Download or read book Transient Optimization of a Medium Duty Diesel Engine Equipped with a High Pressure EGR and Variable Nozzle Turbocharger written by Justin Brett Pennington and published by . This book was released on 2016 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: A medium-duty diesel engine is equipped with a High Pressure EGR (Exhaust Gas Recirculation) and a VNT (Variable Nozzle Turbine) and coupled to an AC Dynamometer. The control of the HPEGR and VNT will be optimized during steady state and transient engine operation to lower nitric oxide and particulate matter production as well as fuel consumption. Brake specific particulate matter, nitric oxide, and fuel consumption will be recorded with fast measurement systems capable of capturing results of transient events. A steady state map of engine speed and load will be used to calibrate initial VNT and EGR control. The calibration will be optimized with a defined formula using emissions production and fuel consumption. After a steady state VNT and HPEGR map is created, the map will be used as a baseline in transient engine operation. The dissertation will contain three parts. Firstly, VNT and HPEGR control assigned via the steady state table will be used during transient events, which will then be increased in speed from a 10 second to a 2 second event. Secondly, the VNT and EGR control will be manually configured in attempt to improve engine performance throughout the transient. Finally, the VNT and EGR control will be applied before the transient event to inspect the effect on engine performance.
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.
Download or read book Experimental Study of Transition of Transient Emmisions in Turbocharged High Speed Direct Injection HSDI Diesel Engines written by Hyungsuk Kang and published by . This book was released on 2007 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transient Comparison of High Pressure and Hybrid EGR Strategies on a Light Duty Diesel Engine Using Low Temperature Combustion written by David J. Heuwetter and published by . This book was released on 2012 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimization of Heavy duty Diesel Engine Operating Parameters at High Speed and Medium Load Using mu genetic Algorithms written by Mike P. Liechty and published by . This book was released on 2004 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Direct Injection Combustion Engine Technologies and Development written by H Zhao and published by Elsevier. This book was released on 2009-12-18 with total page 761 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 2 of the two-volume set Advanced direct injection combustion engine technologies and development investigates diesel DI combustion engines, which despite their commercial success are facing ever more stringent emission legislation worldwide. Direct injection diesel engines are generally more efficient and cleaner than indirect injection engines and as fuel prices continue to rise DI engines are expected to gain in popularity for automotive applications. Two exclusive sections examine light-duty and heavy-duty diesel engines. Fuel injection systems and after treatment systems for DI diesel engines are discussed. The final section addresses exhaust emission control strategies, including combustion diagnostics and modelling, drawing on reputable diesel combustion system research and development. Investigates how HSDI and DI engines can meet ever more stringent emission legislation Examines technologies for both light-duty and heavy-duty diesel engines Discusses exhaust emission control strategies, combustion diagnostics and modelling
Download or read book An Investigation Into Optimization of Heavy duty Diesel Engine Operating Parameters when Using Multiple Injections and EGR written by David T. Montgomery and published by . This book was released on 2000 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Model based Control of a Turbocharged Diesel Engine with High and Low pressure Exhaust Gas Recirculation written by Matthias Patrick Alexander Mrosek and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Transient Emissions and Mixed Mode Combustion for a Light Duty Diesel Engine written by Jonathan L. Burton and published by . This book was released on 2008 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Index abstracts of SAE Technical Papers written by and published by . This book was released on 2007 with total page 1218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technologies and Approaches to Reducing the Fuel Consumption of Medium and Heavy Duty Vehicles written by National Research Council and published by National Academies Press. This book was released on 2010-07-30 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technologies and Approaches to Reducing the Fuel Consumption of Medium- and Heavy-Duty Vehicles evaluates various technologies and methods that could improve the fuel economy of medium- and heavy-duty vehicles, such as tractor-trailers, transit buses, and work trucks. The book also recommends approaches that federal agencies could use to regulate these vehicles' fuel consumption. Currently there are no fuel consumption standards for such vehicles, which account for about 26 percent of the transportation fuel used in the U.S. The miles-per-gallon measure used to regulate the fuel economy of passenger cars. is not appropriate for medium- and heavy-duty vehicles, which are designed above all to carry loads efficiently. Instead, any regulation of medium- and heavy-duty vehicles should use a metric that reflects the efficiency with which a vehicle moves goods or passengers, such as gallons per ton-mile, a unit that reflects the amount of fuel a vehicle would use to carry a ton of goods one mile. This is called load-specific fuel consumption (LSFC). The book estimates the improvements that various technologies could achieve over the next decade in seven vehicle types. For example, using advanced diesel engines in tractor-trailers could lower their fuel consumption by up to 20 percent by 2020, and improved aerodynamics could yield an 11 percent reduction. Hybrid powertrains could lower the fuel consumption of vehicles that stop frequently, such as garbage trucks and transit buses, by as much 35 percent in the same time frame.
