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Combustion and Emission Enhancement of a Spark Ignition Two-Stroke Cycle Engine Utilizing Internal and External Exhaust Gas Recirculation Approach at Low-Load Operation

Author

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  • Amin Mahmoudzadeh Andwari

    (Centre for Advanced Powertrain and Fuels Research (CAPF), Department of Mechanical, Aerospace and Civil Engineering, Brunel University London, London UB8 3PH, UK
    Vehicle, Fuel and Environment Research Institute (VFERI), School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran 1439956191, Iran
    Automotive Development Centre (ADC), School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru)

  • Apostolos Pesyridis

    (Centre for Advanced Powertrain and Fuels Research (CAPF), Department of Mechanical, Aerospace and Civil Engineering, Brunel University London, London UB8 3PH, UK)

  • Vahid Esfahanian

    (Vehicle, Fuel and Environment Research Institute (VFERI), School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran 1439956191, Iran)

  • Mohd Farid Muhamad Said

    (Automotive Development Centre (ADC), School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru)

Abstract

Two-stroke cycle engines have always been prominent due to their distinctive advantage incorporating high power-to-weight ratio, however the drawbacks are poor combustion efficiency, fuel short-circuiting and excessive emission of uHC and CO. These problems are apparent at low-load and speed regions and are the major obstacle to their global acceptance. The deficiencies can be addressed by increasing the in-cylinder average charge temperature employing Exhaust Gas Recirculation (EGR). An experimental study is conducted to investigate the influence of utilizing EGR techniques, including Internal and External EGR, on combustion misfiring occurrence, combustion stability and exhaust emissions using a single cylinder two-stroke SI engine at idling, low and mid-load conditions. From the results, it is observed since the average in-cylinder charge temperature is increased, due to utilizing EGRs, engine’s low and mid-load irregular combustions (misfire) and exhaust emissions are remarkably supressed and almost all of misfire cycles eliminated depending on the percentage of EGRs. In terms of combustion stability, it is agreed in general the application of EGRs improves the cyclic variation of IMEP, P max and CA10 compared to conventional operation. However, applying Ex-EGR compared to In-EGR will deteriorate cyclic variability of IMEP and CA10.

Suggested Citation

  • Amin Mahmoudzadeh Andwari & Apostolos Pesyridis & Vahid Esfahanian & Mohd Farid Muhamad Said, 2019. "Combustion and Emission Enhancement of a Spark Ignition Two-Stroke Cycle Engine Utilizing Internal and External Exhaust Gas Recirculation Approach at Low-Load Operation," Energies, MDPI, vol. 12(4), pages 1-16, February.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:4:p:609-:d:206092
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    References listed on IDEAS

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    1. Andwari, Amin Mahmoudzadeh & Aziz, Azhar Abdul & Said, Mohd Farid Muhamad & Latiff, Zulkarnain Abdul, 2014. "Experimental investigation of the influence of internal and external EGR on the combustion characteristics of a controlled auto-ignition two-stroke cycle engine," Applied Energy, Elsevier, vol. 134(C), pages 1-10.
    2. Karvountzis-Kontakiotis, Apostolos & Andwari, Amin Mahmoudzadeh & Pesyridis, Apostolos & Russo, Salvatore & Tuccillo, Raffaele & Esfahanian, Vahid, 2018. "Application of Micro Gas Turbine in Range-Extended Electric Vehicles," Energy, Elsevier, vol. 147(C), pages 351-361.
    3. Amin Mahmoudzadeh Andwari & Apostolos Pesiridis & Vahid Esfahanian & Ali Salavati-Zadeh & Apostolos Karvountzis-Kontakiotis & Vishal Muralidharan, 2017. "A Comparative Study of the Effect of Turbocompounding and ORC Waste Heat Recovery Systems on the Performance of a Turbocharged Heavy-Duty Diesel Engine," Energies, MDPI, vol. 10(8), pages 1-17, July.
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    Cited by:

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    3. Clemens Gößnitzer & Shawn Givler, 2021. "A New Method to Determine the Impact of Individual Field Quantities on Cycle-to-Cycle Variations in a Spark-Ignited Gas Engine," Energies, MDPI, vol. 14(14), pages 1-14, July.
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