What does EMD stand for in locomotives?
Electro Motive Diesel Inc., (EMD) EMD designs, manufactures and sells diesel-electric locomotives for all commercial railroad applications and has sold its products in more than 70 countries worldwide.
What does EMD mean in trains?
Electro-Motive Diesel
Progress Rail Locomotives, doing business as Electro-Motive Diesel (EMD) is an American manufacturer of diesel-electric locomotives, locomotive products and diesel engines for the rail industry. The company is owned by Caterpillar through its subsidiary Progress Rail.
What does SD stand for EMD?
When EMD introduced its first six-motor locomotive in 1952, it designated it as the SD7; and the “SD” signified “special duty”, which referred primarily to the fact that the six motors made it better suited than four-motor units for low-speed heavy-tonnage assignments.
How can you tell the difference between an EMD and a GE locomotive?
EMD trucks are distinctly different from GE trucks. GE trucks on late model units use a large cast frame, with twin springs for each axle. EMD trucks do not sport the springs as visibly as the GE units’ do. Passenger engines are a whole ‘nother story, that to come soon.
How does an EMD locomotive work?
The ignition of diesel fuel pushes pistons connected to an electric generator. The resulting electricity powers motors connected to the wheels of the locomotive. A “diesel” internal combustion engine uses the heat generated from the compression of air during the upward cycles of the stroke to ignite the fuel.
What is a SD locomotive?
The Electro-Motive Division’s (EMD) SD7 (“SD” stood for Special Duty) was essentially the very same thing as a GP7 except that it sported a C-C truck arrangement as opposed to the Geep’s B-B setup (meaning the SD had six axles instead of four).
What does SD stand for in locomotive?
The SD9 was the second model of EMD’s SD (special duty) line of locomotives, following the SD7. The additional axles in SD series locomotives provide more tractive effort and more even distribution of locomotive weight compared to the four axle GP series locomotives.
What is tender EMD?
EMD stands for Earnest Money Deposit. It is taken by the organization to ensure that only serious bidders participate in the tender. This is a refundable deposit which is sought in the form of fixed deposit Receipt/crossed Bank Draft/Irrevocable Bank Guarantee.
Why is a train called a locomotive?
Etymology. The word locomotive originates from the Latin loco – “from a place”, ablative of locus “place”, and the Medieval Latin motivus, “causing motion”, and is a shortened form of the term locomotive engine, which was first used in 1814 to distinguish between self-propelled and stationary steam engines.
Is the EMD SD7 the same as the SD9?
The EMD SD9, also referred to as a ” Cadillac ” for the smooth, soft ride, was the builder’s second model in its six-axle series and looked virtually identical to the SD7.
Why was the EMD SD9 called a Cadillac?
The last phase of construction had a carbody similar to the SD18 and SD24, and used two 48-inch (1,219 mm) cooling fans instead of four 36-inch (914 mm) cooling fans. Because of their refinements over the SD7 model, SD9’s, especially on the Southern Pacific and Northwestern Pacific, were frequently referred to as “Cadillacs.”
When was the first EMD SD9 locomotive made?
A trio of Duluth, Missabe & Iron Range SD9’s are seen here at Hoyt Lakes, Minnesota, circa 1960’s. Thomas Hoff photo. The EMD SD9 began production in early 1954, soon after the SD7 line was closed.
What does the s stand for in EMD?
The “S” designation originally stood for s ix hundred horsepower and the “N” designation for n ine hundred horsepower, although they were used for the more general designation of smaller and larger engine models after the more powerful 567 model engines replaced the Winton engines.