scholarly journals Loading capacity of ball bending clutch with straight slots

2021 ◽  
pp. 124
Author(s):  
Vladimir Malachschenko ◽  
Olexsandr Orel ◽  
Vоlodimir Fedik
Keyword(s):  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Manufacturing Technology ◽  
Loading Capacity ◽  
Combustion Engines ◽  
Maximum Torque ◽  
Force Interaction ◽  
Research Results

Based on previous research results, a more advanced design of ball coupling of freewheel (BCFH) of axial action for starters of internal combustion engines is developed, force interaction and maximum torque for the case when the grooves of one half-clutch are straight, which simplifies manufacturing technology. Calculation schemes for different positions of the main elements are offered, loading of all working surfaces of the new coupling taking into account friction of balls with lateral surfaces of grooves is established.  

Removing carbon deposits from parts of the combustion chamber of diesel engines

2021 ◽  
pp. 136-144
Author(s):  
Keyword(s):  
Combustion Chamber ◽  
Diesel Engines ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Coke Deposition ◽  
Combustion Engines ◽  
Maximum Torque ◽  
Carbon Deposits ◽  
Before And After ◽  
Land Rover

The Leader4M apparatus for removing carbon deposition with the help of hydrogenair mixture in internal combustion engines was developed. The efficiency of this apparatus when cleaning the engine parts from carbonand coke deposition was proved. Power indicators of diesel engines of BMW X1 2.0 td and Land Rover Discovery 3.0 td were measured before and after cleaning the combustion chamber parts of these engines using the Leader4M installation. After cleaning the parts of these engines from carbon deposits using the Leader4M unit, the maximum power of the engines increased by 2.0–2.1 %, and the maximum torque of these engines increased by 0.2–1.8 %. Keywords internal combustion engines; diesel engine; diesel fuel; carbon formation; hydrogenair mixture

scholarly journals Experimental Research of the Coagulation Process of Exhaust Gases under the Influence of Ultrasound

2021 ◽  
Vol 23 (4) ◽  
pp. B288-B298
Author(s):  
Adil S. Kadyrov ◽  
Bauyrzhan K. Sarsembekov ◽  
Aleksandr A. Ganyukov ◽  
Zhanara Z. Zhunusbekova ◽  
Kuanysh N. Alikarimov
Keyword(s):  
Experimental Research ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Solid Particles ◽  
Combustion Engines ◽  
Ultrasonic Radiation ◽  
Research Results ◽  
Ultrasonic Cleaning ◽  
Exhaust Gases ◽  
Experimental Stand

The authors propose the use of ultrasonic radiation to clean the exhaust gases of internal combustion engines of the solid particles. An experimental stand and research results are presented, proving the possibility and efficiency of using the process of ultrasonic cleaning of exhaust gases due to the process of the solid particles coagulation. The authors received a corresponding patent, the efficiency of which has been proven by results of the conducted research.

scholarly journals A Comprehensive Overview of Hydrogen-Fueled Internal Combustion Engines: Achievements and Future Challenges

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6504
Author(s):  
Zbigniew Stępień
Keyword(s):  
Internal Combustion Engines ◽  
Fuel Injection ◽  
Internal Combustion ◽  
Hydrogen Combustion ◽  
Nox Emissions ◽  
Combustion Engines ◽  
Research Centers ◽  
Research Results ◽  
Challenges And Opportunities ◽  
Future Challenges

This paper provides a comprehensive review and critical analysis of the latest research results in addition to an overview of the future challenges and opportunities regarding the use of hydrogen to power internal combustion engines (ICEs). The experiences and opinions of various international research centers on the technical possibilities of using hydrogen as a fuel in ICE are summarized. The advantages and disadvantages of the use of hydrogen as a solution are described. Attention is drawn to the specific physical, chemical, and operational properties of hydrogen for ICEs. A critical review of hydrogen combustion concepts is provided, drawing on previous research results and experiences described in a number of research papers. Much space is devoted to discussing the challenges and opportunities associated with port and direct hydrogen injection technology. A comparison of different fuel injection and ignition strategies and the benefits of using the synergies of selected solutions are presented. Pointing to the previous experiences of various research centers, the hazards related to incorrect hydrogen combustion, such as early pre-ignition, late pre-ignition, knocking combustion, and backfire, are described. Attention is focused on the fundamental importance of air ratio optimization from the point of view of combustion quality, NOx emissions, engine efficiency, and performance. Exhaust gas scrubbing to meet future emission regulations for hydrogen powered internal combustion engines is another issue that is considered. The article also discusses the modifications required to adapt existing engines to run on hydrogen. Referring to still-unsolved problems, the reliability challenges faced by fuel injection systems, in particular, are presented. An analysis of more than 150 articles shows that hydrogen is a suitable alternative fuel for spark-ignition engines. It will significantly improve their performance and greatly reduce emissions to a fraction of their current level. However, its use also has some drawbacks, the most significant of which are its high NOx emissions and low power output, and problems in terms of the durability and reliability of hydrogen-fueled engines.

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