Atomizing test constant-volume elastomer

Abstract

The invention discloses an atomizing test constant-volume elastomer, which comprises an elastomer main body, an elastomer upper cover, an oil atomizer mounting seat, an oil atomizer, an elastomer sealing plate, quartz glass, a quartz glass flange and an elastomer lower cover. The atomizing test constant-volume elastomer can improve the experiment efficiency of an oil atomizer atomizing characteristic experiment considerably, increase the safety of the oil atomizer atomizing characteristic experiment and enhance the image photographing effect of the atomizing experiment, so that the accuracy of experiment analysis and the experiment quality are improved, the influences of the temperature of the atomizing test constant-volume elastomer on the oil atomizer temperature are reduced, the temperature of the oil atomizer is guaranteed to be equal to the atmosphere temperature, the atomizing characteristics of different oil atomizers can be tested and the applicability of the atomizing test constant-volume elastomer is improved.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and relates to a spray test constant volume projectile, in particular to a spray test constant volume projectile of an engine fuel injector. Background technique [0002] The spray characteristics of the engine injector is one of the important factors affecting the performance of the engine. For high-pressure direct injection engines, the spray characteristics of the injector have a great influence on the engine combustion and emission performance. Therefore, the engine injector The test of spray characteristics is of great significance to the design and development of engine combustion system. [0003] The constant volume projectile is a common device for testing the spray characteristics of engine injectors, and is used to quantitatively study the influence of various parameters on the spray characteristics of engine injectors. Most of the currently designed constant-volume...

AI Technical Summary

Problems solved by technology

Most of the currently designed constant-volume projectiles are static systems, that is, nitrogen gas is filled into the constant-volume projectile before the experiment, and the projectile is airtight during the experiment. To prepare for the next experiment, there will be an interval between the two experiments. The experimental preparation work is repeated back and forth, and the experimental efficiency is low. After the single experiment is over, when the oil-gas mixture is processed, the oil-gas mixture is easily in contact with the air, which greatly improves the efficiency of the experiment. increased risk of experimentation

At the same time, for the currently designed constant-volume projectile, the fuel injector is installed on the constant-volume projectile and directly contacts the metal part. When the nitrogen in the constant-volume projectile is heated above 100°C, due to the spray , and when there is a large difference between the temperature in the constant volume room and the ambient temperature, oil mist will be generated on the quartz glass of the image capture window, affecting image capture, and the temperature of the injector itself will also increase, making the injector itself and Fuel temperature changes, affecting the experimental results

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