gokeefe wrote:Does Siemens currently build a dual mode AC/Diesel for anyone e? If so what are the specifications?
They bid a Charger-based dual for NYSDOT's Request for Information 4 years ago. The only technical hurdle they cited for making a conventional QSK-95 prime mover coexist with an equally capable DC E-mode within weight limits of the PRIAA specs was the 125 MPH requirement. Siemens said it could comfortably do 110 within weight, but more work was needed before they could achieve 125.
The RFI was of course was before the Charger was an actual shipping product, so they have a much better idea now of their technical tolerances and have had 4 years more R&D on the weight @ 125 issue. Chances are they'll be able to bid it clean at RFP time.
For Bombardier's bid the ALP-45DP sheds some substantial weight replacing AC E-mode with DC, but they're in a hurt on speeds by never achieving their original rating and having to mod those inefficient gensets to make up their performance deficit.