The aim of graduated thesis is to identify and analyze the different life-cycle costs of engines for railway applications meeting the required emission limits by STAGE III.B. Sense the thesis is to solve the problem of use of motor locomotives in terms of their low utilization of installed capacity, at the initiative of the company ZOS, a.s .. Hence the consideration required to split the nominal power locomotives into several smaller engines. Effective tool to compare single-engine version of the locomotive (one installed combustion engine full power) with more diesel version of the LCC analysis of the product - compare life cycle costs. The conclusion of this thesis can be stated that the LCC analysis gave a report on effective solutions to the internal combustion engine 1 and 3 of the engine. The result is also processing methodology life cycle costs specific Locomotive engines and initial evaluation of benefits, respectively. drawbacks solutions.