Applied software  DIESEL-2/4t

Capabilities and structure

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Advanced features Calculation   models Special capabilities You can use software...
Remote Access
to DIESEL-RK
Examples of the results

DIESEL-RK: is a new generation of  DIESEL-2/4t software with Windows XP interface.

New features:
   - Calculation of NO emission is carried out by the newest technique with using of Zeldovich mechanism on the base of chemical equilibrium estimated by 18 component.
  - EGR system simulation.
  - High accuracy of diesel simulation over whole operating range.
  - Simulation of diesel combustion at split fuel  injection
  - Common Rail control algoritnm development.  

DIESEL-RK on the web.

New!

Help system of  DIESEL-RK will help you to review software interfacing and abilities
(ZIP archive)
(4.5 Mb) Download
   
DIESEL-4t User's Guide
(Adobe Acrobat Reader document, ZIP archive)
(2.5&nbspMb) Download
Report "Multiparametric diesel mixture formation and combustion optimizing with the purpose of emission level decreasing" Updated 16th Febr 2004
(Microsoft Power Point document, ZIP archive).
(With sound, 8.82 Mb) Download

(Slides only,1.87Mb) Download

    

The program DIESEL-2/4t is designed for simulating and optimizing  working processes of two- and four-stroke internal combustion engines with all kinds of turbocharging schemes. The program allows carrying out calculations for:

     The main capabilities of program DIESEL - 2/4t are similar to known programs WAVE (Ricardo) and BOOST (AVL). However, together with conventional abilities, the program DIESEL- 2/4t has new advanced abilities.

     The ability to optimize the shape of a piston bowl and fuel injection equipment of diesel engines by means of computer simulation.
    The simulation can be carried out very fast and without large expenditures. The program needs no a powerful productive computer.
    As a result of each calculation the information on the positive and negative factors of a progress  of each fuel jet, including the factors of interaction of jets among themselves outputs in a convenient form. (Example: The analysis of allocation of injected fuel in characteristic zones of  combustion chamber for diesel engines with different conditions of a mixture formation.) It allows step by step to carry out the optimum projection of a piston bowl and a construction of injector nozzles with the purpose to achieve the optimal conditions for a progress of fuel jets and minimum losses caused by interaction of jets among themselves.
     The software DIESEL-2/4t includes " Fuel Jet Visualization " code. This code allows in a pictorial form to analyze the animation picture of interaction of fuel jets with a combustion chamber walls, with swirl and among themselves. The code helps to design the shape of a piston bowl and select correctly the diameter, the amount and the directions of injector nozzles according to concrete characteristic of injection and swirl intensity.
     The efficiency of each solution is evaluated by specific fuel consumption, by level of soot emission and by level of nitrogen oxides emission. It is especially important at the modern tendencies stipulated by the requirements to lowering of emission of harmful substances:
   
- use of the open piston bowl and high compression ratio;
    - increase of the injection pressure;
    - decrease of the diameter of injector nozzles;
    - decrease of the rise of the injection pressure;
    - decrease of the injection lead.

   The program helps to optimize these measures and reduce to a minimum the increase of specific fuel consumption at decrease of NOx emission. (Example: Research with the purpose of decrease the NOx emission of a tractor diesel engine.)

 

   There is built-in program of multiparameter optimizing.
   Engineer - user can select the process which should be optimized, can select the independent parameters of optimization, can install the necessary limitations and can select the searching procedure.
     The library of searching procedures contains 14 methods of nonlinear programming. The optimization program allows to facilitate considerably the problem of operational development of engines, the problem of boosting, of turbocharging etc. (Example: Multiparametric optimization of a medium-speed marine diesel at increase its capacity by 25 %.)

Calculation model of turb-/super-charged internal combustion engine

     In the program DIESEL - 2/4t, the broad set of the numerical methods for simulation of different physical processes in an engine is used. The set and detailing of considered physical phenomena can be rated by the expert by means of the analysis of the input data list of the program.
     The brief exposition of the used numerical methods are presented below. The results which are obtained by these methods are given too. The choice of mathematical models is stipulated by the requirements of a high accuracy of results, high rate of calculation and universality. The last condition is a reason of refusal from empirical equations, which are correct only in narrow boundaries. Authors have preferred frequently laborious methods which consider the physical nature of phenomena in engines. A number of calculation methods was developed by authors of this project.

Special features of the program DIESEL-2/4t

Empirical coefficients, set-up of the program

      The program DIESEL-2/4t allows to simulate a working process of any type of internal combustion engines. Mathematical models featuring physical processes in engines, allows to achieve a high accuracy of results during numerical experiments.
      The experience of usage of the program DIESEL-2/4t with reference to engines with different size and assignment has shown that the program needs no preliminary set-up of used coefficients for a concrete engine. It is enough to use the set-up for analogous engine or “by default”.

      To obtain authentic calculation results, if you search for the ways of improvement of the engine performances or the ways of decrease of harmful materials emission, etc., it is expedient to carry out the comparison between calculated and measured data for a base engine configuration at several regimes. If necessary, it can carry out the additional set-up for a number of empirical coefficients.

      The amount of empirical coefficients is not great, and they are strictly constant for any operating regimes of engine and for any its configuration.

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          Remote access to the DIESEL-RK software

     Now the version of DIESEL-RK, which supports the operation with remote users permanently works on the server of Piston Engines Department. You can work with the program DIESEL-RK from your workstation already now. The necessary software for remote access can be loaded by user from the server.

Examples of the results

     The program DIESEL-2/4t has been developed for more than 15 years. For this time, it has been verified with reference to engines of different sizes, rapidity and assignment. The mathematical models are in progress permanently; a circle of the problems solved has been expanded. The results of calculation were compared with experimental data of many authors (mainly with data of manufacturers).
    Some examples of usage of the program are given below.

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   Calculation of parameters of the truck diesel KamAZ 7405 at the several operating regimes. Verification of the calculated data compared to experimental ones: integral parameters, curves of heat release, curves of pressure during combustion and gas exchange. The analysis of calculation results of   injected fuel allocation in characteristic zones.
push.gif (233 bytes)     Analysis of allocation of injected fuel in characteristic zones of  combustion chamber for diesel engines with different conditions of a mixture formation.
push.gif (233 bytes)    Calculation of a gas prechamber engine (diesel MTU 396 converted for operation on natural gas). Comparison between calculated and experimental curves of pressure in the cylinder.
push.gif (233 bytes)    Numerical research of possibility to decrease a level of NOx emission of diesel engine by means of optimization of the piston bowl shape, by veering fuel jets development, by decrease of injector nozzles diameter, by increase of the compression ratio, etc.
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   Multiparametric optimization of a medium-speed marine diesel at increase its capacity.

Our customers

     A lot of research projects was carried out  with code DIESEL-2/4t under the contracts with many companies - manufacturers of engines in Russia ("Kolomna plant", "GAZ", "KamAZ", "ZIL", "Zavolzhsky Engine Plant", "Vladimir plant", Yaroslavl "Autodiesel" etc.), with companies of aerospace branch (Ufa "Motor", "TsAGI", "Rybinsk Motors",   etc).  8 companies  - manufacturers of engines in Russia exploit the software DIESEL - 2/4t.

The chief of the project:
Dr. Andrey S. Kuleshov

Tel. +07 (095)  265-78-92;  263-68-41;
E-mail: kuleshov@power.bmstu.ru
A.S. Kuleshov,
Piston Engines Department (E-2), MSTU,
2-Baumanskaya, 5, Moscow, 105007, Russia.

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Last updated: May 29 2004.