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Effect of variable compression ratio and equivalence ratio on performance, combustion and emission of hydrogen port injection SI engine

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  • Pandey, Jayashish Kumar
  • Kumar, G.N.

Abstract

The present study includes an experimental investigation of the performance, combustion, and emission parameters of a hydrogen port fueled SI engine under wide-open throttle. The compression ratio (CR) is varied from 10 to 15, equivalence ratio (φ) from 0.4 to 1.0, and speed from 1400RPM to 1800RPM. The ignition timing is maintained at 20° before the top dead center. The brake thermal efficiency increases by nearly 10% from CR10 to CR15, and it also increased by 13.7% by changing φ from 0.4 to 0.9. Similarly, BP increases in the same fashion. The combustion enhances with an increase in peak pressure by increasing CR from 10 to 15 and φ from 0.4 to 0.9; however, φ 1.0 exhibits a negative trend. However, the NOX emission increases continuously with CR and φ, and so as the exhaust gas temperature. The carbon-based emissions are negligible, and volumetric efficiency decreases with φ and increases with CR.

Suggested Citation

  • Pandey, Jayashish Kumar & Kumar, G.N., 2022. "Effect of variable compression ratio and equivalence ratio on performance, combustion and emission of hydrogen port injection SI engine," Energy, Elsevier, vol. 239(PE).
    • Handle: RePEc:eee:energy:v:239:y:2022:i:pe:s0360544221027171
    DOI: 10.1016/j.energy.2021.122468
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    Cited by:

    1. Enzo Galloni & Davide Lanni & Gustavo Fontana & Gabriele D’Antuono & Simone Stabile, 2022. "Performance Estimation of a Downsized SI Engine Running with Hydrogen," Energies, MDPI, vol. 15(13), pages 1-12, June.
    2. Tian, Ying & Han, Jin & Bu, Yu & Qin, Chuan, 2023. "Simulation and analysis of fire and pressure reducing valve damage in on-board liquid hydrogen system of heavy-duty fuel cell trucks," Energy, Elsevier, vol. 276(C).
    3. Baraiya, Nikhil A. & Ramanan, Vikram & Nagarajan, Baladandayuthapani & Vegad, Chetankumar S. & Chakravarthy, S.R., 2023. "Dynamic mode decomposition of syngas (H2/CO) flame during transition to high-frequency instability in turbulent combustor," Energy, Elsevier, vol. 263(PD).
    4. Pandey, Jayashish Kumar & Dinesh, M.H. & Kumar, G.N., 2023. "A comparative study of NOx mitigating techniques EGR and spark delay on combustion and NOx emission of ammonia/hydrogen and hydrogen fuelled SI engine," Energy, Elsevier, vol. 276(C).

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