Keywords: engine.

Investigation results are given of the gas exchange indicator process for the diesel engine 6ChRN40/46, fitted with imported and national units.

Keywords: diesel engines.

Technique and results of heat balance tests are described for high speed automotive supercharged diesel engine with water and antifreeze cooling. It's shown that at the antifreeze cooling the heat portion, entering the cooling liquid, is decreased, but heat dissipation to oil anl exhaust gas is increased. It can be noticed the essential increase of the engine cylinder head temperatures.

Keywords: diesel engines.

An up-to-date problem is considered, that is decrease of the piston thermal stress for a supercharged tractor diesel engine. Comparative investigations are analyzed of the use effectiveness for charge air intermediate cooling and increase of its pressure.

Keywords: diesel engines.

Results ere given of theoretical investigations as to defi nition of the maximum hydrodynamic pressure in the lubricating layer. Dependence is defined of the maximum hydrodynamic pressure on a umber of constructive and operating parameters. It is shown that both the maximum hydrodynamic pressure in the lubricating layer and the trajectory of the crankpin centre are necessary and important parameters when calculating multiple loaded sliding bearings.

Keywords: diesel engines.

Analytical interconnection is established of effectiveness and parameters of the engine piston circuit labyrinth with dynamic instable compression rings, based on the analysis of forces effecting the piston ring and compression ring axial movement in piston grooves at compression and operating cycles. Operating conditions of the circuit labyrinth are defined and effect of a clearance of the first compression ring lock on its properties, using a complex method for a piston of 150 mm.

Keywords: diesel engines.

J Construction of an installation is considered to investigate the flexible crankshaft sagging and features for calculation of modelling parameters for specific KSHM installation (X^const.). Results are given of modelling of the dynamic flexible crankshaft sagging for marine diesel engines of type 6Ch27,5/36 and 6Ch18/22 (6L275), using this installation.

Keywords: diesel engines.

Connection of delivery valve speeding characteristics with parameters of ?? technical condition anl possibilities of their diagnostics.

Keywords: engines.

Instrument and technique are given, developed for measurement of the air consumption in a car engine, the air pollution at the car running, and results of the instrument test, following this technique.

Keywords: engines.

Results are given of the experimental investigation of the optical diagnostics, based on the selection of the flame glow from the combustion chamber of the engine 4Ch11/12.5 with a swirl chamber. This method was applied when defining the engine speed, phase parameters anl fuel injection accuracy.

Keywords: engines.

Geometrical theory is given to design stators and rotors of RPD with out-of-centroidal hypocycloidal coupling. Recommendations are given on how to select main initial parameters .defining stator and rotor geometry, coming from required volumes of RPD operation chambers. The problem of the formerless treatment considered of RPD hypocycloidal stators and rotors, using an instrument of the cylindrical shape. Diagrams of mechanisms are given, taken as a base for machine tools for RPD stator and rotor cutting.

Keywords: engines.

An example of the electro-erosion grinding of the guiding hole in the nozzle housing shows that the use of the technological control liquid ZHTK-3 improves sanitary-hygienic operating conditions and decreases a fire hazard, the treatment quality thereby anl its output do not change.

Keywords: diesel engines.

An analysis is given of main reasons for operating damages of connecting rod bearings, experimental data are given, to specify the bearing cranking process. It is shown that before bearing cranking rubbing and firing stages take place because of bearing deformation, caused by assembling and thermostress; recommendations are given on reduction of bearing deformation intensity at operation.

Keywords: engines.

Experimental anl calculation information is given facilitating the choice of a supercharging level for a shunting locomotive engine.

Keywords: engines.

The work on details unification for general engineering in the diesel engine industry is taken under consideration, their use at diesel engine plants. Ways to improve the detail unification are shown, taking their design anl teclnological classification as a base. The sequence of this work on unification of the existed desing documentation and during its development is shown.

Keywords: engines.

Proposals on the revision of GOST 1 0150-75 «Diesel engines for land and for marine use, locomotive and industrial. Technical requirements» are considered, eliminating essential faults of this GOST, related to the power and speed nomenclature of the idling engine.

Keywords: engines.

Calculation and experimental data are given on improvement of the high speed supercharged diesel engine operation by means of improvement of the fuel injection characteristics. It is shown that the fuel delivery intensity allows to improve the engine parameters and reduce the hitting range of the fuel spray, all the more increasing the volumetric mixture forming. Effect of the injection intensity on the initial phase of the heat dissipation process is considered.

Keywords: engines.

Oxidation of standard and heavy diesel fuels in the liquid phase is considered, in relation to the engine nozzle contamination by varnishes and carbon deposits. It is shown that the additive PMAM-2 (co-polymer of ethyl of aliphatic alcohol C8 — C12 metacryl acid with 2-methyl-5-vinylpyridin) eliminates the solid phase in the fuel, heated up to 250 °C and prevents the nozzle contamination, their temperature at the engine operation does not exceed 250 °C.

Keywords: engines.

Design is described and also test results of the laboratory ????1? of the accumulator fuel system with the hydraulical nozzle control, applied to a high speed transport diesel engine.

Keywords: engines.

ExperiA new method is given to investigate the fatigue strength of antifriction materials for sliding bearings, evaluating the bearing loading on maximum hydrodynamic pressures in the oil layer. Results of rig tests of bearings, using A0-20 alloy, are given.

Keywords: engines.

Requirements are grounded of the gasoline quality for carburetor engine tests.