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HCCI diesel engine fuel oil mist spray testing device

A test device, diesel engine technology, applied in the direction of fuel injection device, measurement device, engine test, etc., can solve problems such as difficulties, and achieve the effect of high injection pressure

Inactive Publication Date: 2018-06-05
王丽艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The research and exemption of HCCI combustion technology is going on all over the world, but there are still great difficulties in realizing HCCI combustion on diesel engines, one of the most important difficulties is how to form a lean and evenly distributed mixture

Method used

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  • HCCI diesel engine fuel oil mist spray testing device
  • HCCI diesel engine fuel oil mist spray testing device
  • HCCI diesel engine fuel oil mist spray testing device

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with drawings and embodiments.

[0020] like figure 1 , in the experimental device of the laser-induced fluorescence test system based on high-voltage electronically controlled fuel injection, the test system consists of a laser and optical system, a visual engine dragged backwards by a motor, an engine intake system, a high-pressure fuel injection system and a control system based on a microcomputer. The system uses COMPex102 type excimer laser, the light source wavelength is 308nm. After the laser is reflected by the mirror, it is expanded, collimated and compressed to form a laser sheet, which is shot from the quartz window onto the spray oil beam in the cylinder of the visualized engine, and the fluorescent additive is excited to emit fluorescence.

[0021] like figure 2 , The nitrogen supply system of the engine, the nitrogen is decompressed to roughly one atmospheric pressure by the pressure g...

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Abstract

The invention discloses an HCCI diesel engine fuel oil mist spray testing device and belongs to the field of electrical control. The HCCI diesel engine fuel oil mist spray testing device comprises a high-pressure fuel oil injection system, a circuit control system, a nitrogen supply system and a visual engine. The high-pressure electronic control fuel oil injection system has the advantages of being high in injection pressure, capable of adding a fluorescent agent easily and the like, and meanwhile multiple-pulse fuel oil injection can be achieved. According to the fuel oil injection system, the fluorescent agent can be added easily; moreover, the injection pressure is high, the multiple-pulse fuel oil injection can be achieved, and the circuit control system can synthesize multiple-pulsefuel oil injection control signals; and the pulse width, pulse separation and frequency, pulse injection advance angles and main injection are flexible and adjustable, and an excimer laser, a CCD andan ICCD can be coordinately controlled to achieve synchronous working with fuel oil injection.

Description

technical field [0001] The invention relates to an HCCI diesel engine fuel spray test device, which is suitable for the field of electric control. Background technique [0002] In recent years, with the rapid increase in the number of automobiles, the exhaust gas emitted by internal combustion engines has increased, making urban air pollution more and more serious. One of the main ways to reduce exhaust emissions is to improve the combustion process in internal combustion engines. For direct-injection diesel engines, the characteristics of fuel spray directly affect its combustion process, and improving the quality of fuel atomization will improve its combustion. [0003] The fuel injector spray of a diesel engine is a transient process. When studying the influence of fuel injector parameters on fuel spray, a large amount of valuable information can be obtained by using high-speed photography technology. However, high-speed photography technology must process the film to ob...

Claims

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Application Information

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IPC IPC(8): F02M65/00
CPCF02M65/00
Inventor 王丽艳
Owner 王丽艳
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