In a press release on November 9, Cummins (CMI) announced that it would display the new QSG12 50 HZ diesel generator series at the MATELEC show in Madrid, Spain. The show will be held on November 13â16. Cummins will introduce two new modelsâC400D5 and C450D5. These models will be powered by Cumminsâ four-cycle, inline, six-cylinder dual speed engine.