Economic evaluation of using of water-methanol injections in diesel engines
The article gives an economic evaluation of the effectiveness of water and water-ethanol injections during the operation of mobile agricultural machine-tractor units, with a sowing unit combined with a tractor MTZ-80/82 and a stubble planter SES-2.1 taken as an example of an agricultural machine-tractor unit. When calculating the cost of ethanol, it is necessary to use a grain equivalent as grain can be regarded as a raw material and a final product. In particular, grain is used as the raw material to produce ethanol, and ethanol, in its turn, is used as a fuel for grain production. As a result of researching the use of machine-tractor units on the basis of tractors MTZ-80/82 with engines D-240 (4Ch 11/12.5) equipped with devices for water and water-ethanol injections, for the agriculture of the Russian Federation is established to be economically profitable. The annual economic effect ranges from 38 000 to 160 000 rubles for one tractor MTZ-80/82 per year