Fuel supply system of aircraft engine taking LNG (Liquefied Natural Gas) as fuel and working mode thereof

A fuel supply system and aero-engine technology, applied in turbine/propulsion fuel delivery systems, charging systems, engine components, etc., to achieve the effects of efficient utilization, reduced transportation costs, and improved reliability

Inactive Publication Date: 2015-09-30
SHENYANG AEROSPACE UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the complexity of the fuel supply, control system and combustion system when the aero-engine

Method used

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  • Fuel supply system of aircraft engine taking LNG (Liquefied Natural Gas) as fuel and working mode thereof
  • Fuel supply system of aircraft engine taking LNG (Liquefied Natural Gas) as fuel and working mode thereof
  • Fuel supply system of aircraft engine taking LNG (Liquefied Natural Gas) as fuel and working mode thereof

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with drawings and implementation.

[0025] Such as figure 1 Shown is a schematic diagram of an aircraft with 4 engines running on 2 fuels. The aircraft system of the present embodiment includes a fuselage 2 and a wing 1 connected to the fuselage 2. The aircraft system generates thrust through the engine 3 of the power system. The power system of the present embodiment includes 4 engines 3 and is positioned on the wing 1. In other embodiments, three engines 3 can also be used, two of which are located on the wing 1 , one is located on the tail 6 , or all three engines 3 are located on the tail 6 .

[0026] There are two fuel storage systems on the aircraft to provide fuel for the engine 3, the fuel tank 4 is located in the wing 1 to store conventional aviation kerosene, and the LNG storage tank is located on the fuselage 2 close to the connection between the wing 1 and the fuselage 2. In other embodim...

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Abstract

The invention discloses a fuel supply system of an aircraft engine taking an LNG (Liquefied Natural Gas) as a fuel and a working mode thereof. The fuel supply system comprises an LNG storage tank, a safe valve, a check valve, a buffer tank, a machinery pressure regulating valve, an electrically-controlled throttle valve, a gasification device, a pressure sensor, a PID controller, a low-temperature pump, a flow controller, a fuel oil branch pipe, a gas fuel nozzle and a combustor. According to the working mode of an engine, when an aircraft is in different flying states, by virtue of changing a used engine, the change of thrust needed by the aircraft is realized. The fuel supply system has the beneficial effects that by virtue of the harmonizing of the gasification device and the low-temperature pump, the demand on equipment number is lowered, the total mass of a fuel system and the system complexity are reduced, meanwhile the control system complexity is reduced, and the demand of the engine for fuel flow can be met; according to the different thrust output for the power system, an alternate working mode and a simultaneous working mode, which are different, of the engine are adopted according to different thrusts output by a power system, so that the transportation cost is lowered on the premise of ensuring that the needed thrust is provided.

Description

technical field [0001] The invention relates to the technical field of aircraft engines and fuel supply, in particular to a fuel supply system and working method applied to LNG-fueled aircraft engines. Background technique [0002] In order to meet the requirements of more environmentally friendly and economical aero-engines in the future, major countries in the aviation industry have conducted extensive research on controlling aero-engine pollutant emissions and reducing aviation fuel costs as key topics. Reducing the cost of aviation fuel and reducing the excessive reliance on petroleum-based aviation fuel have become two major problems that military aviation and civil aviation transportation industries need to solve urgently. In order to reduce the cost of aviation fuel and reduce the dependence on aviation kerosene, in the next 30 to 50 years, aviation fuel will be dominated by "ready-to-use" aviation alternative fuels that will not affect aircraft and engine hardware. ...

Claims

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Application Information

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IPC IPC(8): F02C7/22F02C3/22F02C9/00F02C6/20
Inventor 刘爱虢陈保东王成军曾文马洪安
Owner SHENYANG AEROSPACE UNIVERSITY
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