scholarly journals An internal combustion engine without a crankshaft. Perspectives.

2020 ◽  
Vol 183 (4) ◽  
pp. 39-44
Author(s):  
Serguei Tikhonenkov

The article examines the level of perfection of the modern internal combustion engine design, their impact on the environment and population. A new engine concept has been developed. As a result, a decrease in fuel consumption by 80% has been discovered as well approaches to solve this task. A comparison of the proposed and traditional engine is presented. The effects of the new engine in the field of ecology such as a decrease in the number of diseases caused by poor environmental conditions, a lower risk of global warming, lower health care costs, an increase in life expectancy, the cheap electricity for industries and householders etc.

2021 ◽  
pp. 3-6
Author(s):  

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]


2021 ◽  
Vol 2070 (1) ◽  
pp. 012203
Author(s):  
Jeffin Francis ◽  
Aby Biju Narayamparambil ◽  
Anupama Johnson ◽  
Jeswant Mathew ◽  
Vishnu Sankar ◽  
...  

Abstract Climate change, Green House Gases (GHG) and global warming are well-known terms in the world today. Global research efforts are focused towards increasing efficiency and reducing GHG emissions from various emitters to deal with climate change. Since the transportation sector accounts for a large share of global GHG emissions it is justifiable that curbing global warming should transpire in this sector. Worldwide there are large number of research taking place in the electrification of transportation sector and autonomous vehicles. In the footsteps of this global trend towards electrification, autonomous driving and automation of the transportation sector, a research to convert an existing internal combustion engine car to an electric car and implementation of few features found in SAE level 1 autonomous vehicles are explored through this project. These features include controlling vehicles remotely, collision detection, parking assistance, etc.


2021 ◽  
Vol 22 (2) ◽  
pp. 196-204
Author(s):  
Sergei V. Smirnov ◽  
Alexander R. Makarov ◽  
Ivan A. Zaev ◽  
Gulnara T. Khudaibergenova

The article is devoted to the study of the possibilities of improving the technical and economic indicators of an internal combustion engine (ICE) through the use of the Miller cycle with a shortened intake. A review of scientific works on the use of the Atkinson cycle and Miller cycle in an internal combustion engine is carried out. A comparative analysis of theoretical cycles: Otto cycle, Atkinson cycle and Miller cycle is carried out. Calculated studies of the influence of the expansion ratio and the pressure increase ratio on the efficiency of the Atkinson cycle have been carried out. The ratios are presented that allow using the Miller cycle with a short inlet to obtain the same theoretical efficiency of the cycle as that of the Atkinson cycle. At the same time, the implementation of the Miller cycle in a real engine design significantly exceeds the possibilities of using the Atkinson cycle. The results of the study showed that the use of the Miller cycle with a shortened intake is preferable, but it must necessarily increase the compression ratio and intake pressure through the use of boost. On the example of real data of the main parameters of the cycle, it is shown that the use of the theoretical Miller cycle can provide a significant up to 12.2% increase in the efficiency of the cycle compared to the Otto cycle. The ratios, conditions and recommendations are presented that allow the effective use of the Miller cycle with a shortened intake in a real engine design.


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