Some Engines are types of internal combustion engines used in various applications. Turbos (6 letters) are turbochargers that use exhaust gases to increase the power output of an engine. Diesels (7 letters) are compression-ignition engines that use fuel injected directly into the combustion chamber. VFS (3 letters) are variable frequency starters, which are used to start large engines. VSIXES (6 letters) are variable speed industrial engines that can be used for a variety of applications. Turbines (8 letters) are rotary engines that use a continuous flow of fluid to generate power.