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Untersuchung Zur Reduzierung Der Partikelemissionen An Ottomotoren Mit Direkteinspritzung
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Book Synopsis Experimental Investigations on Particle Number Emissions from GDI Engines by : Markus Bertsch
Download or read book Experimental Investigations on Particle Number Emissions from GDI Engines written by Markus Bertsch and published by Logos Verlag Berlin GmbH. This book was released on 2016-12-31 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis discusses experimental investigations to reduce particle number emissions from gasoline engines with direct injection. Measures on a single cylinder research engine with combined usage of a particle number measurement system, a particle size distribution measurement system as well as optical diagnostics and thermodynamic analysis enable an in-depth assessment of particle formation and oxidation. Therefore, numerous optical diagnostic techniques for spray visualisation (Mie-scattering, High-Speed PIV) and soot detection (High-Speed-Imaging, Fiber optical diagnostics) are deployed. Two injectors with different hydraulic flows but identical spray-targeting are characterised and compared by measurements in a pressurised chamber. The operation at higher engine load and low engine speed is in the focus of the experimental work at the engine test bench. Thereby, the low flow velocities in the combustion chamber, caused by the low engine speed, as well as the large amount of fuel injected are major challenges for the mixture formation process. A substantial part of the thesis thus focusses on the detailed analysis of the mixture formation process, which is consisting of fuel injection, interaction of the in-cylinder charge motion with the fuel injected and the fuel properties. Measures for the optimisation of the mixture formation process and the minimisation of the particle number emissions are analysed and evaluated. The charge motion is manipulated by the impression of a directed flow, the variation of the valve timings and valve open curve. The injection process is influenced by a reduction of the hydraulic flow of the injector and an increase of the injection pressure up to 50 MPa. The investigations show fundamental effects and potentials of different variation parameters concerning their emissions reduction potential at the exemplary operation at high engine load. Due to the simultaneous analysis of the in-cylinder charge motion and a thermodynamic analysis, the results can be transferred to different engines.
Book Synopsis Proceedings of the 2nd Conference on Engine Processes by : Sens, Marc
Download or read book Proceedings of the 2nd Conference on Engine Processes written by Sens, Marc and published by Universitätsverlag der TU Berlin. This book was released on 2015-10-30 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the combustion engine looks set to remain the dominant energy conversion unit in vehicle powertrains in the medium term, either in combination with electrical components or on its own, attention will need to be paid to continue improving its efficiency in the future. The high development depth of today's combustion engines means that it is becoming increasingly difficult to achieve significant efficiency improvements by simple means. On the search for these improvements, the focus has shifted to inner-engine processes, for instance charge cycles including the charging system, the mixture formation including injection, combustion and kinematic conversion of the energy within the fuel. Our 2nd conference 'Engine processes' aims to offer all developers a platform to discuss the latest technological developments in the field of inner-engine process control, and encourage new paths to be taken. We believe that the program for this conference is a sound foundation for this endeavour. Da der Verbrennungsmotor auch mittelfristig die dominierende Energiewandlungseinheit im Antriebsstrang von Kraftfahrzeugen sein wird, entweder im Verbund mit elektrischen Komponenten oder aber als alleiniger Antrieb, muss der Verbesserung von dessen Wirkungsgrad auch in Zukunft erhebliche Aufmerksamkeit zu Teil werden. Aufgrund der hohen Entwicklungstiefe, die heutige Verbrennungsmotoren aufweisen, wird es immer schwerer, deutliche Wirkungsgradverbesserungen auf einfachem Weg zu erreichen. Auf der Suche nach diesen Verbesserungen rücken die innermotorischen Prozesse immer mehr in den Fokus, hierzu zählen der Ladungswechsel inkl. Aufladesystem, die Gemischbildung inkl. Einspritzung, die Verbrennung sowie die kinematische Wandlung der im Kraftstoff gebundenen Energie. Unsere 2. Tagung „Motorische Prozesse“ soll nun allen Entwicklern als Austauschforum zu neuesten technologischen Entwicklungen auf dem Gebiet der innermotorischen Prozessführung dienen und dazu anregen neue Wege zu beschreiten. Wir sind überzeugt, mit dem vorliegenden Tagungs-Programm hierzu einen sehr guten Beitrag leisten zu können.
