Read more at official project website: www.diesel-rk.com
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DIESEL-RK is a full-cycle thermodynamic engine simulation software
It is designed for simulating and optimizing the working processes of two- and four-stroke internal combustion engines with all types of boosting.
The program can be used for modeling the following types of engines:
- DI Diesel engines, including PCCI and engines fueled by biofuels.
- SI petrol engines.
- SI gas engines, including prechamber systems, and engines fueled by different gases: Methane, Propane-Butane, Biogas, Wood gas, Syngas, etc.
- Two-stroke engines with uniflow and loop scavenging, opposed-piston engines (OP or Junkers engines), and OPOC engines.
- Dual fuel engines (engines having several independent fuel injection systems for different fuels). (Engines with RCCI)
DIESEL-RK is a thermodynamic tool: engine cylinders are considered open thermodynamic systems.
Possible applications include:
- Fuel consumption prediction and optimization.
- Torque curve and other engine performance predictions.
- Combustion and emission analysis, including PCCI / HCCI.
- Dual fuel engine mixture formation and combustion analysis.
- Knock prediction.
- Valve timing optimization, including VVA optimization for every operating mode.
- EGR analysis and optimization.
- Turbocharger and bypasses matching and optimization.
- Conversion of diesel engines into gas engines.
- Cooperation with different modeling tools: Simulink, IOSO NM, etc.: DIESEL-RK solver can be run under the control of other applications.
Main features
Main features of program DIESEL-RK are similar to known programs: WAVE (Ricardo Software), GT-Power (Gamma Technologies) and BOOST (AVL).
However, together with conventional abilities, the program DIESEL-RK has new advanced features:
- RK-model : is a multi-zone diesel fuel spray mixture formation and combustion model.
- Fuel Spray Visualization tool (easy flat and advanced 3D).
- Multiparametric and multidimensional optimization of engines parameters. A target function including NOx, Soot and SFC simultaneously may be calculated as inside DIESEL-RK, as with User Defined procedure being done as DLL and linked with DIESEL-RK kernel. 1D and 2D parametrical researches procedures.
- Detail Kinetic Mechanism of NO formation (199 reactions, 33 species) is implemented for PCCI, multiply injection and high EGR analysis. (Zeldovich mechanism does not work correctly at large EGR and multiple injection. One shows too small emission in comparison with experimental data.)
- DIESEL-RK support simulation of water injection and account H2O condensation and evaporation in intake manifold, port and cylinder.
RK-model simulates mixture formation and combustion taking into account:
- Piston Bowl Shape: any geometrical shapes can be specified and saved into the piston bowl data base which already includes the most common geometries;
- Different Swirl Profiles and swirl intensity;
- Sprayer Location: central, non-central, side injection, few sprayers;
- Number, Diameter and Direction of sprayer nozzles (each sprayer may have nozzles with different diameters and arbitrary orientation);
- Fuel Properties, including bio-fuels and blends of bio-fuels with diesel oil (data base of fuels is supported);
- Shape of injection profile including multiple injection and PCCI; Optimization of injection profile flanks shape; Optimization of Multiple Injection Strategy;
- Detail Chemistry is calculated at the Ignition Delay prediction for PCCI with diesel fuel and biofuel. RK-model accounts a CR high pressure effect on Ignition Delay;
- Low Temperature Combustion is modeled at PCCI and HCCI;
- Interaction of the Sprays with Walls and with other Neighboring Sprays (as on wall, as in volume);
- Local Temperature of the wall in the region of impingement the sprays with a wall.
The RK-model has a capability to optimize the piston bowl shape and fuel injection system parameters (sprays directions, diameter and number of nozzles) as well as to develop multiple injection strategy and the Common Rail controlling algorithm over the whole operating range.
Fuel Spray Visualization
The DIESEL-RK includes "Fuel Spray Visualization" code. This code allows engineers to present in the animation picture format the results of modeling of interaction of the fuel spray with combustion chamber walls, air swirl and with neighboring sprays. The code assists in choosing the best shape of the piston bowl and select the diameter, the number and the directions of injector nozzles for a given injection duration and swirl intensity. Results of simulation can be saved as Windows graphic files, AVI or animated GIF files. Visualization is possible as flat picture, as in 3D.
3D visualization of sprays evolution in cylinder of two-stroke low speed large marine diesel engine
3D tool allows analyze spatial evolution as of all sprays, as of one or few sprays. Visualization tool has capabilities to mark each characteristic zone of every spray by specific bullets to observe the volumes where sprays impinge walls and disturb each other in volume or near the wall. The combustion model accounts effect of these zones on Heat Release Rate. The real shape of piston bowl and cylinder cover is accounted at simulation and visualization. This function is very important for optimization of combustion in large marine two-stroke diesel engines with side injection system.
In the pictures the sprays spatial intersection zones are shown by light green bullets.
In case you haven’t found the answer for your question please feel free to contact us, our customer support will be happy to help you. Read more at official project website: www.diesel-rk.com