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Tracer agent spraying system applied for visual engine test

A technology of injection system and tracer, which is applied in the direction of engine testing, engine components, machine/engine, etc., can solve the problems of large gaps and errors, and the inability to fully and effectively calibrate the engine measurement objects, so as to achieve optimal mixing and save experiments The effect of prep time, good dispersion and proportioning effect

Active Publication Date: 2015-04-01
JIANGSU UNIV
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AI Technical Summary

Problems solved by technology

[0006]3) The traditional LIF method to measure the gas mixture concentration is often calibrated in a pressure vessel, such as a constant volume incendiary bomb, but there is a gap between the calibration environment and the actual situation in the engine cylinder big error
[0008] 5) In conventional measurement, the tracer is generally mixed with fuel for injection measurement and calibration, but limited to the projection angle of the laser and the limitation of the measurement range, it cannot be fully effective Calibration of measurement objects within the engine

Method used

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  • Tracer agent spraying system applied for visual engine test
  • Tracer agent spraying system applied for visual engine test
  • Tracer agent spraying system applied for visual engine test

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Embodiment Construction

[0020] (1) Use conventional 3-pentanone with a volume fraction of 10% (Scheme 1), or acetone with a volume fraction of 10% (Scheme 2) and 3-hexanone with a volume fraction of 9% and a volume fraction of 1% 3-Pentanone was mixed in a ratio of 4:1 by volume (Scheme 3) in a tracer proportioning scheme separately placed in the tracer injection valve.

[0021] (2) Use commonly used isooctane or n-pentane with weak fluorescent effect as an alternative fuel, control it through the injection system, place it in the fuel injector, turn on the laser, and adjust the angle to 15° to the axis of the engine cylinder head 65°.

[0022] (3) The piston moves from the top dead center to the bottom dead center driven by the crankshaft; at this time, the intake valve opens, the exhaust valve closes, and the crankshaft rotates 180°. At this time, the tracer and air quickly mix and enter the cylinder. It is further mixed with alternative fuels in the cylinder to form a combustible mixture.

[0...

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Abstract

The invention relates to a visual engine, and specifically relates to a tracer agent spraying system of visual engine (b.) ( / b)The tracer agent spraying system applied for visual engine test substantially comprises a cylinder cover, wherein a hole is opened in the center of the cylinder cover, a fuel injector is arranged inside the hole, and the fuel injector is able to directly inject fuel inside the cylinder body; a hole is opened in the air inlet channel side of the cylinder cover, a tracer agent spraying valve is arranged in the hole thereof, thus enabling the tracer agent spraying valve to be communicated with the air inlet channel of cylinder cover. The tracer agent spraying system applied for visual engine test uses independent tracer agent spraying system and fuel injecting system, thereby effectively controlling the quantity value of the tracer agent, thus saving the cost, increasing the economical efficiency, and concurrently reducing the unnecessary secondary reaction caused by too much metering; additionally, self-quenching caused by overhigh concentration of fluorescent materials is effectively avoided.

Description

technical field [0001] The present invention relates to a visual engine, in particular to a tracer injection system for a visual engine, which is used to collect data related to its internal combustion by advanced laser-induced fluorescence technology (PLIF), involving combustion spray technology, optical measurement means, detection Technology, chemical application technology, computer collection technology and imaging technology and other disciplines of the latest technical issues. Background technique [0002] The development of the combustion theory and technology of the new generation of internal combustion engines has brought the technology of diesel engines and gasoline engines closer and closer. The engine may organize different combustion methods according to the changes in the composition of the mixed fuel. Therefore, it is necessary to fully understand the spray characteristics and combustion of various mixed fuels. characteristics; since the 1970s, different meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M65/00
Inventor 施爱平许冠杰叶丽华庞弋骧李成郑庆明徐杰白文斌
Owner JIANGSU UNIV
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