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SMAT2008E14STEADY-STATE ANALYSIS OF THE DISPLACEMENTS, STRESSESAND STRAINS FIELDS FOR AN INTERNAL COMBUSTION ENGINEUSING THE FINITE ELEMENT METHODClaudiu OBOGEANU 1 ,Marian POPESCU 2 , Gheorghe POPA 3 , Florentin POPESCU 4Abstract: A numerical analysis with finite elements method was performed in order to obtain thedisplacements, stresses and strains fields for a four-stroke engine mechanism. I have evolved and analysed thecomponents response of the engine mechanism. The steady-state analysis was developed for two rotational speedconditions. The numerical analysis was evolved for maximum acceleration condition. The research results will bemarked out in a proper graphical type of Ansys software.Keywords: engine mechanism, steady-state, acceleration, displacement, stress, strain.1 Claudiu OBOGEANU, Ph.D. Eng., Associate Professor, University of Craiova, Faculty ofMechanics, Automotive Engineering Department, obogeanu@hotmail.com.2 Marian POPESCU, Ph.D. Student, University Transilvania Brasov, Faculty of Mechanics.3 Gheorghe POPA, Ph.D. Student Eng., Associate Professor, University of Craiova, Faculty ofMechanics, Automotive Engineering Department4 Florentin POPESCU, Ph.D. Student, University Transilvania Brasov, Faculty of Mechanics.SMAT2008E12THE INFLUENCE OF ETHANOL-GASOLINE BLENDS ON SPARKIGNITION ENGINE OPERATION, PERFORMANCE AND EMISSIONCHARACTERISTICSDaniel MINIŞAN , Veneţia SANDUAbstract: The paper presents besides some technical aspects regarding the use of ethanol-gasoline blends in sparkignition engines some experimental determinations corresponding to the vehicle operation on conventional fuel and onethanol-gasoline blend containing 5% ethanol concentration.The technical aspects were focused on the chemical and physical properties like the density, the lower heatingvalue, octane number and volatility of the considered blend and the effect on these properties in respect to ethanolconcentration.Pollutants emissions were assessed with an NEDC (New European Driving Cycle) emission test performed on apassenger car being also assessed engine start-up time, oxygen sensor warm-up time and catalytic converter warm-uptime.Keywords: spark ignition engine, NEDC emission test, ethanol-gasoline blends, renewable fuels.Daniel MINIŞAN, Student, Road Vehicles and Engines Department, minisandaniel@yahoo.com,tel.0368438383.Veneţia SANDU, Associate Proffesor, PhD, Transylvania University Brasov, sandu@unitbv.ro,tel.026841292146
SMAT2008E11THE MATHEMATICAL SIMULATE AT TRANSIENT STATEOF DIESEL ENGINE FUNCTIONNeculai Iurea* Alexandru Dragalina* Ionel Apostol*Abstract: The river and sea ships are equipped with a complex energetic apparatuses form by many componentswhich interact between in working time. Each of these components has particular static and dynamic properties whichensure optimal function of the engine. The main purpose for mathematical simulate is to provide a highlight analyticalway of some difficult aspect specific for diesel engine function. At the same time, mathematics is putting at thescientist’s hand methods of analyze to give a strong explanation of the causes and effects of the less known aspects ofthe diesel engine exploitation. The mathematical simulate is based on existence of some similarities between the studyof two objects. If between these two objects we can establish at least one similarity-then we can say there is a relationbetween the real system and his model. The function in transient state of speeding of the diesel engines, made for shippropulsion, knows at least three directions:• the engine function simulate, through a thermodynamically research inside of the engine cylinder;• the engine function simulate, through an automatically system research;• the engine function simulate, through an engine and his equipment dynamic research.Keywords: naval diesel engine, energy, energy balance, transient state of speeding, mathematicalsimulate/design, controlling system, electromechanical action, dynamic, effectiveness, function of transfer.