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Fuel classification device, engine combustion chamber and aircraft engine

A grading device and engine technology, applied in combustion engines, internal combustion piston engines, combustion chambers, etc., can solve problems such as large pollution emissions, achieve good outlet temperature distribution quality, control emission levels, and uniform fuel space distribution.

Active Publication Date: 2021-05-04
AECC COMML AIRCRAFT ENGINE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 aircraft engine
  • Fuel classification device, engine combustion chamber and aircraft engine
  • Fuel classification device, engine combustion chamber and aircraft 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, wherein the fuel classification device comprises: a pre-combustion stage, which is provided with a pre-combustion stage oil passage (2) for supplying fuel to the flame tube; and a main combustion stage stage, with at least two main fuel oil circuits for supplying oil to the flame tube; wherein, when the engine is working in the first state, the pre-combustion stage oil circuit (2) and each main fuel stage oil circuit are open Fuel supply: when oscillating combustion occurs in the first state, the fuel supply ratio of each main fuel stage oil circuit is adjusted while keeping the total fuel supply volume of each main fuel stage oil circuit unchanged. This kind of fuel oil classification device can make the local combustion in the flame tube occur under the rich fuel condition by separately adjusting the fuel oil distribution ratio inside the main combustion stage, so as to avoid oscillation combustion; at the same time, it can make the fuel space distribution in the flame tube more uniform It is beneficial to control the discharge level, so as to maintain a good outlet temperature distribution quality.

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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Patent Type & Authority Patents(China)
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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