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Fuel classification device, engine combustion chamber and aero-engine

A classification device and engine technology, which is applied to combustion engines, internal combustion piston engines, combustion chambers, etc., can solve the problems of large pollution emissions, achieve good outlet temperature distribution quality, control emission levels, and evenly distribute the fuel space.

Active Publication Date: 2020-07-17
AECC COMML AIRCRAFT ENGINE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of fuel classification technology can avoid oscillation combustion, but the pollution emission is relatively large

Method used

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  • Fuel classification device, engine combustion chamber and aero-engine
  • Fuel classification device, engine combustion chamber and aero-engine
  • Fuel classification device, engine combustion chamber and aero-engine

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Embodiment Construction

[0039] The present invention will be described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless specifically stated otherwise. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features which are considered to be preferred or advantageous.

[0040] Terms such as "first" and "second" appearing in the present invention are only for convenience of description, to distinguish different components with the same name, and do not indicate a sequence or a primary and secondary relationship.

[0041] In the description of the present invention, orientations or positional relationships indicated by "upper", "lower", "top", "bottom", "front", "rear", "inner" and "outer" are used based on the attached The orientation or positional relationship shown in the figure is only for the convenience of ...

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Abstract

The invention relates to a fuel classification device, an engine combustion chamber and an aero-engine. The fuel classification device comprises a pre-combustion stage provided with a pre-combustion stage oil channel (2) for supplying oil into a flame tube and a two main combustion stage provided with at least two main combustion stage oil channels for supplying oil to a flame tube. When an engineworks in the first state, the pre-combustion stage oil channel (2) and all the main combustion stage oil channels are opened for oil supply. When oscillating combustion occurs in the first state, theoil supply ratio of the main combustion stage oil channels is adjusted while the total oil supply of the main combustion stage oil channels are kept unchanged. According to the fuel classification device, local combustion in the flame tube can occur under the condition of rich oil by independently adjusting the fuel distribution ratio in the main combustion stage, so that oscillating combustion is prevented. Besides, spatial distribution of fuel in the flame tube can be uniform, the emission level is controlled, and thus, better outlet temperature distribution quality is maintained.

Description

technical field [0001] The invention relates to the technical field of low emission of aero-engines, in particular to a fuel classification device, an engine combustion chamber and an aero-engine. Background technique [0002] With the increasingly stringent environmental protection requirements, the pollution emission restrictions of civil aeroengines are becoming more and more stringent. Contemporary civil aeroengines widely adopt low-emission combustion technology to meet low emission requirements. Among low-emission combustion technologies, lean-oil low-emission combustion technology has the greatest potential in reducing emissions, and is a very promising low-emission technology. However, the lean-lean low-emission combustion process is inevitably accompanied by the problem of oscillating combustion, which is very likely to produce harmful consequences that affect the safety of the combustion chamber. [0003] Oscillatory combustion is affected by factors such as the g...

Claims

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Application Information

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IPC IPC(8): F02B19/00F02B23/00F23R3/28
CPCF02B19/00F02B23/00F23R3/28Y02T10/12
Inventor 何沛徐榕陈伟
Owner AECC COMML AIRCRAFT ENGINE CO LTD
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