Book Synopsis Variable Ventilsteuerung by : Stefan Pischinger
Download or read book Variable Ventilsteuerung written by Stefan Pischinger and published by expert verlag. This book was released on 2002 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Propulsion Fundamentals by : James F. Connors
Download or read book Propulsion Fundamentals written by James F. Connors and published by . This book was released on 1968 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Untersuchung innermotorischer Einflussgrößen auf die Partikelemission eines Ottomotors mit Direkteinspritzung by : Helge Dageförde
Download or read book Untersuchung innermotorischer Einflussgrößen auf die Partikelemission eines Ottomotors mit Direkteinspritzung written by Helge Dageförde and published by Logos Verlag Berlin GmbH. This book was released on 2015-09-30 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Die Dissertation behandelt die Auswirkungen innermotorischer Einflussgrößen auf die Partikelemissionen eines Ottomotors mit Direkteinspritzung. Im Fokus der Arbeit stehen sowohl die Ermittlung der Ursachen von Partikelemissionen als auch die Ableitung möglicher Maßnahmen zu ihrer Reduktion. Dazu stellt die detaillierte Betrachtung der Gemischbildung als Summe aus Ladungsbewegung, Kraftstoffeinbringung sowie Kraftstoffbeschaffenheit einen wesentlichen Teil der Arbeit dar. Zunächst wird die Gemischbildung und Verbrennung in Voruntersuchungen an einem Einhubtriebwerk mit Hilfe umfassender optischer Messtechnik analysiert. Neben etablierten Messmethoden wie Schattenrissaufnahmen und Particle Image Velocimetry wird während der Verbrennung die Zwei-Farben-Pyrometrie verwendet. Um auch eine räumliche Zuordnung der mit ihr analysierten Rußstrahlung zu ermöglichen, wird die Messtechnik zu einer zweidimensionalen Messmethode erweitert. Die Untersuchungen identifizieren den Grad der Bauteilbenetzung, die Gemischhomogenisierung, den Brennverlauf sowie den Ort der Entflammung als die wesentlichen das Rußeigenleuchten beeinflussenden Faktoren. Die motorischen Untersuchungen werden an einem Einzylinder-Forschungsmotor in drei zyklusrelevanten Betriebspunkten durchgeführt. Es werden verschiedene Faktoren systematisch auf Ihren Einfluss auf die Partikelbildung und -oxidation diskutiert. Zur innermotorischen Analyse kommen erneut optische Messtechniken zum Einsatz. Im Abgas wird neben gasförmigen Schadstoffen die Partikelanzahlkonzentration gemessen sowie in ausgewählten Untersuchungen auch die Morphologie und chemische Zusammensetzung der Partikel analysiert. Ergänzend zu den bereits am Einhubtriebwerk identifizierten Partikeleinflussgrößen zeigen sich Ablagerungen im Brennraum (speziell an der Injektorspitze) sowie Öleintrag in den Brennraum als potenzielle Partikelquellen. Abschließend wird auf Basis der gewonnenen Erkenntnisse am Beispiel des Katalysatorheizbetriebs das Potenzial verschiedener applikativer Maßnahmen zur Darstellung eines niedrigen Partikelausstoßes bei gleichzeitig geringen gasförmigen Emissionen und Verbrennungsschwankungen dargestellt.
Book Synopsis Handbook of Diesel Engines by : Klaus Mollenhauer
Download or read book Handbook of Diesel Engines written by Klaus Mollenhauer and published by Springer Science & Business Media. This book was released on 2010-06-22 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This machine is destined to completely revolutionize cylinder diesel engine up through large low speed t- engine engineering and replace everything that exists. stroke diesel engines. An appendix lists the most (From Rudolf Diesel’s letter of October 2, 1892 to the important standards and regulations for diesel engines. publisher Julius Springer. ) Further development of diesel engines as economiz- Although Diesel’s stated goal has never been fully ing, clean, powerful and convenient drives for road and achievable of course, the diesel engine indeed revolu- nonroad use has proceeded quite dynamically in the tionized drive systems. This handbook documents the last twenty years in particular. In light of limited oil current state of diesel engine engineering and technol- reserves and the discussion of predicted climate ogy. The impetus to publish a Handbook of Diesel change, development work continues to concentrate Engines grew out of ruminations on Rudolf Diesel’s on reducing fuel consumption and utilizing alternative transformation of his idea for a rational heat engine fuels while keeping exhaust as clean as possible as well into reality more than 100 years ago. Once the patent as further increasing diesel engine power density and was filed in 1892 and work on his engine commenced enhancing operating performance.
Book Synopsis Soot Formation in Combustion by : Henning Bockhorn
Download or read book Soot Formation in Combustion written by Henning Bockhorn and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soot Formation in Combustion represents an up-to-date overview. The contributions trace back to the 1991 Heidelberg symposium entitled "Mechanism and Models of Soot Formation" and have all been reedited by Prof. Bockhorn in close contact with the original authors. The book gives an easy introduction to the field for newcomers, and provides detailed treatments for the specialists. The following list of contents illustrates the topics under review:
Book Synopsis Methanol: The Basic Chemical and Energy Feedstock of the Future by : Martin Bertau
Download or read book Methanol: The Basic Chemical and Energy Feedstock of the Future written by Martin Bertau and published by Springer Science & Business Media. This book was released on 2014-02-18 with total page 699 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methanol - The Chemical and Energy Feedstock of the Future offers a visionary yet unbiased view of methanol technology. Based on the groundbreaking 1986 publication "Methanol" by Friedrich Asinger, this book includes contributions by more than 40 experts from industry and academia. The authors and editors provide a comprehensive exposition of methanol chemistry and technology which is useful for a wide variety of scientists working in chemistry and energy related industries as well as academic researchers and even decision-makers and organisations concerned with the future of chemical and energy feedstocks.
