scholarly journals Review of Modern Vehicle Powertrains and Their Modelling and Simulation in MATLAB/Simulink

2020 ◽  
Vol 5 (2) ◽  
pp. 232-250
Author(s):  
Attila Szántó ◽  
Gusztáv Áron Szíki
Keyword(s):  
High Performance ◽  
Internal Combustion Engines ◽  
Road Transport ◽  
Combustion Engines ◽  
Environmental Standards ◽  
Matlab Simulink ◽  
Technological Advances ◽  
Usage Patterns ◽  
Drive Systems ◽  
Dynamics Simulations

Thanks to technological advances and environmental standards, as well as changing usage patterns, road vehicles are constantly developing. Electric and hybrid vehicles are playing an increasingly important role in today’s road transport. The most significant changes are probably in the powertrain of vehicles. The efficiency of internal combustion engines increases while their emissions continue to decline. In addition, high performance electric motors, batteries and even fuel cells play an increasingly important role in hybrid and electric vehicles. In this publication, we review the drive systems of current modern vehicles and the types and characteristics of their major components. We also review the available models and computer programs for their simulation, focusing mainly on MATLAB/Simulink applications. Based on this, we can develop our own models and simulation programs which will help us to perform different driving dynamics simulations and to compare the performance, dynamic and energetic characteristics of these powertrains and their components to each other.

A Novel Electromechanical Solution for Cam-Switching in High Performance Internal Combustion Engines

2020 ◽  
Vol 142 (7) ◽  
Author(s):  
Andrea De Martin ◽  
Giovanni Jacazio ◽  
Massimo Sorli
Keyword(s):  
High Performance ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Operating Conditions ◽  
Valve Lift ◽  
Combustion Engines ◽  
Critical Aspect ◽  
Conceptual Design Phase ◽  
Common Strategy ◽  
Switch System

Abstract The variation of the valve lift is a fairly common strategy currently adopted in several in-service internal combustion engines to optimize their performance depending on the operating conditions of the vehicle. The most critical aspect to consider during the conceptual design phase of a cam switch system is the extremely narrow window of opportunity to perform the cam change, which duration is defined by the time during which the corresponding valve lift is null. To meet this requirement and ensure safe, repeatable movements, a novel architecture based on the combination of a new electromechanical actuator and its dedicated control system is presented. The architecture is at first introduced with reference to the numerous examples available in the literature, and hence mathematically described. The dynamic model of the system derived from the presented equation is then used to study the performance of the presented solution and define its control strategy. Results are finally presented and discussed.

scholarly journals The concept of a new refrigerant in combustion engines in aspect of the requirements of modern drive systems

2019 ◽  
Vol 177 (2) ◽  
pp. 46-49
Author(s):  
Mateusz SZRAMOWIAT
Keyword(s):  
Heat Exchange ◽  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Cooling System ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Cooling Systems ◽  
Drive Systems

The article presents currently applied construction solutions for currently used cooling systems for internal combustion engines. There were presented their defects and possible development directions were indicated. On this basis the concept of a cooling system which will enable the improvement of heat exchange in the internal combustion engine has been proposed.

scholarly journals Why the Development of Internal Combustion Engines Is Still Necessary to Fight against Global Climate Change from the Perspective of Transportation

2019 ◽  
Vol 9 (21) ◽  
pp. 4597 ◽  
Author(s):  
José Ramón Serrano ◽  
Ricardo Novella ◽  
Pedro Piqueras
Keyword(s):  
Climate Change ◽  
Global Climate Change ◽  
Internal Combustion Engines ◽  
Global Climate ◽  
Internal Combustion ◽  
Road Transport ◽  
Combustion Engines ◽  
Propulsion Systems

Internal combustion engines (ICE) are the main propulsion systems in road transport [...]

