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Experimental studies on the effects of enhancing the concentration of oxygen in the inducted charge of a biogas fuelled spark ignition engine

Author

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  • Porpatham, E.
  • Ramesh, A.
  • Nagalingam, B.

Abstract

A biogas fuelled constant speed spark ignition engine was studied experimentally for its performance, emissions and combustion, under the influence of an increased oxygen concentration in the intake air and results were compared. A single cylinder diesel engine was modified for the purpose and was operated at 1500 rpm, maintaining the throttle opening at 25% and 100% for various equivalence ratios. The oxygen level in the intake air was kept at 21%, 22% and 23% by volume and the tests also maintained a compression ratio of 13:1 with a masked valve. A significant improvement in the brake thermal efficiency and brake power was observed at higher oxygen levels. The peak brake thermal efficiencies with 22% and 23% oxygen levels are 27% and 28% respectively, whereas with 21% oxygen level at the same equivalence ratio the efficiency to be 26.2%. The lean limit also got extended and at higher oxygen levels increased NOx, reduced HC and CO emissions were measured. Heat release rates showed enhanced combustion rates, which in turn were indicators for improvised thermal efficiencies. To maintain the NOx emissions well inside the set standards, a mere increase of 1%–2% oxygen level was observed to be ideal.

Suggested Citation

  • Porpatham, E. & Ramesh, A. & Nagalingam, B., 2018. "Experimental studies on the effects of enhancing the concentration of oxygen in the inducted charge of a biogas fuelled spark ignition engine," Energy, Elsevier, vol. 142(C), pages 303-312.
    • Handle: RePEc:eee:energy:v:142:y:2018:i:c:p:303-312
    DOI: 10.1016/j.energy.2017.10.025
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    Cited by:

    1. Muhamed Rasit Atelge & Halil Senol & Mohammed Djaafri & Tulin Avci Hansu & David Krisa & Abdulaziz Atabani & Cigdem Eskicioglu & Hamdi Muratçobanoğlu & Sebahattin Unalan & Slimane Kalloum & Nuri Azbar, 2021. "A Critical Overview of the State-of-the-Art Methods for Biogas Purification and Utilization Processes," Sustainability, MDPI, vol. 13(20), pages 1-39, October.
    2. Donatas Kriaučiūnas & Tadas Žvirblis & Kristina Kilikevičienė & Artūras Kilikevičius & Jonas Matijošius & Alfredas Rimkus & Darius Vainorius, 2021. "Impact of Simulated Biogas Compositions (CH 4 and CO 2 ) on Vibration, Sound Pressure and Performance of a Spark Ignition Engine," Energies, MDPI, vol. 14(21), pages 1-15, October.
    3. Khayum, Naseem & Anbarasu, S. & Murugan, S., 2021. "Optimization of fuel injection parameters and compression ratio of a biogas fueled diesel engine using methyl esters of waste cooking oil as a pilot fuel," Energy, Elsevier, vol. 221(C).
    4. Naderi, Alireza & Qasemian, Ali & Shojaeefard, Mohammad Hasan & Samiezadeh, Saman & Younesi, Mostafa & Sohani, Ali & Hoseinzadeh, Siamak, 2021. "A smart load-speed sensitive cooling map to have a high- performance thermal management system in an internal combustion engine," Energy, Elsevier, vol. 229(C).
    5. Abdullah Ebrahem Ebrahemi & Mohamed Abdallah Bassiony & Thaer Mahmoud Ibrahim Syam & Samer Ahmed, 2020. "Investigating the effect of the air inlet temperature on the combustion characteristics of a spark ignition engine fueled by biogas," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 10(4), pages 771-782, August.

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