Indirect effect type fuel metering device and metering method thereof

A metering device and fuel oil technology, which is applied in the direction of volume/mass flow generated by mechanical effects, fluid flow detection by measuring pressure difference, etc., can solve problems such as uncertain pressure at the inlet and outlet of fuel metering devices, and achieve simple structure and high opening stroke Small, high-precision control effect

Pending Publication Date: 2017-08-18
西安成立航空制造有限公司
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under such circumstances, the inlet and outlet pressures

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Indirect effect type fuel metering device and metering method thereof
  • Indirect effect type fuel metering device and metering method thereof
  • Indirect effect type fuel metering device and metering method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0030] see Figure 1-5 , an indirect-acting fuel metering device, including a pipeline delivery system 1, a high-temperature oval gear flowmeter system 2, an equivalent valve metering system 3 and an indirect equal-pressure valve control system 4.

[0031] The pipeline delivery system 1 is a circular pipe connected with various systems by various joints.

[0032] The pipeline transportation system 1 includes No. 1 pipe 111, No. 2 pipe 112, No. 3 pipe 113, No. 4 pipe 114, No. 5 pipe 115, No. 6 pipe 116, No. 7 pipe 117, No. 8 pipe 118, No. 9 pipe Pipe 119, No. 10 pipe 1110, No. 11 pipe 1111, No. 12 pipe 1112, No. 13 pipe 1113, No. 14 pipe 1114, No. 15 pipe 1115, No. 16 pipe 1116, No. 17 pipe 1117, No. 18 pipe 1118 and No. 19 pipe 1119.

[0033] The high-temperature oval gear flowmeter system 2 includes a joint at both ends 5, a casing 6, two ellip...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an indirect acting fuel metering device, which comprises a pipeline delivery system, a high temperature oval gear flowmeter system, an equivalent valve metering system and an indirect equal pressure differential valve control system. The invention has simple structure, small opening stroke, effectively reduces steady-state error, and is an indirect-acting fuel metering device with high reliability; in addition, the high-temperature oval gear flowmeter system is adopted, and the control precision is high, which is not affected by external factors. Second, the spherical equivalent valve metering system is matched with the indirect equal pressure valve control system to control the oil pressure and flow of the fuel; at the same time, the fuel flow control mainly relies on the differential pressure valve to control the process of the main piston, thereby changing the oil inlet. The input flow rate of the metering valve can stabilize the pressure difference before and after the metering valve. In this way, the opening stroke of the pressure difference valve is small, which can effectively reduce the steady-state error. It can be widely used in aero-engines that require high precision.

Description

technical field [0001] The invention relates to the technical test field of an aero-engine fuel injection system, in particular to an indirect-acting fuel metering device and a metering method thereof. Background technique [0002] At present, in the field of aviation, aero-engines are generally very expensive, and research on aero-engine fuel metering devices has become a current technical improvement issue. The continuous development of modern aero-engines puts forward higher requirements on the control performance of the engines. The increase of control functions and the improvement of control precision make the requirements for the control system higher and higher. Aircraft engines often work at the margin of safety. If the fuel flow cannot be precisely controlled, the working state of the engine may exceed the safety margin, resulting in serious consequences of engine damage or even aircraft crash. In general, it is relatively easy to control the fuel flow of the engi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01F1/36
CPCG01F1/36
Inventor 景永平姬宁宁张永郝晓波王鹏张晓明
Owner 西安成立航空制造有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap