MULTIDISCIPLINARY UNIVERSITY 1962 2013 11 Faculties Faculty of Mechanics and Technology, Faculty of Electronics, Communications and Computers, Faculty of Sciences, Faculty of Mathematics, Faculty of Letters, Faculty of Social Sciences, Faculty of Economics, Faculty of Law and Administration, Faculty Physical Education and Sports, Faculty of Theology, Faculty of Education Sciences ~ 12 000 students in bachelor and master degrees, ~ 200 PhD students, 2013 Teaching & Research personal ( ~ 600 persons) o r g a n i z e THE ONE DAY SCIENTIFIC WORKSHOP e n t i t l e d Variable Valve Actuation (VVA). A technique towards more efficient engines 18 April 2013 University of Pitesti, Romania Amphitheatre CC1, B-dul Republicii nr. 71, Pitesti OPENING SPEECHES Mihai BRASLASU – Vice Rector of the University of Pitesti, Romania Thierry MANSANO – Head of Engine Calibration Department of Renault Technologie Roumanie (DCMAP - RTR) Pierre PODEVIN – Cnam Paris, LGP2ES, EA21, France. Co-organizer Adrian CLENCI – Head of Automotive and Transports Department – University of Pitesti, Romania. Organizer o r g a n i z e THE ONE DAY SCIENTIFIC WORKSHOP e n t i t l e d Variable Valve Actuation (VVA). A technique towards more efficient engines 18 April 2013 University of Pitesti, Romania Amphitheatre CC1, B-dul Republicii nr. 71, Pitesti PROGRAMME 10h00 – 11h00: Giovanni CIPOLLA, Politecnico di Torino, Italy, former GM Powertrain. Variable Valve Actuation (VVA): why? 11h00 – 12h00: Eduard GOLOVATAI SCHMIDT, Schaeffler Technologies AG, Germany. Consistent Enhancement of Variable Valve Actuation (VVA) 12h00 – 13h30: Lunch Break 14h00 – 15h00: Stéphane GUILAIN, Renault France, Powertrain Design and Technologies Division. VVT/VVA and Turbochargers: which synergies can we expect from these technologies? 15h00 – 16h00: Hubert FRIEDL, AVL GmbH Austria, Powertrain Systems Passenger Cars. Trends in Applications of VVA Systems for Fuel Efficient Powertrain 16h00 – 16h30: Coffee Break 16h30 – 17h30: Romain Le FORESTIER, VOLVO Powertrain, France. Advanced combustion and heavy duty engine integration of a hydraulic camless system 17h30 – 18h30: Adrian CLENCI, University of Pitesti, Romania, Pierre PODEVIN, Le Cnam de Paris, France. VVA technique as a way to improve Spark Ignition Engine efficiency. Results obtained at the University of Pitesti The Scientific Workshop Variable Valve Actuation (VVA). A technique towards more efficient engine WHY ORGANISING? The Scientific Workshop Variable Valve Actuation (VVA). A technique towards more efficient engine HISTORY of VARIABLE VALVE ACTUATION at UNIVERSITY of PITESTI 1977: a mechanical cam phasing device (VVT) applied on the gasoline engine of the 4WD ARO vehicle by Professor Vasile Dumitrescu and his team; 1977 - 1990: various VVA solutions were created and tested by Professor Vasile Dumitrescu and his team 1985 - 1990: various VVA solutions by Professor Dumitru Cristea and his team: - variable intake valve lift mechanism by rocker arm’s variable length; - cylinder deactivation by intake&exhaust valves deactivation 1985 – present: several Continuous Variable intake Valve Lift mechanisms were developed by Professor Vasile Hara and his team The Scientific Workshop Variable Valve Actuation (VVA). A technique towards more efficient engine Variable intake Valve Lift by Professor Vasile Hara and his team UNIVERSITY of PITESTI & le Cnam de Paris 1985 – 1990: 2 engine prototypes (4 in-line cylinders gasoline engine) were built with the aid of Dacia plant 2005: re-launching the research on ViVL by Hara&Clenci in cooperation with le cnam de Paris A carburetor engine featuring A single point injection engine featuring manual actuation of intake valve law automatic actuation of intake valve law The Scientific Workshop Variable Valve Actuation (VVA). A technique towards more efficient engine Variable intake Valve Lift by Professor Vasile Hara and his team UNIVERSITY of PITESTI & le Cnam de Paris March 2006: successful operational tests of the throttle-less engine at idle operation The single point injection engine featuring throttle-less control thanks to the ViVL Stable idle operation @ 800 rpm & λ = 1.6 (lean mixture) The Scientific Workshop Variable Valve Actuation (VVA). A technique towards more efficient engine Variable intake Valve Lift by Professor Vasile Hara and his team UNIVERSITY of PITESTI and le Cnam de Paris October 2006 - August 2007: adaptation of a multi-port fuel injection system (intake and exhaust on the same side of the cylinder head) The Scientific Workshop Variable Valve Actuation (VVA). A technique towards more efficient engine Variable intake Valve Lift by Professor Vasile Hara and his team UNIVERSITY of PITESTI and le Cnam de Paris 2008: adaptation of the prototype ViVL engine on a Dacia Logan car