A numerical investigation on the influence of EGR in a supercharged SI engine fueled with gasoline and alternative fuels

2014 ◽  
Vol 83 ◽  
pp. 260-269 ◽  
Author(s):  
Mohsen Mardi K ◽  
Shahram Khalilarya ◽  
Arash Nemati
Keyword(s):  
Numerical Investigation ◽  
Alternative Fuels ◽  
Si Engine

Combustion Characteristics of Various Alternative Fuels in SI Engine

1981 ◽  
Author(s):  
Kosei Andoh ◽  
Kenshin Yonemochi ◽  
Hiroki Kawajiri ◽  
Kiyotoshi Sakuma ◽  
Hideaki Tanabe ◽  
...  
Keyword(s):  
Alternative Fuels ◽  
Combustion Characteristics ◽  
Si Engine

A Comparative Study of the Performance of a SI Engine Fuelled by Natural Gas as Alternative Fuel by Thermodynamic Simulation

2009 ◽  
Author(s):  
Mehrnoosh Dashti ◽  
Ali Asghar Hamidi ◽  
Ali Asghar Mozafari
Keyword(s):  
Experimental Data ◽  
Natural Gas ◽  
Thermal Efficiency ◽  
Alternative Fuels ◽  
Thermodynamic Simulation ◽  
Internal Combustion ◽  
Alternative Fuel ◽  
Spark Ignition Engine ◽  
Solution Temperature ◽  
Si Engine

With the declining energy resources and increase of pollutant emissions, a great deal of efforts has been focused on the development of alternatives for fossil fuels. One of the promising alternative fuels to gasoline in the internal combustion engine is natural gas [1–5]. The application of natural gas in current internal combustion engines is realistic due to its many benefits. The higher thermal efficiency due to the higher octane value and lower exhaust emissions including CO2 as a result of the lower carbon to hydrogen ratio of the fuel are the two important feature of using CNG as an alternative fuel. It is well known that computer simulation codes are valuable economically as a cost effective tool for design and analysis of the engine operations. In the present work the use of an exiting spark ignition engine to run on both gasoline and CNG is evaluated by thermodynamic simulation of the engine cycle. The stepwise calculations for pressure and temperature of the cylinder at compression process, ignition delay time, combustion and expansion processes have been considered. The first law of thermodynamics is applied for all steps and Newton-Raphson method is used for the numerical solution. Temperature dependent specific heat capacity and as a result specific enthalpy, entropy, internal energy and specific Gibbs functions are calculated in each step. Two zones model for the combustion process simulation has been used and the mass burning rate is predicted by considering the propagation of the flame front spherically. The performance characteristics including power, IMEP, ISFC, thermal efficiency and emissions concentration of SI engine on both gasoline and CNG fuel are determined by the model. In order to validate the model, the results are compared with the corresponding experimental data. It is found that the simulated results show reasonable agreement with the experimental data.

Experimental and numerical investigation on H2/CO formation and their effects on combustion characteristics in a natural gas SI engine

Energy ◽  
2018 ◽  
Vol 143 ◽  
pp. 597-605 ◽  
Author(s):  
Changpeng Liu ◽  
Zhi Wang ◽  
Heping Song ◽  
Yunliang Qi ◽  
Yanfei Li ◽  
...  
Keyword(s):  
Natural Gas ◽  
Numerical Investigation ◽  
Combustion Characteristics ◽  
Si Engine

scholarly journals Potential of hydrogen addition to natural gas or ammonia as a solution towards low- or zero-carbon fuel for the supply of a small turbocharged SI engine

2021 ◽  
Vol 312 ◽  
pp. 07022
Author(s):  
Alfredo Lanotte ◽  
Vincenzo De Bellis ◽  
Enrica Malfi
Keyword(s):  
Alternative Fuels ◽  
Laminar Flame ◽  
Combustion Engine ◽  
Numerical Study ◽  
Combustion Process ◽  
Pollutant Emissions ◽  
Si Engine ◽  
Hydrogen Addition ◽  
Emission Regulations ◽  
Zero Carbon

Nowadays there is an increasing interest in carbon-free fuels such as ammonia and hydrogen. Those fuels, on one hand, allow to drastically reduce CO2 emissions, helping to comply with the increasingly stringent emission regulations, and, on the other hand, could lead to possible advantages in performances if blended with conventional fuels. In this regard, this work focuses on the 1D numerical study of an internal combustion engine supplied with different fuels: pure gasoline, and blends of methane-hydrogen and ammonia-hydrogen. The analyses are carried out with reference to a downsized turbocharged two-cylinder engine working in an operating point representative of engine operations along WLTC, namely 1800 rpm and 9.4 bar of BMEP. To evaluate the potential of methane-hydrogen and ammonia-hydrogen blends, a parametric study is performed. The varied parameters are air/fuel proportions (from 1 up to 2) and the hydrogen fraction over the total fuel. Hydrogen volume percentages up to 60% are considered both in the case of methane-hydrogen and ammonia-hydrogen blends. Model predictive capabilities are enhanced through a refined treatment of the laminar flame speed and chemistry of the end gas to improve the description of the combustion process and knock phenomenon, respectively. After the model validation under pure gasoline supply, numerical analyses allowed to estimate the benefits and drawbacks of considered alternative fuels in terms of efficiency, carbon monoxide, and pollutant emissions.

Numerical Simulation of a Spark Ignition Engine Using Liquid Fuels and Liquid Fuel Blends

2003 ◽  
Author(s):  
K. Majmudar ◽  
K. Aung
Keyword(s):  
Numerical Simulations ◽  
Liquid Fuel ◽  
Alternative Fuels ◽  
Current Model ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Liquid Fuels ◽  
Si Engine ◽  
Fuel Blends ◽  
Si Engines

The use of alternative fuels such as methanol and ethanol in spark-ignition (SI) engines is beneficial to the environment as it reduces emissions of pollutants such as NOx from these engines with slight penalty on the performance. This paper investigated the use of liquid fuel blends such as ethanol/gasoline blend in an SI engine by numerical simulations. The numerical simulations were based on the models of finite heat release, cylinder heat transfer, pumping losses, and friction losses. Simulations were carried out to evaluate the effects of compression ratio, equivalence ratio, ignition timing, and engine speed on the performance of the SI engine. The results of the simulations were compared with experimental data from the literature to validate the simulations. Good agreements between the computed and experimental results were obtained. The results showed that the current model could satisfactorily predict the performance of an SI engine fueled by liquid fuel blends.

The optimization of engine operating parameters via SWARA and ARAS hybrid method in a small SI engine using alternative fuels

2020 ◽  
Vol 258 ◽  
pp. 120685 ◽  
Author(s):  
Mustafa Kemal Balki ◽  
Sinan Erdoğan ◽  
Selman Aydın ◽  
Cenk Sayin
Keyword(s):  
Hybrid Method ◽  
Alternative Fuels ◽  
Operating Parameters ◽  
Si Engine
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