About: EMD GP49

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An EMD GP49 is a 4-axle diesel locomotive built by General Motors Electro-Motive Division. Power was provided by an EMD 645F3B 12-cylinder engine which generated 2,800 horsepower (2.09 MW). The GP49 was marketed as one of four models in the 50 series introduced in 1979. The 50 series includes GP/SD49 and GP/SD50. Both the GP and SD50 was relatively popular with a total of 278 GP50s and 427 SD50s built. The SD49 was advertised but never built and a total of 9 GP49s were built.

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  • An EMD GP49 is a 4-axle diesel locomotive built by General Motors Electro-Motive Division. Power was provided by an EMD 645F3B 12-cylinder engine which generated 2,800 horsepower (2.09 MW). The GP49 was marketed as one of four models in the 50 series introduced in 1979. The 50 series includes GP/SD49 and GP/SD50. Both the GP and SD50 was relatively popular with a total of 278 GP50s and 427 SD50s built. The SD49 was advertised but never built and a total of 9 GP49s were built. Alaska Railroad was the sole customer that ordered the GP49. In two orders, the company first bought locomotives 2801-2804 in September 1983, locomotives 2805-2809 were subsequently built in May 1985. Six GP39Xs were built in November 1980 for the Southern Railway and upgraded to GP49s shortly thereafter. (en)
  • GP49型柴油机车是美国通用汽车易安迪公司(GM-EMD)在1980年代初推出的一款电力传动柴油机车,主要竞争对象是通用电气公司的B30-7型柴油机车。 1970年代中期,易安迪Dash 2系列柴油机车在激烈的美国市场取得成功之后,易安迪公司着手研制下一代柴油机车产品。1980年,易安迪公司正式推出以GP50、SD50型柴油机车为代表的“50系列”产品,该系列柴油机车装备了易安迪645F3B型柴油机、D87型牵引电动机、AR15型牵引发电机、“超级系列”(Super Series)轮对电子蠕滑控制装置等当时最新的技术成果。除了3500马力等级的GP50、SD50型柴油机车之外,易安迪公司亦同时推出了2800马力等级的GP49、SD49型柴油机车供铁路公司选择,以填补GP40-2型机车和GP50型机车之间的产品空档。然而,曾经被易安迪公司寄予厚望的“50系列”柴油机车在投放市场后销售表现却未如人意,主要原因是推出时间时间适逢1980年代初的美国经济衰退,加上1980年《》的实施带来的铁路公司并购潮,主要铁路公司对于新车采购都抱着审慎态度。结果,阿拉斯加铁路成为唯一一家订购GP49型柴油机车的铁路公司,该公司分别于1983年和1985年订购了两批共九台GP49型柴油机车,而六轴版本的SD49型柴油机车更是无人问津。 GP49型柴油机车是2800马力的干线货运用四轴柴油机车,采用单司机室、底架承载结构、双侧外走廊的罩式车体,车体上部自前向后由电气室、司机室、动力室、冷却室四部分组成。机车走行部标准配置为两台布贝格M型二轴转向架,采用导框式轴箱定位、摇动台式摇枕弹簧悬挂、两系弹簧悬挂装置(一系为轴箱螺旋圆弹簧,二系为摇枕钢板弹簧)、心盘牵引装置、双侧闸瓦制动装置。动力装置为一台2800马力、12气缸、二冲程、水冷式、涡轮增压的12-645F3B型柴油机。传动系统采用交—直流电传动,柴油机直接驱动一台AR15型交流发电机,发出的交流电通过大功率硅整流装置转换为直流电,然后供给四台D87型直流牵引电动机。牵引电动机采用轴悬式驱动方式,牵引齿轮传动比为4.13(62:15)。控制电路采用模块化电子控制系统,并设有由微处理器控制的易安迪“超级系列”轮对电子蠕滑控制装置。 (zh)
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  • An EMD GP49 is a 4-axle diesel locomotive built by General Motors Electro-Motive Division. Power was provided by an EMD 645F3B 12-cylinder engine which generated 2,800 horsepower (2.09 MW). The GP49 was marketed as one of four models in the 50 series introduced in 1979. The 50 series includes GP/SD49 and GP/SD50. Both the GP and SD50 was relatively popular with a total of 278 GP50s and 427 SD50s built. The SD49 was advertised but never built and a total of 9 GP49s were built. (en)
  • GP49型柴油机车是美国通用汽车易安迪公司(GM-EMD)在1980年代初推出的一款电力传动柴油机车,主要竞争对象是通用电气公司的B30-7型柴油机车。 1970年代中期,易安迪Dash 2系列柴油机车在激烈的美国市场取得成功之后,易安迪公司着手研制下一代柴油机车产品。1980年,易安迪公司正式推出以GP50、SD50型柴油机车为代表的“50系列”产品,该系列柴油机车装备了易安迪645F3B型柴油机、D87型牵引电动机、AR15型牵引发电机、“超级系列”(Super Series)轮对电子蠕滑控制装置等当时最新的技术成果。除了3500马力等级的GP50、SD50型柴油机车之外,易安迪公司亦同时推出了2800马力等级的GP49、SD49型柴油机车供铁路公司选择,以填补GP40-2型机车和GP50型机车之间的产品空档。然而,曾经被易安迪公司寄予厚望的“50系列”柴油机车在投放市场后销售表现却未如人意,主要原因是推出时间时间适逢1980年代初的美国经济衰退,加上1980年《》的实施带来的铁路公司并购潮,主要铁路公司对于新车采购都抱着审慎态度。结果,阿拉斯加铁路成为唯一一家订购GP49型柴油机车的铁路公司,该公司分别于1983年和1985年订购了两批共九台GP49型柴油机车,而六轴版本的SD49型柴油机车更是无人问津。 (zh)
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  • EMD GP49 (en)
  • GP49型柴油机车 (zh)
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