Study of the working process of a dual-fuel hydrogen engine Andrey Kuleshov, Alexey Kuleshov, Vladimir Markov, Fedor Karpets, Venera Yumagulova and Aidar Nurullin E3S Web of Conf., 390 (2023) 05020 Published online: 01 June 2023 DOI: 10.1051/e3sconf/202339005020