There were many types of E-units. They were built by the Electro-Motive Corporation, EMC. Later the Electro-Motive Division of General Motors, EMD. All had 2-stroke (The Winton engine was 4-stroke), 12-cylinder V-type diesel engines, 2 in each locomotive. The diesel engine turned an electric generator providing electricity to the four traction motors, one for each powered axle. That way the diesel engine could run at optimum speed, at all locomotive speeds.
The bogies were of the A1A-type, with one unpowered axle in the middle, just to carry the weight of the locomotive.
All E-units were used to pull passenger trains and were equipped with steam generators to provide heating and power to passenger cars.
|
Model |
Hp |
Engine (2 of them) |
Produced |
Units built |
|
EA |
1800 |
Winton 201-A |
1937-1938 |
6 |
|
EB |
1800 |
Winton 201-A |
1937-1938 |
6 |
|
E1A |
1800 |
Winton 201-A |
1937-1938 |
8 |
|
E1B |
1800 |
Winton 201-A |
1937-1938 |
3 |
|
E2A |
1800 |
Winton 201-A |
1937 |
2 |
|
E2B |
1800 |
Winton 201-A |
1937 |
4 |
|
E3A |
2000 |
567 |
1939-1940 |
16 |
|
E3B |
2000 |
567 |
1939-1940 |
2 |
|
E4A |
2000 |
567 |
1938-1939 |
14 |
|
E4B |
2000 |
567 |
1938-1939 |
5 |
|
E5A |
2000 |
567 |
1940-1941 |
11 |
|
E5B |
2000 |
567 |
1940 |
5 |
|
E6A |
2000 |
567 |
1939-1942 |
92 |
|
E6B |
2000 |
567 |
1940-1942 |
26 |
|
E7A |
2000 |
567A |
1945-1949 |
428 |
|
E7B |
2000 |
567A |
1945-1949 |
82 |
|
E8A |
2250 |
567B |
1949-1953 |
421 |
|
E8B |
2250 |
567B |
1949-1953 |
39 |
|
E9A |
2400 |
567C |
1954-1963 |
100 |
|
E9B |
2400 |
567C |
1954-1963 |
44 |
The B-units were cabless units, called Booster-units. They were controlled from the cab of an A-unit. Their purpose was of course to make a more powerful formation of locomotives without having to pay for a complete cab, with all expensive equipment.
The types EA, E1A, E3A, E5A and E6A had slanted nose, E2A a kind of rounded nose and E7A, E8A nad E9A had the same bulldog nose as the F-units.
The second diesel spotter's guide
by Jerry A. Pinkepank
ISBN-0-89024-026-4 ,
Kalmbach Books, USA
About many types of diesels
Diesel Locomotives: The first 50 years. A guide to diesels built
before 1972
by Louis A. Marre
ISBN-0-89024-258-5,
Kalmbach Books, USA
About many types of diesels
Trains magazine. (Not much about E-units in recent years)
Classic Trains Magazine.
Model Railroader Magazine. (From time to time there are articles about painting E-unit models with information about the real thing.)
Vintage Rails magazine. (No longer published, back issues available)