Visualization of Fuel Injection and Combustion in a DI Diesel Engine
Author :
Publisher :
Page : 275 pages
File Size : 15,13 MB
Release : 1999
Category :
ISBN :
Author :
Publisher :
Page : 275 pages
File Size : 15,13 MB
Release : 1999
Category :
ISBN :
Author : Marco Bakenhus
Publisher :
Page : 580 pages
File Size : 34,6 MB
Release : 1998
Category :
ISBN :
A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science (mechanical Engineering).
Author : Aakash Puntambekar
Publisher :
Page : 410 pages
File Size : 32,32 MB
Release : 2009
Category :
ISBN :
Author : Tomislav Themel
Publisher :
Page : 230 pages
File Size : 43,78 MB
Release : 1998
Category :
ISBN :
Author : Yasuki Nakayama
Publisher : CRC Press
Page : 260 pages
File Size : 33,64 MB
Release : 1996-05-29
Category : Computers
ISBN : 9780849326561
Visualization is a novel interdisciplinary science for making any phenomenon clear by visualizing the invisible using computer techniques. It covers such diverse phenomena as fluid flow, heat and mass transfer, sound, electromagnetism, and chemical change and its combinations. The Atlas of Visualization, II presents the latest advances in visualization techniques, image processing, computer graphics, and visualization of measured and compound results. Focusing on both experimental and computer-aided visualization, this encyclopedic resource discusses all aspects of this new and evolving science.
Author :
Publisher :
Page : 0 pages
File Size : 47,58 MB
Release : 1999
Category :
ISBN :
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 : Teoman Uzkan
Publisher :
Page : 124 pages
File Size : 18,47 MB
Release : 1990
Category : Technology & Engineering
ISBN :
Author : H Zhao
Publisher : Elsevier
Page : 325 pages
File Size : 47,60 MB
Release : 2014-01-23
Category : Technology & Engineering
ISBN : 1845697324
Direct injection enables precise control of the fuel/air mixture so that engines can be tuned for improved power and fuel economy, but ongoing research challenges remain in improving the technology for commercial applications. As fuel prices escalate DI engines are expected to gain in popularity for automotive applications. This important book, in two volumes, reviews the science and technology of different types of DI combustion engines and their fuels. Volume 1 deals with direct injection gasoline and CNG engines, including history and essential principles, approaches to improved fuel economy, design, optimisation, optical techniques and their applications. - Reviews key technologies for enhancing direct injection (DI) gasoline engines - Examines approaches to improved fuel economy and lower emissions - Discusses DI compressed natural gas (CNG) engines and biofuels
Author : P. A. Lakshminarayanan
Publisher : Springer Nature
Page : 419 pages
File Size : 13,58 MB
Release : 2022-01-21
Category : Technology & Engineering
ISBN : 981166742X
This book comprehensively discusses diesel combustion phenomena like ignition delay, fuel-air mixing, rate of heat release, and emissions of smoke, particulate and nitric oxide. It enables quantitative evaluation of these important phenomena and parameters. Most importantly, it attempts to model them with constants that are independent of engine types and hence they could be applied by the engineers and researchers for a general engine. This book emphasizes the importance of the spray at the wall in precisely describing the heat release and emissions for most of the engines on and off-road. It gives models for heat release and emissions. Every model is thoroughly validated by detailed experiments using a broad range of engines. The book describes an elegant quasi-one-dimensional model for heat release in diesel engines with single as well as multiple injections. The book describes how the two aspects, namely, fuel injection rate and the diameter of the combustion bowl in the piston, have enabled meeting advanced emission, noise, and performance standards. The book also discusses the topics of computational fluid dynamics encompassing RANS and LES models of turbulence. Given the contents, this book will be useful for students, researchers and professionals working in the area of vehicle engineering and engine technology. This book will also be a good professional book for practising engineers in the field of combustion engines and automotive engineering.
Author : Bertrand Hsu
Publisher : SAE International
Page : 161 pages
File Size : 38,82 MB
Release : 2002-10-25
Category : Technology & Engineering
ISBN : 076804166X
The diesel engine is one of the most efficient types of heat engines and is widely used as a prime mover for many applications. In recent years, with the aid of modern computers, engine combustion modeling has made great progress. However, due to the complexities of the processes involved in the practical diesel engine, there are still too many unknowns preventing computational prediction to have the accuracy level required by industry. This book examines some basic characteristics of diesel engine combustion process, and describes the commonly used tool to analyze combustion - heat release analysis. It addition, Practical Diesel-Engine Combustion Analysis describes the performance changes that might be encountered in the engine user environment, with a goal of helping the reader analyze his own practical combustion problems. Chapters include: Combustion and Fuel-Injection Processes in the Diesel Engine Heat Release and its Effect on Engine Performance Alternate Fuels Combustion Analysis and more