Keywords: diesel engines.

New method is proposed of acoustic diesel finishing permitting in the range of frequencies 300—10 000Hz to reduce vibration, noise and vibration overload of components and systems. Method is realized by using computers and is based on using of experimental indicator diagrams of working process and damped oscillations of diesel construction.

Keywords: diesel engines.

It is defined by method of numerical modelling of working process the oppotunities and ways of reduction of specific fuel consumption of 4Ch22//24 and 4Ch 22/35 for 4—5 g/ (kV/h) by means of optimozation of maximum combustion pressure, compression ratio, pressure charging andraise of turbocharger efficiency.

Keywords: diesel engines.

Results are given of complex experimental investigation of crankshaft strength of manoeuvring diesels PDGIM, on the base of which measures connected with raising of crankshaft reliability by means of internal reserves are being elaborated and proposed.

Keywords: diesel engines.

Procedure is described of searching approximately optimum engine regulations taking into account unstable working conditions (European riding cycle) based on using special engine dynamic test bench. Results are given of realization of this procedure on VAZ-21083 engine.

Keywords: diesel engines.

Procedure is proposed of calculative investigations based on computer programmes of hydrodynamic calculations of diesel fuel equipment and mathematical modelling of diesel working cycle. Parameters are given of fuel pump diesel 8 FS 13/14 operation depending on rotational frequency of camshaft and crankshaft and HRFP rack coordinates recieved by means of calculations and also relationships, permitting to forecast the changes of parameters of fuel pump and diesel 8 FS 13/14 operation when the HRFP rack positioning error is in the range of 0—0,5 mm.

Keywords: diesel engines.

The quality differences are defined between dynamic closed diesel model based on differential equation system and traditional dynamic force model. The quantative differences of calculative results of two models are demonstrated on calculations of piston acceleration and load of main bearing.

Keywords: diesel engines.

Questions are considered of fuel and motor oil saving by autotrac tor engines by means of lubricating systems design improving, in particular, oil pump. Results are given of motorless test bed investigations of a new construction of oil pump, lubricating system with automatically changed delivery during autotractor engine operation. Conclusion is made of advisability of usage of pumps with automatically changed delivery in the lubricating system of ICengines.

Keywords: diesel engines.

Difference is shown of dynamic behaviour of isodrom feedback with idle and rotary throttles. Advantages are shown of power isodrom feedback over kinematic feedback. Advisability is estimated of hydraulic damping of valve plunger. It is recommended for improvement the governor response on the regimes of load drop and load raise to restrict the value of signal of isodrom feedback. Amplitude frequency characteristics of diesel installation with hydro- mechanical and electronic governors are compared.

Keywords: diesel engines.

Method is proposed of practical estimation of adjustment and Correction conditions of programme protection device of diesel engine from overload during fuel delivery depending on the value of charging air pressure. Experimental verification of the method was carried out according to exploitation observation for the operation regimes of the main marine engine 9 DKRN 80/160-4 with speed governor PGA-12.

Keywords: diesel engines.

Method is given of registration of speed/power characteristics of I? engine permitting to estimate the 1? engine state.

Keywords: diesel engines.

An article sums up long term experience of the creation of diesel installation with automatic control systems of technological operations of the object. Here is given a list of such operations which can be automized on high level of knowledge using up date technical means. The analysis is given of their advisability to be included in the systems of complex automation. The analysis includes the results of experts inquest

Keywords: diesel engines.

Results are given of the investigations of mechanical properties and wear-resistance of sintered material based on iron, including graphite, chrome, nickel and copper. It was defined that the properties of sintered material is influenced essentially by porosity necessary to, provide ring friction surfaces with fluid lubricating material.

Keywords: diesel engines.

Possibilities are investigated of combining the processes of metal local remelting by means of plasma arch and izothermic stamping in manufacturing of 1? engines pistons. It is defined that such combination permits to raise the mechanical properties of material in the zone of groove for top compression ring.

Keywords: diesel engines.

Ways are considered of recombination of wear components of automotive and tractor engines during maintenance. It was defined that in many cases labour cost and value could be reduced by means of engine construction improvement. Some design and technological improvements are recommended to be done during engine manufacturing.

Keywords: diesel engines.

Statistical data and analysis are given of usage of tractor engines cylinder banks as spare parts during three last decades. Concrete examples show the real ways of reduction the usage of cylinder banks as spare parts.

Keywords: diesel engines.

The problem is solved of defining the stressed-deformative conditions of main bearing cap and engine framework plate according to the method of finite elements in order to define displacements and contact stress on conjugated surfaces. As the result of calculations-defining of lower limit of fretting formation on contact surface.

Keywords: diesel engines.

Possible ways of designing automotive diesels for big transport buses and main motor-vehicle trains. Analysis shows the advisability of providing high reserve of torque for big transport buses. Examples are given of usage of diesel combined charging. One of the variants was tested on experimental diesel KAMAZ. For main motor vehicle trains the calculative analysis shows the advisability of usage a compaund installation including diesel with turbocharging and power turbine. It was considered the application on diesels the fuel delivery equipment of accumulative type with electrocontrolling hydraulic driven pumps-nozzles, electronic control system and also purification and neutrilization OG systems.