THE EFFECT OF ADDING HYDROGEN ON THE PERFORMANCE AND THE CYCLIC VARIABILITY OF A SPARK IGNITION ENGINE POWERED BY NATURAL GAS

Authors

  • Andrej Chríbik Faculty of Mechanical Engineering, STU in Bratislava, Institute of Transport Technology and Design, Department of Vehicles, Ships and Internal Combustion Engines, Námestie slobody 17, 812 31 Bratislava
  • Marián Polóni Faculty of Mechanical Engineering, STU in Bratislava, Institute of Transport Technology and Design, Department of Vehicles, Ships and Internal Combustion Engines, Námestie slobody 17, 812 31 Bratislava
  • Ján Lach Faculty of Mechanical Engineering, STU in Bratislava, Institute of Transport Technology and Design, Department of Vehicles, Ships and Internal Combustion Engines, Námestie slobody 17, 812 31 Bratislava
  • Branislav Ragan Faculty of Mechanical Engineering, STU in Bratislava, Institute of Transport Technology and Design, Department of Vehicles, Ships and Internal Combustion Engines, Námestie slobody 17, 812 31 Bratislava

DOI:

https://doi.org/10.14311/AP.2014.54.0010

Abstract

This paper deals with the influence of blending hydrogen (from 0 to 50% vol.) on the parameters and the cyclic variability of a Lombardini LGW702 combustion engine powered by natural gas. The experimental measurements were carried out at various air excess ratios and at various angles of spark advance, at an operating speed of 1500 min−1. An analysis of the combustion pressure showed that as the proportion of hydrogen in the mixture increases, the maximum pressure value also increases. However, at the same time the cyclic variability decreases. Both the ignition-delay period and the period of combustion of the mixture become shorter, which requires optimization of the spark advance angle for various proportions of hydrogen in the fuel. The increasing proportion of hydrogen extends the flammability limit to the area of lean-burn mixtures and, at the same time, the coefficient of cyclic variability of the mean indicated pressure decreases.

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Published

2014-02-28

Issue

Vol. 54 No. 1 (2014)

Section

Articles

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How to Cite

Chríbik, A., Polóni, M., Lach, J., & Ragan, B. (2014). THE EFFECT OF ADDING HYDROGEN ON THE PERFORMANCE AND THE CYCLIC VARIABILITY OF A SPARK IGNITION ENGINE POWERED BY NATURAL GAS. Acta Polytechnica, 54(1), 10-14. https://doi.org/10.14311/AP.2014.54.0010