Experimental Investigation of DME Assisted Gasoline CAI Combustion with Re-breathing Valve Strategy PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Experimental Investigation of DME Assisted Gasoline CAI Combustion with Re-breathing Valve Strategy PDF full book. Access full book title Experimental Investigation of DME Assisted Gasoline CAI Combustion with Re-breathing Valve Strategy by Kangwoo Seo. Download full books in PDF and EPUB format.
Author: Kangwoo Seo
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Kangwoo Seo
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Haofan Zhang
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
A new dual fuel Controlled Auto-Ignition (CA!) combustion concept was proposed and researched for lower exhaust emissions and better fuel economy. The concept takes the advantage of the complementary physical and chemical properties of high octane number gasoline and high cetane number Di-Methyl Ether (DME) to organize the combustion process. Homogeneous gasoline/air mixture is utilized as the main combustible charge, which is realised by a low-cost Port Fuel Injection (PFI) system. Pressurised DME is directly injected into cylinder via a commercial Gasoline Direct Injection (GDI) injector. Flexible DME injection strategies are employed to realise the controlled auto ignition of the premixed charge. The engine is operated at Wide Open Throttle (WOT) in the entire operating region in order to minimize the intake pumping loss. Engine load is controlled by varying the amount of internal Exhaust Gas Recirculation (iEGR) which is achieved and adjusted by Positive Valve Overlap (PVO) and/or exhaust back pressure, and exhaust re- breathing method. The premixed mixture can be of either stoichiometric air/fuel ratio or fuel lean mixture and is heated and diluted by recycled exhaust gases. The use of internal EGR is considered as a very effective method to initiate CAI combustion due to its heating effect and moderation of the heat release rate by its dilution effect. In addition, the new combustion concept is compared to conventional SI combustion. The results indicate that the new combustion concept has potential for high efficiency, low emissions, enlargement of the engine operational region and flexible control of CAI combustion.
Author: Yan Zhang
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Hua Zhao
Publisher: CRC Press
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 562
Get Book Here
Book Description
Homogeneous charge compression ignition (HCCI)/controlled auto-ignition (CAI) has emerged as one of the most promising engine technologies with the potential to combine fuel efficiency and improved emissions performance, offering reduced nitrous oxides and particulate matter alongside efficiency comparable with modern diesel engines. Despite the considerable advantages, its operational range is rather limited and controlling the combustion (timing of ignition and rate of energy release) is still an area of on-going research. Commercial applications are, however, close to reality. HCCI a.
Author: F. Zhao
Publisher: Elsevier
ISBN: 008055279X
Category : Technology & Engineering
Languages : en
Pages : 129
Get Book Here
Book Description
The process of fuel injection, spray atomization and vaporization, charge cooling, mixture preparation and the control of in-cylinder air motion are all being actively researched and this work is reviewed in detail and analyzed. The new technologies such as high-pressure, common-rail, gasoline injection systems and swirl-atomizing gasoline fuel injections are discussed in detail, as these technologies, along with computer control capabilities, have enabled the current new examination of an old objective; the direct-injection, stratified-charge (DISC), gasoline engine. The prior work on DISC engines that is relevant to current GDI engine development is also reviewed and discussed. The fuel economy and emission data for actual engine configurations have been obtained and assembled for all of the available GDI literature, and are reviewed and discussed in detail. The types of GDI engines are arranged in four classifications of decreasing complexity, and the advantages and disadvantages of each class are noted and explained. Emphasis is placed upon consensus trends and conclusions that are evident when taken as a whole; thus the GDI researcher is informed regarding the degree to which engine volumetric efficiency and compression ratio can be increased under optimized conditions, and as to the extent to which unburned hydrocarbon (UBHC), NOx and particulate emissions can be minimized for specific combustion strategies. The critical area of GDI fuel injector deposits and the associated effect on spray geometry and engine performance degradation are reviewed, and important system guidelines for minimizing deposition rates and deposit effects are presented. The capabilities and limitations of emission control techniques and after treatment hardware are reviewed in depth, and a compilation and discussion of areas of consensus on attaining European, Japanese and North American emission standards presented. All known research, prototype and production GDI engines worldwide are reviewed as to performance, emissions and fuel economy advantages, and for areas requiring further development. The engine schematics, control diagrams and specifications are compiled, and the emission control strategies are illustrated and discussed. The influence of lean-NOx catalysts on the development of late-injection, stratified-charge GDI engines is reviewed, and the relative merits of lean-burn, homogeneous, direct-injection engines as an option requiring less control complexity are analyzed.
