scholarly journals Design Optimization of Electrodynamic Structure of Permanent Magnet Piston Mechanical Electric Engine

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6313
Author(s):  
Yun Sun ◽  
Hongxin Zhang ◽  
Zhen Liang ◽  
Jian Yang
Keyword(s):  
Permanent Magnet ◽  
Internal Combustion Engines ◽  
Combustion Engines ◽  
Theoretical Evaluation ◽  
New Type ◽  
Working Principle ◽  
Overall Performance ◽  
Electric Engine ◽  
The Magnetic Field ◽  
Electrodynamic Structure

To meet the demand of multiple power requirements, and enhance power utilization, a new type of dual-element electricity unit is designed in this study, which is a permanent magnet piston mechanical electric engine. Based on the analysis method of traditional internal combustion engines and linear generators, the working principle of the engine and the magnetic field distribution in the electrodynamic structure are analyzed, the machine dynamics model and electrodynamics model of the engine are established, then the theoretical evaluation is additionally established using finite elements. Based on this, an optimization model is constructed with the electrodynamic shape dimension as the optimization variable, with the intention of growing the output power. The optimization of the engine electrodynamic shape is executed via the use of the finite aspect approach and the NLPQL optimization algorithm integrated. The results show that the optimized engine output electricity expanded to 8.40 w, which is 18.81% greater than before optimization. An experimental prototype is developed, and the output voltage of the prototype is measured to verify the precept and overall performance of the new structure.

Preliminary Development of Electric Motorcycle Engine for Sport Aviation Vehicles

2012 ◽  
Vol 225 ◽  
pp. 250-254
Author(s):  
Mohd Khairuladha Jamil ◽  
Mohd Ezwani Kadir ◽  
Mohamad Zikri Zainol ◽  
Abu Hanifah Abdullah ◽  
Abu Zaid Bakar
Keyword(s):  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Sport Activity ◽  
Internal Combustion ◽  
Bench Test ◽  
Combustion Engines ◽  
Battery Technology ◽  
Carbon Dioxide Co2 ◽  
Electric Engine ◽  
Aircraft Application

Flying activities of sport aviation vehicles normally use Internal Combustion Engines (ICE) for their powerplant, which emits Carbon Dioxide (CO2) and also produces noise. Environmental issues regarding harmful gas emission and noise may restrict the sport aviation activities and resulting in reduction of interest in flying as a sport activity. The feasible solution for this issue is by replacing the Internal Combustion Engines (ICE) with Electric Engines on all sport flying vehicles. The Modenas CTric Electric Engines was tested to measure the parameters required by comparable Internal Combustion Engine used by sport aviation flyers. Other parameters; engine endurance, temperature and performance, were also tested. The bench test was conducted using specially design test rig. The results show that there is a possibility for the Modenas CTric Motorcycles Electric Engine used as an alternate source of powerplant for paramotors and microlight aircraft. However, there is penalty on the vehicle payloads due to weight of the battery. Lighter battery technology integration is to be developed to reduce the weight of the flight vehicles. This study serves as a platform for further work in electric engine technology for commercial aircraft application. Availability of green engine (no emission and noise output) will generate more interest in sport aviation activities and prepare for the future commercial Electric Engine aircraft application.

scholarly journals Optimization of volumetric efficiency of a small wankel engine using genetic algorithm

2020 ◽  
Vol 24 (1 Part A) ◽  
pp. 101-111
Author(s):  
Yan Zhang ◽  
Jinxiang Liu ◽  
Zhengxing Zuo ◽  
Shuai Zhang
Keyword(s):  
Internal Combustion Engines ◽  
Volumetric Efficiency ◽  
Combustion Engines ◽  
Closing Time ◽  
Rotary Engine ◽  
Overall Performance ◽  
Wankel Engine ◽  
Opening And Closing ◽  
Cycle Efficiency ◽  
Efficiency Engine

In this work, port crank angles strategies for maximizing engine volumetric efficiency of a commercial rotary engine are studied. The internal combustion engines computer program, which simulates an actual working processes, has been used. Overall performance characteristics such as the cycle efficiency, engine power are calculated by a mathematical model. The model is calibrated with data obtain from a measured in-cylinder pressure, and validated against the experimental data. In-take opening and closing time, exhaust opening and closing time are chosen as optimization variables when volumetric efficiency was taken as the objective function. First, the intake opening time is the only optimization variable and it can be found that intake opening time is in advance as engine speed is increased. Second, four variables including intake opening and closing, exhaust opening and closing have been taken as the optimization variables, a further increase in volumetric efficiency was obtained, with the highest gain being of 1.03% at 17000 rpm. But opening the exhaust opening very late will reduce the power.

