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Author : Harmit Juneja
Publisher :
ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.:/5 (89 download)
Download or read book Injection Rate-shape Optimization as a Means of Controlling Comustion of Diesel Sprays written by Harmit Juneja and published by . This book was released on 2003 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CALIBRATION AND INJECTION RATE SHAPING APPROACHES USING 1D HYDRAULIC DIESEL INJECTOR MODELING FOR GASOLINE COMPRESSION IGNITION APPLICATIONS written by and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : The gasoline compression ignition (GCI) works on the principle of harnessing the benefits of light distillates in a compression ignition (CI) engine. Recent research has shown that along with air management and after-treatment systems; fuel systems also play a vital role in enabling GCI technology. The injector in the fuel injection system (FIS) is a key component driving the efficiency of the combustion phenomena. Subsequently, injection strategies, characteristics, and overall injection quality influence the combustion process and controls certain metrics like fuel consumption, pollutant emissions, and combustion noise. In this work, a one-dimensional (1-D) model of a heavy-duty diesel injector employed in Cummins ISX15 Engine, built in a commercially available computer software called Gamma Technologies (GT)-SUITE, was studied, and analyzed. This work focuses on developing a generalized methodology from previous work to adapt this injector with gasoline-like fuels by recalibrating the discharge coefficients using in-built GT-SUITE optimization techniques. Post recalibration, the 1-D model closely reproduces experimentally measured injection performance characteristics like rate of injection (ROI) profiles, injected quantities, hydraulic delays, and needle lift profiles for the heavy-duty, high-pressure diesel injector using gasoline-like fuels across engine operating points of interest, thereby enabling GCI. As the previous study has demonstrated the potential of injection rate shaping in the mitigation of oxides of nitrogen (NOx) emissions, this validated 1-D model was further used to investigate various injector geometries to produce custom injection rate shapes. Finally, an optimization methodology was developed to generate rate shape of interest to obtain a single set of the selected dimensional parameters across high-efficiency engine operating points using the in-built GT-SUITE optimization techniques. Furthermore, a full factorial design of experiments (DoE) using the candidate injector geometries, hydraulic components were simulated and post-processed to obtain an optimal rate shape, thereby acting as a validation tool for the optimal rate shape obtained using GT-Suite's optimization methods.
Author : Jost Weber
Publisher : Cuvillier Verlag
ISBN 13 : 3867277249
Total Pages : 265 pages
Book Rating : 4.8/5 (672 download)
Download or read book Optimization Methods for the Mixture Formation and Combustion Process in Diesel Engines written by Jost Weber and published by Cuvillier Verlag. This book was released on 2008 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Joseph Bergin
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.:/5 (891 download)
Download or read book Optimization of a Large Diesel Engine Via Spin Spray Combustion written by Michael Joseph Bergin and published by . This book was released on 2008 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sage L. Kokjohn
Publisher :
ISBN 13 :
Total Pages : 436 pages
Book Rating : 4.:/5 (891 download)
Download or read book Investigations of Advanced Injection and Combustion Strategies in Low-emissions Diesel Engines written by Sage L. Kokjohn and published by . This book was released on 2008 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zhiyu Han
Publisher : SAE International
ISBN 13 : 1468604007
Total Pages : 372 pages
Book Rating : 4.4/5 (686 download)
Download or read book Simulation and Optimization of Internal Combustion Engines written by Zhiyu Han and published by SAE International. This book was released on 2021-12-28 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simulation and Optimization of Internal Combustion Engines provides the fundamentals and up-to-date progress in multidimensional simulation and optimization of internal combustion engines. While it is impossible to include all the models in a single book, this book intends to introduce the pioneer and/or the often-used models and the physics behind them providing readers with ready-to-use knowledge. Key issues, useful modeling methodology and techniques, as well as instructive results, are discussed through examples. Readers will understand the fundamentals of these examples and be inspired to explore new ideas and means for better solutions in their studies and work. Topics include combustion basis of IC engines, mathematical descriptions of reactive flow with sprays, engine in-cylinder turbulence, fuel sprays, combustions and pollutant emissions, optimization of direct-injection gasoline engines, and optimization of diesel and alternative fuel engines.
Author : P. V. Farrell
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (228 download)
Download or read book Diesel Engine Injection Rate-Shape Optimization Using Genetic Algorithms and Multidimensional Modeling written by P. V. Farrell and published by . This book was released on 2001 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computational optimization study was performed for a heavy-duty direct-injection diesel engine using the recently developed KIVA-GA computer code. The effects of 11 engine input parameters on emissions and performance were studied. Start of injection (SOI), amount of EGR, boost pressure and eight parameters defining the fuel injection rate-shape were included in the search. The optimized configuration results in very low soot and NO(x) emissions together with relatively low fuel consumption.
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309159474
Total Pages : 251 pages
Book Rating : 4.3/5 (91 download)
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.
