Research on the Parameter Calibration of the Internal-Combustion Engine Work Process Simulation Model

2011 ◽  
Vol 308-310 ◽  
pp. 953-961 ◽  
Author(s):  
Qing Yin Niu ◽  
Chao Fan ◽  
Xian Chen Wang ◽  
Yi Wu Zhao ◽  
Yu Cai Dong
Keyword(s):  
Internal Combustion Engine ◽  
Simulation Model ◽  
Ant Colony Algorithm ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Model Parameters ◽  
Automatic Calibration ◽  
Parameter Calibration ◽  
Work Process ◽  
Practical Result

The computer simulation technology of the work process of internal-combustion engine is the important measure to study the internal-combustion engine, but generally, because of the uncertainty of input parameters, the precision of the simulation model of the engine work process, which largely limits the application of the simulation model, so the parameters of the simulation model needs to be calibrated. Taking the work process of the certain one type turbocharging diesel engine as the example, and combining the genetic algorithm with the ant colony algorithm, the parameter combination which can satisfy the requirements of precision, is selected in this article to effectively reduce the simulation experiment times of parameter calibration, and realize the automatic calibration of the simulation model parameters. By comparing and analyzing the practical result of the experiment and the result of the simulation computation, the effectiveness of the algorithm has been validated in the article.

scholarly journals Use of electromechanical analogies in the construction and calculation of a simulation model of the process of torsional oscillations of the shaft line of an internal combustion engine

2021 ◽  
Vol 5 (2) ◽  
pp. 29-33
Author(s):  
Volodymyr Kononov ◽  
Olena Kononova ◽  
Yulia Musairova
Keyword(s):  
Internal Combustion Engine ◽  
Simulation Model ◽  
Elastic System ◽  
Combustion Engine ◽  
Dynamic Stiffness ◽  
Internal Combustion ◽  
Kinematic Scheme ◽  
Torsional Oscillations ◽  
Calculation Of Parameters ◽  
Shaft Line

The purpose of the article is to substantiate the possibility of using electromechanical analogies in the construction and calculation of parameters of the simulation model of the process of torsional oscillations of the internal combustion engine shaft, which will allow to move from mechanical models of shafts to their electrical counterparts. Results of the research. The article clarifies the relationship between phenomena occurring in mechanical and electrical systems, mechanical and electrical analogues are established, namely force is considered as electromotive force or voltage, velocity as current, moment of inertia as inductance, spring flexibility as capacitance, coefficient friction as electrical resistance, and the kinematic scheme of the shaft line is presented in the form of a diagram of a reactive bipolar, the parameters of which are determined during analytical calculations of the kinematic scheme of the elastic system. The concept of dynamic stiffness is introduced, which is similar to the concept of reactive resistance of a bipolar. The initial data for the calculation of a linear system in which it is assumed that the pliability of the shock absorber is zero. Conclusions. According to the results of the analogies, the parameters of the simulation model were obtained. The calculation of the elastic system using the method of electromechanical analogies allowed to build a simulation model of the shaft line of an internal combustion engine.

Simulation for the Combustion System Work Process in Internal Combustion Engine

2014 ◽  
Vol 644-650 ◽  
pp. 394-397
Author(s):  
Yan Shi ◽  
Yong Feng Liu ◽  
Xiao She Jia
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Single Injection ◽  
Combustion Process ◽  
Internal Combustion ◽  
Soot Emission ◽  
Cylinder Pressure ◽  
Combustion System ◽  
Work Process ◽  
Pressure Cylinder

In order to simulate the combustion system work process for an internal combustion engine accurately,the paper simulates the combustion process which based on the modified 4JB1 engine and used the KIVA-3V software. Variables such as cylinder pressure, cylinder temperature, NOX and SOOT emission are predicted and analyzed by using single injection strategy.It was found that the production of NOX begins from the moderate burning period, reaches a peak quickly and keep constant. The production of SOOT is mainly in the late of fast burning period to the moderate burning period and most of the SOOT is oxidized.

