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The project/research was financed in the framework of the project Lublin University of Technology – Regional Excellence Initiative, funded by the Polish Ministry of Science and Higher Education
(contract no. 030/RID/2018/19).
This paper presents the research results for a diesel and hydrogen fueled engine. The research object is a four-cyl-
inder, four-stroke ADCR engine with a displacement of 2,636 cm 3
. In the experiments, glow plugs were replaced
with compressed hydrogen injectors and a special adapter. Hydrogen was supplied directly into a combustion
chamber using a test injector. A hydrogen dose in the tests was changed at selected test points and ranged from 0 to
160 dm 3/min. The research were conducted at 1,500 rpm. A hydrogen injection start angle and maximum hydrogen
dose were specified from the preliminary experiments. The following parameters were analyzed: indicated mean
effective pressure, maximum pressure, crank angle of maximum cylinder pressure occurrence and heat release.
The obtained results were statistically analyzed. The conducted analysis focused on determining whether there
are significant differences between early and late injection and how these changes affect the measured parameters.
