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Electronic Unit Pump test bench Development and Pump Properties Research

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Journal of Beijing Institute of Technology 2006年第4期15卷 384-388页

作者：刘波澜黄英张付军赵长禄 School of Mechanical and Vehicular Engineering Beijing Institute of Technology Beijing 100081 China

A unit pump test bench is developed on an in-line pump test platform. The bench is composed of pump adapting assembly, fuel supply subsystem, lubricating subsystem and a control unit. A crank angle domain injection control method is given out and the control accuracy can be 0.1° crank degree. The bench can test both mechanical unit pump and electronic unit pump. A test model-PLD12 electronic unit pump is tested. Full pump delivery map and some influence factors test is done. Experimental results show that the injection quantity is linear with the delivery angle. The quantity change rate is 15% when fuel temperature increases 30 ℃. The delivery quantity per cycle increases 30 mg at 28 V drive voltage. The average delivery difference for two same type pumps is 5 %. test results show that the bench can be used for unit pump verification.

关键词： unit pump test bench control system experimental research

The Efficiency Improving of Traction Drive test bench with Supercapacitor Energy Storage System

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Journal of Mathematics and System Science 2012年第9期2卷 570-575页

作者： Genadijs Zaleskis Viesturs Brazis Institute of Industrial Electronics and Electrical Engineering Riga Technical University 1 Kronvalda blvd. Riga L V-I O I O Latvia

For development of passenger electrical transport, it is necessary to use energy more rationally. One of methods of vehicle power efficiency increase is installation of on-board energy storage systems. For studying of system operation, it is necessary to carry out a lot of experiments, therefore it is favorable to use the test bench and its computer model for reduction of the number of physical experiments. In this article, the results of computer modeling for the optimization of traction drive test bench by adjusting of the operation parameters of supercapacitor energy storage are described. test bench operation is considered in cases of the energy storage system working at various selected supercapacitor initial voltages. Maximal increase of possibility of vehicle test bench regenerative braking with minimal decrease of autonomous power supply mode possibility is investigated. There is estimated the energy storage system efficiency improving measures dependence from supercapacitor operational voltage ranges. Parameters at which the minimum losses of energy are observed are revealed. Dependence of energy storage system discharge power on the most admissible supercapacitor current is established.

关键词： Energy storage supercapacitor test bench computer modeling passenger electrical transport.

High RF power tests of the first 1.3 GHz fundamental power coupler prototypes for the SHINE project

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Nuclear Science and Techniques 2022年第1期33卷 107-119页

作者： Zhen-Yu Ma Shen-Jie Zhao Xu-Ming Liu Yue-Chao Yu Hong-Ru Jiang Xiang Zheng Qiang Chang Zi-Gang Zhang Kai Xu Yan Wang Yu-Bin Zhao Hong-Tao Hou Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201204China

The Shanghai High Repetition Rate XFEL and Extreme Light Facility(SHINE)project will use 6001.3 GHz fundamental power couplers,which are modified based on TTF-Ⅲ power couplers,for continuous-wave operation with input power up to approximately 7 *** first batch of 20 sets of 1.3 GHz coupler prototypes was fabricated from three domestic manufacturers for the SHINE *** better characterize the radio frequency conditioning phenomena for validating the performance of power couplers,a room temperature test stand was designed,constructed,and commissioned for the SHINE 1.3 GHz power *** addition,a horizontal test cryostat was built to test the 1.3 GHz superconducting cavities,fundamental power couplers,tuners,and other components as a *** results of these tests indicate that the 1.3 GHz couplers are capable of handling up to 14 kW continuous ***,the main aspects of the radio frequency design and construction of the test stand,along with the test results of the high-power conditioning of the 1.3 GHz couplers,are described.