Author: Rakesh Kumar Maurya
Publisher: Springer
ISBN: 3319685082
Category : Technology & Engineering
Languages : en
Pages : 553
Get Book Here
Book Description
This book deals with novel advanced engine combustion technologies having potential of high fuel conversion efficiency along with ultralow NOx and particulate matter (PM) emissions. It offers insight into advanced combustion modes for efficient utilization of gasoline like fuels. Fundamentals of various advanced low temperature combustion (LTC) systems such as HCCI, PCCI, PPC and RCCI engines and their fuel quality requirements are also discussed. Detailed performance, combustion and emissions characteristics of futuristic engine technologies such as PPC and RCCI employing conventional as well as alternative fuels are analyzed and discussed. Special emphasis is placed on soot particle number emission characterization, high load limiting constraints, and fuel effects on combustion characteristics in LTC engines. For closed loop combustion control of LTC engines, sensors, actuators and control strategies are also discussed. The book should prove useful to a broad audience, including graduate students, researchers, and professionals Offers novel technologies for improved and efficient utilization of gasoline like fuels; Deals with most advanced and futuristic engine combustion modes such as PPC and RCCI; Comprehensible presentation of the performance, combustion and emissions characteristics of low temperature combustion (LTC) engines; Deals with closed loop combustion control of advanced LTC engines; State-of-the-art technology book that concisely summarizes the recent advancements in LTC technology. .
Author: Richard Viskup
Publisher:
ISBN: 178985248X
Category : Technology & Engineering
Languages : en
Pages : 202
Get Book Here
Book Description
The internal combustion engine was invented around 1790 by various scientists and engineers worldwide. Since then the engines have gone through many modifications and improvements. Today, different applications of engines form a significant technological importance in our everyday lives, leading to the evolution of our modern civilization. The invention of diesel and gasoline engines has definitely changed our lifestyles as well as shaped our priorities. The current engines serve innumerable applications in various types of transportation, in harsh environments, in construction, in diverse industries, and also as back-up power supply systems for hospitals, security departments, and other institutions. However, heavy duty or light duty engines have certain major disadvantages, which are well known to everyone. With the increasing usage of diesel and gasoline engines, and the constantly rising number of vehicles worldwide, the main concern nowadays is engine exhaust emissions. This book looks at basic phenomena related to diesel and gasoline engines, combustion, alternative fuels, exhaust emissions, and mitigations.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309122082
Category : Transportation
Languages : en
Pages : 130
Get Book Here
Book Description
The 21st Century Truck Partnership (21CTP), a cooperative research and development partnership formed by four federal agencies with 15 industrial partners, was launched in the year 2000 with high hopes that it would dramatically advance the technologies used in trucks and buses, yielding a cleaner, safer, more efficient generation of vehicles. Review of the 21st Century Truck Partnership critically examines and comments on the overall adequacy and balance of the 21CTP. The book reviews how well the program has accomplished its goals, evaluates progress in the program, and makes recommendations to improve the likelihood of the Partnership meeting its goals. Key recommendations of the book include that the 21CTP should be continued, but the future program should be revised and better balanced. A clearer goal setting strategy should be developed, and the goals should be clearly stated in measurable engineering terms and reviewed periodically so as to be based on the available funds.
Author: P. A. Lakshminarayanan
Publisher: Springer Nature
ISBN: 9811509700
Category : Technology & Engineering
Languages : en
Pages : 914
Get Book Here
Book Description
This book is intended to serve as a comprehensive reference on the design and development of diesel engines. It talks about combustion and gas exchange processes with important references to emissions and fuel consumption and descriptions of the design of various parts of an engine, its coolants and lubricants, and emission control and optimization techniques. Some of the topics covered are turbocharging and supercharging, noise and vibrational control, emission and combustion control, and the future of heavy duty diesel engines. This volume will be of interest to researchers and professionals working in this area.
Author: Frédérique Battin-Leclerc
Publisher: Springer Science & Business Media
ISBN: 1447153073
Category : Technology & Engineering
Languages : en
Pages : 657
Get Book Here
Book Description
This overview compiles the on-going research in Europe to enlarge and deepen the understanding of the reaction mechanisms and pathways associated with the combustion of an increased range of fuels. Focus is given to the formation of a large number of hazardous minor pollutants and the inability of current combustion models to predict the formation of minor products such as alkenes, dienes, aromatics, aldehydes and soot nano-particles which have a deleterious impact on both the environment and on human health. Cleaner Combustion describes, at a fundamental level, the reactive chemistry of minor pollutants within extensively validated detailed mechanisms for traditional fuels, but also innovative surrogates, describing the complex chemistry of new environmentally important bio-fuels. Divided into five sections, a broad yet detailed coverage of related research is provided. Beginning with the development of detailed kinetic mechanisms, chapters go on to explore techniques to obtain reliable experimental data, soot and polycyclic aromatic hydrocarbons, mechanism reduction and uncertainty analysis, and elementary reactions. This comprehensive coverage of current research provides a solid foundation for researchers, managers, policy makers and industry operators working in or developing this innovative and globally relevant field.
