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The Renfe Class 311 is a class of four axle Bo'Bo' diesel electric shunting and light freight locomotives.

Renfe 311
Renfe 311.001 prototype (1986)
Type and origin Power type Diesel-electric Builder 311.0 prototype: M.T.M., Ateinsa, Babcock & Wilcox[1] 311.1: Alstom (Meinfesa), Siemens, Bazán[2] Build date prototype 1985 1989-1991[2] Total produced 61[2]
Specifications Configuration: ​  • UIC Bo'Bo'[1] Gauge 1,668 mm (5 ft 5+21⁄32 in)[1] Wheel diameter 1,100 mm (43.31 in)[2] Length 14.200 m (46 ft 7.1 in)[1] Width 2.900 m (9 ft 6.17 in)[1] Height 4.250 m (13 ft 11.32 in)[1] Loco weight 80 t (79 long tons; 88 short tons)[1] Prime mover MTU 396 B V TC 13[2] Loco brake 311.0 prototype: Vacuum[1] 311.1: Pneumatic, rheostatic[1]
Performance figures Maximum speed 90 km/h (56 mph)[1] Power output 1,065 hp (794 kW)[2] Tractive effort 255 kN (57,000 lbf) @ 7.5 km/h (4.7 mph)[2]
Career Operators Renfe Locale Spain

Background and design

The prototype locomotive 311.001 was designed by M.T.M. (Barcelona), Ateinsa (Madrid) and Babcock & Wilcox (Bilbao); the project was led by the Instituto Nacional de Industria.[note 1]

The prototype locomotive led to an order of 60 units, which were assigned to the subclass 311.1, and numbered 311.101 to 311.160.

The transmission system uses 4 axle hung pinion drive three-phase asynchronous motors powered by a three phase alternator driven by a MTU engine partly license built by Bazán. Siemens supplied Sibas-16 microprocessor engine control systems.[3]

The prototype locomotive was initially painted orange with a white stripe, the series production were all given a red/silver livery; standard for Renfe shunting locomotives. Some units have subsequently received a more recent white/grey Renfe livery. As of 2010 most of the units are operated by Renfe Mercancías, about one third have been assigned to the infrastructure company Adif.[4]

Derivatives

The locomotives were a success for the Spanish engineering industry, and the design formed the basis of a number of locomotive types exported from the Meinfesa factory: the SBB Am 841 (40 units 1994), the GA DE900 locomotives for Mexico, Israel and Egypt (35 units, 1997-2000) and the SNCF Class BB 60000 (175 units, 2004-8).[5]

See also

• Renfe Class 309 and Renfe Class 310: contemporary shunting locomotives ordered a during the same period of modernisation of Renfe's shunter fleet.

Notes

References

Sources

• Arenillas Melendo, Justo : "La Traccion en los ferrocarriles españoles, Editorial Via Libre, Madrid, 2007

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