Keywords: engine.

The method is described for approaching solution of the differential heat conduction equation for the engine heater pipe with the external heat supply. In order to evaluate improvement of the heater construction the use of the numerical index — coefficient of the heating non-uniformity is offered. This method allows to choose the suitable shape of the pipe surface.

Keywords: diesel engines.

The method fo evaluation of the consequent operating engine cycles similarity is offered on the crankshaft speed angle. Advantages of this method comparing with the previous are considered. A numerical criterion for evalution of the engine operation stability is offered.

Keywords: diesel engines.

Calculation technique is given for a compound piston as a system of bodies in contact, using the method of finite elements. Results of calculation are given for a compound piston of the locomotive diesel engine ChN26/26.

Keywords: diesel engines.

Theoretical analysis is given of the turbochagerd diesel engine automatic control system, its element parameters effect on the air excess coefficient at transient when the governor load or adjustment are altered. Data to prove experimentally separate theoretical positions are given. Some requirements of this control system elements are listed to restrict the air excess coefficient decrease beneath the minimum permissible value, taking into account turbocharged engine operating conditions.

Keywords: diesel engines.

Complex of methods for the speeded-up evaluation of the service reliability for tractor engines is offered. Their development is described. Results are given of different engine tests, including technique for speeded-up evaluation of reliability at cyclic power and thermal loads.

Keywords: diesel engines.

Investigation results are given of an experimental combustion chamber, following a new method of the engine operation. The thermal condition for the piston with the experimental combustion chamber is defined.

Keywords: diesel engines.

Torques of diesel engines with different forcing by mean effective pressure are analysed by a computer. It's evident, that the for- cingleads to the increasing of the irregularity of torque and increasing of low frequency vibration. Different methods for its reduction are shown and the most effective are found.

Keywords: engines.

Problems of the use of the electro-dynamic drive are considered for the nozzle latch, and main requirements of their quick lift and lowering, their effect on differential and integral delivery characteristics.

Keywords: engines.

A new method for optimum cam TNv.d. profiling is offered, which allows to increase the plunger speed in the fuel injection area, and to decrease contact stresses in the pair cam-roller. Real power acting in the plunger drive is considered at designing, for that purpose the hydro-dynamic fuel supply calculation is given, and the fuel power pressure on the plunger can be defined.

Keywords: engines.

Rusults are given of theoretical investigations fulfilled with the use of computer, and experimental investigations fulfilled using a test bed of the effect of the high pressure pump delivery valve clearance on fuel injection parameters.

Keywords: engines.

Results are given of experimental investigations of diesel-electric plants (DEU) with the induction genetator (AG) under fractional load conditions, the plant lay-out is described. The optimum economical law of the dependence control of the DEU with AG speed on the load, n = f (p). Regression equations are given and also diagrams of main DEU with AG parameters.

Keywords: diesel engines.

Technique is given of the piston ring ovality measurement, and evaluation of the epure nature by the measurement results is defined.

Keywords: engines.

Two calculation programs are founded for calculation of precision and stability of technological processes. Programs are written in AP language for the computer «Nairi-?». Adjusting calculation was carried out using GOST 16467-70 and GOST 1 1.006-74 data. These programs are advised to use when evaluating the technological process of piston rings.

Keywords: engines.

Experimental and calculating data are given, allowing to decrease the fuel consumption at operating conditions, by selecting fuel equipment and combustion chamber shape.

Keywords: engines.

Results of laboratory and operation tests are given of nozzles with multi-hole diffusers on tractors T-40. It is found that the crankshaft speed does not effect the diffusers coking. The engine load conditions are decisive for nozzle diffuser coking at the normal engine operation.

Keywords: engines.

Problem of determination of technical condition of automobile petrol engines by analysis of exhaust gases for carbon oxide, nitrogen oxide and hydrocarbons by usage of the native gas analytical equipment is shown.

Keywords: engines.

Possibilities are considered to investigate the engine reliability, taking into account the structure-probable engine system: the oil, using the operating oil as a main information source, and main principles of model building, using regularities between system data. Multi-factor models are described of the cylinder- piston group wear process in marine engines G70-5 and M400, M401, built-up on operation test results.

Keywords: engines.

Results are given of the engine 6ChN25/34 test bed tests of investigation of the motor oil filtration speed effect on its cleaning effectiveness, and engine conditions, when using filter materials BFM and DRK.B. Empirical dependences of elements «Narva-6-4», «Narva-6-5» service life and the engine KPM parts wear speed on considered parameters are given, using operation test data, processed by the correlation analysis. Recommendations are given on optimum area and operating range of the filtration speed at the full-flow oil cleaning in marine engines.

Keywords: engines.

Investigation results of the fuel pump LND are given for automotive diesel engines when comparing different diagrams of the fuel circulation, which can be used by experts busy with design and adjustment of diesel engine fuel pumps.

Keywords: engines.

Possibility to use the nodal point method is shown at investigation of friction loss in engines, and also its advantage comparing with orthogonal factor plans: multi-factor model analysis and synthesis are simplified, number of tests can be reduced, factor compatibility is provided.

Keywords: engines.

Main trends and ways are shown to improve effectiveness of the fuel use on ships with diesel engine units. Empirical dependence is given, based on experimental and analytical analysis for calculation of the fuel economy at marine engine operation by improvement of their service parameters, carrying out timely motoileaning, optimum selection of main and auxiliary diesel engine operating conditions, cleaning of auxiliary boiler heated surface.

Keywords: engines.

Physical model is considered of the lubrication oil going through the engine combustion chamber.

Keywords: engines.

Possibility to predetermine the engine life is considered in dependence on sharing operating conditions at the engine service.