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Evaluation of Power Indicators of the Automobile Engine
(Science Publishing Corporation, 2018) Dhahad, Hayder Abed; Alawee, Wissam Hameed; Marchenko, A. P.; Klets, D.; Akimov, O.
A method for estimating the power characteristics of the car engine in various driving regimes is proposed. It is determined that the vol-ume of the free power (engine power reserve) allows the driver to implement the turning parameters and the time of its completion, which are set by the steering parameters, position and the speed of the steering wheels rotation. The engine power reserve is necessary to provide the required maneuverability indicators. The engine power during maneuvering is spent on overcoming the resistance to move-ment and on providing the impact controlled by the maneuver. The first component of the engine power can be called connected, and the second one can be called the free one or a controlled component. The received analytical expressions allow carrying out at the design stage a rational choice of capacity of the engine by the condition of maintenance of demanded properties of maneuverability. The developed method for constructing the refined acceleration characteristics of the engine makes it possible to determine the dynamic capabili-ties of the car, taking into account its design features and operating conditions.
Experimental Tests of Discrete Strengthened Elements of Machine-Building Structures
(2020) Marchenko, A. P.; Tkachuk, M. A.; Kravchenko, S.; Tkachuk, M. M.; Parsadanov, I. V.
Computer simulation and bench tests of components and full-scale structures of internal combustion engine are performed in order to evaluate discrete and continual strengthening technology. The contact pressure distributions, friction coefficients, wear, roughness and hardness of the contacting surfaces of the tested machine parts were determined. The numerical characteristics that determine the effectiveness of such combined strengthening method are established. Conceptual fundamentals of discrete continual strengthening have been developed. Positive effects in the “load – contact – friction – wear” chain were found due to the proposed strengthening method. The positive effect of the coordination of micro and macroscale processes and states of loaded parts, which are strengthened by the discrete and continuous method, is also established. It is confirmed that the entire set of tribo-mechanical characteristics is improved with such strengthening, in contrast to traditional methods, an application of which results in improvement in some characteristics at the cost of the others.
Ways of using waste energy from i. c. engines exhast gases
(НТУ "ХПИ", 2015) Marchenko, A. P.; Samoilenko, D.; Hamzah, A. A.; Hamzah, O. A.
In present study the power conversion methods was investigated which could be applied as a bottoming cycle in combination with the WHR systems of diesel and gas engines to produce additional electrical power from the excess heat. It has been identified that there are large potentials of energy savings through the use of waste heat recovery technologies. Waste heat recovery defines capturing and reusing the waste heat from internal combustion engine for heating, generating mechanical or electrical work and refrigeration system.
Waste heat recovery systems for internal combustion engines: classification and benefits
(НТУ "ХПИ", 2014) Marchenko, A. P.; Samoilenko, D.; Adel Hamzah, Ali; Adel Hamzah, Omar
Recent trend about the best ways of using the deployable sources of energy in to useful work in order to reduce the rate of consumption of fossil fuel as well as pollution. Out of all the available sources, the internal combustion engines are the major consumer of fossil fuel around the globe. The remaining heat is expelled to the environment through exhaust gases and engine cooling systems, resulting in to entropy rise and serious environmental pollution, so it is required to utilized waste heat into useful work. The recovery and utilization of waste heat not only conserves fuel, usually fossil fuel but also reduces the amount of waste heat and greenhouse gases damped to environment. It is imperative that serious and concrete effort should be launched for conserving this energy through exhaust heat recovery techniques. Such a waste heat recovery would ultimately reduce the overall energy requirement and also the impact on global warming.
The problems of utilization of flare gases in internal combustion engines
(НТУ "ХПИ", 2013) Marchenko, A. P.; Samoilenko, D. E.; Hamzah, Omar Adel
The problem of flare gases utilization in internal combustion engines is considered. Flaring associated gas from oil drilling sites is the most promising fuel for such purpose. Also the problems of detonation arising during the operation of internal combustion engines on flare gases are also studied. It is shown that the only independent parameter that affects the occurrence of detonation during operation of a gas engine is methane number which is a physical characteristic of the gas. The new conception of the internal combustion engine with on-board steam reformer to avoid the problem of detonation is offered in present study.
Simulation of Biofuels Combustion in Diesel Engines
(2012) Marchenko, A. P.; Osetrov, Alexandr; Linkov, Oleg; Samoilenko, Dmitry

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