Method and device for collecting and testing stable combustion intermediate products

A technology that stabilizes combustion and products, and is applied in the direction of using combustion for chemical analysis. It can solve the problems of high cost and high maintenance cost, and achieve the effects of simplified operation, controllable combustion process, and simplified operation steps.

Pending Publication Date: 2021-09-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This technology has strong adaptability and high detection accuracy, but it is expensive, high maintenance cost, and extremely dependent on the experimental platform it is built on

Method used

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  • Method and device for collecting and testing stable combustion intermediate products
  • Method and device for collecting and testing stable combustion intermediate products
  • Method and device for collecting and testing stable combustion intermediate products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1 - on-line detection of intermediate products

[0061] (1) For the fuel to be tested, determine the intake air temperature and premix temperature according to its corresponding physical and chemical properties, to ensure that the fuel and air mixture enters the engine 21 in a gaseous state.

[0062] (2) Adjust the piston in the variable compression ratio engine 21 to the top dead center, adjust the gap between the intake and exhaust valves, keep the intake valve at 0.15mm, and the exhaust valve at 0.25mm, and turn the handwheel to adjust the compression ratio to 5; check the liquid level of the internal and external circulation, open the switch 18 of the external circulation water tank to make it work; add 1.5L of fuel to be tested into the fuel storage tank, and after injecting high-pressure nitrogen, open the oil delivery and discharge tee 5, and press the diesel into the High-pressure oil pipe 6; turn on the main switch of the console, turn on the motor s...

Embodiment 2

[0064] Example 2—off-line detection of intermediate products

[0065] (1) For the fuel to be tested, determine the intake air temperature and the temperature of the air mixture according to its corresponding physical and chemical properties, so as to ensure that the fuel and air mixture enters the engine 21 in a gaseous state.

[0066] (2) Adjust the piston in the variable compression ratio engine 21 to the top dead center, adjust the gap between the intake and exhaust valves, keep the intake valve at 0.15mm, and the exhaust valve at 0.25mm, and turn the handwheel to adjust the compression ratio to 5; check the liquid level of the internal and external circulation, open the switch 18 of the external circulation water tank to make it work; add 1.5L of fuel to be tested into the fuel storage tank, and after injecting high-pressure nitrogen, open the oil delivery and discharge tee 5, and press the diesel into the High-pressure oil pipe 6; turn on the main switch of the console 22...

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Abstract

The invention relates to a method and a device for collecting and testing stable combustion intermediate products, which are characterized in that fuel with combustion characteristics to be tested and air are premixed according to a certain equivalence ratio to form a premix, and the premix is injected into an engine capable of continuously adjusting the compression ratio at a certain air inlet temperature and a premixing temperature of the premix, the stable combustion of the fuel in a certain state is continuously and stably realized under a fixed compression ratio, and a stable intermediate product generated by the stable combustion in the state is fed into an analysis system for analysis. The combustion process is controllable, the combustion state is stable, stable combustion of fuel in a certain state is continuously and stably achieved under the fixed compression ratio, and stable intermediate products generated in all the stable combustion states are sent into an analysis system to be analyzed. It can be ensured that combustion intermediate products enter an analysis system, meanwhile, experiments and result analysis can be synchronously conducted on line, and experiment working conditions can be adjusted at any time according to analysis results.

Description

technical field [0001] The invention relates to the technical field of liquid fuel combustion characteristics testing, in particular to a method and device for collecting and testing stable combustion intermediate products. Background technique [0002] Liquid fuel including gasoline, diesel oil, kerosene, etc. is a large category of fuel, which can generate heat or power, and is currently the main energy supply fuel for various engines. At present, with the development of new fuels, gaseous fuels such as hydrogen and dimethyl ether (DME) are gradually applied to internal combustion engines. Therefore, it is of great significance to study the proportion of liquid and gaseous fuel components and the influence of component structure on combustion characteristics to improve the combustion efficiency of internal combustion engines and achieve green emission reduction, especially for the preparation of various new alternative liquid fuels. great guiding value. [0003] The curr...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01N31/12
CPCG01N31/12
Inventor肖睿罗俊仪吴石亮高子翔包嘉靖
OwnerSOUTHEAST UNIV