COMBUSTION CHAMBER INJECTION
|Fig. 17-4 A typical combustion chamber injection system.|
8. The water flow sensing unit opens only when the correct pressure difference is obtained between compressor delivery air pressure and water pressure. The system is brought into operation when the engine throttle lever is moved to the take-off position, causing microswitches to operate and select the air supply for the turbine pump. 9. The sensing unit also forms a non-return valve to prevent air pressure feeding back from the discharge jets and provides for the operation of an indicator light to show when water is flowing.