Key words: engines.

A possibility is considered to improve the piston thermal condition by variation of the liner temperature field, that can be attained by selection of a reasonable diagram of the cooling liquid motion within the liner cooling space. Variation of the piston temperature condition is shown to be effected by both (he level and nature of the temperature distribution at the upper and most thermal stressed zone of the liner surface and the temperature level at the bottom liner operating surface.

Key words: engines.

Results are given of the experimental investigation of the working medium flow through valve timing members at the variable channel geometry and variable cylinder space configuration. It is established that in case the piston is about TDC the flow asymmetry is going to increase, this can be seen in the decrease of the channel clear opening (the final result of this is the three or four times decrease of the consumption coefficient or the effective clear opening).

Key words: engines.

Results are given of the calculation-experimental investigation of versions of the diesel engine cylinder-piston group construction for the industrial tractor type 8ChVN15/16.

Key words: engines.

Results are given of the use of the method of finite elements and boundary integral equations to calculate concentration coefficients in crankshaft fillets. Both methods are shown to get quite precise results for the predetermined time. Numerical values are compared with results of calculation-experimental techniques by A.S. Leikin and A. Eberhard. A conclusion is made of the better concurrence of calculated values with results of the A.S. Leikin technique.

Key words: diesel.

A structure is considered of information data of the engine object local model, including quality parameters, input and output data, control parameters. The technology is given of the module type local model, developed by an operator on the base of the fuel delivery system example.

Key words: engines.

Main statesments are described as well as decision algorithm and mathematical model for calculatoin of the cam mechanism of a high pressure diesel engine fuel pump, optimized on the plunger motion speed during its active stroke and on the value of the active stroke at predetermined limits on constructive and technological parameters, as well as on the plunger reliability and durability. Results are given of optimization of mass production fuel pump cams, results being attained following the above technique.

Key words: engines.

Results are given of the work concerning development and manufacturing of the instrument to measure rotation non-uniformity of the diesel engine speed governor drive. There are band-pass filters for the harmonic analysis. In addition this device can registrate parameters of SARS transits on speed and fuel pump rack stop. The crankshaft speed is registrated by the numerical indicator.

Key words: engines.

Test bed operation is described for acceptance tests of fresh water pumps for marine diesel engines type 3D6, 3D12 with main parameter control (suction depth, suction time, efficiency) at fixed back pressure and pressure fluid temperature. Principal technological diagram is given, test bed composition, completeness, test bed data, characteristics of main control devices.

Key words: engines.

Development is described of the technique of calculation thermal-hydraulically of optimum two-stage charge air coolers with optimum parting between stages of the summary heat dissipation from the charge air. - table, - ill., 3 ref.

Key words: engines.

A detailed characteristic is given of the system of an automation design of piston rings for tractor and combine engines — SAPR "Ring".

Key words: engines.

A multifunctional microprocessor control system is described having the feed back on detonation and oxigen composition in exhaust gases, speed stabilization at idling for 4-cylinder gasoline RIC engines, controlling phased fuel injection, ignition, builtin commutator in the control panel, developed on the base of the single-crystal microcomputer.

Key words: engines.

Investigation data are given on a mathematical model of the start process and the marine diesel engine acceleration, diesel engine operation for the fixed-pitch propeller and the analysis of variation of diesel engine operation parameters together with manoeuvrable ship characteristics. The more effective means to prevent thermal overloads is shown as the low rate of the task signal adjustment for the speed governor. The servomotor limiter of the governor on the predetermined speed, comparing with the charge air pressure limiter, in great extent guarantees the diesel engine protection against mechanical overload at the start and against thermal overload at the acceleration. Recommendations are given on the selection of protection device setting parameters.

Key words: engines.

Investigation results are given on definition of optimum structures to present unified technological processes in systems of the automation design of technological processes in order to decrease excess of the operation processing and increase of the automation system fast action. Criteria and optimization technique are considered.

Key words: engines.

A description is given as well as a diagram of the modernized chisel, its use can exclude the traumatism at the manual treatment of hard materials, and operating conditions can be improved.

Key words: engines.

Main constructive features are described of marine main low speed diesel engines K5SZ70/125V of the DMR Works (DDR). Features of their operation are considered, principles and nature of main failures and defects are analyzed. On the base of the operating conditions analysis a technique is given to evaluate the operating output and technical condition of GD on main operating parameters. Some recommendations are offered on how to increase the effectiveness of the operation of MOD type K5SZ70/125V on ships type motor-ship "Astrahan".

Key words: engines.

An original decision of the recovery task is offered on the engine working ability within the limits of expenses for the maintenance, they have to be less than at the traditional approach.

Key words: engines.

Theoretical premises are offered as well as ways of the quality control practical realization for the fuel equipment operation on the base of the vibration signal analysis, signal received from the feeding line surface, and non-uniformity of the fuel pump rack displacement.

Key words: engines.

A control algorithm is given for the fuel delivery in gasoline RIC engines with a feedback on the oxigen content in exhaust gases. Main parameters are described of the control process, their effect is considered on the feedback system operation. The reason is explained of the use of the fuel supply governor with a proportional link.

Key words: engine.

A problem is considered of the atmosphere contamination with toxical agents, contained in automobile RIC engine exhaust gases. One of main ways to improve ecologic parameters of the automobile transport is shown— this is development and use of gas-turbine engines. Main directions are formulated when solving these problems.

Key words: engine.

Main positions are described of the energetic analysis of the engine cylinder charge temperature condition effect, when the engine has a limited heat dissipation, on main parameters of the mixture forming process. On the base of the theoretical analysis conclusions can be made of possible variations in the mixture forming procedure in a heat isolated combustion chamber.