Co-Combustion of Hydrogen with Diesel and Biodiesel (RME) in a Dual-Fuel Compression-Ignition Engine

Wojciech Tutak (), Arkadiusz Jamrozik and Karol Grab-Rogaliński
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Wojciech Tutak: Department of Thermal Machinery, Czestochowa University of Technology, 42-201 Czestochowa, Poland
Arkadiusz Jamrozik: Department of Thermal Machinery, Czestochowa University of Technology, 42-201 Czestochowa, Poland
Karol Grab-Rogaliński: Department of Thermal Machinery, Czestochowa University of Technology, 42-201 Czestochowa, Poland

Energies, 2023, vol. 16, issue 13, 1-18

Abstract: The utilization of hydrogen for reciprocating internal combustion engines remains a subject that necessitates thorough research and careful analysis. This paper presents a study on the co-combustion of hydrogen with diesel fuel and biodiesel (RME) in a compression-ignition piston engine operating at maximum load, with a hydrogen content of up to 34%. The research employed engine indication and exhaust emissions measurement to assess the engine’s performance. Engine indication allowed for the determination of key combustion stages, including ignition delay, combustion time, and the angle of 50% heat release. Furthermore, important operational parameters such as indicated pressure, thermal efficiency, and specific energy consumption were determined. The evaluation of dual-fuel engine stability was conducted by analyzing variations in the coefficient of variation in indicated mean effective pressure. The increase in the proportion of hydrogen co-combusted with diesel fuel and biodiesel had a negligible impact on ignition delay and led to a reduction in combustion time. This effect was more pronounced when using biodiesel (RME). In terms of energy efficiency, a 12% hydrogen content resulted in the highest efficiency for the dual-fuel engine. However, greater efficiency gains were observed when the engine was powered by RME. It should be noted that the hydrogen-powered engine using RME exhibited slightly less stable operation, as measured by the COV IMEP value. Regarding emissions, hydrogen as a fuel in compression ignition engines demonstrated favorable outcomes for CO, CO 2 , and soot emissions, while NO and HC emissions increased.

Keywords: dual-fuel; diesel; hydrogen; RME; combustion; emission (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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