Ecologic Vehicle by Intake Throttle-less Actuation The Scientific Workshop Variable Valve Actuation (VVA). A technique towards more efficient engine Variable intake Valve Lift by Professor Vasile Hara and his team UNIVERSITY of PITESTI and le Cnam de Paris September 2012 – April 2013: adaptation of a crossflow engine head (hemispheric combustion chamber) The Scientific Workshop Variable Valve Actuation (VVA). A technique towards more efficient engine Variable intake Valve Lift by Professor Vasile Hara and his team UNIVERSITY of PITESTI and le Cnam de Paris 1985 - ……. - present A side mounted camshaft and An overhead camshaft version featuring A crossflow engine head featuring a side overhead valves version featuring bowl-in piston combustion chamber mounted camshaft and overhead valves version wedge type combustion chamber featuring pent-roof combustion chamber o r g a n i z e THE ONE DAY SCIENTIFIC WORKSHOP e n t i t l e d Variable Valve Actuation (VVA). A technique towards more efficient engines 18 April 2013 University of Pitesti, Romania Amphitheatre CC1, B-dul Republicii nr. 71, Pitesti PROGRAMME 10h00 – 11h00: Giovanni CIPOLLA, Politecnico di Torino, Italy, former GM Powertrain. Variable Valve Actuation (VVA): why? 11h00 – 12h00: Eduard GOLOVATAI SCHMIDT, Schaeffler Technologies AG, Germany. Consistent Enhancement of Variable Valve Actuation (VVA) 12h00 – 13h30: Lunch Break 14h00 – 15h00: Stéphane GUILAIN, Renault France, Powertrain Design and Technologies Division. VVT/VVA and Turbochargers: which synergies can we expect from these technologies? 15h00 – 16h00: Hubert FRIEDL, AVL GmbH Austria, Powertrain Systems Passenger Cars. Trends in Applications of VVA Systems for Fuel Efficient Powertrain 16h00 – 16h30: Coffee Break 16h30 – 17h30: Romain Le FORESTIER, VOLVO Powertrain, France. Advanced combustion and heavy duty engine integration of a hydraulic camless system 17h30 – 18h30: Adrian CLENCI, University of Pitesti, Romania, Pierre PODEVIN, Le Cnam de Paris, France. VVA technique as a way to improve Spark Ignition Engine efficiency. Results obtained at the University of Pitesti Equipe d’accueil EA21 Chimie moléculaire, génie des procédés et énergétique Le 18 avril 2013 Le directeur M. le professeur Ionel DIDEA Recteur de l'Université de Pitesti 1, Targu Din Vale ‐ Pitesti 11040 ‐ Arges Objet : Variable Valve Actuation (VVA), A technique towards more efficient engines 18 April 2013 at the University of Pitesti, Romania M. le Recteur, Mesdames, Messieurs et chers collègues, Cher Mesdames et Messieurs, Je voudrais remercier l'Université de Pitesti et particulièrement A. Clenci de nous associer a cette manifestation. L’agence d’évaluation de la recherche et l’enseignement supérieur français (AERES) a également encouragé début 2013 notre laboratoire à amplifier encore les synergies communes à nos établissements. La réduction de consommation de carburant est un objectif primordial de 1er plan. La distribution variable (VVA) er constitue l’une des possibilités opérationnelles pour améliorer les performances du moteur et réduire les émissions Je vous souhaite un excellent « work shop » qui constitue un événement de 1 plan et qui sans nul doute sera suivi de polluantes. nouvelles actions internationales pérennes communes à l’ensemble de la profession. Vous pouvez compter sur mon appui actif et de celui de l’ensemble du laboratoire. A l'instigation du département Automobiles et Transports de l'Université de Pitesti et de l’équipe de turbomachines et Je vous souhaite, M. le recteur, mesdames, Messieurs et chers collègues un excellent séminaire. moteurs du Cnam, une collaboration entre nos établissements a été engagée dès 1999 dans le domaine des moteurs à combustion interne et des machines thermiques appliqués au transport de surface. Bien cordialement, Georges Descombes Le fruit de cette collaboration a significativement été développé et confirmé au cours de la décennie écoulée par des Paris, le 18 avril 2013 conventions cadre reconduites régulièrement entre nos deux établissements en adéquation avec nos missions respectives : la formation à distance, la recherche technologique et l’innovation, la diffusion de la culture scientifique et technique. Recherche et diffusion des connaissances La participation au titre de chercheurs associés de l’Université de Pitesti à notre laboratoire (EA21) est soutenue par nos établissements qui se sont impliqués dans ces programmes en finançant plusieurs brevets. Deux thèses en cotutelle ont également été soutenues (2006 et 2012). Ces travaux conduisent régulièrement à des publications communes et à des communications dans des congrès internationaux. Il convient de souligner deux conférences réalisées dans le cadre des visioconférences annuelles organisées par le Cnam et ayant pour