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A study of regulated and green house gas emissions from a prototype heavy-duty compressed natural gas engine under transient and real life conditions

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  • Grigoratos, Theodoros
  • Fontaras, Georgios
  • Martini, Giorgio
  • Peletto, Cesare

Abstract

A newly designed Compressed Natural Gas prototype engine was benchmarked against its parent Euro V compliant engine in terms of gaseous emissions and with particular view on regulated and Green House Gas emissions. The main technological innovation included a new cylinder head equipped with a Variable Valve Actuator system designed to increase the efficiency compared to the reference throttled engine. The objective of the study was to examine the effect of this system on the operation of the prototype engine. Engine stand-alone tests represented the first step of this analysis. Afterwards, both engines were installed on the same truck and tested under different operating conditions. Vehicle tests included measurements on a chassis dynamometer as well as on-road with the aim of verifying real-world emissions. CO2 emissions and Brake Specific Fuel Consumption of the prototype were lower compared to the reference engine, with this phenomenon being more pronounced on-road. Furthermore, reduced NOx and CO emissions were observed under all operating conditions. On the other hand, the introduction of the prototype engine had a negative effect on CH4 emissions. Despite that the prototype was initially designed to fulfill the EURO V standards, no pollutant exceeded the EURO VI limits over homologation cycles.

Suggested Citation

  • Grigoratos, Theodoros & Fontaras, Georgios & Martini, Giorgio & Peletto, Cesare, 2016. "A study of regulated and green house gas emissions from a prototype heavy-duty compressed natural gas engine under transient and real life conditions," Energy, Elsevier, vol. 103(C), pages 340-355.
    • Handle: RePEc:eee:energy:v:103:y:2016:i:c:p:340-355
    DOI: 10.1016/j.energy.2016.02.157
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    Cited by:

    1. Rosero, Fredy & Fonseca, Natalia & López, José-María & Casanova, Jesús, 2021. "Effects of passenger load, road grade, and congestion level on real-world fuel consumption and emissions from compressed natural gas and diesel urban buses," Applied Energy, Elsevier, vol. 282(PB).
    2. Barouch Giechaskiel & Roberto Gioria & Massimo Carriero & Tero Lähde & Fabrizio Forloni & Adolfo Perujo & Giorgio Martini & Luigi Maurizio Bissi & Roberto Terenghi, 2019. "Emission Factors of a Euro VI Heavy-duty Diesel Refuse Collection Vehicle," Sustainability, MDPI, vol. 11(4), pages 1-15, February.
    3. Pedro Gerber Machado & Ana Carolina Rodrigues Teixeira & Flavia Mendes de Almeida Collaço & Adam Hawkes & Dominique Mouette, 2020. "Assessment of Greenhouse Gases and Pollutant Emissions in the Road Freight Transport Sector: A Case Study for São Paulo State, Brazil," Energies, MDPI, vol. 13(20), pages 1-26, October.
    4. Myung, Cha-Lee & Jang, Wonwook & Kwon, Sangil & Ko, Jinyoung & Jin, Dongyoung & Park, Simsoo, 2017. "Evaluation of the real-time de-NOx performance characteristics of a LNT-equipped Euro-6 diesel passenger car with various vehicle emissions certification cycles," Energy, Elsevier, vol. 132(C), pages 356-369.
    5. Flávia Mendes de Almeida Collaço & Ana Carolina Rodrigues Teixeira & Pedro Gerber Machado & Raquel Rocha Borges & Thiago Luis Felipe Brito & Dominique Mouette, 2022. "Road Freight Transport Literature and the Achievements of the Sustainable Development Goals—A Systematic Review," Sustainability, MDPI, vol. 14(6), pages 1-18, March.
    6. Zhang, Qiang & Li, Menghan & Li, Guoxiang & Shao, Sidong & Li, Peixin, 2017. "Transient emission characteristics of a heavy-duty natural gas engine at stoichiometric operation with EGR and TWC," Energy, Elsevier, vol. 132(C), pages 225-237.
    7. Pedro G. Machado & Ana C. R. Teixeira & Flavia M. A. Collaço & Dominique Mouette, 2021. "Review of life cycle greenhouse gases, air pollutant emissions and costs of road medium and heavy‐duty trucks," Wiley Interdisciplinary Reviews: Energy and Environment, Wiley Blackwell, vol. 10(4), July.

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