The EMD SD40 is an American 6-axle diesel-electric locomotive built by General Motors Electro-Motive Division between January 1966 and August 1972. 1,268 locomotives were built between 1966 and 1972. In 1972, an improved version with new electronics was developed and marketed as a new locomotive, the SD40-2 .

The EMD SD40-2 is a 3,000-horsepower (2,200 kW) C-C diesel–electric locomotive built by EMD from 1972 to 1989. The SD40-2 was introduced in January 1972 as part of EMD's Dash 2 series, competing against the GE U30C .

2025年2月20日 · The SD40 series was EMD's turbocharged models in its new 645 line. The standard SD40 sold more than 1,200 examples, illustrating the industry's desire for higher horsepower six-axle designs. However, the builder could never have envisioned its "Dash 2" variant - the SD40-2 - would go on to become one of its all-time best sellers.

sd40型柴油机车是美国 通用汽车 易安迪公司（gm-emd）在1966年推出的一款柴油机车，主要竞争对象是通用电气公司的u30c型柴油机车，以及美国机车公司的世纪630型柴油机车。

The EMD SD40A is a model of diesel-electric locomotive built by General Motors Electro-Motive Division between 1969 and 1970. 18 locomotives were built for the Illinois Central Railroad.

EMD SD40 and SD40A; Data Sheet Information Compiled by: JEAN-DENIS BACHAND: New: 1 September 2006 : Artwork by: Jean-Denis Bachand-Engine Builder: EMD: Engine: 645E3 16 cylinder: Bore & Stroke: 8.5" X 10" RPM (Maximum / Minimum) 900 / 315 : Main Generator: GM - AR10: Horsepower: 3000:

2024年3月25日 · History and overview of the EMD SD40 six-axle, 3,000-hp diesel locomotive and the railroads that operated it

The EMD (Electro Motive Division) SD40 is a type of six-axle, 16-cylinder, 3,000hp diesel locomotive built from 1966 to 1972 (though first introduced in 1964). It is the predecessor or precursor to the SD40-2, and the initial successor to the SD35.

SD40-2型柴油机车是美国机车制造商通用汽车电动汽车部（EMD）生产的一系列六轴内燃机车。 该系列共制造了3949台机器。这使得SD40-2成为世界上制造最频繁的内燃机车之一。英国铁路Class59源自该系列。

2025年3月13日 · The SD38-2 and SD40-2 were very similar externally, with the relatively long frame and short hood resulting in large "porches" at either end. The SD38-2 had two radiator fans and two exhaust stacks, while the SD40-2 had three radiator fans and a single turbocharger exhaust stack (changed to a flat silencer housing on later units).