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Petrol engine with strautified charge has compression ratio 12-14 and air/fuel ratio 3 and more without detonation. Charge strautification increases part-load efficiency by 10-15%. Automotive diesel without supercharging has 50% smaller specific output and o 15% higher efficiency that engine strautified charge.

The results of analysis of stress state of parts of gas-distribution mechanism of high-speed diesel.

On an example of designing a head of small-sized diesel engine MD-8 the technique and results of the analysis of a thermal condition of a design with use of toolkit Solid Works and COSMOS Works are resulted. It is shown, that existing in Autodesk Inventor the concept of the organization and construction of assembly units is most convenient in internal-combustion engine design in view of great volume of changing analyzed parameters.