Keywords: engine.

Method of optimization is described, consisted of combination of methods of the consequent simplex search and penal functions. The method is realized as a program for the computer. Results are given of the engine 12ChN18/20 operating parameter optimization.

Keywords: diesel engines.

Principles of exergetic (thermodynamic) analysis of engine cycles are described. The exergy graph and its losses are given in thermodynamic diagrams. Conclusion is given of effectiveness of the exergetic method use for analysis at search of the cycle improvement.

Keywords: diesel engines.

The method of the indicator diagram calculation is considered, based on predetermined integral factors. The use of the thermodynamic second law allowed to get dependences suitable for calculation and analysis. Results of calculation and experiment are shown.

Keywords: diesel engines.

Losses from friction of the engine 4?h13/14 piston group (Ppg), based on the multi-factor fraction experiments planning. The contribution of each factor into the outlet optimization parameter is obvious, Ppg: the water and oil temperature 32.5%,the shaft rotational frequency 27.5%, cylinder liner wear 22.5% and load 17.5%. Optimum values of input factors for minimum possible values of the outlet parameter are defined. Experiment technique for engines of any kind of application and dimensions is being developed.

Keywords: diesel engines.

Problems of calculation of the external sped diesel engine characteristics are considered, using correction fuel delivery systems, based on experimental studies.

Keywords: diesel engines.

Results of the experimental study of thermal stress conditions are given for piston group parts of the automobile engine 8Ch 12/12 when turbocharged. Possible solutions of thermal piston problems are considered at the given level of turbocharging.

Keywords: diesel engines.

Sample values are received at averaging of the cycle maximum pressure on the base of experimental data, using interval evaluation for instability, which can be found in modern diesel engines, depending on predetermined errors for three values of recommended confidence probability.

Keywords: engines.

Components of the total heat flow on the engine cylinder head fire surface are evaluated for tractor diesel engines by experiments and calculation, and it is shown that the main heat portion for combustion chamber walls at the first engine start cycles is transferred by radiation, its main source is the luminous soot flame.

Keywords: engines.

Results of analytical investigations are given on development of a mathematical model of the abrasive cylinder wear in dependence on the engine design, operation and dispersed content of abrasive, happened to get into the engine, and also of the effectiveness of air and fuel filters. Received calculation dependences are proved by experimental investigation results.

Keywords: engines.

Investigation techniques are described of the unbalance effect on the engine ivibration, noise and service life, rating, vibrocontrol, registration and analysis of their unbalance in the balancing field.

Keywords: engines.

Initial preconditions are considered at derivation of formulas for losses from the engine friction, hypothesis at averaging of gas-and-inertia force presstras, influencing rubbing parts. Approaching analytical dependences on losses from friction in main diesel engine units are shown, and also power output, consumed for the auxiliaries driving.

Keywords: diesel engines.

The physical picture of the fuel pump spring coil variations is considered, a number of features on its base is discovered through the big spring variation process, and recommendations are prepared for parameters, excluding possibility of significant dynamic load emergence in spring coils because of resonance.

Keywords: engines.

The arrangement and operation of a centrifugal coupling with ball weights are described for the pump drive and automatic variation of the fuel injection advance angle in the engine combustion chamber. Results of motor and motorless tests of the coupling test specimen are shown.

Keywords: engines.

New results and technique are described of the friction force effect in the pair needle-atomizer body on autovibration frequency and amplitude. The theoretical reason of the new method is given. Some investigation results are also shown.

Keywords: engines.

Recommendations are offered for definition of ASTPP design sequence, extent of particular task elaboration.

Keywords: engines.

The method of the engine piston groove strengthening by surfacing is described. Investigation results are given of surfaced alloy features and tests of strengthened pistons in diesel engines.

Keywords: engines.

Defects of the pump sealings are considered. The short description is given of the plasma spraying process for ceramic.

Keywords: engines.

Problems of improvement of fuel tank manufacture technology are considered for automobiles and tractors in USSR and abroad.

Keywords: engines.

An experience in service of the first four diesel engines, series 18U50HU is considered, used as main diesel engines on ships type «Magnitogorsk». The reason is given of not to use medium speed diesel engines on ocean sailing ships of great deadweight.

Keywords: engines.

The functional dependence is given for evaluation of the necessary engine idling at the start. It is proved that at the temperature decrease the upper limit of the crankshaft rotational frequency is lowering, where the stable fuel ignition can be seen.

Keywords: engines.

Operation results are given of the increase of geometric parameter stability and shell reliability in the crankshaft bearing operation for diesel engines ChN26/26.

Keywords: engines.

Problems of emergence and evaluation of molecular-mechanical engine detail wear are considered. Investigation results and the engine test technique for this kind of wear are described