scholarly journals Design and thermal analysis of a novel permanent magnet-friction integrated brake for vehicle

2020 ◽  
Vol 24 (3 Part A) ◽  
pp. 1827-1834
Author(s):  
Kuiyang Wang ◽  
Ren He ◽  
Jinhua Tang ◽  
Ruochen Liu
Keyword(s):  
Magnetic Field ◽  
Temperature Field ◽  
Permanent Magnet ◽  
Thermal Contact ◽  
Structure Parameters ◽  
New Type ◽  
Braking Process ◽  
D Model ◽  
The Magnetic Field ◽  
Friction Brake

This article focuses on a new type of permanent magnet-friction integrated brake. The design scheme of integrated brake is proposed. Taking the maximization of braking moment and the minimization of volume as the dual optimization objectives, the particle swarm optimization algorithm is used to optimize the integrated brake, and the main structure parameters of the integrated brake are obtained. Based on the obtained structure parameters, the 3-D model of integrated brake is established. The mathematical models of electromagnetic field and temperature field of integrated brake are given, respectively. Taking a typical braking process as an example, the magnetic field of integrated brake is analyzed based on COMSOL software, which verifies the correctness of the design model of permanent magnet brake. The eddy current loss in the magnetic field of permanent magnet brake and the thermal contact of friction brake are taken as heat sources of the integrated brake, then the temperature field of integrated brake is analyzed. The analysis results show that the integrated brake meets the requirements of braking performances, and improves the heat recession resistance compared with the traditional friction brake.

scholarly journals Features of the choice of power unit for electric tricycle

2019 ◽  
Vol 140 ◽  
pp. 02010
Author(s):  
Dmitry Stakhin ◽  
Kirill Goncharov
Keyword(s):  
Power Plant ◽  
Drag Coefficient ◽  
Power Unit ◽  
Internal Combustion Engines ◽  
Economic Power ◽  
Combustion Engines ◽  
Dynamic Calculation ◽  
Air Drag ◽  
Electric Engine ◽  
Main Operating

The article considers the bolide Shell Eco Marathon, which main operating purpose is to cover the maximum distance with the minimum fuel consumption. With the aim of providing the bolide with technical and operational indicators, it is appropriate to solve the problem of decreasing the bolide’s mass, the air drag coefficient, and also the choice of the economic power plant. The basic formulas for the engine traction-dynamic calculation are presented. Due to the results of the calculation, the conclusion about profitability of the power plant is made. There is also a description of the principle of the electric engine and its main advantages comparing to the internal combustion engines.

scholarly journals An Overview Study of Camless Combustion Engines

2019 ◽  
Vol 4 (9) ◽  
pp. 41-45
Author(s):  
Thanh Hai Truong ◽  
Van Huong Dong
Keyword(s):  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Camless Engines ◽  
Primary Means ◽  
Camless Engine ◽  
Overall Performance ◽  
Valve Operation

The internal combustion engine (ICE) finds its place in the market with latest design modifications in various components to improve efficiency, economy and overall performance. However, one component has remained unchanged in the internal combustion engine development i.e., the camshaft, has been the primary means of controlling the valve actuation and timing, and therefore, influencing the overall performance of the vehicle. Camless technology is capturing the future of internal combustion engines. It has been known to man that if valves could be controlled independently in an Internal Combustion Engine then there would be benefits like increased power, reduced emissions and increased fuel economy. In the camless technology valve motion is operated by valve actuators of electro-mechanical and electro-hydraulic type. In this paper we compare camless valve operation with conventional valve operation and we deal with the valve actuating mechanisms of camless engine by considering the electromechanical and electrohydraulic actuators as the important types of actuating valves in camless engines.

