THE ANALYSIS OF ENVIRONMENTAL SAFETY STANDARDS OF MOTOR VEHICLES

Author(s):  
Просянкин ◽  
S. Prosyankin ◽  
Красникова ◽  
D. Krasnikova ◽  
Феклин ◽  
...  

The article describes the standards of environmental safety of motor vehicles ´Euro´, alternative fuels, prospects of development of automobile industry in the coming years. In addition, the author acquaints the reader with the upcoming changes in the design of internal combustion engines.

2020 ◽  
Vol 91 (4) ◽  
pp. 49-58
Author(s):  
I. V. Bryhadyr ◽  
I. V. Panova

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.


2019 ◽  
Vol 141 (7) ◽  
Author(s):  
Herry Lesmana ◽  
Zhezi Zhang ◽  
Xianming Li ◽  
Mingming Zhu ◽  
Wenqiang Xu ◽  
...  

Ammonia (NH3) is an excellent hydrogen (H2) carrier that is easy to bulk manufacture, handle, transport, and use. NH3 is itself combustible and could potentially become a clean transport fuel for direct use in internal combustion engines (ICEs). This technical review examines the current state of knowledge of NH3 as a fuel in ICEs on its own or in mixtures with other fuels. A particular case of interest is to partially dissociate NH3 in situ to produce an NH3/H2 mixture before injection into the engine cylinders. A key element of the present innovation, the presence of H2 is expected to allow easy control and enhanced performance of NH3 combustion. The key thermochemical properties of NH3 are collected and compared to those of conventional and alternative fuels. The basic combustion characteristics and properties of NH3 and its mixtures with H2 are summarized, providing a theoretical basis for evaluating NH3 combustion in ICEs. The combustion chemistry and kinetics of NH3 combustion and mechanisms of NOx formation and destruction are also discussed. The potential applications of NH3 in conventional ICEs and advanced homogenous charge compression ignition (HCCI) engines are analyzed.


2015 ◽  
Vol 787 ◽  
pp. 687-691
Author(s):  
Tarigonda Hari Prasad ◽  
R. Meenakshi Reddy ◽  
P. Mallikarjuna Rao

Fossil fuels are exhausting quickly because of incremental utilization rate due to increase population and essential comforts on par with civilization. In this connection, the conventional fuels especially petrol and diesel for internal combustion engines, are getting exhausted at an alarming rate. In order to plan for survival of technology in future it is necessary to plan for alternate fuels. Further, these fossil fuels cause serious environmental problems as they release toxic gases into the atmosphere at high temperatures and concentrations. The predicted global energy consumption is increasing at faster rate. In view of this and many other related issues, these fuels will have to be replaced completely or partially by less harmful alternative, eco-friendly and renewable source fuels for the internal combustion engines. Hence, throughout the world, lot of research work is in progress pertaining to suitability and feasibility of alternative fuels. Biodiesel is one of the promising sources of energy to mitigate both the serious problems of the society viz., depletion of fossil fuels and environmental pollution. In the present work, experiments are carried out on a Single cylinder diesel engine which is commonly used in agricultural sector. Experiments are conducted by fuelling the diesel engine with bio-diesel with LPG through inlet manifold. The engine is properly modified to operate under dual fuel operation using LPG through inlet manifold as fuel along FME as ignition source. The brake thermal efficiency of FME with LPG (2LPM) blend is increased at an average of 5% when compared to the pure diesel fuel. HC emissions of FME with LPG (2LPM) blend are reduced by about at an average of 21% when compared to the pure diesel fuel. CO emissions of FME with LPG (2LPM) blends are reduced at an average of 33.6% when compared to the pure diesel fuel. NOx emissions of FME with LPG (2LPM) blend are reduced at an average of 4.4% when compared to the pure diesel fuel. Smoke opacity of FME with LPG (2LPM) blend is reduced at an average of 10% when compared to the pure diesel fuel.


Author(s):  
A. A. Kondratiuk ◽  

The paper presents the results of theoretical and experimental studies of the environmental characteristics of internal combustion engines of commercial and municipal vehicles operating on the Diesel cycle using a hydrogen additive. The analysis of literature sources has confirmed that there are different data regarding harmful emissions when using hydrogen additives for internal combustion engines running on the Diesel cycle. Therewith, data on harmful emissions of nitrogen oxides NOx differ significantly. The results of theoretical and experimental studies of the environmental characteristics of internal combustion engines of commercial and municipal vehicles operating on a Diesel cycle using a hydrogen additive, allow to assert the adequacy of the model, since the error between the theoretical and experimental data did not exceed 14,5 %. It has been found out that the concentration of NOx emissions in an internal combustion engine using a hydrogen additive, working on a Diesel cycle, has decreased by 52 %.The research results confirm the prospects of using a hydrogen additive, which is done for the first time for internal combustion engines running on the Diesel cycle in commercial and municipal vehicles. This guarantees increased environmental safety in urban agglomerations.


2019 ◽  
Vol 4 (8) ◽  
pp. 80-84
Author(s):  
Van Quy Nguyen ◽  
Huu Cuong Le

To cope with the depletion of fossil fuels and the threat of exhaust pollution from internal combustion engines, research finds alternative fuels. Step by step to completely replace fossil fuels that will be exhausted in the future and environmentally friendly due to internal combustion engines is an urgent and important issue. Diversify fuel sources used for internal combustion engines and environmentally friendly when using Jatropha - Diesel fuel mixture. The paper focuses on studying the ability to use biodiesel derived from Jatropha seeds with the volume ratios of 5%, 10% and 15% on experimental engines. Thereby, it will analyze and evaluate the technical features and pollution levels of engines compared to pure fuels. Experimental study assessing the effect of Jatropha - Diesel mixing ratio on the emission formation compared with emissions in Vikyno EV2600 engines.


Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4086 ◽  
Author(s):  
Jorge Martins ◽  
F. P. Brito

The recent transport electrification trend is pushing governments to limit the future use of Internal Combustion Engines (ICEs). However, the rationale for this strong limitation is frequently not sufficiently addressed or justified. The problem does not seem to lie within the engines nor with the combustion by themselves but seemingly, rather with the rise in greenhouse gases (GHG), namely CO2, rejected to the atmosphere. However, it is frequent that the distinction between fossil CO2 and renewable CO2 production is not made, or even between CO2 emissions and pollutant emissions. The present revision paper discusses and introduces different alternative fuels that can be burned in IC Engines and would eliminate, or substantially reduce the emission of fossil CO2 into the atmosphere. These may be non-carbon fuels such as hydrogen or ammonia, or biofuels such as alcohols, ethers or esters, including synthetic fuels. There are also other types of fuels that may be used, such as those based on turpentine or even glycerin which could maintain ICEs as a valuable option for transportation.


2017 ◽  
Vol 4 (3) ◽  
pp. 20-29 ◽  
Author(s):  
N.V.Mahesh Babu Talupula ◽  
◽  
P.Srinivasa Rao ◽  
B.Sudheer Prem Kumar ◽  
Ch.P raveen

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