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德国对106型调车机车进行了改造。重点是将GS12/5。2型液力传动装置改为新研制的GS20/4.9型液力传动装置。后者采用了向心涡轮运转变矩器,从而改善了传动装置的性能。同时传动装置输入转速和输入功率也相应地降低了。但调车机车起动牵引力提高了8%,总的调车能力不变;空转油耗降低了4kg/h,全负荷工况油耗率降低了14g/kWh,共可节约柴油17～30%。400台机车改造完毕后,每年可节约燃油8500t。同时噪声也降低3～4dB。
Germany on the 106 shunting locomotive has been transformed. The emphasis is to change the GS12 / 5.2 hydraulic transmission to the newly developed GS20 / 4.9 hydraulic transmission. The latter uses centripetal turbine torque converters, which improve the performance of the transmission. At the same time, the input speed and input power of the transmission are correspondingly reduced. However, the shunting locomotive started traction increased by 8%, the total shunting capacity unchanged; idling fuel consumption reduced by 4kg / h, full load conditions fuel consumption rate decreased by 14g / kWh, a total of 17 to 30% of diesel fuel savings. After the completion of 400 locomotives, each year can save 8500t of fuel. At the same time the noise is also reduced by 3 ~ 4dB.