A Novel High-Power Magnetic Transmission System Based on Magnetic Conductivity Modulation Principle

2017 ◽  
Author(s):  
Mo Tao ◽  
Jun Wu ◽  
Zhiwu Ke ◽  
Xianling Li ◽  
Yong Li
Keyword(s):  
Finite Element ◽  
Permanent Magnet ◽  
High Power ◽  
Nuclear Power ◽  
High Reliability ◽  
Transmission System ◽  
High Power Field ◽  
New Type ◽  
Working Principle ◽  
Magnetic Conductivity

Due to the increasingly complexity of the nuclear power device system, the demands for its performance and security become rather high. There is a large number of rotating machinery working in the nuclear power plant.The static and dynamic misalignment between the rotating mechanical rotors may exist for various reasons like installation error, loading deformation, thermal expansion deformation and etc.Both of the radial vibration and the axial vibration can be generated by the misalignment. The security of nuclear power is severely threatened by these vibrations. Compared with the mechanical gears, the merits of Field Modulated Magnetic Transmission System Based on Magnetic Conductivity Modulation Principle are remarkable.Since it has a high reliability, lower noise, smaller vibration and a capacity of protecting itself during overload. It also can reduce maintenances, moreover there is a physical isolation between input and output in the new system.Besides,the traditional magnetic transmission system has only a low torque transmitting density.But by the use of efficient permanent magnet, the new type magnetic field modulation gears’ high torque transmitting density is comparable to the mechanical ones, even better then them. The major work of this paper is extension. Researching of the Field Modulated Magnetic Transmission System (FMMTS) based on Magnetic Conductivity Modulation Principle. Considering about the particularity of the working principle and structure of the FMMTS.First the author studied and analyzed its working principle in details by using analytic method.Then deduced the mathematical relationship of the pole pairs of permanent magnet of inner rotor,the number of copper core in magnetic adjusting loop and the pole pairs of permanent magnet of outer rotor.After that, a mathematical model of torque and rotational speed over three factors: the inner rotor, the outer rotor and the magnetic adjusting loop, were modoled. On the basis of principle analysis, the author verified the medol and did some further analysis by finite element simulating.Then we obtained the torque transmission characteristics of the Field Modulated Magnetic Transmission System, including the characteristics of Static torque and steady torque. Based on the above researching, the author put forward the idea of the new type three-layer permanent magnet excitation High-power Field Modulated Magnetic Transmission System based on Halbach tech, that’s middle layer is also permanent magnet. By using the finite element method to analyze its magnetic flux distribution and torque characteristics.Compared with FMMTS under the same size, the new type system improved the power density dramatically.

scholarly journals Comparison and Analysis of Magnetic-Geared Permanent Magnet Electrical Machine at No-Load

2014 ◽  
Vol 63 (4) ◽  
pp. 683-692 ◽  
Author(s):  
Xiping Liu ◽  
Dong Chen ◽  
Liang Yi ◽  
Chao Zhang ◽  
Min Wang
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Quantitative Comparison ◽  
Electrical Machine ◽  
Element Analysis ◽  
New Type ◽  
High Torque ◽  
Comparison And Analysis ◽  
Application Fields ◽  
The Magnetic Field

Abstract Magnetic-geared permanent magnet (MGPM) electrical machine is a new type of machine by incorporating magnetic gear into PM electrical machine, and it may be in operation with low-speed, high-torque and direct-driven. In this paper, three types of MGPM machines are present, and a quantitative comparison among them is performed by finite element analysis (FEA). The magnetic field distribution, stable torque and back EMF are obtained at no-load. The results show that three types of MGPM machine are suitable for different application fields respectively according to their own advantages, such as high torque and back EMF, which form an important foundation for MGPM electrical machine research.

Study of YSZ Amperometric Oxygen Sensor with a Dense Barrier Layer

2007 ◽  
Vol 280-283 ◽  
pp. 431-434 ◽  
Author(s):  
Xing Shi ◽  
Yue Zhang
Keyword(s):  
Diffusion Barrier ◽  
Internal Combustion Engines ◽  
Oxygen Sensor ◽  
Composite Electrode ◽  
Low Cost ◽  
Limiting Current ◽  
Combustion Engines ◽  
Lean Burn ◽  
New Type ◽  
And Diffusion

A new type of amperometric oxygen sensor was developed by an approach of co-pressing and co-sintering YSZ solid electrolyte. A dense LSM+YSZ composite electrode which was used as both cathode and diffusion barrier. Pre-sintered composite and YSZ powders were dry-pressed together to form a sheet with dual-layer of LSM+YSZ/YSZ. The sheet was then sintered at 1450°C. The anode was made of Pt paste, which was printed on to the other side of YSZ. The experiment results showed that the oxygen sensor exhibited a quite low operating temperature. At 400°C, the limiting current appeared in the voltage from 0.7 to 1.2V and the limiting current was a good linear relationship with the oxygen concentration up to 10 %. The sensor has some excellent features such as a rapid response, no reference gas, simple configuration and low cost. Taken together with the chemical stability of the diffusion barrier, the sensor is suitable for the control of air-to-fuel ratio in lean-burn internal combustion engines.

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