Borodin D. Improvement of technical - and economic indices of the two - stroke transport diesel engine 6TD on the basis of the choice of optimal parameters of the supercharging system.

It is researched the possibilities of reduction of the diesel engine 6ДН12/2х12 (6ТД) operational fuel consumption at the cost of optimization of the exhaust system constructive parameters and controlling of the supercharger drive gear ratio, depending on the crankshaft speed, load and ambient temperature. It is shown, that the exhaust system with transformers of impulses is appropriate for use. Analytical relations are obtained for the calculation of optimal controlling relations. It is determined, that the supercharger drive controlling allows to increase the accommodation coefficient by 13% and fuel consumption by 10...60 % depending on the load, when operated to the load characteristic. The key words: two-stroke diesel engine, supercharging, supercharger drive gear ratio controlling, optimization of parameters.