The GE AC4400CW, sometimes referred as " AC44CW ", is a 4,400 horsepower (3,300 kW) diesel-electric locomotive that was built by GE Transportation Systems between 1993 and 2004. It is similar to the Dash 9-44CW, but uses AC traction motors …

SP in Transition by Bill Shippen and Joe Shine - Four Ways West Publications. Southern Pacific Rails - a motive power finale by Peter Limas has a number of images and data concerning SP AC4400's. Home

One main difference between the SP AC4400’s and their UP counterparts (C44AC) is that the SP versions do not have an isolated cab. Essentially, the UP units have some additional cushioning and acoustic insulation that makes them quieter for the crews.

本文即介绍交付给UP的AC4400CW型内燃机车—— AC44CW型和AC44CW-CTE型机车。 AC4400CW型内燃机车是GE Transportation第一款提供可选径向转向架设计的内燃机车，旨在增加附着力并减少轮对和轨道的磨损。 但值得注意的是，UP订购的AC4400CW型内燃机车，均无装用径向转向架。 1994年，UP、CNW以及SP向GE Transportation采购AC44CW型机车。 其中，CNW订购35台（8801号~8835号），SP订购278台（101号~378号）。 1995年4月，UP收 …

2018年11月22日 · Brand-new General Electric AC4400CWs were the shot in the arm Southern Pacific needed to modernize its diesel fleet in the 1990s.

2025年1月1日 · The AC4400CW was basically a variant of the C44-9W in that it featured AC (alternating current) traction motors instead of the more traditional DC (direct current) traction motors. Different from the traditional DCs, AC traction motors are much more simple, reliable, and easier to maintain albeit they costs far more.

The GE (General Electric) AC4400CW is a high-powered six-axle, AC-traction 4,400hp diesel locomotive built from 1994 to 2004 (first introduced in 1993). An example of an early CP (Canadian Pacific) 'hi-aid' trucked AC4400CW.

2012年1月12日 · Southern Pacific GE AC4400's battle the 3.5% grade toward the tunnel at the summit of Tennessee Pass in a spring snow storm. We watch the three SP GE AC4400's in the lead. You can hear the wheels...

本文即介绍交付给美国联合太平洋铁路的AC4400CW型内燃机车——AC44CW型和AC44CW-CTE型机车。 可选的径向转向架. AC4400CW型内燃机车是GE Transportation第一款提供可选径向转向架设计的内燃机车，旨在增加附着力并减少轮对和轨道的磨损。 但值得注意的是，联合太平洋铁路订购的AC4400CW型内燃机车，均无装用径向转向架。 AC44CW型机车（6145号~6999号、7080号~7297号） 1994年，联合太平洋铁路、芝加哥和西北运输以及南太平洋运输向GE …

4 days ago I posted about a coal train I saw decending from Soldier Summit heading west. That train had an SP AC44 as #2, these used to seem common but now seem pretty rare. Today I saw the same train (unloaded this time) heading north through Salt Lake City with the faded SP unit leading. Nice catch.