Dilithium crystal converter assembly
The dilithium crystal converter assembly was the engineering component aboard  starships responsible for the primary energy-production activities.

In 2268, the 's dilithium crystal converter assembly was sabotaged by Kryton, an Elasian working for the Klingons. Montgomery Scott discovered that the converter assembly had been completely fused as a result of Kryton's actions, making any use of warp power impossible until replacement dilithium crystals could be found. ()

See also
 Converter assembly

de:Dilithiumkonvertersystem
fr:Système de conversion des cristaux de dilithium
Warp
Energy technology