Ключевые слова: двигатель внутреннего сгорания.

Tasks on the increase of the technical level and quality of internal combustion engines in the 11 five-year-old period are described. Data are given on the technical level increase in the 11 five-year-old period and tasks for the 11. The course of the •work is shown on eight types of diesel engines with progressive technical and economical characteristics

Ключевые слова: двигатель.

Results of a multi-factor experiment of the piston ring limiting condition are given, and a mathematical model is offered, showing carbon monoxide fumes of the crankcase oil. The limiting condition of piston rings on economical and technical criteria is established, the possibility to increase the maximum permissible wear of the engine D-144 piston ring Joints is grounded.

Ключевые слова: ДВС.

Different methods and apparatus for definition of the contamination means specific surface are described, used for evaluation of the engine filter operation. Materials are shown, measured on different instruments, the comparative analysis of investigation methods and results are given. It is shown that the more precise methods are the methods of gas adsorption and air tightness at the rarefied air flow.

Ключевые слова: двигатель.

Conditions are considered of comparison of engine thermo-dynamic cycles, and a single model cycle of the heat delivery at the constant pressure increase for different engine groups is offered. This summarized-cycle covers the use of different combinations of the fuel and oxidant. Some ideas of calculation of the model cycle parameters are given, and also an example of calculation.

Ключевые слова: Дизель.

Main features of a technique are described, including development and use of the heat release characteristic field, general characteristics of the combustion-extension process, formulas of adjustment, the cycle of the original mathematical model. Effectiveness is shown and the easy use of this technique in order to solve various practical, investigation and methodical problems.

Ключевые слова: ДВС.

A method is offered for the mathematical calculation of the two-dimensional flow of viscous heat-conducting gas, based on integral laws of conservation. Attained criteria of the numerical calculation stability are given. The method can be checked when comparing results of the numerical calculation with the analytical solution and experimental data.

Ключевые слова: ДВC.

Problems of calculation and assignment of boundary conditions (BS) of heat exchange are considered at modelling of temperature fields in the supercharged diesel engine valve and cylinder cover. The technique for calculation of BS is given, considering main features of the heat exchange during different processes of the operating cycle. For the BS assignment at the modelling of stationary temperature fields calculation formulas are given of the adjusted heat-release coefficients and the agent temperature.

Ключевые слова: дизель.

A mathematical analysis is given of characteristics attained experimentally at all cylinders operating. It is shown that the effectiveness can be increased potentially when a number of cylinders is dead. The amount of the saved fuel can be defined by a number of operating cylinders, by the engine features of its construction, by the load and mechanical loss In the dead cylinders.

Ключевые слова: ДВС.

The advantage to design a diagnostic model of a continuous object is shown based on results of the factor analysis. A method to search out model parameters is described, based on the maximum coefficient of correlation between the diagnostic parameter and factors, determining its variation.

Ключевые слова: ДВС

An analysis is given of test methods for internal combustion engines, operating under non-steady-state conditions. Classification of method is given, based on different conditions, attained on test benches. The tendency is shown of the wide use of transits for the diagnostics and various engine tests, and evaluation of the engine condition on transit parameters. The analysis is given of possible trends to the further development of both test methods and diagnostics at the engine non-steady-state conditions.

Ключевые слова: дизель.

A technique is given to define geometrical and elastic parameters of the crankshaft core model of optional profile, approximated by volumetric isoparameter finite elements. The attained adequate model can be used in quasi-static calculations of crankshafts for multi-cylinder engines. Calculations, based on the model, should be used instead of existing semi-empirical formulas, used for evaluation of torsional, axial and bending pliancy of crankshafts, but not provided for the above identity.

Ключевые слова: ДВС.

The importance of air coolers for the normal operation of the gas turbine supercharging diesel engine is defined. Problems of the increase of the air cooler effectiveness is considered.

Ключевые слова: двигатель.

Results are given of the development and Investigation of a method to test the delivery valve unit. This method can be used for definition of the unit technical condition on installations with standard pumps, nozzles and the pipeline.

Ключевые слова: топливная экономичность двигателя.

The calculation technique for the fuel delivery to the high pressure pump is given, using the double action delivery valve, and also features of the calculation programme for the injection, using the computer.

Ключевые слова: ДВС.

Results of investigations are given on manufacturing of a native speed governor 1VRN-400 of high capacity for engines 6ChN40/46. The governor is recommended for other powerful marine diesel engines.

Ключевые слова: двигатель.

Data of theoretical investigation are given, that can link the air excess coefficient decrease and the dynamic engine variation the correction range of fuel delivery on the boost pressure and the fuel rack position.

Ключевые слова: ДВС.

Theoretical and experimental 'investigations of the effect 'of' main constructive and technological parameters of casting on the shaping of the bimetal liner diffusion cast iron layer. The importance of the casting wall heat mass composition is shown, its effect on the cast iron distribution in the bimetal steel-cast iron.

Ключевые слова: ДВС.

A new technique is considered of tractor engine parts suitability tor the technical maintenance, considering the common effect of the dynamic variation of the technical conditions, periodical checks (diagnostics), permissible and limiting parameters, indicating the technical condition on the fuel consumption and parts wear rate at the engine operation, and also recovering of theinitial technical condition of components at the engine maintenance.

Ключевые слова: двигатель.

An experience of the use of an alloy is described, where nickel is used for the engine piston ring coating. Results are given of comparative operating tests of above coating for diesel-and-carburettor engines.

Ключевые слова: двигатель.

The possibility to solve the problem of a synthesis is considered on predetermined functions of the fuel delivery In the engine to establish reference parameters of the fuel system. The method is described to attain the regression equations, expressed in relation to considered fuel delivery parameters; these equations in their linear form are offered for the cycle delivery, residual pressure, injection time and maximum pressure in the diffuser. Numerical examples are given on how to solve the problem of the synthesis for four reference parameters.

Ключевые слова: ДВС.

A construction and principle lay-out of an experimental dynamic installation are described, based on the one-cylinder diesel engine 14N18/20 to investigate the aircharge motion in acylinder during the compression, fuel delivery and dynamics of the fuel spray forming at mixing, when the combustion chamber volume is variable, using the method of the speeded-up photoregistration by the apparatus SFR-2M. The function characteristic of the photoregistration is given and some investigation results are presented.