TY JOUR TI IMPROVEMENT OF VALVE TIMING GEAR OPERATING CHARACTERISTICS FOR DIESEL ENGINE 14D40 OF LOCOMOTIVE 62M KW diesel locomotive engines KW valve timing gear KW VTG KW operating characteristics KW design improvement JO Bulletin of Bryansk state technical university AU Slivinskiy, E.V. AU kiselev, V.I. PY 2019 IS 2019 PB Bryansk State Technical University