Impact of Exhaust Valve Leakage on Engine-out Hydrocarbons
Author : Paul Richard Meernik
Publisher :
Page : 9 pages
File Size : 33,46 MB
Release : 1993
Category : Automobiles
ISBN :
Author : Paul Richard Meernik
Publisher :
Page : 9 pages
File Size : 33,46 MB
Release : 1993
Category : Automobiles
ISBN :
Author : C. Arcoumanis
Publisher : Springer Science & Business Media
Page : 427 pages
File Size : 14,17 MB
Release : 2009-06-29
Category : Science
ISBN : 354068901X
Optimization of combustion processes in automotive engines is a key factor in reducing fuel consumption. This book, written by eminent university and industry researchers, investigates and describes flow and combustion processes in diesel and gasoline engines.
Author : Stani V. Bohac
Publisher :
Page : 464 pages
File Size : 47,61 MB
Release : 2003
Category :
ISBN :
Author : John H Johnson
Publisher : SAE International
Page : 700 pages
File Size : 49,29 MB
Release : 2005-06-27
Category : Technology & Engineering
ISBN : 0768011213
Emission and fuel economy regulations and standards are compelling manufacturers to build ultra-low emission vehicles. As a result, engineers must develop spark-ignition engines with integrated emission control systems that use reformulated low-sulfur fuel. Emission Control and Fuel Economy for Port and Direct Injected SI Engines is a collection of SAE technical papers that covers the fundamentals of gasoline direct injection (DI) engine emissions and fuel economy, design variable effects on HC emissions, and advanced emission control technology and modeling approaches. All papers contained in this book were selected by an accomplished expert as the best in the field; reprinted in their entirety, they present a pathway to integrated emission control systems that meet 2004-2009 EPA standards for light-duty vehicles.
Author : Fuquan Zhao
Publisher : SAE International
Page : 728 pages
File Size : 31,10 MB
Release : 2004-03-08
Category : Technology & Engineering
ISBN : 0768096022
During the last several years, significant efforts have been directed toward the development of ultra-clean, gasoline-powered vehicles in the automotive industry. With the coming of increasingly stringent emissions legislation, this development is more critical now than ever before. This has lead to an increase in the technical information available. Advanced Developments in Ultra-Clean Gasoline-Powered Vehicles provides the reader with technical information including a description of fundamental processes, insight on technical issues, key trends, and future R&D directions.
Author : Society of Automotive Engineers
Publisher : SAE International
Page : 378 pages
File Size : 27,7 MB
Release : 1999
Category : Technology & Engineering
ISBN :
Author : Vincent Stanley Costanzo
Publisher :
Page : 272 pages
File Size : 49,45 MB
Release : 2011
Category :
ISBN :
Nearly all of the hydrocarbon emissions from a modern gasoline-fueled vehicle occur when the engine is first started. One important contributing factor to this is the fact that, during this time, temperatures throughout the engine are low - below the point at which all of the components of the gasoline can readily vaporize. Consequently, any fuel that enters the combustion chamber in liquid form can escape combustion and subsequently be exhausted as hydrocarbon emissions. An experimental study was performed in a firing engine in which liquid gasoline films were established at various locations in the combustion chamber and the resulting impact on hydrocarbon emissions was assessed. Unique about this setup was that it combined direct visual observation of the liquid fuel films, measurements of the temperatures these films were subjected to, and the determination from gas analyzers of burned and unburned fuel quantities - all with cycle-level or better resolution. An increase in the hydrocarbon emissions was observed with liquid gasoline films present in the combustion chamber. This increase depended upon both the location of the film and the temperature of that location, and correlated with estimates of the mass of fuel in the film. The largest impact was observed when the head near the exhaust valve was wetted; the smallest impact was observed when the piston on the intake side of the engine was wetted. In general, as engine temperatures increased the hydrocarbon emissions due to the liquid fuel films decreased. It was also identified when, in the exhaust event, fuel from the films was actually exhausted. The effect of the location of the liquid fuel film can best be understood in terms of the time before flame arrival at that location, the local flow over the film, and the extent to which the overall flow in the combustion chamber carries fuel from the film to the exhaust valve. The primary effect of wall temperature is to affect the amount of vaporization from the film: as temperature increases more vaporization occurs before flame arrival, resulting in less fuel that can vaporize post-flame as unburned fuel emissions.
Author : Robert Wayne Goodwin
Publisher :
Page : 408 pages
File Size : 45,79 MB
Release : 1997
Category :
ISBN :
Author : Society of Automotive Engineers
Publisher :
Page : 400 pages
File Size : 41,70 MB
Release : 2000
Category : Technical literature
ISBN :
Author : Eran Sher
Publisher : Academic Press
Page : 689 pages
File Size : 23,54 MB
Release : 1998-03-20
Category : Technology & Engineering
ISBN : 0080532756
This handbook is an important and valuable source for engineers and researchers in the area of internal combustion engines pollution control. It provides an excellent updated review of available knowledge in this field and furnishes essential and useful information on air pollution constituents, mechanisms of formation, control technologies, effects of engine design, effects of operation conditions, and effects of fuel formulation and additives. The text is rich in explanatory diagrams, figures and tables, and includes a considerable number of references. An important resource for engineers and researchers in the area of internal combustion engines and pollution control Presents and excellent updated review of the available knowledge in this area Written by 23 experts Provides over 700 references and more than 500 explanatory diagrams, figures and tables