OREANDA-NEWS.  Railways have tested a kit for partial running of DEMU (Diesel Electric Multiple Unit) engines on CNG. One such DEMU DPC has been developed and running at Shakurbasti diesel shed. One DEMU DPC is already in commercial service with CNG engine.

The ratio of cost variation between CNG and diesel run engines per 100 kms i.e. saving in using CNG with 20 per cent diesel substitution as compared to 100 per cent diesel operations in a DPC at present is 13.4 per cent approximately.