苏联内燃机车科学研究院为重型机械和运输机械制造工业部制定了一整套《宽轨铁路内燃机车》标准,对改进内燃机车运行性能、提高寿命、减少故障、降低噪声等提出了一系列要求。例如要求将 2TЭ121型内燃机车的功率提高到2×4000马力,大修寿命从60万公里提高到120万公里;TЭП75型客运内燃机车的功 Soviet Union Diesel Locomotive Research Institute for heavy machinery and transport machinery manufacturing industry developed a set of “wide-gauge railway diesel locomotives” standards, to improve the performance of diesel locomotives to improve life expectancy, reduce failure and reduce noise and put forward a series of requirements. For example, the power of 2T-E121 diesel locomotive is required to be increased to 2 × 4,000 horsepower and the life span of overhaul is raised from 600,000 km to 1,200,000 km. The power of T-75 passenger diesel locomotive