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Method for optimizing experimental fuel proportioning based on thermogravimetric analysis and gas-liquid dual-phase calculation

A technology of thermogravimetric analysis and phase calculation, which can be used in engine testing, weighing by removing certain components, testing of machine/structural components, etc., to solve problems such as the overall volatility gap, and to achieve improved calculation accuracy and good performance. Universal applicability, simple and reliable test method

Inactive Publication Date: 2010-07-07
TSINGHUA UNIV
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Problems solved by technology

However, the multi-component fuels obtained from such studies usually have a certain gap with the overall volatility of real fuels

Method used

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  • Method for optimizing experimental fuel proportioning based on thermogravimetric analysis and gas-liquid dual-phase calculation
  • Method for optimizing experimental fuel proportioning based on thermogravimetric analysis and gas-liquid dual-phase calculation
  • Method for optimizing experimental fuel proportioning based on thermogravimetric analysis and gas-liquid dual-phase calculation

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] The preparation method of the present invention can simultaneously solve the similarity problem of volatilization between special fuel oil and real fuel oil and the problem of synchronous volatilization of tracers in the mixed gas test of internal combustion engine laser-induced fluorescence method, and can match corresponding components for different tracers to realize Distinguish the volatilization of different light and heavy components in multi-component fuel oil, improve the accuracy of laser-induced fluorescence method experiment and expand the multi-component measurement capability of laser-induced fluorescence method.

[0025] The preparation method of the present invention firstly prepares the sample fuel oil, and then obtains the target fuel oil, adopts the measures of thermogravimetric analysis and gas-liquid equilibrium calc...

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Abstract

The invention relates to a method for optimizing experimental fuel proportioning based on thermogravimetric analysis and gas-liquid dual-phase calculation. Thermogravimetric analysis is performed to get an actual fuel volatilization characteristic curve; three types of saturated alkanes capable of characterizing all groups of fuels are mixed into an initial testing fuel to get a volatilization characteristic curve; according to the difference between the two volatilization characteristic curves, a testing fuel with adjusted usage of saturated alkanes is prepared; after repeated adjustment tests, a sample fuel is obtained; a gas-liquid equation of equilibrium and a universal chemical activity coefficient are used to calculate gas and liquid phases which are evaporated, and alkanes with adjusted synchronous volatilization are added; according to the difference between the volatilization characteristic curves of the new sample fuel and the actual fuel, proportions in the three groups are adjusted finely; after a plurality of repeated fine adjustment of the proportions of two types of alkanes in the three groups, a target fuel is obtained. Under the precondition of ensuring good synchronous volatilization rates of tracers and corresponding ingredients, a multi-ingredient fuel which has similar actual fuel volatilization characteristics is obtained.

Description

technical field [0001] The invention belongs to the technical field of optical diagnosis of automobile engine combustion system, relates to a method for preparing multi-component fuel oil used for laser-induced fluorescence testing of internal combustion engines, and in particular to a fuel ratio optimization experiment based on thermogravimetric analysis and gas-liquid two-phase calculation method. Background technique [0002] With the increasingly serious environmental protection and energy security issues, the automotive industry has increasingly stringent requirements for engine energy saving and environmental protection, which puts forward higher and higher requirements for the research and development of internal combustion engines. As an important research method, the optical diagnosis of internal combustion engine combustion is an important basis for advanced research and development of internal combustion engines and simulation calculations. Laser-induced fluoresc...

Claims

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Application Information

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IPC IPC(8): G01M15/00G01N5/04
Inventor 王建昕马骁何旭
Owner TSINGHUA UNIV
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