© Oleksandr Zakrevsky, Senior Research Fellow,
e-mail: ozakrevsky@insat.org.ua,
ORCID: 0000-0002-6810-5146;
© Andrii Holyk, Ph.D., Head of Division,
e-mail: aholyk@insat.org.ua,
ОRCID: 0000-0002-0994-9541;
© Mykola Nazarenko, Ph.D.,
Deputy Head of Centre,
e-mail: nnazarenko@insat.org.ua,
ORCID: 0000-0001-8649-9014;
© Viktor Ustymenko, Ph.D., Head of Section,
e-mail: vustymenko@insat.org.ua,
ОRCID: 0000-0003-3657-077X
(SE «State Road Transport Research Institute»)
HYDROGEN ADDITIVES FOR COMPRESSION-IGNITION ENGINES:
STATUS AND PROSPECTS OF APPLICATION
DOI: 10.33868/0365-8392-2025-4-285-2-8
Abstract. A review of scientific and technical literature sources allows for a discussion of the prospects of using hydrogen additives as fuel for converted diesel engines. Accordingly, the article provides characteristic examples of developments, including methods and means for adapting diesel engine operation to hydrogen additives, as well as innovative scientific and technical solutions applied for the deployment of hydrogen in this direction. In Ukraine, as in the rest of the world, scientific research has been conducted on the use of hydrogen additives for compression-ignition internal combustion engines. In particular, in recent years, such research has focused on adding small amounts of hydrogen as an additive to the primary fuel, as well as adding hydrogen-containing gas to improve engine efficiency and enhance their environmental performance. Thus hydrogen additives can serve as an alternative to liquid oil-based fuels, including being used in compression-ignition transport engines. When converting diesel engines and adapting them for the use of hydrogen additives, it is necessary to take into account the significant differences in the physico-chemical properties of hydrogen and diesel fuel, such as density, gravimetric and volumetric calorific value, auto-ignition temperature, and others. The examples provided in the article confirm that converting diesel engines and adapting them to the use of hydrogen additives can not only ensure saving of petroleum motor fuel but also improve the operational and environmental performance of the engines.
Keywords: hydrogen; diesel fuel; diesel engine; dual fuel engine; engine conversion.
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