International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The usage of alternative fuels that reduce the emission of harmful components, but do not eliminate their presence (especially nitrogen oxides) will be analyzed in the article. researchers prove that operation process of diesel on standard fuel is characterized by the formation of nitrogen oxides during the combustion of a heterogeneous mixture of diesel fuel and air in those local zones, in which the composition of the mixture is close to the stoichiometric mixture. According to this, an actual problem today is to develop the method of perfect combustion process for diesels, when during the diesel operation the local values of air excess coefficient αi and temperature Ti will not be in the range in which nitrogen oxides and soot are formed. So, converting a diesel engine into gaseous fuel ensures a reduction of toxicity and smokiness in exhaust gases and from this point of view, the values of the air excess coefficient will be considered in accordance with the mode of diesel operation and possibility of using various types of impurities to improve fuel properties and, as a result of their consumption, to improve both, ecological and efficient indicators.

Design of turbo-compressor type of internal-combustion rotary engine (TIRE) was made. The design is the hybrid of conventional internal combustion engine and gas turbine. Design of engine reminds gas-driven turbine, because it has compression pump, turbine and combustion chamber. Operating principle is similar to conventional engine because it has not uninterrupted but portion process of fuel combustion. Operating principle: working mixture is compressed by the compressor and directed to the combustion chamber. In the combustion chamber it is ignited and through the outlet ports is directed to the turbine rotor and makes it rotate. Turbine rotor rotates engine shaft, from which useful output is removed. The working model of engine was made and preliminary tests were carried out. Results showed that the engine needs same improvements.