Keywords: engines.

Keywords: engines.

Evaluation is considered of the octave spectrum of the sound power of multi-cylinder in-line diesel engines, based on a calculated model, kind of two plates, connected by diaphragms. Engine frame dimensions, some mechanical properties of the material, the engine mass and cylinder bore, its speed, piston speed and maximum cylinder pressure are used as reference data.

Keywords: engines.

Investigation results are given, using a method of elestro-ther-mal analogues to effect the maximum and steepness location of the curve for distribution of the heat release coefficient й from the working medium to the piston along the bottom radius to the calculated temperature field. Limits are shown, where the error at the curve й shape evaluation has no effect on attained results.

Keywords: engines.

The use of heat, delivered to the inner Stirling engine circuit is analyzed. A polytropic version of the Stirling cycle is offered, considering the element interaction in the inner circuit, which clarifies an ideal isothermic cycle.

Keywords: engines.

Calculation results are given of thermo-dynamic balanced combustion temperatures and concentration of the nitrogen oxide when burning the air-ammonia and air-hydrogen mixtures within the pressure limis 0.1 — 16 1 mPa and initial temperatures 300—1100K typical for the flame spreading along the combustion chamber.

Keywords: engines.

The reason and perspectives of the use of a finite element method is shown to calculate space (torsional-deflection-axial) oscillations of shaft lines, including crankshafts. Crankshafts are recommended to approximate, using volumetric finite elements, kind of trihedral prisms.

Keywords: engines.

It is shown that at the high evaporation speed the effect of concentration and temperature fields is going to cover the distance up to 10 drop diameters, which is commensurable and longer than the average distance between drops in the engine fuel spray.

Keywords: engines.

Theoretical analysis is given of stability of the engine fuel system operation, and the stability criterion is defined.

Keywords: engines.

The general solution is given for the problem of a non-stationary motion of viscous liquid (oil) in centrifuge rotors. The solution for individual cases is given. Results are described of experimental definition of speed field parameters for the rotating flow of liquid of various viscosity. The clarified expression is offered for criterion of suspended particles settling in centrifuge rotors.

Keywords: engines.

A unified construction of a driven centrifugal blower, used on a number of engine modifications, type D100 (DN20.7/2X 25.4) and D70 (ChN25/27) is taken under consideration. The reason for its use is shown.

Keywords: engines.

Connection is established between thermal and mechanical engine stresses from one hand and exterior navigation conditions of the ship motion from the other hand. If is shown that at sea with no engine overload, regarding thermal stress values, the speed condition stability is more preferable, comparing with the thermal condition stability.

Keywords: engines.

Investigation results are given of the automotive diesel engine D240 (4Ch11/12.5), attained on a special motor test bed under various load, its variation following a harmonic law with different amplitudes and frequencies, that let one have come to the conclusion that the power and fuel consumption decrease comparing with steady state conditions could be fixed only in zones of the governor non-linear characteristics.

Keywords: engines.

A technique is given of evaluation of the engine parts fatigue service life, using the simulation modelling and linear hypothesis of the damage summation. An example is given of the effect of the main marine engine control on the fatigue service life.

Keywords: engines.

An experience of tests of oils with antifriction additives is summarized. Recommendations are given on the matter of European Coordination Council.

Keywords: engines.

A friction coefficient and wear are studied of the friction pair graphite AG-T1 — steel, mark 20 with different types of sublayers and coatings at 500 °C. It is shown that the nitrited steel of mark 20 in the pair with above graphite under similar test conditions has a minimum friction coefficient and can be recommended to use in the sealing Joints of the heat exchanger AGTD.

Keywords: engines.

Problems of the water delivery to the engine cylinders are considering, in order to decrease the exhaust gas toxicity and smoke. Results are given of the effect of water delivery at the inlet on the content of toxical components In the air cooled engine exhaust gas, and also analysis of the water delivery effect on indicator diagram parameters and heat release characteristics.

Keywords: engines.

Investigation results are given of a speeded-up conditions of the engine 6ChN25/34 running-in, using the additive ALP-3.

Keywords: engines.

Main technical characteristics and construction of an electronic device for the fuel delivery control are described, and also problems of its use during the engine adjustment.

Keywords: engines.

Keywords: engines.

Definitions of the engine reliability, its properties and main features of these properties are offered for discussion.