original_query: What is the prime mover of the T-90 tank?
query: What is the prime mover of the T-90 tank?
answer: The T-90 tank's prime mover is the V-92S diesel engine, built by ChTZ.  Different models use various engines, including the V-84MS, uprated engines, and engines made by Uralvagonzavod and delivered by Chelyabinsk Tractor Plant.