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津巴布韦国家铁路(NRZ)目前正在改造20台D9型电传动内燃机车。改造的这20台机车将换装最近购买的美国Caterpillar3512柴油机。这种气缸容积为51.8L的V12发动机将取代早先生产的Caterpillar柴油机,这种柴油机在17年之前首次装用于这些B_0—B_0轴式的机车。为满足津巴布韦国家铁路的技术条件,3512型柴油机采用废气涡轮增压和后冷方式,在1500r/min下干线牵引时的标定功率为813kW,该型机装用伍德沃德(Woodward)
The Zimbabwe National Railway (NRZ) is currently rebuilding 20 D9 electric drive diesel locomotives. The 20 modified locomotives will be refurbished the recently purchased American Caterpillar 3512 diesel engine. This 51.8-liter V12 engine will replace the earlier-produced Caterpillar diesel engine, first installed on these B_0-B_0-axis locomotives 17 years ago. To meet the technical conditions of the Zimbabwe National Railway, the Model 3512 diesel engine uses exhaust turbocharging and aftercooled mode with a nominal power of 813kW at 1500r / min for mains towing. The model is equipped with a Woodward-