Liquid drop wall hitting experiment device and method

An experimental device and droplet technology, applied in the direction of measuring devices, instruments, internal combustion engine testing, etc., can solve the problems such as the internal working conditions of the engine are far apart, and achieve the effects of low cost, timely feedback, and simple structure

Inactive Publication Date: 2017-07-28
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
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Problems solved by technology

[0003] The liquid bumping experiment in the prior art generally is to use the liquid film on the test rig to hit the droplet, rather than directly hitting the test rig plane, and the test rig will not be heated, which leads to the difference between the experimental model and the real engine. The internal working conditions are quite different

Method used

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  • Liquid drop wall hitting experiment device and method
  • Liquid drop wall hitting experiment device and method

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Embodiment Construction

[0035] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0036] First of all, the present invention provides a droplet collision experiment device, which includes: a droplet injection system, a heating system, a visualization system and a signal control system, the heating system includes a tilt table 9 that can change the tilt angle, and the tilt table 9 Place the constant temperature heating platform 7 that can change the heating temperature.

[0037] The droplet injection system includes a bracket 1 supporting the droplet injection system, a stepping motor of the syringe pump set on the bracket 1, a syringe stand driven by the stepping motor of the syringe pump, and a replaceable syringe 3 installed on the syringe stand .

[0038] The dripping of the syringe 3 is controlled by driving the syringe stand through the stepping motor of the syringe pump; the droplet size is controlled by changing the diameter of ...

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Abstract

The invention discloses a liquid drop wall hitting experiment device and a method. The device comprises a liquid drop injection system, a heating system, a visualized system and a signal control system. The experiment device and the method can effectively control the factors influencing the wall hitting of the liquid drop such as the size, the type, the wall hitting angle and the wall surface temperature so as to probe the influence of the change of the single factors on the liquid drop wall hitting, to conveniently explore the mechanism for liquid drop wall hitting and to search the method to increase the economy of the motor and suppress the super explosion.

Description

technical field [0001] The invention relates to a device and a method for a droplet collision experiment. Background technique [0002] For in-cylinder direct injection engines, with the development of small structure, high supercharging and high injection pressure, the fuel is easy to hit and adhere to the cylinder wall and piston wall to form a wall oil film due to the limited evaporation time, etc. Cause real fuel loss and reduce engine economy. At the same time, because the amount of oil film evaporation in this cycle is very small, it will also affect the formation of the mixture gas in the subsequent working cycle of the engine. With the continuous accumulation of the wall oil film, a fuel-rich area will be formed locally, resulting in a significant increase in the emission of soot particles and the formation of carbon deposits. Carbon deposits are equivalent to hot spots one by one. When the temperature in the cylinder is high, it is easy to spontaneously ignite the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/04
CPCG01M15/042
Inventor 刘福水岑春泽吴晗郝树新李佳峰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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