E-Highway: A Future Transportation

2020 ◽  
Vol 3 (9) ◽  
pp. 56-58
Author(s):  
Vikash Singh Yadav ◽  
Jai Vashisth ◽  
R. S. Desai
Keyword(s):  
Air Pollution ◽  
Contact Line ◽  
Traffic Congestion ◽  
Internal Combustion Engines ◽  
Road Transport ◽  
Transport Sector ◽  
Combustion Engines ◽  
Purchasing Cost ◽  
Transportation Sector ◽  
Local Air Pollution

There is an increase demand in EV which will play a major role in future of road transport. While commercial Electric Vehicle existing today have their uptake has been limited due to limited battery range, lack of charging convenience and high purchasing cost. As cities expand and affluence rises, traffic congestion is becoming problematic. To respond to these core challenges facing the transportation sector, the E-highway is twice as efficient as internal combustion engines. The innovation includes transition from personal combustion powered vehicles towards grid-powered transportation. This innovation supplies trucks with power from overhead contact line. This reduces local air pollution and contributes significantly to the decarbonization of the transport sector.

scholarly journals Analysis of the possibilities of using of DME fuel in motor boat drive systems

2017 ◽  
Vol 171 (4) ◽  
pp. 74-80
Author(s):  
Jacek KROPIWNICKI ◽  
Przemysław DOMINICZAK ◽  
Zbigniew KNEBA ◽  
Sławomir MAKOWSKI ◽  
Janusz CIEŚLIŃSKI ◽  
...  
Keyword(s):  
Control Systems ◽  
Dimethyl Ether ◽  
Internal Combustion Engines ◽  
Combustion Engines ◽  
Toxic Compounds ◽  
Small Vessels ◽  
Reduce Emissions ◽  
Drive Systems ◽  
And Control ◽  
Gas Supply

The characteristics of alternative fuel for diesel: dimethyl ether (DME) and an analysis of the potential to reduce emissions of toxic compounds by the engines when running on this fuel have been presented in this work. Basic types of design solutions of gas supply and control systems, possible for use in internal combustion engines with DME supply have been also presented. The paper presents a study of the legislation and an analysis of the feasibility of the system storage and fueling DME on board small vessels.

scholarly journals Role of Legislation and State Policy in Minimizing the Impact of Threats to Environmental Safety in the Automobile Transport Sector

2020 ◽  
Vol 91 (4) ◽  
pp. 49-58
Author(s):  
I. V. Bryhadyr ◽  
I. V. Panova
Keyword(s):  
State Policy ◽  
Internal Combustion Engines ◽  
Negative Impact ◽  
Internal Combustion ◽  
Road Transport ◽  
Environmental Safety ◽  
Motor Vehicles ◽  
Combustion Engines ◽  
The Impact

The role of legislation and state policy in minimizing the impact of threats to environmental safety in the field of automobile transport has been studied. The main directions of the development of state policy and legislation in the field of reducing the negative impact of motor vehicles on the environment and public health have been defined. The main problems of reducing the negative impact of motor vehicles on the environment and public health, as well as the development of state and legal mechanisms to overcome them have been determined. The main environmental problems faced by governments are the use of internal combustion engines and fuel quality indicators. Many EU countries are refusing to further impose more strict requirements on the operation of motor fuel engines, instead introducing mechanisms to completely abandon such vehicle propulsion systems. However, such a refusal raises another problem of greening of road transport – the problem of electrification of transport, in the process of which it is necessary to solve the problems of transport energy and disposal of used batteries of electric vehicles. The authors have emphasized on inexpediency that to be limited in the long run only to mechanisms for setting more strict emission requirements for cars. The authors have indicated the need for a comprehensive approach to solving environmental problems to prevent the emergence of new significant difficulties – the accumulation of used batteries of electric cars, the depletion of non-renewable resources for their manufacture, etc. It has been offered to join Ukraine to the pan-European initiative of electrification of road transport, to develop the state program for the transformation of the motor transport industry with clear deadlines for the introduction of restrictions on the use of internal combustion engines, to introduce mechanisms to financially stimulate the transition from internal combustion engines to electric combustion engines.

