scholarly journals Experimental study of brushless generator with integrated exciter

2020 ◽  
Vol 28 (3) ◽  
pp. 125-138
Author(s):  
Yuri V. Zubkov ◽  
Sergey Y. Kaurov ◽  
Vladislav E. Vereshagin
Keyword(s):  
Mathematical Model ◽  
Diesel Engine ◽  
Internal Combustion Engine ◽  
Dynamic Characteristics ◽  
Combustion Engine ◽  
Electric Energy ◽  
Field Tests ◽  
Internal Combustion ◽  
Starter Generator ◽  
The Mathematical Model

The paper studies an integrated starter-generator based on a synchronous machine with PM excitation (ISG), used to start an internal combustion engine (ICE) of an autonomous energy facility or vehicle and supply electric energy to its consumers. The purpose of the work is to obtain a mathematical model of the starting mode in the form of a system of differential equations, its virtualization by means of the Matlab Simulink package and a diesel engine starting simulation using ISG with the study of the starting process dynamic characteristics. It is also required to carry out experimental verification of theoretical results through field tests of a prototype starter-generator to confirm the mathematical model adequacy. Difficulties in the analysis and synthesis of ISG are due to the complexity of electromechanical energy conversion processes in it and the trapezoidal nature of the magnetic field spatial distribution in the gap, which was established when solving the magnetostatic problem by the finite element method. These features make it difficult to use traditional research methods. The mathematical model of the operation starting mode, obtained under a number of assumptions that do not affect the nature of electromechanical processes, makes it possible to investigate the ICG static and dynamic characteristics during the electric start of the internal combustion engine. The ISG start-up process simulation was carried out on the basis of equations describing the starter operation using control systems both without starting current limitation and with limitation and providing a sufficient starting torque. Modeling made it possible to determine the start duration and the change of the electromagnetic torque, inverter and winding currents. A prototype ISG was designed and manufactured. Full-scale tests of the diesel engine electric start system were carried out. The results obtained confirmed the adequacy of the developed mathematical model and the possibility of its use in the study of the ISG other specific operating modes.

scholarly journals Dynamic Properties Modeling Analysis of the Rubber-Metal Elements for Electric Drive

2021 ◽  
Vol 71 (1) ◽  
pp. 19-26
Author(s):  
Danko Ján ◽  
Bucha Jozef ◽  
Milesich Tomáš ◽  
Magdolen Ľuboš ◽  
Kevický Iogr ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Internal Combustion Engine ◽  
Electric Motor ◽  
Combustion Engine ◽  
Dynamic Properties ◽  
Internal Combustion ◽  
Modeling Analysis ◽  
Virtual Vehicle ◽  
Noise Vibration ◽  
The Mathematical Model

Abstract The gradual increase in the volume of electric vehicles leads engineers to solve completely new problems of NVH (noise, vibration and harshness) One of the solutions is the use of rubber mounts to hold the electric motor of the vehicle’s powertrain. This article deals with a rubber mount used to insulate vibrations from the propulsion system to the rest of the vehicle. Since the electric motor produces a different spectrum of vibrations and noise than the internal combustion engine (it produces lower amplitudes, but in a wider frequency band), it is necessary to adapt the design of the rubber mounts. This article deals with the possibility of using a mathematical model that can be used in a virtual vehicle model. It compares the differences in the vibrations of the internal combustion engine and the electric motor. From the results measured on the experimental model, the parameters for the FEM model and the mathematical model were identified. At the end of the article, the results from the experiment are compared with the results from the simulations.

scholarly journals Determination of the Vertical Load on the Carrying Structure of a Flat Wagon with the 18–100 and Y25 Bogies

2021 ◽  
Vol 11 (9) ◽  
pp. 4130
Author(s):  
Oleksij Fomin ◽  
Alyona Lovska ◽  
Václav Píštěk ◽  
Pavel Kučera
Keyword(s):  
Mathematical Model ◽  
Fatigue Strength ◽  
Service Life ◽  
Dynamic Characteristics ◽  
Dynamic Load ◽  
Field Tests ◽  
Vertical Load ◽  
Mathcad Software ◽  
The Mathematical Model

