Fuel and Combustion

Fuel and Combustion

Numerical investigation of performance parameters and emission of NOx pollutant of RCCI engine with methane-diesel fuel at different injection times and equivalence ratios

Document Type : Original Article

Authors
Mahdi Sarfarazi 1
Javad Khadem 2
Seyyed Iman Pourmousavi Kani 1
1 Department of Mechanical Engineering, Birjand University
2 Mechanical Eng, University of Birjand, Birjand, Iran
10.22034/jfnc.2023.415073.1358
Abstract
Reducing fuel consumption, pollutants, and increasing engine power and efficiency are important in the field of internal combustion engine research. Nowadays, reactive control compression ignition engines have attracted the attention of researchers as a new technology in the field of low temperature combustion. One of the problems in the field of low temperature combustion is the control of the combustion process. In this research, the numerical analysis of performance parameters and pollutant emissions of a methane-diesel reactive control compression ignition engine at injection times of -10, -20, -35 and -50 in three equivalence ratios of 0.25, 0.35 and 0.45 has been paid. CONVERGE CFD software was used for simulation. The results show that with advanced injection of diesel fuel, the pressure increases from -10 to -20, and with more advance at injection times of -35 and -50, the pressure decreases, which causes incomplete combustion. Also, advance injection of diesel fuel increases the parameter value of ignition delay and the length of the ignition interval, and at the time of 20 injection, the CA50 parameter value is closer to the top dead point, which is desirable. On the other hand, with the fuel injection advance from -10 to -20, the amount of NOx pollutant increases. Increasing the equivalence ratio, increases the indicator efficiency, ignition delay parameters, the length of the ignition interval, and CA50. Also, increasing this parameter from 0.35 to 0.45 reduces the heat release rate.
Keywords
Reactive Control Compression Ignition
Low Temperature Ignition
Start of Injection
AVL 5402 engine

Subjects

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Fuel and Combustion
Volume 16, Issue 1
Autumn 2023
Pages 40-60