Μελέτη επιδόσεων και εκπομπών ρύπων ελαφρού πετρελαιοκίνητου φορτηγού με ηλεκτρικά υποβοηθούμενη στροβιλο-υπερπλήρωση κατά τη διάρκεια του Παγκοσμίου Κύκλου Πόλης WLTC

Μπαχτής, Χαράλαμπος; Bachtis, Charalampos

dc.contributor.author	Μπαχτής, Χαράλαμπος	el
dc.contributor.author	Bachtis, Charalampos	en
dc.date.accessioned	2018-11-26T12:02:46Z
dc.date.available	2018-11-26T12:02:46Z
dc.date.issued	2018-11-26
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/48120
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.15795
dc.rights	Default License
dc.subject	Μηχανή Εσωτερικής Καύσης	el
dc.subject	Ηλεκτρικά υποβοηθούμενη στροβιλο-υπερπλήρωση	el
dc.subject	Ανάκτηση ενέργειας	el
dc.subject	Μοντελοποίηση κινητήρα και οχήματος	el
dc.subject	Υβριδικά συστήματα	el
dc.subject	Internal Combustion engine	en
dc.subject	Electrically assisted turbocharger	en
dc.subject	Waste heat recovery	en
dc.subject	Engine and vehicle modeling engine	en
dc.subject	Hybrid systems	en
dc.title	Μελέτη επιδόσεων και εκπομπών ρύπων ελαφρού πετρελαιοκίνητου φορτηγού με ηλεκτρικά υποβοηθούμενη στροβιλο-υπερπλήρωση κατά τη διάρκεια του Παγκοσμίου Κύκλου Πόλης WLTC	el
heal.type	bachelorThesis
heal.classification	Μηχανές Εσωτερικής Καύσης	el
heal.classificationURI	http://data.seab.gr/concepts/c7c732b08ce25d214773f172fb19415f5f8461fb
heal.language	el
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2018-09-24
heal.abstract	Η διπλωματική εργασία αφορά την μελέτη της επίδρασης που έχει ένα σύστημα ηλεκτρικής υποβοήθησης (και ανάκτησης ενέργειας) της στροβιλο-υπερπλήρωσης στις επιδόσεις και στις εκπομπές ρύπων ελαφρού πετρελαιοκίνητου φορτηγού.	el
heal.abstract	Due to the continuous reduction of the CO2 emission standards, manufacturers of passenger cars and light-duty trucks have explored solutions that are mainly focused on turbocharging and downsizing of internal combustion engines (ICE). Start/stop systems as well as costlier full hybrid solutions and, more recently, Waste Heat Recovery technologies have also been proposed and realized. The latter include Thermo-Electric Generator (TEG), Organic Rankine Cycle (ORC) and Electric Turbo- Compound (ETC) that have been practically implemented on few heavy-duty applications but have not been proved yet as effective and affordable solutions for passenger cars. Concerning the downsizing concept, to maintain a reasonable power level in small engines, the application of turbocharging is mandatory both for Otto and Diesel engines. Following this aspect, the possibility to couple an electric motor to the turbocharger (electric turbo-compound) to recover the redundant energy of the exhaust gases is becoming more and more attractive. Todays’ vehicle industry is converging more and more to electrification of vehicles, introducing electrical architectures to cooperate side by side with the combustion engine. Furthermore, turbochargers often lack fast transient response due to the nature of the energy exchange with the engine, which deteriorates the vehicle’s drivability. An electrically- assisted turbocharger can also be used for improving the transient response without any parasitic losses to the engine while providing energy recovery for increasing overall system efficiency. This diploma thesis deals with the issue of electrically assisted turbocharging of a six-cylinder diesel engine used in a light-duty vehicle and the investigation of the engines’ performance and emissions during transient operating conditions through the GT-Power computational package (Gamma Technologies, Inc.). The main purpose of this study is to design the engine, the turbocharging system and the vehicle using the GT-Power computational package, which is a specialized software model with wide use in the industry. The process of studying the response and the emission estimation is accomplished for the newly established Worldwide Harmonized Light 11 Vehicle Test Cycle (WLTC), which has replaced NEDC since September 2017 in the certification of new passenger cars and light-duty trucks. The study of the model under different operating conditions is undertaken to understand and evaluate the performance of the engine and emission of pollutants from it. The emissions studied are the two main pollutants from diesel engines, nitrogen oxides (NOx) and soot, as well as carbon dioxide (CO2). Finally, the model of electrically assisted turbocharged diesel engine is compared to the corresponding model of simple turbocharged diesel engine during transient operating conditions; the latter is based on the same engine and was created during the elaboration of an earlier diplomatic thesis. This comparison aims to investigate the rate of improvement of pollutant emissions through the use of an electrically assisted turbocharger.	en
heal.advisorName	Γιακουμής, Ευάγγελος	el
heal.committeeMemberName	Χουντάλας, Δημήτριος	el
heal.committeeMemberName	Καρέλλας, Σωτήριος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Μηχανολόγων Μηχανικών. Τομέας Θερμότητας. Εργαστήριο Μηχανών Εσωτερικής Καύσης (ΜΕΚ)	el
heal.academicPublisherID	ntua
heal.numberOfPages	121 σ.
heal.fullTextAvailability	true