FIELD: aircraft engineering, engines and pumps.
SUBSTANCE: invention relates to pumps feeding fuel into aircraft engine. Proposed system comprises low-pressure pump with its inlet communicates with fuel source, starting pump, flow switch-over slide valve connected with engine operating conditions controller and high-pressure pump. Plunger starting pump inlet communicates with low-pressure pump outlet and high-pressure pump inlet branch pipe. Plunger pump outlet communicates with one of the flow switch-over slide valve inlets, its other outlet being communicated with high-pressure pump outlet. Flow switch-over slide valve outlet is connected with engine operating conditions controller which incorporates control channels. One of the latter is connected with the slide valve drive, the other one being connected with high-pressure pump.
EFFECT: reduced system temperature, longer life and higher reliability.
2 dwg
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