Author : Daniel K. Mather
Publisher :
ISBN 13 :
Total Pages : 538 pages
Book Rating : 4.:/5 (89 download)
Download or read book Modeling the Effects of Auxiliary Gas Injection and Fuel Injection Rate Shape on Diesel Engine Combustion and Emissions written by Daniel K. Mather and published by . This book was released on 1998 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Matthew Paul Thiel
Publisher :
ISBN 13 :
Total Pages : 426 pages
Book Rating : 4.:/5 (89 download)
Download or read book Application of Automated Experiments to the Optimization of a Heavy-duty Direct-injected Diesel Engine for the Simultaneous Reduction of NOx and Particulate Emissions written by Matthew Paul Thiel and published by . This book was released on 2001 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (946 download)
Download or read book Visualization of High-Power Density Diesel Engine Spray and Combustion written by and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental visualization study of spray and combustion processes under simulated high-power-density diesel (HPD) combustion conditions is carried out. The scope of work includes characterization of high-pressure injection on test rig, macroscopic and microscopic characterization of non-evaporative sprays in atmosphere ambient condition or in pressurized chamber, and direct visualization of spray and combustion processes inside a single-cylinder optically accessible research engine. The results provide very interesting and dynamic information on spray structure, showing spray angle variations, primary breakup processes, and spray asymmetry under different combinations of injection systems and nozzle geometry. The injection systems tested included electronic unit injector (EUI), hydraulic unit injector (HEUI), and high-pressure common rail (HPCR) with both valve-covered orifice (VCO) and mini-sac nozzles. The near-field spray behavior is shown to strongly depend on the nozzle geometry, needle lift dynamics, and injection pressure, which is a function of the injection system. Some complementary numerical simulations using new transient schemes (space-time method) and primary breakup models (turbulent and cavitational) to better correlate spray and injector design are also discussed. Combustion visualization inside an optically accessible diesel engine equipped with HEUI injection system capable of both single and multi-stage injections was also successfully conducted. Nozzle hole flow area, injection pressure, and length of rate-shaping pipe are the dominating parameters that control the injection rate. The results showed that ignition delay and heat release of pre-mixed combustion is significantly reduced with increase of charge air density and temperature, and with pilot injection.
Author : Tzay-Fa Su
Publisher :
ISBN 13 :
Total Pages : 522 pages
Book Rating : 4.:/5 (89 download)
Download or read book An Experimental Study of High Injection Pressure Diesel Sprays written by Tzay-Fa Su and published by . This book was released on 1995 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yu Shi
Publisher : Springer Science & Business Media
ISBN 13 : 0857296191
Total Pages : 323 pages
Book Rating : 4.8/5 (572 download)
Download or read book Computational Optimization of Internal Combustion Engines written by Yu Shi and published by Springer Science & Business Media. This book was released on 2011-06-22 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Optimization of Internal Combustion Engines presents the state of the art of computational models and optimization methods for internal combustion engine development using multi-dimensional computational fluid dynamics (CFD) tools and genetic algorithms. Strategies to reduce computational cost and mesh dependency are discussed, as well as regression analysis methods. Several case studies are presented in a section devoted to applications, including assessments of: spark-ignition engines, dual-fuel engines, heavy duty and light duty diesel engines. Through regression analysis, optimization results are used to explain complex interactions between engine design parameters, such as nozzle design, injection timing, swirl, exhaust gas recirculation, bore size, and piston bowl shape. Computational Optimization of Internal Combustion Engines demonstrates that the current multi-dimensional CFD tools are mature enough for practical development of internal combustion engines. It is written for researchers and designers in mechanical engineering and the automotive industry.
Author :
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (924 download)
Download or read book Effects of Injection Orifice Shape on Diesel Spray Combustion written by and published by . This book was released on 1999 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Qianfan Xin
Publisher : Elsevier
ISBN 13 : 0857090836
Total Pages : 1087 pages
Book Rating : 4.8/5 (57 download)
Download or read book Diesel Engine System Design written by Qianfan Xin and published by Elsevier. This book was released on 2011-05-26 with total page 1087 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diesel Engine System Design links everything diesel engineers need to know about engine performance and system design in order for them to master all the essential topics quickly and to solve practical design problems. Based on the author's unique experience in the field, it enables engineers to come up with an appropriate specification at an early stage in the product development cycle. Links everything diesel engineers need to know about engine performance and system design featuring essential topics and techniques to solve practical design problems Focuses on engine performance and system integration including important approaches for modelling and analysis Explores fundamental concepts and generic techniques in diesel engine system design incorporating durability, reliability and optimization theories
Author : Society of Automotive Engineers
Publisher :
ISBN 13 :
Total Pages : 334 pages
Book Rating : 4.3/5 (91 download)
Download or read book Technical Literature Abstracts written by Society of Automotive Engineers and published by . This book was released on 2000 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Giulio E. Riva
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (598 download)
Download or read book Diesel Spray Combustion Rate Enhancement by Increasing Injection Pressure written by Giulio E. Riva and published by . This book was released on 1993 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
