FIELD: mechanical engineering; gas-turbine engines.
SUBSTANCE: proposed system has fuel meter in form of metering needle with servopiston, meter control valve, pneumohydraulic converter, hydraulic flow0through chamber with two series-connected throttles and interthrottle chamber connected through throttle with pneumohydraulic converter. Required flowrate is set by tightening spring through mode setter made in form of lever, gear and rod with gear rack. System is furnished also with electrohydraulic converter and position pickup connected with meter. Flow-through chamber throttle is connected with meter, and control valve of meter is connected through spring with mode setter and is hydraulically connected with servopiston and interthrottle chamber. Fuel-feed control low applied when electronic control is switched off is simple, not requiring use of speed governor and its drive. This law is expressed through dependence between ratio of fuel consumption and air pressure in compressor from position of mode setter.
EFFECT: possibility of control of fuel delivery by standby regulator in case of failure of electronic one.
1 dwg
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Authors
Dates
2004-11-27—Published
2003-04-07—Filed