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

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.

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

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History

  • Receive Date: 05 September 2023
  • Revise Date: 01 November 2023
  • Accept Date: 19 November 2023

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