Stroke Piston Pressurization

PFI:AIR - TT：采用部分冲程活塞增压的高效液压泵电机

• 批准号: 1700747
• 负责人: Thomas Chase
• 金额: $ 20万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-01 至 2020-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1700747&HistoricalAwards=false
• 关键词: PFI; AIR; TT; Efficiency; Hydraulic

This PFI: AIR Technology Translation project focuses on translating a discovery on how to vary the power of hydraulic pumps and motors in a simple and effective manner to fill the need for high efficiency hydraulics in a variety of applications. The new technology is called "partial stroke piston pressurization (PSPP)". Hydraulic pumps and motors are often run at a small fraction of their maximum power, and they are typically very inefficient when run at that operating point. PSPP is important because it saves energy at low power operation, which occurs frequently, thereby reducing global energy consumption. Power will be saved in a large variety of applications where hydraulics are employed including: off-road vehicles (e.g., construction equipment), stationary equipment (e.g., hydraulic elevators and industrial presses), and aircraft (e.g., landing gear and wing articulation). Furthermore, reduced power consumption by pumps and motors enables dramatic systems-level savings; for example, engines and cooling systems can also be down-sized. The project will also have economic impact by expanding the domain of products where hydraulics provide optimal solutions; for example, PSPP pumps and motors may make hydraulic hybrid on-road vehicles competitive with electric hybrids, and they may facilitate the capture and storage of renewable energies, such as wind and wave energy. The project will result in a working prototype of a PSPP pump to be demonstrated on a skid-steer loader. The pumps and motors developed in this project are unique in utilizing hydro-mechanical rotary valves to implement PSPP. They are also unique in utilizing hydraulic power exclusively in internal control circuits; e.g., no electric controls nor mechanical cams are needed. These features provide higher durability, increased up-time, lower total and life-cycle costs, and increased ease of maintenance when compared to the leading competing technology in this market space, which instead utilizes electro-hydraulic valving.This project addresses the following technology gap(s) as it translates from research discovery toward commercial application: First, analytically projected efficiency gains will be experimentally demonstrated on an existing first prototype by developing improved manufacturing methods for the valving systems. Second, efficiency will be further increased by applying a rigorous analysis-driven design methodology to optimize the valving systems. Third, the cost of PSPP pumps and motors will be reduced through the application of advanced manufacturing strategies. In addition, graduate and undergraduate students involved with the project will receive technology translation experiences by working with industrial manufacturers to demonstrate the advantages of PSPP pumps on skid-steer loaders.The project engages KoMotion Technologies, LTD, to guide commercialization aspects in this technology translation effort from research discovery toward commercial reality. KoMotion has extensive practical experience in leading new hydraulic pump and motor technology from concept development, through production launch, and into large scale global commercialization.This project is jointly funded by the Division of Industrial Innovation and Partnerships and the Division of Engineering Education; reflecting the alignment of this project with the respective goals of the two divisions and their programs.

这个PFI：空气技术翻译项目专注于翻译一项关于如何以简单而有效的方式改变液压泵和马达的功率，以满足各种应用中对高效率液压的需求的发现。这项新技术被称为“部分冲程活塞增压(PSPP)”。液压泵和马达通常以其最大功率的一小部分运行，当它们在该工作点运行时，效率通常非常低。PSPP很重要，因为它在经常发生的低功率操作下节省能源，从而降低全球能源消耗。使用液压的各种应用将节省电力，包括：越野车(例如，建筑设备)、固定设备(例如，液压电梯和工业压力机)和飞机(例如，起落架和机翼铰接)。此外，通过泵和马达降低功耗可以实现系统级的显著节省；例如，发动机和冷却系统也可以缩小尺寸。该项目还将产生经济影响，扩大液压系统提供最佳解决方案的产品领域；例如，PSPP泵和马达可能使液压混合动力道路车辆与电动混合动力汽车竞争，并可能促进可再生能源的捕获和储存，如风能和波能。该项目将产生PSPP泵的工作原型，并在滑动转向装载机上进行演示。该项目开发的泵和电机在利用液压机械旋转阀实现PSPP方面是独一无二的。它们还独一无二地只在内部控制回路中使用液压动力；例如，不需要电子控制或机械凸轮。这些特点提供了更高的耐用性，更长的正常运行时间，更低的总成本和生命周期成本，以及更容易维护，与该市场领域领先的竞争技术相比，它使用电液压阀。该项目解决了以下技术差距(S)，因为它将从研究发现转化为商业应用：首先，通过开发改进的阀门系统制造方法，将在现有的第一个原型上实验演示分析预测的效率收益。其次，通过应用严格的分析驱动设计方法来优化阀门系统，将进一步提高效率。第三，PSPP泵和电机的成本将通过应用先进的制造策略来降低。此外，参与该项目的研究生和本科生将通过与工业制造商合作，展示PSPP泵在滑动装载机上的优势，获得技术转换经验。该项目聘请KoMotion Technologies，Ltd.指导这项技术转换工作中的商业化方面，从研究发现转向商业现实。KoMotion在引领新的液压泵和马达技术从概念开发、生产推出到大规模全球商业化方面拥有丰富的实践经验。该项目由工业创新与伙伴关系部门和工程教育部门联合资助，反映了该项目与两个部门各自的目标及其计划的一致性。

项目成果

Experimental Testing of a Variable Displacement Pump/Motor That Uses a Hydro-Mechanically Timed Digital Valving Mechanism to Achieve Partial-Stroke Piston Pressurization (PSPP)

使用液压机械定时数字阀机构实现部分冲程活塞增压 (PSPP) 的变量泵/马达的实验测试

• DOI: 10.1115/fpmc2019-1693
• 发表时间: 2020
• 期刊: 2019
• 作者: Montzka, Alissa;Epstein, Nathan;Rannow, Michael;Chase, Thomas R.;Li, Perry Y.
• 通讯作者: Li, Perry Y.