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.

该PFI：空气技术翻译项目的重点是翻译有关如何以简单有效的方式改变液压泵和电动机的力量的发现，以满足各种应用中高效液压的需求。 这项新技术称为“部分中风活塞加压（PSPP）”。 液压泵和电动机通常以最大功率的一小部分运行，在该操作点运行时，它们通常非常低效。 PSPP很重要，因为它可以在经常发生的低功率运行下节省能源，从而减少了全球能源消耗。 电源将保存在使用液压技术的各种应用中，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，起落架和机翼式发音）。 此外，泵和电动机的功耗降低可以促进巨大的系统级节省；例如，发动机和冷却系统也可以缩小尺寸。 该项目还将通过扩大液压提供最佳解决方案的产品领域来产生经济影响；例如，PSPP泵和电动机可能会使液压混合动力汽车与电动混合动力车竞争，它们可能促进可再生能源（例如风能和波浪能）的捕获和存储。 该项目将导致PSPP泵的工作原型，将在打滑装载机上演示。 该项目中开发的泵和电动机在利用水力机械旋转阀实现PSPP方面是独一无二的。 它们在内部控制电路中仅利用液压功率方面也是独一无二的。例如，不需要电力控制或机械凸轮。 与该市场领域的领先竞争技术相比，这些功能可提供更高的耐用性，增加时间，降低的总时间和生命周期成本，并提高维护性，而竞争性技术相比，该项目利用了电融合阀。该项目解决了以下技术间隙，因为它通过在商业效率上转化为商业效率的销售效果，该项目从以下技术差异来解决，这是从事的技术差距：分析性的效率转化为实验，该方法是在分析的，分析的方法中，该方法是在分析的，分析的方法中，该方法是在分析的，分析的效果触发的方法。系统。 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，通过采用先进的制造策略，将降低PSPP泵和电动机的成本。 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Skid-Steer-Steer装载机上的优势来获得技术翻译体验。该项目与Komotion Technologies，Ltd互动，以指导从事这项技术转换工作的商业化方面，从研究发现从研究发现到商业现实。 Komotion在从概念开发中，通过生产推出并进入大规模全球商业化方面领导新的液压泵和运动技术具有丰富的实践经验。该项目由工业创新和合作伙伴关系和工程教育部共同资助；反映了该项目与两个部门及其计划的各个目标的一致性。

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.