Author: Daniel K. MatherPublisher:
ISBN:
Category :
Languages : en
Pages : 538
Book Description
Modeling the Effects of Auxiliary Gas Injection and Fuel Injection Rate Shape on Diesel Engine Combustion and Emissions
Author: Daniel K. MatherModeling the Effects of Fuel Injection Characteristics on Diesel Combustion and Emissions
Author: Mark Andrew PattersonPublisher:
ISBN:
Category :
Languages : en
Pages : 474
Book Description
Modeling the Effects of Fuel Injection on Heavy-duty Diesel Engine Performance and Emissions
Author: David D.. WickmanModelling Diesel Combustion
Author: P. A. LakshminarayananPublisher: Springer Nature
ISBN: 981166742X
Category : Technology & Engineering
Languages : en
Pages : 419
Book Description
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.
Modeling the Effects of Engine Speed and Fuel Injection Strategies on Power Density and Emission Levels
Author: Michael F. StoiaExploring the Mechanisms Responsible for the Effect of Auxiliary Gas Injection in DI Diesel Emissions
Author: Eric M. KurtzEffects of Auxiliary Injection of Diesel Engine Combustion
Author: Joseph Sykora ShakalPublisher:
ISBN:
Category :
Languages : en
Pages : 350
Book Description
Modeling the Effects of Late Cycle Oxygen Enrichment on Diesel Engine Combustion and Emissions
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 8
Book Description
A multidimensional simulation of Auxiliary Gas Injection (AGI) for late cycle oxygen enrichment was exercised to assess the merits of AGI for reducing the emissions of soot from heavy duty diesel engines while not adversely affecting the NO(subscript x) emissions of the engine. Here, AGI is the controlled enhancement of mixing within the diesel engine combustion chamber by high speed jets of air or another gas. The engine simulated was a Caterpillar 3401 engine. For a particular operating condition of this engine, the simulated soot emissions of the engine were reduced by 80% while not significantly affecting the engine-out NO(subscript x) emissions compared to the engine operating without AGI. The effects of AGI duration, timing, and orientation are studied to confirm the window of opportunity for realizing lower engine-out soot while not increasing engine out NO(subscript x) through controlled enhancement of in-cylinder mixing. These studies have shown that this window occurs during the late combustion cycle, from 20 to 60 crank angle degrees after top-dead-center. During this time, the combustion chamber temperatures are sufficiently high that soot oxidation increases in response in increased mixing, but the temperature is low enough that NO(subscript x) reactions are quenched. The effect of the oxygen composition of the injected air is studied for the range of compositions between 21% and 30% oxygen by volume. This is the range of oxygen enrichment that is practical to produce from an air separation membrane. Simulations showed that this level of oxygen enrichment is insufficient to provide an additional benefit by either increasing the level of soot oxidation or prolonging the window of opportunity for increasing soot oxidation through enhanced mixing.
Modeling the Use of Air-injection for Emissions Reduction in a Direct-injected Diesel Engine
Author: Daniel K. MatherA Theoretical and Experimental Study of Emissions Modeling for Diesel Engines with Comparisons to In-cylinder Imaging
Author: Gregory James HampsonPublisher:
ISBN:
Category :
Languages : en
Pages : 618
Book Description
Typescript.