Fully Coupled Rigid Internal Combustion Engine Dynamics and Vibration—Part II: Model-Experiment Comparisons

2001 ◽  
Vol 123 (3) ◽  
pp. 685-692 ◽  
Author(s):  
D. M. W. Hoffman ◽  
D. R. Dowling
Keyword(s):  
Internal Combustion Engine ◽  
Model Experiment ◽  
Combustion Engine ◽  
Correlation Coefficients ◽  
Peak Torque ◽  
Internal Combustion ◽  
Engine Block ◽  
Model Parameters ◽  
Engine Vibration ◽  
Heavy Duty Diesel

In internal combustion engine vibration modeling, it is typically assumed that the vibratory state of the engine does not influence the loads transmitted to the engine block from its moving internal components. This one-way-coupling assumption leads to energy conservation problems and does not account for Coriolis and gyroscopic interactions between the engine block and its rotating and reciprocating internal components. A new seven-degree-of-freedom engine vibration model has been developed that does not utilize this assumption and properly conserves energy. This paper presents time and frequency-domain comparisons of this model to experimental measurements made on an inline six-cylinder heavy-duty Diesel engine running at full load at peak-torque (1200 rpm) and rated (2100 rpm) speeds. The model successfully predicts the overall features of the engine’s vibratory output with model-experiment correlation coefficients as high as 70 percent for vibration frequencies up through third engine order. The results are robust to variations in the model parameters. Predictions are less successful at the detail level and at higher frequencies because of uncertainties in the actual imperfections of the test engine, and because of the influence of unmodeled engine components.

Comparative Results of a Developed Vehicle Dynamic Model for a Sedan Electric Vehicle

2014 ◽  
Vol 71 (2) ◽  
Author(s):  
Md Nazri Othman ◽  
Nur Maisarah Mohd Sobran ◽  
Kasrul Abdul Karim ◽  
Ismadi Bugis ◽  
Auzani Jidin
Keyword(s):  
Internal Combustion Engine ◽  
Simulation Model ◽  
Electric Vehicle ◽  
Dynamic Model ◽  
Computer Modelling ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Vehicle Dynamic ◽  
Sustainability Issue ◽  
Vehicle Dynamic Model

The interest in electric vehicles (EVs) is significantly increased due to the awareness of internal combustion engine (ICE) effects towards the environmental and sustainability issue. In developing EVs projects, computer modelling of the vehicle dynamic and simulation can be utilized to estimate the battery power requirement and predict the optimum cruising strategies which in return will shorten the design development process and reduce the cost of prototyping. This paper presents the effectiveness of the vehicle dynamic simulation model  of a converted internal combustion engine vehicle PROTON SAGA sedan into a fully EV called EVerGREEN. The simulation model is set to analyse the effect of the vehicle dynamic parameters such as vehicle resistance and the motor characteristics in predicting the optimum driving profile. The development of the electric vehicle EVerGREEN is shortly presented together with the vehicle dynamic model. The driving performance is measured based on a real road test at F1 Sepang International Circuit and the results are validated by comparing between the simulation model and the actual drive test. Simulation and experimental results are shown to verify the effectiveness of the proposed model which shows a good agreement between them. Further works in enhancing the model effectiveness could be implemented by incorporating the battery characteristics and hence would provide better energy management for the vehicle.

Analysis and Simulation of an Oil Lubrication Pump for the Internal Combustion Engine

2013 ◽  
Author(s):  
Adolfo Senatore ◽  
Dario Buono ◽  
Emma Frosina ◽  
Luca Santato
Keyword(s):  
Internal Combustion Engine ◽  
Simulation Model ◽  
Combustion Engine ◽  
Experimental Tests ◽  
Internal Combustion ◽  
Oil Lubrication ◽  
Commercial Code ◽  
Depth Analysis ◽  
Pump Shaft ◽  
Lubrication Pump

This paper presents the simulation model of an oil lubrication gerotor pump for the internal combustion engine. The model was constructed by using a mono-dimensional commercial code taking into account all the phenomena that occur during the revolution of the pump shaft. First of all, several geometric considerations and theoretical observation are presented. An experimental campaign was also performed to validate the simulation model. In these experimental tests particular attention was regarded to the behavior of the pressure oscillations during the pump shaft revolutions. The final aim of this activity is to obtain an instrument that allows in-depth analysis of pump and lubrication circuit functioning and that can be coupled with other models (e.g. VVA, VVT, etc.) in order to take into account different problems of the hydraulic components of engines.

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