Diesel locomotive Dv12s. In the 21st century series production standard gauge diesel–hydraulic designs include the Voith Gravita, ordered by Deutsche Bahn, and the Vossloh G2000, G1206 and G1700 designs, all manufactured in Germany for freight use. Steam-diesel hybrid locomotives can use steam generated from a boiler or diesel to power a piston engine. The "Cristiani Compressed Steam System" used a diesel engine to power a compressor to drive and recirculate steam produced by a boiler; effectively using steam as the power transmission medium, with the diesel engine being the prime mover The diesel-pneumatic locomotive was of interest in the 1930s because it
Diesel Locomotive Factory, Marhowra Ministry of Railways had received bids from six global firms: Siemens, Alstom, Bombardier, General Electric, CSR Corp and CNR Corp. However, Indian Railways rejected the bid of both Chinese firms (CSR and CNR) for the two giant manufacturing projects in Bihar. In January 2014, the Union Cabinet gave its approval for setting up Electric Locomotive Factory in Madhepura and Diesel Locomotive Factory (DLF) in Marhowra at an approximate cost of and respectively. On November 9, 2015, the Ministry of Railways awarded the contracts for Madhepura project and Marhaura project to Alstom and General Electric respectively in a collective amount of