IMPROVING THE ACCURACY OF DETERMINING THE FREQUENCY

2021 ◽  
Vol 73 (2) ◽  
pp. 23-31
Author(s):  
L.O. SAVIN ◽  
Keyword(s):  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Road Transport ◽  
Technical Condition ◽  
Operating Conditions ◽  
Combustion Engines ◽  
Optimal Frequency ◽  
Average Operating

The paper substantiates a method for increasing the accuracy of determining the optimal fre-quency of maintenance of one of the most important units of automotive equipment operating in various climatic and road transport conditions - its engines, and also presents circuit proposals for the implementation of this method. The proposed approach makes it possible to significantly increase the accuracy of determining the optimal frequency of maintenance of internal combustion engines by taking into account their real technical condition when operating in different (different from the average) operating conditions. The article provides typical examples of calculating the determination of the optimal frequency of maintenance of automotive equipment, and also estimates the gain achieved when using the approach proposed in the work.

APPLICATION OF HYDROGEN TECHNOLOGIES TO ENSURE EUROPEAN STANDARDS IN THE OPERATION OF MOTOR TRANSPORT

2018 ◽  
Author(s):  
Vasyl Kozyk ◽  
◽  
Oleksandra Mrykhina ◽  
Taras Danylovych ◽  
Iryna Stetsiv ◽  
...  
Keyword(s):  
Internal Combustion Engines ◽  
Negative Impact ◽  
Internal Combustion ◽  
Road Transport ◽  
Hydrogen Purification ◽  
Combustion Engines ◽  
Technical Parameters ◽  
Motor Transport ◽  
Hydrogen Technologies ◽  
European Standards

It has been established that emissions and wastes from the operation of motor transport are one of the most common sources of air pollution and ecological imbalance. Despite the significant number of documents on the greening of motor transport in Europe and the world, the need to reduce the negative impact of cars remains open. A possible solution to this problem is the use of hydrogen as a fuel and as a cleaner for internal combustion engines. The expediency and efficiency of the application of hydrogen technologies to reduce emissions of carbon dioxide, soot and other compounds by internal combustion engines of road transport are substantiated. The possibility of application of hydrogen technologies for domestic motor transport to ensure European standards of its operation is determined. The experience of developing an innovative system of hydrogen purification of internal combustion engines with a long period of operation, proposed by the specialists of the Science Park of the Lviv Polytechnic National University "SID Sity" (Lviv) is analyzed. The proposed development provides improved technical parameters and is cheaper to operate compared to foreign counterparts. The proposed hydrogen purification system can meet European standards of environmental requirements.

A study of heat flux in a constant-volume combustion chamber

2003 ◽  
Vol 217 (9) ◽  
pp. 825-832 ◽  
Author(s):  
Chi-Woo Lee ◽  
Chi-Won Kim ◽  
Si-Pom Kim
Keyword(s):  
Heat Flux ◽  
Combustion Chamber ◽  
High Performance ◽  
Internal Combustion Engines ◽  
Constant Volume ◽  
Cylinder Wall ◽  
Combustion Engines ◽  
Constant Volume Combustion ◽  
Constant Volume Combustion Chamber ◽  
Instantaneous Temperature

In the production of internal combustion engines, there has been a move towards the development of high-performance engines with fuel economy, lighter weights and smaller sizes. These trends help to answer problems related to thermal load and abnormal combustion, etc., in these engines. In order to clarify these problems, a thin film-type probe for instantaneous measurement of surface temperatures has been suggested. A method for manufacturing such a probe was established in this study. The instantaneous surface temperature of a constant-volume combustion chamber was measured by this probe, and heat flux was calculated and analysed with a Fourier series. For a thorough understanding of the characteristics of combustion, the authors measured the wall temperature of the combustion chamber and computed heat flux through a cylinder wall while varying the protrusion height of the probe. To achieve the above goals, an instantaneous temperature probe was developed, thereby making possible the analysis of the instantaneous temperature of the wall surface and unsteady heat flux in the constant-volume combustion chamber.

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