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Book Diesel Engine Transient Operation

Download or read book Diesel Engine Transient Operation written by Constantine D. Rakopoulos and published by Springer Science & Business Media. This book was released on 2009-03-10 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditionally, the study of internal combustion engines operation has focused on the steady-state performance. However, the daily driving schedule of automotive and truck engines is inherently related to unsteady conditions. In fact, only a very small portion of a vehicle’s operating pattern is true steady-state, e. g. , when cruising on a motorway. Moreover, the most critical conditions encountered by industrial or marine engines are met during transients too. Unfortunately, the transient operation of turbocharged diesel engines has been associated with slow acceleration rate, hence poor driveability, and overshoot in particulate, gaseous and noise emissions. Despite the relatively large number of published papers, this very important subject has been treated in the past scarcely and only segmentally as regards reference books. Merely two chapters, one in the book Turbocharging the Internal Combustion Engine by N. Watson and M. S. Janota (McMillan Press, 1982) and another one written by D. E. Winterbone in the book The Thermodynamics and Gas Dynamics of Internal Combustion Engines, Vol. II edited by J. H. Horlock and D. E. Winterbone (Clarendon Press, 1986) are dedicated to transient operation. Both books, now out of print, were published a long time ago. Then, it seems reasonable to try to expand on these pioneering works, taking into account the recent technological advances and particularly the global concern about environmental pollution, which has intensified the research on transient (diesel) engine operation, typically through the Transient Cycles certification of new vehicles.

Book Spark Ignition Engine Modeling and Control System Design

Download or read book Spark Ignition Engine Modeling and Control System Design written by Amir-Mohammad Shamekhi and published by CRC Press. This book was released on 2023-02-22 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a step-by-step guide to the engine control system design, providing case studies and a thorough analysis of the modeling process using machine learning, and model predictive control (MPC). Covering advanced processes alongside the theoretical foundation, MPC enables engineers to improve performance in both hybrid and non-hybrid vehicles. Control system improvement is one of the major priorities for engineers seeking to enhance an engine. Often possible on a low budget, substantial improvements can be made by applying cutting-edge methods, such as artificial intelligence when modeling engine control system designs and using MPC. This book presents approaches to control system improvement at mid, low, and high levels of control. Beginning with the model-in-the-loop hierarchical control design of ported fuel injection SI engines, this book focuses on optimal control of both transient and steady state and also discusses hardware-in-the-loop. The chapter on low-level control discusses adaptive MPC and adaptive variable functioning, as well as designing a fuel injection feed-forward controller. At mid-level control, engine calibration maps are discussed, with consideration of constraints such as limits on pollutant emissions. Finally, the high-level control methodology is discussed in detail in relation to transient torque control of SI engines. This comprehensive yet clear guide to control system improvement is an essential read for any engineer working in automotive engineering and engine control system design.

Book Turbocharger Integration into Multidimensional Engine Simulations to Enable Transient Load Cases

Download or read book Turbocharger Integration into Multidimensional Engine Simulations to Enable Transient Load Cases written by Andreas Kächele and published by Springer Nature. This book was released on 2019-11-29 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the increasing interest in multidimensional combustion engine simulation from researchers and industry, the field of application has been restricted to stationary operating points for turbocharged engines. Andreas Kächele presents a 3D-CFD approach to extend the simulation into the transient regime, enabling the detailed analysis of phenomena during changes in engine operating point. The approach is validated by means of a virtual hot gas test bench and experiments on a two-cylinder engine.

Book Computer Simulation Of Spark Ignition Engine Processes

Download or read book Computer Simulation Of Spark Ignition Engine Processes written by V. Ganesan and published by Universities Press. This book was released on 1996 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the theory and computer programs for the simulation of spark ignition (SI) engine processes. It starts with the fundamental concepts and goes on to the advanced level and can thus be used by undergraduates, postgraduates and Ph. D. scholars.

Book Analysis of the Performance of a Turbocharged S I Engine Under Transient Operating Conditions by Means of Fast Running Models

Download or read book Analysis of the Performance of a Turbocharged S I Engine Under Transient Operating Conditions by Means of Fast Running Models written by Federico Millo and published by . This book was released on 2013 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Modeling and Simulation of Knock and Nitric Oxide Emissions in Turbocharged Direct Injection Spark Ignition Engines