• Neculai Iurea, commander drd eng.., The School of Naval Petty Officers „Admiral IonMurgescu”, Constanta, Dezrobirii no.80, tel.0241655650, int.0248, e-mailiureaneculai@yahoo.com;• Alexandru Dragalina, captain prof.ph.d.eng., the Naval Academy “Mircea the Elder”,Constanta, Fulgerului no.1, tel.0241626200, int.1211, e-mail dradid@seanet.ro;• Ionel Apostol, drd. eng., the “Transilvania” University, Braşov, tel. 0268413000, int.173, e-mail ionelapostol@gmail.comSMAT2008E16THE ANALYSE OF THE COMMAND SYSTEM FOR ADAPTIVEADMISSION IN INSERTION PROCESS OF FUNCTIONING AT HEATENGINESMarinică STAN, Dinel POPAAbstract: The paper presents aspects concerning the calculus of the feeding time of the command system, and thecalculus of the displacement period of the piston at an insertion process of functioning.Keywords: command system, engines, adaptive admission, piston, hydraulic.Marinică STAN, Prof. PhD. Eng., University of Piteşti, Applied Mechanics Department, e-mailstan_mrn@yahoo.com, 0248/217736.Dinel POPA, Prof. PhD. Eng., University of Piteşti, Applied Mechanics Department, e-maildinel_popa@yahoo.com, 0248/217736.47
Page 7 and 8: SMAT2008V14AUTOMOTIVE DEPORTANTE WI
Page 9 and 10: SMAT2008V18ROAD DYNAMIC EXPERIMENTA
Page 11 and 12: SMAT2008V22STUDY CONCERNING FRACTIO
Page 13 and 14: Consideration on the distribution o
Page 15 and 16: SMAT2008V30THE MODAL POWER ASPECTS
Page 17 and 18: SMAT2008V33THE OPTIMIZATION OF THE
Page 19 and 20: SMAT2008V37COUPLED MULTIBODY - FINI
Page 21 and 22: SMAT2008V41THE VALIDATION BY EXPERI
Page 23 and 24: SMAT2008V45GENERAL ALGORITHM FOR DE
Page 25 and 26: 29SMAT2008V48DEVELOPMENT OF INFORMA
Page 27 and 28: SMAT2008 V52THE ACTUAL STATE OF DEV
Page 29 and 30: SMAT2008V57COMPARATIVE PRACTICAL ST
Page 31 and 32: SMAT2008T01INVESTIGATIONS CONCERNIN
Page 33 and 34: SMAT2008T05NO-TILL RESEARCH RESULTS
Page 35 and 36: SMAT2008T10THE FINIT ELEMENT METHOD
Page 37 and 38: SMAT2008E03THE INFLUENCE OF BIODIES
Page 39 and 40: SMAT2008E06FUNCTIONING CONDITIONS O
Page 41: SMAT2008E09EXPERIMENTAL RESULTS CON
Page 45 and 46: SMAT2008E15THE LPG USE IN DIESEL EN
Page 47 and 48: SMAT2008E20EXAUST EMISSIONS OF DIFF
Page 49 and 50: SMAT2008E24VVA FOR A SPARK IGNITION
Page 51 and 52: SMAT2008E27ESTIMATION BY CALCULATIO
Page 53 and 54: SMAT2008M04INFLUENCE OF THE PARTICL
Page 55 and 56: STUDY ON VEGETAL OILS CHARACTERISTI
Page 57 and 58: SMAT2008M13NITINOL: PROPERTIES AND
Page 59 and 60: SMAT2008M17EFFECTS OF QUENCING AND
Page 61 and 62: SMAT2008M21CONSIDERATIONS ON THE CO
Page 63 and 64: SMAT2008M25ABOUT OF THE INFLUENCE O
Page 65 and 66: SMAT2008M29ERROR ON THE GEOMETRICAL
Page 67 and 68: SMAT2008M33STANDPOINTS REGARDING DE
Page 69 and 70: SMAT2008M37EFFECT OF STIFFNESS UNCE
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Page 73 and 74: SMAT2008R03URBAN AREAS CHEMICAL POL
Page 75 and 76: SMAT2008R07RESEARCH REGARDING THE V
Page 77 and 78: SMAT2008R11ANALYSIS REGARDING THE P
Page 79 and 80: SMAT2008R15VEHICLE DYNAMIC BEHAVIOU
Page 81 and 82: SMAT2008R18STUDY REGARDING THE ROAD
Page 83 and 84: SMAT2008R20INFLUENCE OF THE HUMAN E
Page 85 and 86: SMAT2008R24RESEARCH CONCERNING DETE

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