Instructions for Authors - Facultatea de Mecanica Craiova ...
Instructions for Authors - Facultatea de Mecanica Craiova ...
Instructions for Authors - Facultatea de Mecanica Craiova ...
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SMAT2008E24VVA FOR A SPARK IGNITION ENGINEMarcel LUPASCU, Constantin GRIGORESCU, Dumitru CRISTEA, Florin SERBAN,Vasile DUMITRESCUAbstract: At the present time the automotive industry promote in series production a generation ofVVT’s that employs the vane-type concept, using complex shaped components with tight tolerances. These<strong>de</strong>vices require materials which combine mo<strong>de</strong>rate strength and high wear resistance with the feasibility<strong>for</strong> mass-production, which in turn are best met by steels manufactured by the pow<strong>de</strong>r metallurgy (P/M)route. Without easy access to these technologies, the authors tried to test a simple way to continuouslyvary intake valve lift.Keywords: variable valve actuation, volumetric efficiency, valve lift, phasingLupascu Marcel, eng., Director of TLG SERV s.r.l., Fetesti, Phone 0722381310Grigorescu Constantin, eng., Prof., Highschool ‘Henri Coanda’, Rm. VALCEA, Phone 0721370377Cristea Dumitru, Dr. eng., Prof., University of Pitesti, Department of Automotive Engineering,E-mail:cristea.du@yahoo.com, Office Phone 0248217736Serban Florin, Dr. eng., Ass. Prof., University of Pitesti, Department of Automotive Engineering,E-mail:florin.serban@upit.ro, Office Phone 0248217736Dumitrescu Vasile, Dr. eng., Prof., University ‘Spiru Haret’, Bucuresti, E-mail:vdumitrescu@yahoo.com, Office Phone: 0248251000.CONSIDERATIONS REGARDING VVA REQUIREMENTSSMAT2008E25Marcel LUPASCU, Constantin GRIGORESCU, Dumitru CRISTEA, Florin SERBANAbstract: The <strong>de</strong>sign of an internal combustion (IC) engine is a complex compromise betweenper<strong>for</strong>mance, fuel economy and emissions, and VVA technologies are the helpful mo<strong>de</strong>rn solutions in thisarea. The authors tried to find the best requirements imposed to valve actuation mechanism with the goalto obtain as more advantages as possible.Keywords: variable valve actuation, volumetric efficiency, valve lift, phasingLupascu Marcel, eng., Director of TLG SERV s.r.l., Fetesti, Phone 0722381310Grigorescu Constantin, eng., Prof., Highschool ‘Henri Coanda’, Rm. VALCEA, Phone0721370377Cristea Dumitru, Dr. eng., Prof., University of Pitesti, Department of Automotive Engineering,E-mail:cristea.du@yahoo.com, Office Phone 0248217736Serban Florin, Dr. eng., Ass. Prof., University of Pitesti, Department of AutomotiveEngineering, E-mail:florin.serban@upit.ro, Office Phone 024821773653
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