TY JOUR TI An Approach to Converting Mainline Freight Diesel Locomotives to Operation on a Gas-Diesel Cycle KW Self-contained locomotive KW thermal engine KW diesel fuel KW liquefied natural gas JO Bulletin of scientific research results AU Prohor, D.I. AU Lysenko, V.V. AU Nikitin, V.V. PY 2023 IS 2023 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"