Common Rail System for GDI Engines

Author: Giovanni Fiengo
Publisher: Springer Science & Business Media
ISBN: 1447144686
Format: PDF, ePub, Docs
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Progressive reductions in vehicle emission requirements have forced the automotive industry to invest in research and development of alternative control strategies. Continual control action exerted by a dedicated electronic control unit ensures that best performance in terms of pollutant emissions and power density is married with driveability and diagnostics. Gasoline direct injection (GDI) engine technology is a way to attain these goals. This brief describes the functioning of a GDI engine equipped with a common rail (CR) system, and the devices necessary to run test-bench experiments in detail. The text should prove instructive to researchers in engine control and students are recommended to this brief as their first approach to this technology. Later chapters of the brief relate an innovative strategy designed to assist with the engine management system; injection pressure regulation for fuel pressure stabilization in the CR fuel line is proposed and validated by experiment. The resulting control scheme is composed of a feedback integral action and a static model-based feed-forward action, the gains of which are scheduled as a function of fundamental plant parameters. The tuning of closed-loop performance is supported by an analysis of the phase-margin and the sensitivity function. Experimental results confirm the effectiveness of the control algorithm in regulating the mean-value rail pressure independently from engine working conditions (engine speed and time of injection) with limited design effort.

Ottomotor mit Direkteinspritzung

Author: Richard van Basshuysen
Publisher: Springer-Verlag
ISBN: 3658014083
Format: PDF
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Der Ottomotor mit Direkteinspritzung erlangt zunehmende Bedeutung. Dessen Potenzial ist bei weitem noch nicht ausgeschöpft, Leistungs- und Drehmomenterhöhung gepaart mit weiter reduziertem Kraftstoffverbrauch bei gleichzeitiger Schadstoffreduzierung geben klar die Richtung künftiger Entwicklungen vor. Als Schlüssel für diese Entwicklung können aus heutiger Sicht neue Einspritz- und Verbrennungsverfahren gelten, die den Technologieschub bewirken. Das Buch behandelt die neuesten Entwicklungen, beschreibt und bewertet Motorkonzepte, wie z.B. Downsizing und Aufladung und beschreibt die Anforderungen an Werkstoffe und Betriebsstoffe. Der Ausblick am Ende des Buches beleuchtet die Frage, ob Ottomotoren in Zukunft das Kraftstoff-Verbrauchsniveau von Dieselmotoren erreichen werden und ob alternative Antriebe Hubkolbenmotoren verdrängen werden. Für die 3. Auflage wurden Kapitel überarbeitet und aktualisiert. Des Weiteren wurde ein Abschnitt zur Vorentflammung und Flammenausbreitung bei Homogenbetrieb ergänzt.

Automotive Spark Ignited Direct Injection Gasoline Engines

Author: F. Zhao
Publisher: Elsevier
ISBN: 9780080552798
Format: PDF
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The process of fuel injection, spray atomization and vaporization, charge cooling, mixture preparation and the control of in-cylinder air motion are all being actively researched and this work is reviewed in detail and analyzed. The new technologies such as high-pressure, common-rail, gasoline injection systems and swirl-atomizing gasoline fuel injections are discussed in detail, as these technologies, along with computer control capabilities, have enabled the current new examination of an old objective; the direct-injection, stratified-charge (DISC), gasoline engine. The prior work on DISC engines that is relevant to current GDI engine development is also reviewed and discussed. The fuel economy and emission data for actual engine configurations have been obtained and assembled for all of the available GDI literature, and are reviewed and discussed in detail. The types of GDI engines are arranged in four classifications of decreasing complexity, and the advantages and disadvantages of each class are noted and explained. Emphasis is placed upon consensus trends and conclusions that are evident when taken as a whole; thus the GDI researcher is informed regarding the degree to which engine volumetric efficiency and compression ratio can be increased under optimized conditions, and as to the extent to which unburned hydrocarbon (UBHC), NOx and particulate emissions can be minimized for specific combustion strategies. The critical area of GDI fuel injector deposits and the associated effect on spray geometry and engine performance degradation are reviewed, and important system guidelines for minimizing deposition rates and deposit effects are presented. The capabilities and limitations of emission control techniques and after treatment hardware are reviewed in depth, and a compilation and discussion of areas of consensus on attaining European, Japanese and North American emission standards presented. All known research, prototype and production GDI engines worldwide are reviewed as to performance, emissions and fuel economy advantages, and for areas requiring further development. The engine schematics, control diagrams and specifications are compiled, and the emission control strategies are illustrated and discussed. The influence of lean-NOx catalysts on the development of late-injection, stratified-charge GDI engines is reviewed, and the relative merits of lean-burn, homogeneous, direct-injection engines as an option requiring less control complexity are analyzed.