关键词： Superconducting accelerating cryomodule 1.3 GHz fundamental power coupler RF conditioning test bench Horizontal test cryostat

Facilitating Water electrolysers for electricity-grid services in Europe through establishing standardized testing protocols

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Clean Energy 2020年第4期4卷 379-388页

作者： Shi You Regine Reissner Christoph Imboden Cyril Bourasseau Pablo Marcuello Daniel Greenhalgh Ben Green Laura Abadía Vanesa Gil Marius Bornstein Yi Zong Xu Chen Chresten Træholt Department of Electrical Engineering Technical University of DenmarkElektrovej 325DK-2800 Kgs.LyngbyDenmark German Aerospace Center Institute of Engineering ThermodynamicsPfaffenwaldring 38-4070569 StuttgartGermany Lucerne School of Engineering and Architecture Technikumstrasse 21CH-6048 HorwSwitzerland CEA LitenDepartment of Biomass and Hydrogen Technologies17 Avenue des Martyrs38000 GrenobleFrance Industrie Haute Technologie Clos-DonrouxC.P.2281870 Monthey 1Switzerland ITM Power Altas way 22SheffieldS47QQUK Foundation for the Development of New Hydrogen Technologies in Aragon Ctra.N-330akm.56622197 HuescaSpain NEL Department of Hydrogen ElectrolyserP.O.Box 24NO-3671 NotoddenNorway

Electrolysers,which convert electricity into hydrogen,have the potential to offer a variety of electrical-grid services,therefore facilitating the integration of intermittent renewables into electrical *** various activities that aim to unlock this hidden value,the 3-year European Union project QualyGridS launched in 2017 aims to establish standardized testing protocols for electrolysers to perform electricity-grid *** paper shares experience and intermediate results of QualyGridS with respect to the testing protocols,test benches and testing *** results of this work facilitate mutual understanding between the electricity industry and the hydrogen industry,support further development of the cross-sector testing standards,guide the design and selection of grid-service-oriented electrolyser applications and foster the transition towards a fossil-free-energy future based on high shares of hydrogen and other renewable solutions.

关键词： electrolyser hydrogen electrical-grid service QualyGridS test bench testing protocols

Effect of travel speed on seed spacing uniformity of corn seed meter

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International Journal of Agricultural and Biological Engineering 2017年第4期10卷 98-106页

作者： Liu Quanwei He Xiantao Yang Li Zhang Dongxing Cui Tao Qu Zhe Yan Bingxin Wang Mantao Zhang Tianliang College of Engineering China Agricultural UniversityBeijing 100083China Soil-Machine-Plant Key Laboratory of the Ministry of Agriculture Beijing 100083China

Both seeding performance of seed metering unit and travel speed of seed planter have significant effects on seeding quality,thereby affecting crop growth and *** order to determine the effects of different travel speeds on seed spacing uniformity,four different types of seed meters were evaluated at five different travel speeds on seed meter test bench and in *** tested seed meters included a finger pickup seed meter,a scoop-wheel seed meter,an air-pressure type seed meter and an air-blowing type seed *** seeding performance of the horizontal distribution of seeds within a row was described by using the coefficient of variation,the quality of feed index,the multiple index and the miss-seeding *** were performed in laboratory and field,*** indicated that different travel speeds have statistically significant effects on seed spacing *** four types of seed meters performed better on the seed meter test bench than in the *** of variation increases and quality of feed index decreases as the travel speed of seed planter *** best seed spacing uniformity was obtained with the air-pressure type seed meter,followed with the air-blowing type seed meter,the finger pickup seed meter and the scoop-wheel seed *** were considerable differences between the performances of the scoop-wheel seed meter in the bench test and field test;the seeding qualities were much better in the bench test than in the field *** scoop-wheel seed meter is more sensitive to vibration than the other types of seed meters.

关键词： corn seed meter travel speed seed spacing uniformity precision corn planter field test test bench

Experimental tests of the Operating Conditions of a Micro Gas Turbine Device

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Journal of Energy and Power Engineering 2015年第4期9卷 326-335页

作者： Roberto Capata Department of Mechanical and Aerospace Engineering University of Roma "Sapienza " Roma 00184 Italy

The aim of this work is to analyze the performance of a commercial micro gas turbine, focusing on the analysis of the fuel consumption and the outlet compressor and turbine temperature at various rpm, and to evaluate and compare the efficiency of the device. A test bench has been assembled with the available equipment in the laboratory of the department of mechanical and aerospace engineering in Roma. By using the software supplied by the manufacturer, the evaluation of the operating performance of the device at different speeds has been performed, obtaining all the values of interest.

关键词： Gas turbine test bench experimental tests.

Investigation of Shear and Thermal Characteristics of Polishing Interface in Soft Pad Polishing Process

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Investigation of Shear and Thermal Characteristics of Polish...