The study deals with determination of the vertical load on the carrying structure of a flat wagon on the 18–100 and Y25 bogies using mathematic modelling. The study was made for an empty wagon passing over a joint irregularity. The authors calculated the carrying structure of a flat wagon with the designed parameters and the actual features recorded during field tests. The mathematical model was solved in MathCad software. The study found that application of the Y25 bogie for a flat wagon with the designed parameters can decrease the dynamic load by 41.1% in comparison to that with the 18–100 bogie. Therefore, application of the Y25 bogie under a flat wagon with the actual parameters allows decreasing the dynamic loading by 41.4% in comparison to that with the 18–100 bogie. The study also looks at the service life of the supporting structure of a flat wagon with the Y25 bogie, which can be more than twice as long as the 18–100 bogie. The research can be of interest for specialists concerned with improvements in the dynamic characteristics and the fatigue strength of freight cars, safe rail operation, freight security, and the results of the research can be used for development of innovative wagon structures.

Analysis and Research of the Combustion Process of YN4100QB Diesel Engine

2013 ◽  
Vol 744 ◽  
pp. 35-39
Author(s):  
Lei Ming Shi ◽  
Guang Hui Jia ◽  
Zhi Fei Zhang ◽  
Zhong Ming Xu
Keyword(s):  
Diesel Engine ◽  
Internal Combustion Engine ◽  
Combustion Chamber ◽  
Optimization Design ◽  
Combustion Engine ◽  
Geometric Model ◽  
Combustion Process ◽  
Internal Combustion ◽  
Engine Combustion ◽  
Exhaust Noise

In order to obtain the foundation to the research on the Diesel Engine YN4100QB combustion process, exhaust, the optimal design of combustion chamber and the useful information for the design of exhaust muffler, the geometric model and mesh model of a type internal combustion engine are constructed by using FIRE software to analyze the working process of internal combustion engine. Exhaust noise is the main component of automobile noise in the study of controlling vehicle noise. It is primary to design a type of muffler which is good for agricultural automobile engine matching and noise reduction effect. The present car mufflers are all development means. So it is bound to cause the long cycle of product development and waste of resources. Even sometimes not only can it not reach the purpose of reducing the noise but also it leads to reduce the engine dynamic. The strength of the exhaust noise is closely related to engine combustion temperature and pressure. The calculation and initial parameters are applied to the software based on the combustion model and theory. According to the specific operation process of internal combustion engine. Five kinds of common operation condition was compiled. It is obtained for the detailed distribution parameters of combusted gas temperature pressure . It is also got for flow velocity of the fields in cylinder and given for the relation of the parameters and crankshaft angle for the further research. At the same time NOx emissions situation are got. The numerical results show that not only does it provide the 3D distribution data in different crank shaft angle inside the cylinder in the simulation of combustion process, but also it provides a basis for the engine combustion ,emission research, the optimization design of the combustion chamber and the useful information for the designs of muffler.

Improving the design of an internal combustion engine with counter pistons

2021 ◽  
pp. 3-6
Author(s):  
Keyword(s):  
Internal Combustion Engine ◽  
Dynamic Characteristics ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Maximum Torque ◽  
Moment Vector ◽  
Engine Design ◽  
Torque Moment ◽  
Dimensional Parameters ◽  
Crank Mechanism

A new layout of a two-cylinder internal combustion engine with counter-pistons is proposed, which increases its efficiency by reducing the pressure angles. The dynamics of the proposed arrangement of a two-shaft crank-slider internal combustion engine, which provides maximum torque moment at maximum gas pressure in the minimum volume of the combustion chamber, is investigated, which reduces the load on the engine design and its weight and dimensional parameters. The research was carried out by comparing the dynamic characteristics of different engines using vector modular models and the KDAM program. Keywords: internal combustion engine, crank mechanism, indicator diagram, dynamic characteristics, torque moment, vector, contour, model, module [email protected]

scholarly journals Study of an Electric Energy Generation System from Exhaust Waste Recovery from an Internal Combustion Engine

2018 ◽  
Vol 16 (1) ◽  
pp. 51-58
Author(s):  
Jorge de-J. Lozoya-Santos ◽  
Jonathan Rivas Torres ◽  
Adán Sáenz Herrera ◽  
Julio C. Salinas-Maldonado ◽  
Eduardo Mariscal Hay ◽  
...  
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Electric Energy ◽  
Energy Generation ◽  
Internal Combustion ◽  
Generation System ◽  
Waste Recovery
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