Proceedings of the FISITA 2012 World Automotive Congress

Author: SAE-China
Publisher: Springer Science & Business Media
ISBN: 3642338283
Format: PDF, Kindle
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Proceedings of the FISITA 2012 World Automotive Congress are selected from nearly 2,000 papers submitted to the 34th FISITA World Automotive Congress, which is held by Society of Automotive Engineers of China (SAE-China ) and the International Federation of Automotive Engineering Societies (FISITA). This proceedings focus on solutions for sustainable mobility in all areas of passenger car, truck and bus transportation. Volume 6: Vehicle Electronics focuses on: •Engine/Chassis/Body Electronic Control •Electrical and Electronic System •Software and Hardware Development •Electromagnetic Compatibility (EMC) •Vehicle Sensor and Actuator •In-Vehicle Network •Multi-Media/Infotainment System Above all researchers, professional engineers and graduates in fields of automotive engineering, mechanical engineering and electronic engineering will benefit from this book. SAE-China is a national academic organization composed of enterprises and professionals who focus on research, design and education in the fields of automotive and related industries. FISITA is the umbrella organization for the national automotive societies in 37 countries around the world. It was founded in Paris in 1948 with the purpose of bringing engineers from around the world together in a spirit of cooperation to share ideas and advance the technological development of the automobile.

9 Tagung Diesel und Benzindirekteinspritzung 2014

Author: Helmut Tschöke
Publisher: Springer-Verlag
ISBN: 365807650X
Format: PDF
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Die Kraftstoffdirekteinspritzung ist beim Dieselmotor längst Stand der Technik und entwickelt sich beim Ottomotor mehr und mehr zum Standard. Ihre Funktion und optimale Anpassung an den Motor ist Voraussetzung zur Erfüllung zukünftiger Anforderungen hinsichtlich Kraftstoffverbrauch, CO2-, Schadstoff- und Geräuschemission sowie dem Betriebsverhalten. In Zusammenhang mit der intensiven Entwicklung von Downsizing-Konzepten und den zukünftigen Emissionsstandards ergeben sich sowohl für den Otto- als auch für den Dieselmotor neue Herausforderungen an die Gemischbildung und damit an die Einspritztechnik. Beim Ottomotor stehen dabei die Verbrennungsstabilität, die Erreichung der Grenzwerte für die Partikelanzahl und der CO2-Ausstoß, beim Dieselmotor die Schadstoffemissionsreduzierung im Vordergrund. Die Weiterentwicklung von Brennverfahren erfordert Maßnahmen an der Einspritztechnik selbst, den Einspritzstrategien sowie der Applikation. Die Auslegung der Injektoren ist nicht zuletzt aus Kostengründen Gegenstand von Forschung und Entwicklung. Beim Diesel- und besonders beim Ottomotor wird an der weiteren Steigerung der Einspritzdrücke und Verbesserung des dynamischen Verhaltens bei Mehrfacheinspritzung gearbeitet. Hinzu kommen zusätzliche Herausforderungen bezüglich Qualität und Lebensdauer sowie durch die Anwendung alternativer Kraftstoffe.

Modeling and Control of Engines and Drivelines

Author: Lars Eriksson
Publisher: John Wiley & Sons
ISBN: 1118536193
Format: PDF, Docs
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Control systems have come to play an important role in the performance of modern vehicles with regards to meeting goals on low emissions and low fuel consumption. To achieve these goals, modeling, simulation, and analysis have become standard tools for the development of control systems in the automotive industry. Modeling and Control of Engines and Drivelines provides an up-to-date treatment of the topic from a clear perspective of systems engineering and control systems, which are at the core of vehicle design. This book has three main goals. The first is to provide a thorough understanding of component models as building blocks. It has therefore been important to provide measurements from real processes, to explain the underlying physics, to describe the modeling considerations, and to validate the resulting models experimentally. Second, the authors show how the models are used in the current design of control and diagnosis systems. These system designs are never used in isolation, so the third goal is to provide a complete setting for system integration and evaluation, including complete vehicle models together with actual requirements and driving cycle analysis. Key features: Covers signals, systems, and control in modern vehicles Covers the basic dynamics of internal combustion engines and drivelines Provides a set of standard models and includes examples and case studies Covers turbo- and super-charging, and automotive dependability and diagnosis Accompanied by a web site hosting example models and problems and solutions Modeling and Control of Engines and Drivelines is a comprehensive reference for graduate students and the authors’ close collaboration with the automotive industry ensures that the knowledge and skills that practicing engineers need when analysing and developing new powertrain systems are also covered.