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Fuel supply system and aero-engine with same

A fuel supply system and engine technology, applied in the field of fuel oil supply system and aero-engine control, can solve the problems of poor fuel evaporation, high lubricating oil viscosity, low fuel temperature, etc., so as to improve the success rate of starting and the reliability of work. performance, improvement effect, temperature increase effect

Active Publication Date: 2016-05-25
CHINA AVIATION POWER MACHINE INST
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Problems solved by technology

[0004] The present invention provides a fuel oil supply system and its fuel oil supply system, in order to solve the existing fuel oil supply system when the external environment temperature is too low, there are low fuel oil temperature, poor fuel evaporation effect and lubricating oil viscosity The technical problem of the difficulty in starting the power plant due to large

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  • Fuel supply system and aero-engine with same
  • Fuel supply system and aero-engine with same
  • Fuel supply system and aero-engine with same

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Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0032] refer to figure 1 , the preferred embodiment of the present invention provides a kind of fuel oil supply system, and the fuel oil supply system of this embodiment is used for the auxiliary power unit of aero-engine, and it comprises the oil inlet oil circuit 10 that is used to import fuel oil into engine 20 and is used for engine The fuel oil in 20 is returned to the oil tank 40 to adjust the oil consumption of the fuel return oil circuit 30, the fuel oil in the oil inlet oil circuit 10 is introduced into the engine 20 after the fuel oil radiator 50 exchanges heat with the lubricating oil, and the oil return oil circuit 30 There is a fuel control device 60 for controlling the flow direc...

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Abstract

The invention discloses a fuel supply system and an aero-engine with the same. The fuel supply system comprises a fuel feeding circuit and a fuel return circuit, fuel in the fuel feeding circuit is subjected to heat exchanging with lubricant via a fuel and lubricant radiator and is then introduced into an engine, the fuel return circuit is provided with a fuel control device used to control a flowing direction of return fuel, and the fuel control device comprises: a conversion valve used to divide the fuel in the fuel return circuit into two branches to be output, wherein one branch leads to the fuel incoming circuit, and the other branch leads to a fuel tank; a thermal switch used to sense inlet fuel temperature of the engine to switch indexing of the conversion valve, so that the return fuel is controlled to flow to the fuel feeding circuit when the inlet fuel temperature is lower than a preset threshold. The fuel returned via a fuel return line is mixed with inlet fuel via the fuel feeding circuit when the inlet fuel temperature is lower than the preset threshold, thus increasing the temperature of the fuel, improving fuel evaporation effect and heat exchanging efficiency of the fuel and lubricant radiator, and improving startup success rate and operation reliability of a power unit.

Description

technical field [0001] The invention relates to the field of aero-engine control, in particular to a fuel supply system. In addition, the present invention also relates to an aero-engine comprising the above-mentioned fuel supply system. Background technique [0002] In the control system of the aero-engine auxiliary power unit, there is a scheme to control the fuel consumption by controlling the amount of fuel returned. The inlet flow of the auxiliary power unit is supplied by a quantitative fuel pump, and the return flow is controlled by an electronic controller. Servo valve opening to achieve, fuel consumption = constant fuel supply - oil return flow. Among them, the incoming oil passes through the fuel pump and then enters the fuel oil radiator for heat exchange with the lubricating oil before being supplied to the engine, and the returned oil is returned to the fuel tank under the control of the fuel oil supply system. [0003] Although in the existing control system,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/22F02C7/232
CPCF02C7/22F02C7/232
Inventor 章辉卢圣涛邓文革吴雪蓓邓佳
Owner CHINA AVIATION POWER MACHINE INST
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