Download or read book Diesel Emissions and Their Control written by Magdi K Khair and published by SAE International. This book was released on 2006-12-01 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will assist readers in meeting today's tough challenges of improving diesel engine emissions, diesel efficiency, and public perception of the diesel engine. It can be used as an introductory text, while at the same time providing practical information that will be useful for experienced readers. This comprehensive book is well illustrated with more than 560 figures and 80 tables. Each main section is broken down into chapters that offer more specific and extensive information on current issues, as well as answers to technical questions.
Download or read book Exhaust Gas Recirculation Control Method for Heavy duty Diesel Engines Under Transient Operations written by Kazuyuki Narusawa and published by . This book was released on 1990 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Performance Turbocharging of a DI Diesel Engine by Use of a Variable Geometry Turbine written by Ralf Barkhage and published by . This book was released on 1995 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cost Effectiveness and Deployment of Fuel Economy Technologies for Light Duty Vehicles written by National Research Council and published by National Academies Press. This book was released on 2015-09-28 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt: The light-duty vehicle fleet is expected to undergo substantial technological changes over the next several decades. New powertrain designs, alternative fuels, advanced materials and significant changes to the vehicle body are being driven by increasingly stringent fuel economy and greenhouse gas emission standards. By the end of the next decade, cars and light-duty trucks will be more fuel efficient, weigh less, emit less air pollutants, have more safety features, and will be more expensive to purchase relative to current vehicles. Though the gasoline-powered spark ignition engine will continue to be the dominant powertrain configuration even through 2030, such vehicles will be equipped with advanced technologies, materials, electronics and controls, and aerodynamics. And by 2030, the deployment of alternative methods to propel and fuel vehicles and alternative modes of transportation, including autonomous vehicles, will be well underway. What are these new technologies - how will they work, and will some technologies be more effective than others? Written to inform The United States Department of Transportation's National Highway Traffic Safety Administration (NHTSA) and Environmental Protection Agency (EPA) Corporate Average Fuel Economy (CAFE) and greenhouse gas (GHG) emission standards, this new report from the National Research Council is a technical evaluation of costs, benefits, and implementation issues of fuel reduction technologies for next-generation light-duty vehicles. Cost, Effectiveness, and Deployment of Fuel Economy Technologies for Light-Duty Vehicles estimates the cost, potential efficiency improvements, and barriers to commercial deployment of technologies that might be employed from 2020 to 2030. This report describes these promising technologies and makes recommendations for their inclusion on the list of technologies applicable for the 2017-2025 CAFE standards.
Download or read book Coordinated Control of the Turbo Electrically Assisted Variable Geometry Turbocharged Diesel Engine with Exhaust Gas Recirculation written by Bradley C. Glenn and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: This work investigates the improvements in NOx emissions for a variable geometry turbo (VGT) charged diesel engine with exhaust gas recirculation (EGR) when electric assist is applied to the turbo-compressor. The method relies on selecting a fixed air to fuel ratio (AFR) above the no visible smoke limit that and regulating to that AFR. Simulated NOx emission results for the electrically assisted VGT engine w/ no EGR are first compared to a conventional VGT-EGR diesel engine. Then EGR control is added to the electrically assisted system and its influence on the electric assist system is studied. The control problem related to the complex gas exchange process in a Variable Geometry Turbocharged (VGT) diesel engine with Exhaust Gas Recirculation (EGR) has been proposed. The underlying assumptions regarding the sensor set to be used, however, are often not aligned with production intent goals for industrial applications. One such assumption is the availability of an exhaust gas pressure sensor. The exhaust gas pressure measurement is essential for the prediction of the flow rates over the EGR valve and the VGT vane. Additionally assumptions are often made regarding the availability of the air mass fraction in the intake and/or exhaust gas mixtures through a wide band oxygen sensor, commercially known as the Universal Exhaust Gas Oxygen (UEGO) sensor. While the appropriate sensors do exist, cost and reliability issues often force engine manufacturers and OEM's to preclude one or more of these sensors from the production intent sensor set. It therefore becomes essential to find alternate means of predicting these state variables and control inputs. In order to circumvent the assumption that all the state variables and control inputs are available, observers for the exhaust manifold pressure and the air mass fractions in the in the intake, and exhaust manifolds are proposed. A mean value diesel engine model is used and the performance of the observers is validated against data from a 2.4L Fiat VGT-EGR diesel engine.
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.