Book Synopsis Combustion Engines Development by : Günter P. Merker
Download or read book Combustion Engines Development written by Günter P. Merker and published by Springer Science & Business Media. This book was released on 2011-09-24 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion Engines Development nowadays is based on simulation, not only of the transient reaction of vehicles or of the complete driveshaft, but also of the highly unsteady processes in the carburation process and the combustion chamber of an engine. Different physical and chemical approaches are described to show the potentials and limits of the models used for simulation.
Book Synopsis Knocking in Gasoline Engines by : Michael Günther
Download or read book Knocking in Gasoline Engines written by Michael Günther and published by Springer. This book was released on 2017-11-21 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book includes the papers presented at the conference discussing approaches to prevent or reliably control knocking and other irregular combustion events. The majority of today’s highly efficient gasoline engines utilize downsizing. High mean pressures produce increased knocking, which frequently results in a reduction in the compression ratio at high specific powers. Beyond this, the phenomenon of pre-ignition has been linked to the rise in specific power in gasoline engines for many years. Charge-diluted concepts with high compression cause extreme knocking, potentially leading to catastrophic failure. The introduction of RDE legislation this year will further grow the requirements for combustion process development, as residual gas scavenging and enrichment to improve the knock limit will be legally restricted despite no relaxation of the need to reach the main center of heat release as early as possible. New solutions in thermodynamics and control engineering are urgently needed to further increase the efficiency of gasoline engines.
Book Synopsis Ignition Systems for Gasoline Engines by : Michael Günther
Download or read book Ignition Systems for Gasoline Engines written by Michael Günther and published by Springer. This book was released on 2016-11-18 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume includes selected and reviewed papers from the 3rd Conference on Ignition Systems for Gasoline Engines in Berlin in November 2016. Experts from industry and universities discuss in their papers the challenges to ignition systems in providing reliable, precise ignition in the light of a wide spread in mixture quality, high exhaust gas recirculation rates and high cylinder pressures. Classic spark plug ignition as well as alternative ignition systems are assessed, the ignition system being one of the key technologies to further optimizing the gasoline engine.
Book Synopsis Gasoline Engine with Direct Injection by : Richard van Basshuysen
Download or read book Gasoline Engine with Direct Injection written by Richard van Basshuysen and published by Vieweg+Teubner Verlag. This book was released on 2014-10-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct injection spark-ignition engines are becoming increasingly important, and their potential is still to be fully exploited. Increased power and torque coupled with further reductions in fuel consumption and emissions will be the clear trend for future developments. From today’s perspective, the key technologies driving this development will be new fuel injection and combustion processes. The book presents the latest developments, illustrates and evaluates engine concepts such as downsizing and describes the requirements that have to be met by materials and operating fluids. The outlook at the end of the book discusses whether future spark-ignition engines will achieve the same level as diesel engines.
Book Synopsis A Novel Process for the Production of Diesel Fuel Additives by Hierarchical Design by : Jakob Burger
Download or read book A Novel Process for the Production of Diesel Fuel Additives by Hierarchical Design written by Jakob Burger and published by . This book was released on 2012 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis HCCI and CAI Engines for the Automotive Industry by : Hua Zhao
Download or read book HCCI and CAI Engines for the Automotive Industry written by Hua Zhao and published by CRC Press. This book was released on 2007-09-10 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: Homogeneous charge compression ignition (HCCI)/controlled auto-ignition (CAI) has emerged as one of the most promising engine technologies with the potential to combine fuel efficiency and improved emissions performance, offering reduced nitrous oxides and particulate matter alongside efficiency comparable with modern diesel engines. Despite the considerable advantages, its operational range is rather limited and controlling the combustion (timing of ignition and rate of energy release) is still an area of on-going research. Commercial applications are, however, close to reality. HCCI a.
Book Synopsis Urea-SCR Technology for deNOx After Treatment of Diesel Exhausts by : Isabella Nova
Download or read book Urea-SCR Technology for deNOx After Treatment of Diesel Exhausts written by Isabella Nova and published by Springer Science & Business Media. This book was released on 2014-03-14 with total page 715 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urea-SCR Technology for deNOx After Treatment of Diesel Exhausts presents a complete overview of the selective catalytic reduction of NOx by ammonia/urea. The book starts with an illustration of the technology in the framework of the current context (legislation, market, system configurations), covers the fundamental aspects of the SCR process (catalysts, chemistry, mechanism, kinetics) and analyzes its application to useful topics such as modeling of full scale monolith catalysts, control aspects, ammonia injections systems and integration with other devices for combined removal of pollutants.
Book Synopsis Diesel Engine Combustion Processes by :
Download or read book Diesel Engine Combustion Processes written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reducing Particulate Emissions in Gasoline Engines by : Thorsten Boger
Download or read book Reducing Particulate Emissions in Gasoline Engines written by Thorsten Boger and published by . This book was released on 2018 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book encompasses the current strategies and technologies used to reduce particulates to meet regulatory requirements and curtail health hazards -- reviewing principles and applications of these techniques.
