Linear Electric Generator of Reciprocating Motion for Power-Generating Plants Based on an Internal-Combustion Engine with a Free-Piston. The State of the Question

MFPSE, Micro Free Piston Swing Engine, is a new type of miniature internal combustion engine based on the working principle of two-stroke swing engine. The successful development and operation of this type of miniature internal combustion engine provide important significance for the miniaturization of the internal combustion engine, and provide a number of important research theory, computation method and experimental data. In this article, according to the work characteristics and co-ordination requirements of MFPSE (Micro Free Piston Swing Engine), whose strain interference is analyzed using finite element analysis software, the problems and interference of the center pendulum and cylinder is found evidently. The data of analysis provides theory basis for the MFPSE’s structural optimization, and is critical to improve the performance of MFPSE.

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Research of a Hybrid Diesel Locomotive Power Plant Based on a Free-Piston Engine

Communications - Scientific letters of the University of Zilina ◽

10.26552/com.c.2020.3.103-109 ◽

2020 ◽

Vol 22 (3) ◽

pp. 103-109

Author(s):

Serhiy Buriakovskyi ◽

Borys Liubarskyi ◽

Artem Maslii ◽

Danylo Pomazan ◽

Tatyana Tavrina

Keyword(s):

Internal Combustion Engine ◽

Combustion Engine ◽

Internal Combustion ◽

Diesel Generator ◽

Piston Engine ◽

Diesel Locomotive ◽

Free Piston ◽

Electric Transmission ◽

Free Piston Engine ◽

Hybrid Transmission

This article describes one of the possible ways for improving the energy efficiency of shunting diesel locomotives. It means a replacing a traditional traction electric transmission with a diesel generator set with a hybrid transmission with a free-piston internal combustion engine and a linear generator. The absence of a crankshaft in an internal combustion engine makes it possible to reduce thermal and mechanical losses, which, in turn, leads to an increase in the efficiency of traction electric transmission of the diesel locomotive.

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The Working Principle of a Turbine “Case Study: GE Frame 9E Gas Turbine”

Journal of Engineering Research and Reports ◽

10.9734/jerr/2019/v9i117005 ◽

2019 ◽

pp. 1-20

Author(s):

Obolo Olupitan Emmanuel

Keyword(s):

Internal Combustion Engine ◽

Gas Turbine ◽

Combustion Engine ◽

Mechanical Energy ◽

Internal Combustion ◽

Reciprocating Motion ◽

Fuel Gas ◽

Spark Plug ◽

Working Principle

Gas Turbine is one of the machines that use the thermodynamic principle converting fuel energy to mechanical energy. It is an internal combustion engine. Also, designed to accelerate a stream of gas, which is used to produce a reactive thrust to propel an object or to produce mechanical power that turns a load. It functions in the same way as the internal combustion engine. It sucks in air from the atmosphere, and compress it. The fuel (gas) is injected and ignited (spark plug). The gases expand doing work and finally exhausts outside. Instead of reciprocating motion, the gas turbine uses a rotary motion throughout, and that is the only difference.

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Accuracy of identification of the state of the internal combustion engine with the customized model using the measuring expert system

Вычислительные технологии ◽

10.25743/ict.2021.26.6.005 ◽

2021 ◽

pp. 54-67

Author(s):

Иван Петрович Добролюбов ◽

Олег Федорович Савченко ◽

Виктор Валентинович Альт ◽

Олег Владимирович Ёлкин ◽

Денис Николаевич Клименко

Keyword(s):

