A Method for Optimizing the Mixing Quality of Oil and Gas in a Diesel Internal Combustion Engine

A technology of diesel internal combustion engine, oil and gas mixing, applied in the direction of internal combustion piston engine, combustion engine, mechanical equipment, etc., can solve the problem of unsatisfactory, achieve the effect of improving combustion efficiency and emission potential, and improving performance

Active Publication Date: 2020-01-31
SHENYANG AEROSPACE UNIVERSITY
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Problems solved by technology

For how to further optimize the quality of oil-gas mixing, many technicians are also looking for feasible solutions, but so far, no satisfactory results have been obtained

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  • A Method for Optimizing the Mixing Quality of Oil and Gas in a Diesel Internal Combustion Engine

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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] A method for optimizing the oil-gas mixing quality of a diesel internal combustion engine, including three optimization aspects, specifically:

[0015] The first optimization aspect: adjust the injection direction of the diesel spray, so that an angle greater than 90° is formed between the injection direction of the diesel spray and the incoming flow direction of the air vortex;

[0016] The second optimization aspect: based on the first optimization aspect, adjust the number of nozzle holes on the diesel nozzle, and the number of nozzle holes should be at least two, and different nozzle holes have different apertures; the larger the diameter of the nozzle holes, the more diesel spray The greater the mass flow rate; the smaller the nozzle hole diameter, the smaller the mass flow rate of diesel spray;

[0017] The third optimiz...

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Abstract

The invention relates to an oil-gas mixture quality optimization method of a diesel oil internal combustion engine. The oil-gas mixture quality optimization method of the diesel oil internal combustion engine comprises three optimization steps of (1) adjusting a spraying direction of diesel oil spray, and forming an included angle larger than 90 degrees between the spraying direction of the dieseloil spray and a flowing direction of an air eddy; (2) on the basis of the step (1), adjusting the number of spray holes on a diesel oil nozzle, wherein at least two spray holes are formed, and different hole diameters exist between different spray holes; the larger the hole diameter of the spray holes is, the larger a mass flow of the diesel oil spray is; and the smaller the hole diameter of thespray holes is, the smaller the mass flow of the diesel oil spray is; and (3) on the basis of the two steps, determining the mass flow and eddy strength distribution of the air eddy, colliding and mixing the air eddy with the small mass flow and low eddy strength and the diesel oil spray with the small mass flow, and colliding and mixing the air eddy with the large mass flow and high eddy strengthand the diesel oil spray with the large mass flow. According to the optimization method provided by the invention, more ideal oil-gas mixture quality can be obtained in different positions in a cylinder.

Description

technical field [0001] The invention belongs to the technical field of diesel internal combustion engines, in particular to a method for optimizing the oil-gas mixing quality of diesel internal combustion engines. Background technique [0002] The advantages of diesel internal combustion engines in terms of energy saving and carbon dioxide emissions cannot be replaced by all thermal internal combustion engines including gasoline internal combustion engines. When the diesel internal combustion engine is working, the air enters the cylinder liner in the form of vortex and completes the compression in the cylinder liner. The temperature can reach 500 ℃ ~ 700 ℃, and the pressure can reach 40 ~ 50 atmospheres. When the piston is close to the top dead center, the diesel is injected Spray, diesel spray is mixed with high-temperature and high-pressure air to form a mixed gas. At this time, the mixed gas burns by itself and expands violently, thereby generating explosive force, there...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B31/00F02M61/18
CPCF02B31/00F02M61/1806F02M61/1846Y02T10/12
Inventor 陈雷张维杨聪封超胡国星曾文刘凯刘宇
Owner SHENYANG AEROSPACE UNIVERSITY
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