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The MK5000C is a North American diesel-electric locomotive developed by the rail division of Morrison Knudsen known as MK Rail. At the time of its introduction in 1994, the MK5000C was the most powerful single prime mover diesel-electric locomotive ever made, a title it would hold for only for one year until GE Transportation Systems released its competing AC6000CW model in 1995. In the early 1990s MK Rail, a long time locomotive remanufacturer, announced its plan to compete directly with Electro Motive Division (EMD) and GE Transportation Systems (GE) by beginning its own high-horsepower locomotive program, starting with a DC drive locomotive and continuing with and AC drive locomotives in later years. In response to the MKRail program, GE announced the 6000 hp AC drive GE AC6000CW, and EMD announced the SD80MAC, and later the SD90MAC both AC drive locomotives. == Technical == The MK5000C was powered by the 5000 hp Caterpillar V12 3612 diesel engine. This diesel engine remains one of the largest engine blocks used in rail service in North America. The Cat 3612 features a bore with a stroke and has a displacement per cylinder, total. The 3612 has dual turbochargers that are liquid aftercooled. The 3612 idles at 300 rpm and has a maximum speed of 1000 rpm. The Caterpillar 3612 drove a KATO 16P12-27000 main alternator which was capable of handling 8400 amperes at 1315 V DC at 1000 rpm. The power generated by the main alternator drove 6 MK1000 traction motors, each with a gear ratio of 83:20 and connected to wheels which allowed the MK5000C a maximum speed of . The MK5000C rode on two 3 axle Dofasco designed bolster-less trucks, the same that many Canadian MLW and GE designed locomotives ride on. The first 3 MK5000C were long, while the last three were in length, all 6 were tall and wide. The MK5000C weighed . Like most modern locomotives the MK5000C was microprocessor controlled, using an in-house designed system called the MK-LOC. This system monitored the performance of all aspects of the locomotive and controlled the power output as well as the traction control/adhesion of the locomotive. The MK5000C also had electro-pneumatic braking, provided by the EPIC 3102 air brake system which can be found on locomotives of other builders. The MK5000C carried 5300 US gallons (20,100 L) of diesel, 246 US gal (931 L) of lubricating oil, and 320 gallons (1,210 L) of coolant. This coolant system was unlike that of most other North American locomotives, using a water/antifreeze mix; only with a few Caterpillar repowered switchers and the Electro Motive Division SD90MAC share this trait. The MK5000C generated of continuous tractive effort, and produced around 35% adhesion on dry rail. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「MK5000C」の詳細全文を読む スポンサード リンク
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