Expert System ◽

Internal Combustion Engine ◽

Computer Model ◽

Gradient Method ◽

Combustion Engine ◽

Internal Combustion ◽

Technical Condition ◽

The State ◽

Actual State ◽

Operational Conditions

Рассмотрены вопросы уменьшения погрешности идентификации технического состояния двигателя внутреннего сгорания и его составных частей как объекта экспертизы путем настраивания параметров применяемой в измерительной экспертной системе виртуальной модели ДВС. Для настройки модели предложено применение градиентного метода, обеспечивающего наиболее быструю минимизацию погрешности идентификации Purpose and methods. Improving the accuracy of identification for the technical condition of the internal combustion engine (ICE) in operational conditions using the engine measurement expert system (EMSE) is addressed by adjusting the computer dynamic model of the internal combustion engine. Results. Algorithmic schemes of computer models for the state of the ICE are obtained using the equations of its dynamics, which takes into account the factors such as the movement of the fuel supply body, the force on the hook - the load. The structural schemes of modeling at the input of a step-by-step action are presented. A promising method of tuning the model in the EMSE is proposed, which consists of measuring its working processes, in particular the angular acceleration of the crankshaft, for a specific brand of ICE. Then the corresponding set of models of its technical condition is obtained: normal, permissible, limit, pre-accident and emergency. By adjusting the values of the coefficients of these models in the EMSE, they achieve their coincidence with the actual state of the ICE. The identification error is minimized using the gradient method of steepest descent. The presence of several computer models is a practical advantage in the examination of the technical condition of the tested engines allowing its effective implementation in operational conditions. In this case, based on the experience of operation, the computer model closest to the actual state of the ICE is adjusted. At the same time, the efficiency of localization of ICE malfunctions increases, since the coefficients reflecting the state of the engine components and systems are consistently adjusted. Conclusions. The application of the proposed methodology using the criterion of minimizing the identification error by the gradient method allows implementation of this effective method for identifying the state of the ICE. It increases the reliability of determining the technical state of the ICE and its components by adjusting the computer model

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Comparative Parameters Evaluation of Internal Combustion Engines Naturally Aspired and Supercharged With Hybrid Turbocharger

10.21203/rs.3.rs-32684/v1 ◽

2020 ◽

Author(s):

Chiriac Rares ◽

Anghel Chiru

Keyword(s):

Internal Combustion Engine ◽

Internal Combustion Engines ◽

Combustion Engine ◽

Internal Combustion ◽

Energy Performance ◽

Operating Efficiency ◽

Combustion Engines ◽

Exhaust Gases ◽

Electric Generator ◽

Technical Solutions

Abstract Internal combustion engines have an operating efficiency that can be exploited to increase their performance. Some of the waste gases can be recovered through technical solutions such as turbocharging. The turbocharging solution is one of the most popular technical solutions for increasing the energy performance of internal combustion engines. This requires an analysis of the energy balance of the internal combustion engine. This shows that there is a significant reserve of energy in the exhaust gases, which can be used to increase the engine efficiency. One solution is to use this energy to drive a turbine coupled with an electric generator. This article aims to present the result of the experimental research of the hybrid turbocharger, simulating and validating the new solutions for increasing the energy performance of internal combustion engines through hybrid turbochargers using a coupled electric generator. The simulations will be performed using AMESim software developed by Siemens to demonstrate through calculations the efficiency of new solutions, such as a hybrid turbocharger. The tests will be performed using an diesel internal combustion engine with a cylinder capacity of 1.9 liters which is also simulated with AMESim software. The residual exhaust gases of the internal combustion engine will drive the hybrid turbocharger turbine and generate electricity. Electricity can then be used for storage in the car battery or for consumption by the car's electrical system. The article also includes a comparative study between the power and torque of the naturally aspirated internal combustion engine equipped with a hybrid turbocharger.

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Efficiency Improvement of Electric Generating Engine System Based on Internal Combustion Engine: Energy Simulation of New Engine Operation with Electric Generator and Motor

Journal of Robotics and Mechatronics ◽

10.20965/jrm.2012.p0487 ◽

2012 ◽

Vol 24 (3) ◽

pp. 487-497 ◽

Cited By ~ 3

Author(s):

Hiroki Ishikawa ◽

◽

Yuta Takeda ◽

Satoshi Ashizawa ◽

Takeo Oomichi

Keyword(s):

Internal Combustion Engine ◽

Combustion Engine ◽

Internal Combustion ◽

Energy Simulation ◽

Efficiency Improvement ◽

Piston Motion ◽

Engine Operation ◽

Electric Generator ◽

Consumption Energy ◽

Crank Mechanism

An internal combustion engine with a crank mechanism moves with its piston and load mechanism interlocked, and this poses a problem for efficiency improvement. We therefore built a system in which the piston and load mechanism linearly; a generator is used in the combustion stroke and a motor is used in the exhaust, intake, and compression strokes. This system can control piston motion freely, so generation energy and consumption energy in each stroke can be optimized. To check its effectiveness, we developed a simulator in which an engine mechanism and motor/generator is integrated, we performed an energy simulation, and we verified the effectiveness of the method of operation of the proposed system.

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