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A CFD (computational fluid dynamics) study for optimization of gas injector orientation for performance improvement of a dual-fuel diesel engine

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  • Chintala, Venkateswarlu
  • Subramanian, K.A.

Abstract

A CFD (computational fluid dynamics) study was conducted on a diesel engine (7.4kW) under dual-fuel mode (diesel–CNG (compressed natural gas), and diesel–H2 (hydrogen)) for optimization of gas injector orientation (location and angle). The critical distance of gas injector between intake valve axis and injector mounting point is found to be 248.4mm, 219.3mm, and 96.8mm at 1500rpm, 1800rpm, and 5000rpm at 2bar gas injection pressure. If gas injector is mounted beyond the critical point, the injected gas fuel cannot reach completely into the engine cylinder during suction stroke that may result to power drop and high chance of backfiring due to the gas accumulation. The optimum injector angle at the optimum location is found to be 0° and 225° with reference to axis of intake manifold based on better mixture formation and higher thermal efficiency as compared to other angles. The experimental results have good agreement with simulation results as BTE (brake thermal efficiency) increased from 27.3% with 45° to 28.9% with 225° injector's angle at distance of 245mm. A methodology for optimization of gas injector orientation for better thermal efficiency is emerged from this study. This study could also be applicable to other fluids including EGR (exhaust gas recirculation).

Suggested Citation

  • Chintala, Venkateswarlu & Subramanian, K.A., 2013. "A CFD (computational fluid dynamics) study for optimization of gas injector orientation for performance improvement of a dual-fuel diesel engine," Energy, Elsevier, vol. 57(C), pages 709-721.
    • Handle: RePEc:eee:energy:v:57:y:2013:i:c:p:709-721
    DOI: 10.1016/j.energy.2013.06.009
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    Cited by:

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    3. Hussein A. Mahmood & Nor Mariah. Adam & B. B. Sahari & S. U. Masuri, 2017. "New Design of a CNG-H 2 -AIR Mixer for Internal Combustion Engines: An Experimental and Numerical Study," Energies, MDPI, vol. 10(9), pages 1-27, September.
    4. Chintala, V. & Subramanian, K.A., 2015. "Experimental investigations on effect of different compression ratios on enhancement of maximum hydrogen energy share in a compression ignition engine under dual-fuel mode," Energy, Elsevier, vol. 87(C), pages 448-462.
    5. Kalsi, Sunmeet Singh & Subramanian, K.A., 2017. "Effect of simulated biogas on performance, combustion and emissions characteristics of a bio-diesel fueled diesel engine," Renewable Energy, Elsevier, vol. 106(C), pages 78-90.
    6. Chintala, Venkateswarlu & Subramanian, K.A., 2017. "A comprehensive review on utilization of hydrogen in a compression ignition engine under dual fuel mode," Renewable and Sustainable Energy Reviews, Elsevier, vol. 70(C), pages 472-491.
    7. Chintala, Venkateswarlu & Subramanian, K.A., 2014. "Assessment of maximum available work of a hydrogen fueled compression ignition engine using exergy analysis," Energy, Elsevier, vol. 67(C), pages 162-175.
    8. Yang Tang & Peng Zhao & Xiaoyu Fang & Guorong Wang & Lin Zhong & Xushen Li, 2022. "Numerical Simulation on Erosion Wear Law of Pressure-Controlled Injection Tool in Solid Fluidization Exploitation of the Deep-Water Natural Gas Hydrate," Energies, MDPI, vol. 15(15), pages 1-17, July.
    9. Tianbo Wang & Lanchun Zhang & Qian Chen, 2020. "Effect of Valve Opening Manner and Sealing Method on the Steady Injection Characteristic of Gas Fuel Injector," Energies, MDPI, vol. 13(6), pages 1-12, March.
    10. Chintala, V. & Subramanian, K.A., 2017. "Experimental investigation of autoignition of hydrogen-air charge in a compression ignition engine under dual-fuel mode," Energy, Elsevier, vol. 138(C), pages 197-209.
    11. Chintala, V. & Subramanian, K.A., 2015. "An effort to enhance hydrogen energy share in a compression ignition engine under dual-fuel mode using low temperature combustion strategies," Applied Energy, Elsevier, vol. 146(C), pages 174-183.
    12. Jafari, M. & Parhizkar, M.J. & Amani, E. & Naderan, H., 2016. "Inclusion of entropy generation minimization in multi-objective CFD optimization of diesel engines," Energy, Elsevier, vol. 114(C), pages 526-541.
    13. Tianbo Wang & Lanchun Zhang & Li Li & Jiahui Wu & Hongchen Wang, 2022. "Numerical Comparative Study on the In-Cylinder Mixing Performance of Port Fuel Injection and Direct Injection Gas-Fueled Engine," Energies, MDPI, vol. 15(14), pages 1-15, July.
    14. Zhu, Hongjun & Lin, Pengzhi & Pan, Qian, 2014. "A CFD (computational fluid dynamic) simulation for oil leakage from damaged submarine pipeline," Energy, Elsevier, vol. 64(C), pages 887-899.

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