Numerical Investigation of Reactivity Controlled Compression Ignition Engine Performance under Fuel Aggregation Collision to Piston Bowl Rim Edge Situation

Talesh Amiri, S.; Shafaghat, R.; Jahanian, O.; Fakhari, A. H.

doi:10.5829/ijee.2021.12.01.02

Document Type : Original Article

Authors

¹ Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran

² Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran

https://doi.org/10.5829/ijee.2021.12.01.02

Abstract

To better homogenize the mixture of fuel and air in the combustion chamber and to enhance the controllability of ignition timing in Reactivity Controlled Compression Ignition (RCCI) engines, controlling the start of injection (SOI) timing can be essential. By changing the SOI timing, at some specific crank angles (CAs), the fuel can impact the edge of the piston bowl and create some difficulties. In this research, initially, efforts are made to recognize the range of SOI timing in which this collision process takes place (in the range of 44-54° bTDC), then, performance and the emission levels of the engine were evaluated in the beginning and end of this interval. The findings suggest that the nitrogen oxides emissions and the maximum in-cylinder mean pressure are higher in SOI of 44° bTDC, as compared to those in the SOI timing of 54°bTDC, although the latter has higher ignition delay and unburnt hydrocarbon (UHC) emission. Moreover, some evaluations were carried out to examine how the temperature of the fuel-air mixture can affect the performance of the engine in this specific range. It was found that as the IVC temperature increases, it rises the indicated mean effective pressure (IMEP), in-cylinder pressure, and NOx emission.

Keywords

References

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Iranica Journal of Energy & Environment

Numerical Investigation of Reactivity Controlled Compression Ignition Engine Performance under Fuel Aggregation Collision to Piston Bowl Rim Edge Situation

References

References

Volume 12, Issue 1
March 2021
Pages 10-17

Numerical Investigation of Reactivity Controlled Compression Ignition Engine Performance under Fuel Aggregation Collision to Piston Bowl Rim Edge Situation

References

References

Volume 12, Issue 1March 2021Pages 10-17

Volume 12, Issue 1
March 2021
Pages 10-17