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Rapeseed oil/ethanol/PODE (polyoxymethylene dimethyl ether) mixed fuel suitable for diesel engine

A hybrid fuel, 35% PODE35% technology, applied in the field of new hybrid fuels, can solve the problems such as no reports of rapeseed oil/ethanol/PODE hybrid fuel, and achieve the effect of solving excessive dependence, reducing emissions, and good mutual solubility

Inactive Publication Date: 2019-12-20
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There is no report on rapeseed oil / ethanol / PODE blended fuel

Method used

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  • Rapeseed oil/ethanol/PODE (polyoxymethylene dimethyl ether) mixed fuel suitable for diesel engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Ethanol 15L, rapeseed oil 15L, PODE 20L.

[0032] The rapeseed oil is commercially available transgenic primary rapeseed oil. The mass percentage purity of the ethanol is 99.5%.

[0033] The polyoxymethylene dimethyl ether PODE is a mixture, and its structural formula is CH 3 O–(CH 2 O) n –CH 3 , where n ranges from 3-6.

[0034] Configuration method: first add ethanol to rapeseed oil to form an incomplete miscible mixture, then add PODE to the mixture under stirring and mix evenly to obtain a blended fuel mixture.

[0035] Tested: kinematic viscosity is 3.89mm 2 / s.

Embodiment 2

[0037] Ethanol 20L, rapeseed oil 12.5L, PODE 17.5L.

[0038] The rapeseed oil is commercially available transgenic primary rapeseed oil. The mass percentage purity of the ethanol is 99.5%.

[0039] The polyoxymethylene dimethyl ether PODE is a mixture, and its structural formula is CH 3 O–(CH 2 O) n –CH 3 , where n ranges from 3-6.

[0040] The configuration method is the same as in embodiment 1

[0041] Tested: kinematic viscosity is 3.29mm 2 / s.

Embodiment 3

[0043] Ethanol 25L, rapeseed oil 10L, PODE 15L.

[0044] The rapeseed oil is commercially available transgenic primary rapeseed oil. The mass percentage purity of the ethanol is 99.5%. The polyoxymethylene dimethyl ether PODE is a mixture, and its structural formula is CH 3 O–(CH 2 O) n –CH 3 , where n ranges from 3-6.

[0045] The configuration method is the same as in embodiment 1

[0046] Tested: kinematic viscosity is 2.76mm 2 / s.

[0047] Three kinds of mixed fuels with different ratios in Examples 1-3 were carried out to kinematic viscosity measurement, and the results showed that the new mixed fuel provided by the present invention was under the low, medium and high ratios of ethanol, and the addition amount of the blending agent PODE presented a medium high two. The viscosity of the obtained blended fuel showed a monotonically decreasing trend with the increase of the proportion of ethanol and was significantly improved. After adding the blender PODE, the visc...

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Abstract

The invention discloses rapeseed oil / ethanol / PODE (polyoxymethylene dimethyl ether) mixed fuel suitable for a diesel engine. The mixed fuel is prepared by blending components according to a certain volume ratio within a temperature range of 40-60 DEG C through blending technical means. The mixed fuel is prepared according to the following steps: adding ethanol into rapeseed oil to form an incompletely intermiscible mixed solution, adding PODE into the mixed solution while stirring, and performing uniform mixing so as to obtain the blended mixed fuel. The obtained mixed fuel is stable and homogeneous, and the overall viscosity of the system meets the requirements of a traditional diesel fuel. By adding ethanol, the combustion efficiency can be improved, and the emission of nitrogen oxides (NOx) and particulate matter (PM) can be reduced. The PODE is added, so that the cetane number of a rapeseed oil and ethanol basic system can be improved to a certain extent, the overall density of a fuel system is improved, pressure wave transmission in the fuel injection process is faster, and therefore the input capacity and the power performance of an energy engine are improved.

Description

technical field [0001] The invention relates to the field of renewable alternative energy sources for internal combustion engines, in particular to a novel mixed fuel suitable for diesel engines. Background technique [0002] The use of vegetable oils as biofuels has been extensively studied. Oils extracted by certain methods have close homologous physical properties to diesel fuel, making them potentially useful as biofuels. Several types of vegetable oils have been used as potential alternative fuels, such as soybean, rapeseed, cotton and palm oil. As the world's largest producer of rapeseed oil, China is rich in rapeseed oil resources. Rapeseed oil has the same oxidative stability and relatively low volatility advantages as other vegetable oils. However, the high viscosity and density of rapeseed oil has become a prominent drawback for its application as a fuel. Therefore, long-term use of canola oil can lead to engine durability problems, such as coking of fuel injec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/02C10L1/18C10L1/185
CPCC10L1/02C10L1/1802C10L1/1852C10L2270/026
Inventor 金超张曦媛刘海峰耿振龙刘昕孙天韵陈新宇刘章浩王烨昊
Owner TIANJIN UNIV
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