contamination can be removed while the engine is running by water washing. A small spray of clean, fresh water is injected into the air stream at the compressor inlet: water droplets are drawn through and scour the surfaces clean. Can not use in trunk piston engines
_fouling อุดตัน of the exhaust system and turbine is the buildup of the product from combustion of fuel, used cylinder oil and its additives, ash and any other noncombustibles in the fuel. These will create hard deposits which interfere with gas flow, may cause local overheating, reduce turbine effiency and even destroy balance of the rotor: water washing may also be used to clean the gas side of the system. A small water jetspray into the gas flow.