Development Strategy of Gas Engines in China

2012 ◽  
Vol 516-517 ◽  
pp. 593-597
Author(s):  
Li Yan Feng ◽  
Jun Zhai ◽  
Chuang Qu
Keyword(s):  
Development Strategy ◽  
Internal Combustion Engines ◽  
Ghg Emissions ◽  
Combustion Engines ◽  
Fuel System ◽  
Combustion System ◽  
Green House Gas ◽  
Harmful Emissions ◽  
Key Technologies ◽  
Gas Fuel

Based on the analysis of the gas fuel resources, the development potential of gas engines in China is evaluated. And contribution of application of gas engines on the reduction of Green House Gas (GHG) emissions as well as harmful emissions is estimated. Since gas engines are different from conventional internal combustion engines on fuel system and combustion system, the key technologies relating to developing gas engines are introduced, and the major difficulties of popularizing of gas engines are discussed. With the foundation of the analysis, development strategy of gas engines is proposed.

scholarly journals Prospects for using hydrogen additive for internal combustion engines running on the Diesel cycle

2020 ◽  
Vol 17 (3) ◽  
pp. 183-190
Author(s):  
A. A. Kondratiuk ◽  
Keyword(s):  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Experimental Studies ◽  
Internal Combustion ◽  
Environmental Safety ◽  
Combustion Engines ◽  
Environmental Characteristics ◽  
Harmful Emissions ◽  
Diesel Cycle ◽  
Hydrogen Additive

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.

scholarly journals Analysis and classification of physical and chemical methods of fuel activation

2015 ◽  
Vol 26 (2) ◽  
pp. 67-73
Author(s):  
Viktoriya Fedorchak ◽  
Taras Fedorchak
Keyword(s):  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Fuel System ◽  
Chemical Methods ◽  
Pros And Cons ◽  
Optimal Approach ◽  
Physical And Chemical ◽  
Research Studies

Abstract The offered article explores various research studies, developed patents in terms of physical and chemical approaches to the activation of fuel. In this regard, national and foreign researches in the field of fuels activators with different principles of action were analysed, evaluating their pros and cons. The article also intends to classify these methods and compare them regarding diverse desired results and types of fuels used. In terms of physical and chemical influences on fuels and the necessity of making constructive changes in the fuel system of internal combustion engines, an optimal approach was outlined.

scholarly journals A Review on Liquefied Natural Gas as Fuels for Dual Fuel Engines: Opportunities, Challenges and Responses

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 6127
Author(s):  
Md Arman Arefin ◽  
Md Nurun Nabi ◽  
Md Washim Akram ◽  
Mohammad Towhidul Islam ◽  
Md Wahid Chowdhury
Keyword(s):  
Natural Gas ◽  
Internal Combustion Engines ◽  
Ghg Emissions ◽  
Liquefied Natural Gas ◽  
Future Research ◽  
Dual Fuel ◽  
Combustion Engines ◽  
Emission Regulations ◽  
Dual Fuel Engines ◽  
Sustainable Fuels

Climate change and severe emission regulations in many countries demand fuel and engine researchers to explore sustainable fuels for internal combustion engines. Natural gas could be a source of sustainable fuels, which can be produced from renewable sources. This article presents a complete overview of the liquefied natural gas (LNG) as a potential fuel for diesel engines. An interesting finding from this review is that engine modification and proper utilization of LNG significantly improve system efficiency and reduce greenhouse gas (GHG) emissions, which is extremely helpful to sustainable development. Moreover, some major recent researches are also analyzed to find out drawbacks, advancement and future research potential of the technology. One of the major challenges of LNG is its higher flammability that causes different fatal hazards and when using in dual-fuel engine causes knock. Though researchers have been successful to find out some ways to overcome some challenges, further research is necessary to reduce the hazards and make the fuel more effective and environment-friendly when using as a fuel for a diesel engine.

scholarly journals SUBSTANTIATION OF PARAMETERS FOR REDUCING THE TOXICITY OF EXHAUST GASES OF THE DIESEL ENGINE

2020 ◽  
pp. 44-57
Author(s):  
Yuriy Paladiychuk ◽  
Inna Telyatnuk
Keyword(s):  
Internal Combustion Engines ◽  
Particulate Filter ◽  
Combustion Engines ◽  
Exhaust Gases ◽  
Gasoline Engines ◽  
Advantages And Disadvantages ◽  
Industrial Enterprises ◽  
Harmful Emissions ◽  
Harmful Substances

Annual emissions of more than 6 million tons of pollutants and carbon dioxide into Ukraine. Mostly polluting industrial enterprises. However, with the increase in the number of cars on the roads, the number of harmful emissions into the atmosphere has increased. Over the past few years, the amount of exhaust gas entering the air in major cities has increased by 50-70%. More than half of the pollutants are emitted by private cars: in 2019, 1.7 million tonnes of harmful substances fell on them, while the total amount of all car emissions was 2.3 million tonnes. This article highlights the problem of environmental pollution by the exhaust gases of diesel internal combustion engines. Ways to improve environmental performance are presented. The composition of the exhaust gases and their effects on the environment are analyzed. The standards of Euro - 1 Euro - 6, on the reduction of harmful substances in diesel fuel are considered. The modern environmental standards of Stage and Tier and the regulation of smoke by standards are given. A formula for the determination of harmful substances in the exhaust gases of cars and a formula for the determination of the smoke of gases are proposed. The ways of neutralizing the toxicity of the exhaust gases with the help of neutralizers and the reduction of soot by means of the diesel particulate filter are considered. Common Rail DRNR systems, EGR and Selective Neutralization (SCR) systems using Adblu reagent, its advantages and disadvantages are described. The comparative characteristics of EGR and SCR systems are presented. Gasoline engines are not considered in this article.

