Class DE11
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JR Freight DE11 2001 in January 2011
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| Type and origin | |
|---|---|
| Power type | Diesel-hydraulic |
| Builder | Kawasaki Heavy Industries, Nippon Sharyo |
| Build date | 1968–1979 |
| Total produced | 116 |
| Specifications | |
|---|---|
| Configuration: |
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| • UIC | C-B |
| Gauge | 1,067 mm (3 ft 6 in) |
| Length |
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| Width | 2,950 mm (9 ft 8 in) |
| Height | 3,965 mm (13 ft 0.1 in) |
| Axle load | 14 t |
| Loco weight | 70 t |
| Fuel type | Diesel |
| Fuel capacity | 2,500 l |
| Engine type | DML61ZB |
| Transmission | Hydraulic |
| MU working | N/A |
| Performance figures | |
|---|---|
| Maximum speed | 85 km/h (55 mph) |
| Power output |
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| Tractive effort | 21,000 kgf (210,000 N; 46,000 lbf) |
| Career | |
|---|---|
| Operators |
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| Number in class | 10 (as of 1 April 2016[update]) |
| Disposition | In service |
The Class DE11 (DE11形) is a five-axle C-B wheel arrangement diesel-hydraulic shunting locomotive type operated in Japan since 1968. A total of 116 locomotives were built between 1968 and 1979, and as of 1 April 2016[update], 10 locomotives remain in service, operated by East Japan Railway Company (JR East) and Japan Freight Railway Company (JR Freight).
A total of 116 locomotives were built between 1968 and 1979, divided into the following sub-classes.
The Class DE11 was developed from the Class DE10 locomotive design, with the train-heating steam generator and multiple-working equipment removed and replaced with concrete ballast weight to increase the axle load from 13 t to 14 t to improve adhesion for use in shunting work.
65 locomotives were built between 1968 and 1970.
46 locomotives were built between 1970 and 1974 with their engines uprated from 1,250 hp (930 kW) to 1,350 hp (1,010 kW).
Locomotives DE11 1030, 1032, 1035, and 1046 were fitted with "SLC" (Shunting Locomotive Control) equipment to allow remote control at Musashino Marshalling Yard in Saitama Prefecture.
JR Freight DE11 1029 in July 2013
JR East DE11 1045 in February 2005
One locomotive, numbered DE11 1901, was built in 1975, experimentally incorporating a number of features to reduce external noise for use in yards close to residential areas. Features included additional sound-insulating around the engine compartment and a noise reduction unit on the exhaust chimney.
DE11 1901 was withdrawn in 2000.
Four Class DE11-2000 locomotives, numbered DE11 2001 to 2004 were built in 1979, incorporating some of the noise-reduction features tried out on DE11 1901. These locomotives also feature skirting to reduce noise. The locomotive length was increased from 14,150 mm (46 ft 5 in) to 16,650 mm (54 ft 8 in).
JR Freight DE11 2001 in April 2003, still in original JNR livery
JR Freight DE11 2001 in JR Freight livery in April 2011 showing the noise-reduction skirting
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Wikipedia