In given article the substantiation of a quite inexpensive and perspective method of manufacture of biological fuel from renewed sources - rapseed oils is submitted. The mixture of complex ethers of saturated and nonsaturated fat acids (МERO) has been received by etherification rapseed oils. The percentage ratio of a methyl ether and network value of heat of biological fuel has been determined with the help of chromatography МERO. Physical properties of diesel fuel, MERO, and their mixes and also value of these properties are determined at injection, dispersion, and mixing in the diesel cylinder.
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