scholarly journals Overall focus on research, including – Fusion of measurement and numerical analysis using weak flame phenomenon in micro combustion system

Impact ◽  
2020 ◽  
Vol 2020 (4) ◽  
pp. 62-64
Author(s):  
Kaoru Maruta ◽  
Hisashi Nakamura ◽  
Youhi Morii ◽  
Takuya Tezuka
Keyword(s):  
Internal Combustion Engines ◽  
High Fidelity ◽  
Combustion Engines ◽  
Combustion System ◽  
Chemical Reaction Kinetics ◽  
Complex Chemical ◽  
Flame Dynamics ◽  
Wide Range ◽  
Complex Chemical Reactions ◽  
Combustion Processes

To achieve highly efficient internal combustion engines, it is essential that the fuel and air mixtures in cylinder burn rapidly without making undesired 'knocking' phenomena. Fuel reactions should be fast enough for attaining sufficiently fast exothermic combustion for power output but simultaneously, it should be durable to the undesired knocking, he notes. It is essential to clarify both ignition-related fuel reactivity and combustion processes that are governed by flame dynamics under intense turbulence. Obtained knowledge should be used for designing combustion phenomena. Dr Karou Maruta from the Institute of Fluid Science at Tohoku University is an expert in flame dynamics. Maruta and his team have been conducting a wide range of practical and theoretical experiments of weak flames in MFR ultimately for practical engine applications. They are looking to address the modelling capabilities of complex chemical reactions. In order to achieve this, the team is attempting to develop high fidelity chemical reaction kinetics, as well as intelligent computational methods.

scholarly journals A Review of Energy Loss Reduction Technologies for Internal Combustion Engines to Improve Brake Thermal Efficiency

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6656
Author(s):  
Zhijian Wang ◽  
Shijin Shuai ◽  
Zhijie Li ◽  
Wenbin Yu
Keyword(s):  
Energy Loss ◽  
Thermal Efficiency ◽  
Internal Combustion Engines ◽  
Fuel Efficiency ◽  
Ghg Emissions ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Loss Reduction ◽  
Low Carbon ◽  
To Come

Today, the problem of energy shortage and climate change has urgently motivated the development of research engaged in improving the fuel efficiency of internal combustion engines (ICEs). Although many constructive alternatives—including battery electric vehicles (BEVs) and low-carbon fuels such as biofuels or hydrogen—are being put forward, they are starting from a very low base, and still face significant barriers. Nevertheless, 85–90% of transport energy is still expected to come from combustion engines powered by conventional liquid fuels even by 2040. Therefore, intensive passion for the improvement of engine thermal efficiency and decreasing energy loss has driven the development of reliable approaches and modelling to fully understand the underlying mechanisms. In this paper, literature surveys are presented that investigate the relative advantages of technologies mainly focused on minimizing energy loss in engine assemblies, including pistons and rings, bearings and valves, water and oil pumps, and cooling systems. Implementations of energy loss reduction concepts in advanced engines are also evaluated against expectations of meeting greenhouse gas (GHG) emissions compliance in the years to come.

scholarly journals Hydrogen-Methane Blend Fuelling of a Heavy-Duty, Direct-Injection Engine

2007 ◽  
Author(s):  
G. P. McTaggart-Cowan ◽  
S. R. Munshi ◽  
S. N. Rogak ◽  
P. G. Hill ◽  
W. K. Bushe
Keyword(s):  
Natural Gas ◽  
Power Plants ◽  
Internal Combustion Engines ◽  
Direct Injection ◽  
Ghg Emissions ◽  
Combustion Stability ◽  
Combustion Engines ◽  
Heavy Duty ◽  
Steam Methane ◽  
Transportation Applications

Combining hydrogen with natural gas as a fuel for internal combustion engines provides an early opportunity to introduce hydrogen into transportation applications. This study investigates the effects of fuelling a heavy-duty engine with a mixture of hydrogen and natural gas injected directly into the combustion chamber. The combustion system is unmodified from that developed for natural gas fuelling. The results demonstrate that hydrogen can have a significant beneficial effect in reducing emissions without affecting efficiency or requiring significant engine modifications. Combustion stability is enhanced through the higher reactivity of the hydrogen, resulting in reduced emissions of unburned methane. The fuel’s lower carbon-energy ratio also reduces CO2 emissions. These results combine to significantly reduce tailpipe greenhouse gas (GHG) emissions. However, the effect on net GHG’s, including both tailpipe and fuel-production emissions, depends on the source of the hydrogen. Cleaner sources, such as electrolysis based on renewables and hydro-electric power, generate a significant net reduction in GHG emissions. Hydrogen generated by steam-methane reforming is essentially GHG neutral, while electrolysis using electricity from fossil-fuel power plants significantly increases net GHG emissions compared to conventional natural gas fuelling.

scholarly journals Thermochemical recovery technology for improved modern engine fuel economy – part 1: analysis of a prototype exhaust gas fuel reformer

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 35252-35261 ◽  
Author(s):  
D. Fennell ◽  
J. Herreros ◽  
A. Tsolakis ◽  
K. Cockle ◽  
J. Pignon ◽  
...  
Keyword(s):  
Fuel Economy ◽  
Thermal Efficiency ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Particulate Emissions ◽  
Exhaust Gas ◽  
Engine Fuel ◽  
Combustion Engines ◽  
Fuel Reforming ◽  
Gas Fuel

Exhaust gas fuel reforming has the potential to improve the thermal efficiency of internal combustion engines, as well as simultaneously reduce gaseous and particulate emissions.

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