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Motor Vehicle Dynamics and Construction

http://auto.unitbv.ro/SAVAT/php/index.php?cat=p3&titl=Dinamica

Areas of activity, research objectives Key words

Calculus and measurement of motor vehicle performances (dynamics, fuel consumption, comfortability, stability, handling)

Modeling and simulation of motor vehicle’s systems functioning (drivetrain, tires, suspension, steering, brakes)

Analysis of the vehicle’s vibrations and noises On-board systems for driver’s assistance and information

drivetrain, motor vehicle dynamics, tires, suspension, steering, brakes, vibrations, noises, modeling, simulation, data acquisition and processing, GPS

Research group profile

In the current form, the research group was created in the year 2006 to carry out the activities conducted in two CEEX research contracts (ECO-VEH and SAIGHID), but continues a long research tradition supported by numerous contracts in collaboration with the automotive industry in the country. The purpose of this group is to keep the main study direction of the previous Motor Vehicle and Engines Department, the forerunner of the present Automotive and Transportation Department. The research team, including either experienced teachers and doctoral-, master- and diploma-students, aimed at sharing knowledge and developing new skills in this area. The staff main competences cover the following main areas: motor vehicle’s construction, design, calculus and dynamics; test instrumentation and data acquisition; techniques for experimental data processing and measurement errors calculation; motor vehicle’s testing; analysis and mitigation of shocks, vibrations and noises; modern systems for driver’s assistance and information.

R&D products, patents, use cases

1. Space-speed-time measuring system (fifth wheel type and GPS based). 2. New methods for the acquisition and processing of the data recorded using the GPS technologies and vehicle’s CAN Bus, original software for the estimation of vehicle’s maximal performances and usage statistics. 3. Method for the estimation of the vehicle’s driving resistances based on cost-down (free running) process records. 4. Algorithms for the simulation of the tires behavior. 5. Algorithms for the calculation of motor vehicle’s performances. 6. Simulation of the motor vehicle’s systems functioning. 7. Calculation of the vehicle’s components overload and fatigue. 8. Simulation of the driver behavior at various maneuvers.

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Completed and ongoing research projects at national and international level

1. The Educational formation and research interdisciplinary platform named SAVAT – Sisteme AVansate pentru Autovehicule and Transport Rutier (2006-2008) included the program „Motor Vehicle Dynamics and Intelligent Control Systems” (Dinamica autovehiculelor şi sisteme inteligente de control), where different researches are carried out by doctoral and post-doctoral students, as well as students of the masters courses Management of the Vehicle-Road Interaction and Information and Communication System for Motor Vehicles. The laboratories feature modern equipment and computers for data acquisition and processing.

2. SAIGHID – The project Advanced information and route guidance system for vehicle drivers and travelers, using digital maps (http://www.saighid.ro/index.php) was carried out in the years 2006-2008, being coordinated by the Romanian Organization for the Implementation of Intelligent Transport Systems – ITS Romania, Bucureşti. The project defined advanced information and guidance services for the drivers using digital maps and GPS/GALILEO positioning systems and developed the current digital map of Romania (http://romaniadigitala.ro/). Also, it has been developed a pilot system for the testing of database and guiding-information services, and it has developed a national network of university research in the ITS field. The project enabled the improvement of the laboratory infrastructure with GPS positioning equipment used to obtain geographic positioning data.

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3. ECO-VEH – The project Advanced real-time control algorithms for hybrid vehicles optimization (http://iota.ee.tuiasi.ro/~eco-veh/) was carried out in the years 2006-2008, being coordinated by the "Gh. Asachi" Technical University of Iaşi. In the project frame, modelling and conceptual optimization of hybrid vehicles were conducted, and then were achieved and implemented original control algorithms for hybrid-electric vehicles, that were proved on the test bench. The project enabled the improvement of the laboratory infrastructure with equipment such as GPS and CAN-bus Data Acquisition System – Racelogic-vBox, Data Acquisition and Processing Mobil System – LMS-Scadas Test.Xpress and with SolidWorks CAD modeling software.

4. EXPCVT – Research on intelligent control of a CVT-based hybrid-electric propulsion system (http://www.cnmp.ro:8083/pncdi2/program4/documente/2010/sedinta/rez/D7/72209.pdf) was a project carried out in the years 2008-2011, being coordinated by the University of Piteşti. It aimed the design and the implementation of an experimental control system based on fuzzy logic, intended for a hybrid-electric propulsion system that incorporates a friction continuous variable transmission (CVT) and aiming the optimal management of its energy sources. The project enabled the improvement of the laboratory infrastructure with a TREK-550-GA0E – Vehicle Computing Box data acquisition system for motor vehicles.

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The laboratory has modern data acquisition and processing devices of interest to study the vehicles’ dynamic behavior: velocity, acceleration, torsion moment (torque), steering-wheel angle, yaw angle, pitch angle, roll angle, relative movement between the wheels and body. It allows the following types of tests: pulling away, maximal speed, braking, vehicle dynamic response, handling, vibrational comfort, driving effort, noise measurements. Several computer programs, allowing the simulation of vehicles functioning, were also realized and can be used for the study of different vehicle configurations.

Research team:

Prof.dr.eng. Ion PREDA

Prof.dr.eng. Gheorghe CIOLAN

Prof.dr.eng. Valeriu ENACHE

Prof.dr.eng. Ovidiu CÂMPIAN

Lect.dr.eng. Mihai DOGARIU

Dr.eng.

Dinu COVACIU Lect.dr.eng.

Daniel TRUŞCĂ Assist.eng.

Dragoş Sorin DIMA Lect.dr.eng.

Radu TOGĂNEL Assoc.prof.dr.eng. Adrian ŞOICASL

Selection of 7 recent representative publications of the research group 1. Covaciu D., Preda I., Ciolan Gh.: GPS based data acquisition system for mobile applications. The Fourth Győr Sympsium on

Computational Intelligence, 22-23 Sept. 2011. 2. Dogariu M., Ispas N.: Experimental researches regarding the possibility of automation of a conventional gearbox. International

Congress on Automotive and Transport Engineering CONAT 2010, Braşov, Romania XI-th Edition 3. Enache V.: Correlation Car Body – Antenna for Good Reception in Communication and Entertainment. International Congress CONAT

Brasov 2010, cod lucrare CONAT20104057 4. Preda I., Ciolan Gh.: Theoretical Aspects on the Multi-Regime Friction CVTs’ Dynamical Behavior. International Conference Motor

Vehicle & Transportation MVT2012 Timisoara, paper 1029. 5. Preda I., Ciolan, Gh.: Vehicle mathematical model for the study of cornering. Annals of the Oradea University. Fascicle of Management

and Technological Engineering, Volume XI (XXI), 2012, Nr. 2/1.22-32. ISSN 1583 – 0691. 6. Preda I., Covaciu D., Ciolan Gh., Florea D.: Driving-Data Based Study on the Recuperative Potential of Hybrid Vehicles. The Xth

International Automotive Congress CAR 2011, paper 1158, Piteşti, 2011. 7. Truşcă D., Şoica A., Benea B., Târulescu S.: Computer Simulation and Experimental Research of the Vehicle Impact. WSEAS

Transactions on Computers, Issue 7, Volume 8, July 2009.

Contact

Name: Prof.dr.ing. Ion PREDA Position: Coordinator of the Automotive Engineering (in English) study program email: pion@unitbv.ro

web: http://auto.unitbv.ro/SAVAT/ Phone: +40 268 41 30 00 int. 173 Fax: +40 268 41 44 59 Location: Brasov, Str. Politehnicii 1-3, N Building, Room NP5 bis