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Influence of Valve's Characteristic on Total Performance of Three Cylinders Internal Combustion water pump

Chinese Journal of Mechanical Engineering 2009年第1期22卷 91-96页

作者： ZHANG Hongxin ZHANG Tiezhu WANG Weichao College of Mechanical and Electronic Engineering Qingdao University Qingdao 266071 China Electronic Technology Institute of Vehicle Qingdao University Qingdao 266071 China

Intenal combustion pump （ICP） is a new type power device turning the thermal energy from fuel combustion into fluid pressure energy. Three cylinders prototype has just been developed. The study on the influence of valve＇s characteristic on ICP＇s total performance will found the base for its optimum design. Based on the theoretical and testing fruits of single cylinder prototype, the performance of the valves and complete appliance of the latest is simulated. When the natural frequency of valves is approximately to the round number times of the working frequency, volumetric efficiency is seriously low. The nominal rotational speed of the prototype is nearly to the speed where the volumetric efficiency is lowest, which is harmful to the normal work of ICP, so further structure optimization of valves should be carried out. The change of volumetric efficiency has great influence on the fuel consumption rate, output flow, effective thermal efficiency, effective power, and so on, but little on output pressure.

关键词： internal combustion engine water pump valve model performance

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Single-stage PV-powered boost inverter-fed permanent-magnet synchronous motor-driven water-pumping system

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Clean Energy 2022年第5期6卷 726-737页

作者： K.K.Prabhakaran Varsha Sunkara A.Karthikeyan Department of Electrical and Electronics Engineering National Institute of Technology KarnatakaSurathkalIndia

In this paper,a photovoltaic(PV)fed boost inverter-based permanent-magnet synchronous motor(PMSM)-driven water-pumping system for stand-alone applications is *** proposed system comprises PV panel,six switches,three inductors(L),three capacitors(C)and a water *** this work,the boost inverter is designed with a gain of two and thereby the direct current input required to run the motor is considerably ***,the size of the system is *** voltage gain factor depends upon the placement of the L and C components and their *** speed reference is generated using a perturb and observe maximum power point tracking *** control is employed to control a boost inverter-fed PMSM *** proposed system is simulated using a MATLAB®/Simulink®environment and experimental validation is performed on a PMSM laboratory prototype using a field programmable gate array *** simulation and experimental results demonstrate the effectiveness of the proposed system.

关键词： boost inverter MPPT PV PMSM water pump

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