FEATURES OF AUTOIGNITION OF METHANE-HYDROGEN MIXTURES

2020 ◽  
Author(s):  
A. V. ARUTYUNOV ◽  
◽  
A. A. BELYAEV ◽  
K. YA. TROSHIN ◽  
A. V. NIKITIN ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Kinetic Simulation ◽  
Temperature Range ◽  
Hydrogen Mixtures

The results of experimental studies and the kinetic simulation of au- toignition of stoichiometric methane-hydrogen-air mixtures in the temperature range of 700-1000 K and pressures of 1-15 atm, relevant to the possibility of undesired autoignition (knock) in a spark-ignition engine are presented.

scholarly journals Ethanol/Gasoline Blends as Alternative Fuel in Last Generation Spark-Ignition Engines: A Review on CO and HC Engine Out Emissions

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 4034
Author(s):  
Paolo Iodice ◽  
Massimo Cardone
Keyword(s):  
Physicochemical Properties ◽  
Alternative Fuels ◽  
Experimental Studies ◽  
Alternative Fuel ◽  
Exhaust Emissions ◽  
Spark Ignition ◽  
Operating Conditions ◽  
Spark Ignition Engine ◽  
Spark Ignition Engines ◽  
The Impact

Among the alternative fuels existing for spark-ignition engines, ethanol is considered worldwide as an important renewable fuel when mixed with pure gasoline because of its favorable physicochemical properties. An in-depth and updated investigation on the issue of CO and HC engine out emissions related to use of ethanol/gasoline fuels in spark-ignition engines is therefore necessary. Starting from our experimental studies on engine out emissions of a last generation spark-ignition engine fueled with ethanol/gasoline fuels, the aim of this new investigation is to offer a complete literature review on the present state of ethanol combustion in last generation spark-ignition engines under real working conditions to clarify the possible change in CO and HC emissions. In the first section of this paper, a comparison between physicochemical properties of ethanol and gasoline is examined to assess the practicability of using ethanol as an alternative fuel for spark-ignition engines and to investigate the effect on engine out emissions and combustion efficiency. In the next section, this article focuses on the impact of ethanol/gasoline fuels on CO and HC formation. Many studies related to combustion characteristics and exhaust emissions in spark-ignition engines fueled with ethanol/gasoline fuels are thus discussed in detail. Most of these experimental investigations conclude that the addition of ethanol with gasoline fuel mixtures can really decrease the CO and HC exhaust emissions of last generation spark-ignition engines in several operating conditions.

A Simulation Model of a Four-Stroke Spark Ignition Engine Fueled With Landfill Gases

2007 ◽  
Author(s):  
Guruprasath Narayanan ◽  
S. O. Bade Shrestha
Keyword(s):  
Simulation Model ◽  
Landfill Gas ◽  
Combustion Products ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Performance Parameters ◽  
Combustion Duration ◽  
Hydrogen Mixtures ◽  
Residual Gas ◽  
Gas Properties

A simulation model for establishment of performance parameters of a spark ignition engine fueled with landfill gas-methane and landfill gas-hydrogen mixtures is described. A two zone model was employed to estimate combustion duration, ignition lag, associated mass burning rates and performance parameters for various operating conditions in an internal combustion engine. The modeling consists of two main modules: a) a fuel-air and residual gas properties calculation, and b) equilibrium combustion product properties calculation with 13 species of equilibrium combustion products. The fuel-air and residual gas module calculates gas properties required in compression stroke and in an unburned zone of a combustion chamber. The equilibrium combustion products module calculates gas properties for the burned zone during combustion and expansion phases. In addition to engine parameters, combustion duration estimation methods were presented to accommodate the presence of high quantities of diluents such as carbon dioxide and nitrogen in methane to represent landfill gases, generally encountered in practice. Similarly, an effect of addition of hydrogen in landfill gas on performance of a spark ignition engine was also incorporated in the model. The pressure traces and other engine output parameters were modeled and compared with the experimental observations obtained in a variable compression single cylinder four-stroke spark ignition Co-operative fuel research (CFR) engine for different fuels that include methane, landfill gas and landfill gas–hydrogen mixtures and found satisfactory agreement. Matlab was used as the programming software in the model.

A Simulation Model of a Four-Stroke Spark Ignition Engine Fueled With Landfill Gases and Hydrogen Mixtures

2009 ◽  
Vol 131 (3) ◽  
Author(s):  
Guruprasath Narayanan ◽  
S. O. Bade Shrestha
Keyword(s):  
Simulation Model ◽  
Landfill Gas ◽  
Combustion Products ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Performance Parameters ◽  
Combustion Duration ◽  
Hydrogen Mixtures ◽  
Residual Gas ◽  
Gas Properties

A simulation model for establishment of performance parameters of a spark ignition engine fueled with landfill gas, methane, and landfill gas-hydrogen mixtures is described. A two zone model was employed to estimate combustion duration, ignition lag, associated mass burning rates, and performance parameters for various operating conditions in an internal combustion engine. The modeling consists of two main modules: (a) a fuel-air and residual gas properties calculation, and (b) equilibrium combustion product properties calculation with 13 species of equilibrium combustion products. The fuel-air and residual gas module calculates gas properties required in compression stroke and the unburned zone of a combustion chamber. The equilibrium combustion products module calculates gas properties for the burned zone during combustion and expansion phases. In addition to engine parameters, combustion duration estimation methods were presented to accommodate the presence of high quantities of diluents such as carbon dioxide and nitrogen in methane to represent landfill gases, generally encountered in practice. Similarly, an effect of the addition of hydrogen in landfill gas on performance of a spark ignition engine was also incorporated in the model. The pressure traces and engine power output parameters were modeled and compared with the experimental observations obtained in a variable compression single cylinder four-stroke spark ignition co-operative fuel research engine for different fuels that include methane, landfill gas, and landfill gas-hydrogen mixtures and found satisfactory agreement. MATLAB was used as the programming software in the model.

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