Fuel oil jetting system of heavy oil engine and aircraft engine

Abstract

The invention discloses a fuel oil jetting system of a heavy oil engine and an aircraft engine. The fuel oil jetting system comprises a compressed air system and a fuel oil jetting system, wherein thecompressed air system comprises an air compressor and an air supplying pipeline; the fuel oil jetting assembly comprises a fuel oil nozzle, a premixing chamber and an oil-gel mixing nozzle; an oil jetting port of the fuel oil nozzle and a compressed air inlet which communicates with the air supplying pipeline are formed in the premixing chamber; the oil-gas mixing nozzle communicates the premixing chamber and is used for feeding atomized mixed oil which is formed through fuel oil and compressed air in the premixing chamber into a combustion chamber of the engine. According to the fuel oil jetting system of the heavy oil engine, a fuel jetting structure assisting air atomizing and premixing is mounted on a cylinder head of the engine, so that heavy oil can be fully atomized, and uniform combustion mixing gas can be obtained by mixing; and moreover, the combustion can be efficiently carried out; the dynamic property, the economic property and the emission property of the heavy oil applied to the engine can be ensured; and the energy conservation, the environmental protection and low cost are achieved after the heavy oil is applied to the engine.

Description

technical field [0001] The invention relates to an engine and its application, in particular to a fuel injection system for a heavy oil engine and an aeroengine. Background technique [0002] As the fuel for the engine, heavy oil will become the power trend of small and medium-sized UAVs; however, heavy oil has high viscosity and poor low-temperature fluidity, resulting in a worse atomization effect than ordinary light oil, affecting the combustion effect, and even making it difficult to start the engine and Emissions are not up to standard. [0003] In the prior art, in order to ensure that the heavy fuel oil engine can have good atomization and start-up, there are fuel supply methods such as carburetor + auxiliary preheating technology, mechanical injection (fuel direct injection), electronically controlled fuel injection, etc.; however, structurally It is still the original EFI method, which cannot achieve reliable atomization of heavy oil and cannot organize efficient c...

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Problems solved by technology

[0002] As the fuel for the engine, heavy oil will become the power trend of small and medium-sized UAVs; however, heavy oil has high viscosity and poor low-temperature fluidity, resulting in a worse atomization effect than ordinary light oil, affecting the combustion effect, and even making it difficult to start the engine and Emissions are not up to standard

[0003] In the prior art, in order to ensure that the heavy fuel oil engine can have good atomization and start-up, there are fuel supply methods such as carburetor + auxiliary preheating technology, mechanical injection (fuel direct injection), electronically controlled fuel injection, etc.; however, structurally It is still the original EFI method, which cannot achieve reliable atomization of heavy oil and cannot organize efficient combustion of mixed fuels, which makes the power, economy and emission of heavy oil used in engines unable to achieve the desired effect, thus making heavy oil The application cannot be popularized on a large scale

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