EMD F9
Model of 1750 hp North American diesel cab locomotive
From Wikipedia, the free encyclopedia
The EMD F9 is a 1,750 horsepower (1,300 kW) Diesel-electric locomotive produced between February 1953 and May 1960 by the Electro-Motive Division of General Motors (EMD) and General Motors Diesel (GMD). It succeeded the F7 model in GM-EMD's F-unit sequence. Final assembly was at GM-EMD's La Grange, Illinois plant. The F9 was also built in Canada by General Motors Diesel at their London, Ontario plant. A total of 92 cab-equipped lead A units and 156 cabless booster B units were built. The F9 was the fifth model in GM-EMD's highly successful "F" series of cab unit diesel locomotives.
General Motors Diesel (GMD, Canada)
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D&RGW F9 #5771 in 2009. Note the carbody filter grille ahead of the front porthole, the only reliable distinguishing feature of an F9. | |||||||||||||||||||||||||||||||||||||
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By the time cab units such as the F9 were built, railroads were turning to the road switcher-style of locomotive, as they had much better visibility from the cab without the need to lean out the window. The F9 was succeeded in most part by the EMD GP9.
Engine and powertrain
The F9 used a 16-cylinder 567C series Diesel engine developing 1,750 hp (1.30 MW) at 800 rpm. The 567 was designed specifically for locomotive applications, being a 45 degree V-type two-stroke design, with 567 cu in (9.29 L) displacement per cylinder, for a total of 9,072 cu in (148.66 L). A D.C. generator powered four D37 traction motors, two on each Blomberg B truck. EMD has built all of its major components since 1939. [1] [2]
Identification
Original owners
EMD built 248 F9 locomotives: 92 A units and 156 B units. Nine railroads purchased A units; all but one of these purchased B units. Six railroads purchased B units only. The most significant buyer was the Northern Pacific Railway, which purchased 38 A units and 32 B units. Other significant buyers included the Canadian National Railway (38 B units), the Atchison, Topeka and Santa Fe Railway (18 of each), and the Denver and Rio Grande Western Railroad purchased 2 A units and 4 B units.[3] Locomotives intended for use in Canada were built by General Motors Diesel, EMD's Canadian subsidiary. These included the Canadian National's order,[4] and eight B units for the Canadian Pacific Railway.[5]