Download or read book Modeling and Simulation of Knock and Nitric Oxide Emissions in Turbocharged Direct Injection Spark Ignition Engines written by Dirk Linse and published by Cuvillier Verlag. This book was released on 2013-11-13 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Im Rahmen dieser Arbeit wurden neue Modelle entwickelt, um Stickoxidemissionen und Klopfen in turboaufgeladenen Ottomotoren mit Direkteinspritzung abbilden zu können. Das Klopfmodell basiert auf einer Zündfortschrittsvariable für das Transportgleichungen für den Favre-Mittelwert und die - Varianz hergeleitet worden sind. Die in diesen Gleichungen auftretenden mittleren chemischen Quellterme werden mittels einem „presumed PDF“ Ansatz für Temperatur und Mischungsbruch in Kombination mit tabellierter detaillierter Reaktionskinetik bestimmt. Mit diesem Klopfmodell lässt sich an jedem Ort im Brennraum die Selbstzündungswahrscheinlichkeit bestimmen. Zur Bestimmung der Stickoxidemissionen wurde ein neues Multizonenmodell hergeleitet. Damit lassen sich die Zonen auf das verbranntes Gemisch konditionieren, um dort die Stickoxidbildung mittels detaillierter Reaktionskinetik zu berechnen. Durch den Abgleich mit experimentellen Ergebnisse konnte gezeigt werden, dass das Klopf- und NOx-Modell in der Lage sind den mittleren Klopfzeitpunkt und Anzahl klopfender Arbeitsspiele bzw. die Stickoxidemissionen mit hinreichender Genauigkeit zu bestimmen.

Book Quasi Dimensional Simulation of Spark Ignition Engines

Download or read book Quasi Dimensional Simulation of Spark Ignition Engines written by Alejandro Medina and published by Springer Science & Business Media. This book was released on 2013-08-20 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the simulations developed in research groups over the past years, Introduction to Quasi-dimensional Simulation of Spark Ignition Engines provides a compilation of the main ingredients necessary to build up a quasi-dimensional computer simulation scheme. Quasi-dimensional computer simulation of spark ignition engines is a powerful but affordable tool which obtains realistic estimations of a wide variety of variables for a simulated engine keeping insight the basic physical and chemical processes involved in the real evolution of an automotive engine. With low computational costs, it can optimize the design and operation of spark ignition engines as well as it allows to analyze cycle-to-cycle fluctuations. Including details about the structure of a complete simulation scheme, information about what kind of information can be obtained, and comparisons of the simulation results with experiments, Introduction to Quasi-dimensional Simulation of Spark Ignition Engines offers a thorough guide of this technique. Advanced undergraduates and postgraduates as well as researchers in government and industry in all areas related to applied physics and mechanical and automotive engineering can apply these tools to simulate cyclic variability, potentially leading to new design and control alternatives for lowering emissions and expanding the actual operation limits of spark ignition engines

Book Energy Research Abstracts

Download or read book Energy Research Abstracts written by and published by . This book was released on 1986 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Computer Simulation of Turbocharged Spark Ignition Engines

Download or read book Computer Simulation of Turbocharged Spark Ignition Engines written by Che-Wun Hong and published by . This book was released on 1987 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Simulation Model for Transient Operation of Spark ignition Engines

Download or read book A Simulation Model for Transient Operation of Spark ignition Engines written by P. C. Baruah and published by . This book was released on 1990 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Use of a Thermodynamic Engine Cycle Simulation to Study a Turbocharged Spark ignition Engine

Download or read book Use of a Thermodynamic Engine Cycle Simulation to Study a Turbocharged Spark ignition Engine written by Vaibhav Lawand and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The second law analysis is a powerful tool for assessing the performance of engines and has been employed for few decades now. Turbocharged diesel engines have been explored in much detail with the help of second law analyses. There is also a need to examine the turbocharged spark-ignition engines in greater detail using second law analyses as they are gaining popularity in high performance and conventional automobiles as well. A thermodynamic simulation was developed in order to investigate the effects of turbocharging on spark-ignition engines from second law perspective. The exergy values associated with the components of the turbocharger along with the engine components were quantified as a percentage of fuel exergy. The exergy balance values indicated that turbocharger does not add considerably to the overall irreversibilities and combustion irreversibility is still the major source of exergy destruction. A comprehensive parametric investigation was also performed to investigate the effects of compression ratio, intercooler effectiveness, etc. for the turbocharged spark-ignition engine over the entire load and speed range. The simulation studies helped in understanding the behavior of turbocharged spark-ignition engine with these parameters. A simulation study was also performed to compare the turbocharged engine with the naturally aspirated spark-ignition engine. This study examined the engines for operating parameters like bmep and bsfc over the entire speed range and revealed that turbocharging offers higher bmep and lower bsfc values for most of the operating range. In an additional study, these engines were analyzed for the brake thermal efficiency values at part load. The results indicated that turbocharging offers marginally higher brake thermal efficiency at part loads.

Book Energy Research Abstracts

Download or read book Energy Research Abstracts written by and published by . This book was released on 1986-04 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt: