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Method and system for identifying content of biodiesel in mixed fuel oil

A technology of biodiesel and fuel oil, applied in the direction of biological neural network model, fuel injection control, engine control, etc., to achieve the effect of reducing complexity and improving economy

Inactive Publication Date: 2017-01-11
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Claims
  • Application Information

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Problems solved by technology

However, this method requires special measuring instruments and accessories, which are often used in biodiesel production plants and testing institutions

Method used

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  • Method and system for identifying content of biodiesel in mixed fuel oil
  • Method and system for identifying content of biodiesel in mixed fuel oil
  • Method and system for identifying content of biodiesel in mixed fuel oil

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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0049] figure 1 It is a flow chart of the method for identifying the content of biodiesel in blended fuel oil according to the present invention.

[0050] refer to figure 1 As shown, a method for identifying the content of biodiesel in blended fuel comprises the following steps:

[0051] S1, collect the operating condition parameters of the engine; the operating condition parameters include the mass flow rate of the blended fuel EGR rate r, exhaust oxygen concentration q out , intake pressure P in, engine speed n; where the EGR rate r is the exhaust gas recirculation rate, which means: the ratio of the mass flow rate of exhaust gas entering the engine to the total intake mass flow rate.

[0052] S2. Import the worki...

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Abstract

The invention provides an on-line identification method and device of biodiesel mixed fuel for a diesel engine. The method includes the steps of S1, collecting operation condition parameters of the engine, wherein the operation condition parameters comprise mixed fuel oil mass flow rate (with the symbol shown in the specification), the EGR rate r, the exhaust oxygen concentration qout, the inlet pressure Pin and the engine speed n; S2, importing the operation condition parameters into a neural network model established in advance for calculation to obtain the oxygen content qf of mixed fuel oil; and S3, obtaining the current volume concentration BDvol of biodiesel in the mixed fuel oil on the basis of the oxygen content qf of the mixed fuel oil. According to the method, the complexity of detecting oil products is lowered for users, the mixing proportion of the biodiesel in the mixed fuel oil in the actual use process is well represented, performance optimization of vehicles becomes possible when different oil products are used, and the economical efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of diesel engine biodiesel blended fuel detection, in particular to a method and system for identifying biodiesel content in blended fuel, and an engine control method and control system. Background technique [0002] Biodiesel is usually obtained through the esterification reaction of oil-containing vegetable or animal fats and low-molecular alcohols. Its main components are fatty acid esters, which are complex organic mixtures with high oxygen content. In the analysis and production process of biodiesel products, gas chromatography, infrared spectroscopy and mass spectrometry are often used to analyze the components of biodiesel in detail to ensure that the proportion of various substances in the product is appropriate. Among them, infrared spectroscopy has a strong advantage in determining the blending ratio of biodiesel and ordinary diesel, and its determination speed is fast and the repeatability is hig...

Claims

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Application Information

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IPC IPC(8): F02D41/14F02D41/30F02D21/08F02D19/08G06N3/02
CPCF02D41/0025F02D19/088F02D41/0052F02D41/1401F02D41/30F02D2041/1433F02D2200/0406F02D2200/0625F02D2200/08F02D2200/101G06N3/02
Inventor 刘波澜张超董天普张付军
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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