Applied software DIESEL-2/4t
Capabilities and structure
|Advanced features||Calculation models||Special capabilities||You can use software...
|Examples of the results|
DIESEL-RK: is a new generation of DIESEL-2/4t software with Windows XP interface.
- 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.
|Help system of DIESEL-RK will help you to
review software interfacing and abilities
|(4.5 Mb) Download|
|DIESEL-4t User's Guide
(Adobe Acrobat Reader document, ZIP archive)
|(2.5 Mb) 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.
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.)
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 %.)
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.
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 amount of empirical coefficients is not great, and they are strictly constant for any operating regimes of engine and for any its configuration.
Remote access to the DIESEL-RK software
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.
|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.|
|Analysis of allocation of injected fuel in characteristic zones of combustion chamber for diesel engines with different conditions of a mixture formation.|
|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.|
|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.|
Multiparametric optimization of a medium-speed marine diesel at increase its capacity.
|The chief of the project:
Dr. Andrey S. Kuleshov
Tel. +07 (095) 265-78-92; 263-68-41;
A.S. Kuleshov, Piston Engines Department (E-2), MSTU,
2-Baumanskaya, 5, Moscow, 105007, Russia.