Combustion chamber for engine

Abstract

The invention provides a combustion chamber for an engine. The combustion chamber for an engine is characterized in that a combustion cavity is formed in a flame tube, the front portion and the rear portion of the flame tube are provided with a first evaporation tube and a second evaporation tube respectively, wherein the first evaporation tube and the second evaporation tube are used for pre-mixing evaporation fuel and spraying the fuel to the combustion cavity; one end opening of the first evaporation tube is located in the combustion cavity, and the other end opening penetrates out of the front end of the flame tube and is in communication with a fuel main tube; and one end opening of the second evaporation tube is located in the combustion cavity, and the other end opening penetrates out of the rear part of the flame tube and is in communication with the fuel main tube. According to the combustion chamber for the engine, the first evaporation tube is arranged at the front end, thesecond evaporation tube is arranged at the rear portion, and a brand new combined evaporation tube combustion structure is provided; and the supply pressure of the structure fuel main tube is low, thespace classification of fuel combustion is realized, the temperature of the combustion area is effectively reduced, the purpose of reducing NOx emission is achieved, the flame stability of the head combustion chamber under a small working condition is improved, and the flameout boundary of the combustion cavity is expanded.

Description

technical field [0001] The invention belongs to the technical field of engines, in particular to a combustion chamber for an engine. Background technique [0002] Turbojet engine is a kind of turbine engine, which is characterized by completely relying on gas to generate thrust, and is usually used as the power of high-speed aircraft. There are two types of turbojet engines: centrifugal and axial. The turbojet engine works according to the "working cycle" mode. It sucks in air from the atmosphere, and the air gets energy and momentum after being compressed and heated, and then the air with energy and momentum is discharged from the propulsion nozzle. When spraying out of the engine, it drives the compressor and the turbine to continue to rotate at the same time, maintaining the working cycle. [0003] For example, the invention patent with the application announcement number of CN1743735A discloses an evaporating tube type micro-engine combustion chamber, which is composed...

AI Technical Summary

Problems solved by technology

Therefore, under large working conditions, the fuel is concentrated, the temperature of the combustion zone is high, and the low pollution requirements cannot be met, while the fuel-gas ratio is low, the flame temperature is low, the combustion zone is insufficient, and even the flame is turned off under small working conditions.

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