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Author: Alexander Knafl Publisher: ISBN: 9783836465755 Category : Technology & Engineering Languages : en Pages : 164
Book Description
The development of low-temperature premixed compression ignition (PCI) combustion strategies and the performance of diesel oxidation catalysts (DOe are presented in this work. At moderate loads, low-temperature PCI combustion is shown to significantly reduce engine-out oxides of nitrogen (NOX) and soot emissions compared to a conventional diesel combustion strategy. The PCI load-range is limited by soot emissions at high engine loads and excessive carbon monoxide (CO), hydrocarbon (He emissions and low exhaust gas temperatures low engine loads. DOC formulations are investigated on a gas bench reactor using surrogate exhaust gas mixtures containing CO, O2, H2O, n1H24, C2H4 and N2. Light-off tests show delayed catalyst light-off in the presence of PCI exhaust. CO and HC are converted to 100% and 98% respectively under fully lit conditions. Engine experiments agree well with reactor experiments. DOC formulations containing zeolites adsorb HC at low temperatures. HC speciation shows that HCs of carbon number five and higher are trapped on zeolite at low temperatures. CO conversion is 100% through the fully active catalyst; HC conversion is lower compared to the reactor experiments.
Author: Alexander Knafl Publisher: ISBN: 9783836465755 Category : Technology & Engineering Languages : en Pages : 164
Book Description
The development of low-temperature premixed compression ignition (PCI) combustion strategies and the performance of diesel oxidation catalysts (DOe are presented in this work. At moderate loads, low-temperature PCI combustion is shown to significantly reduce engine-out oxides of nitrogen (NOX) and soot emissions compared to a conventional diesel combustion strategy. The PCI load-range is limited by soot emissions at high engine loads and excessive carbon monoxide (CO), hydrocarbon (He emissions and low exhaust gas temperatures low engine loads. DOC formulations are investigated on a gas bench reactor using surrogate exhaust gas mixtures containing CO, O2, H2O, n1H24, C2H4 and N2. Light-off tests show delayed catalyst light-off in the presence of PCI exhaust. CO and HC are converted to 100% and 98% respectively under fully lit conditions. Engine experiments agree well with reactor experiments. DOC formulations containing zeolites adsorb HC at low temperatures. HC speciation shows that HCs of carbon number five and higher are trapped on zeolite at low temperatures. CO conversion is 100% through the fully active catalyst; HC conversion is lower compared to the reactor experiments.
Author: Publisher: ISBN: Category : Languages : en Pages : 5
Book Description
Advanced diesel engine and aftertreatment technologies have been developed for multiple engine and vehicle platforms. Tier 2 (2007 and beyond) emissions levels have been demonstrated for a light truck vehicle over a FTP-75 test cycle on a vehicle chassis dynamometer. These low emissions levels are obtained while retaining the fuel economy advantage characteristic of diesel engines. The performance and emissions results were achieved by integrating advanced combustion strategies (CLEAN Combustion{copyright}) with prototype aftertreatment systems. CLEAN Combustion{copyright} allows partial control of exhaust species for aftertreatment integration in addition to simultaneous NOx and PM reduction. Analytical tools enabled the engine and aftertreatment sub-systems development and system integration. The experimental technology development methodology utilized a range of facilities to streamline development of the eventual solution including utilization of steady state and transient dynamometer test-beds to simulate chassis dynamometer test cycles.
Author: H Zhao Publisher: Elsevier ISBN: 1845697456 Category : Technology & Engineering Languages : en Pages : 761
Book Description
Volume 2 of the two-volume set Advanced direct injection combustion engine technologies and development investigates diesel DI combustion engines, which despite their commercial success are facing ever more stringent emission legislation worldwide. Direct injection diesel engines are generally more efficient and cleaner than indirect injection engines and as fuel prices continue to rise DI engines are expected to gain in popularity for automotive applications. Two exclusive sections examine light-duty and heavy-duty diesel engines. Fuel injection systems and after treatment systems for DI diesel engines are discussed. The final section addresses exhaust emission control strategies, including combustion diagnostics and modelling, drawing on reputable diesel combustion system research and development. Investigates how HSDI and DI engines can meet ever more stringent emission legislation Examines technologies for both light-duty and heavy-duty diesel engines Discusses exhaust emission control strategies, combustion diagnostics and modelling
Author: H Zhao Publisher: Elsevier ISBN: 1845697324 Category : Technology & Engineering Languages : en Pages : 325
Book Description
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: Avinash Kumar Agarwal Publisher: Springer ISBN: 9811332754 Category : Technology & Engineering Languages : en Pages : 257
Book Description
This book describes the discusses advanced fuels and combustion, emission control techniques, after-treatment systems, simulations and fault diagnostics, including discussions on different engine diagnostic techniques such as particle image velocimetry (PIV), phase Doppler interferometry (PDI), laser ignition. This volume bridges the gap between basic concepts and advanced research in internal combustion engine diagnostics, making it a useful reference for both students and researchers whose work focuses on achieving higher fuel efficiency and lowering emissions.
Author: National Research Council Publisher: National Academies Press ISBN: 0309122082 Category : Transportation Languages : en Pages : 130
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: Philip J Dingle Publisher: SAE International ISBN: 0768022002 Category : Technology & Engineering Languages : en Pages : 140
Book Description
Despite being developed more than 100 years ago, the diesel engine has yet to achieve mass acceptance in the North American passenger car sector. In most other parts of the world, however, diesel engines have made considerable strides due in part to the common rail fuel injection system. Significant fuel economy, reduced exhaust emissions, invincible low-speed torque, and all-around good drivability are a few of the benefits associated with common rail technology, which are covered in-depth in Diesel Common Rail and Advanced Fuel Injection Systems.
Author: National Research Council Publisher: National Academies Press ISBN: 0309216389 Category : Science Languages : en Pages : 373
Book Description
Various combinations of commercially available technologies could greatly reduce fuel consumption in passenger cars, sport-utility vehicles, minivans, and other light-duty vehicles without compromising vehicle performance or safety. Assessment of Technologies for Improving Light Duty Vehicle Fuel Economy estimates the potential fuel savings and costs to consumers of available technology combinations for three types of engines: spark-ignition gasoline, compression-ignition diesel, and hybrid. According to its estimates, adopting the full combination of improved technologies in medium and large cars and pickup trucks with spark-ignition engines could reduce fuel consumption by 29 percent at an additional cost of $2,200 to the consumer. Replacing spark-ignition engines with diesel engines and components would yield fuel savings of about 37 percent at an added cost of approximately $5,900 per vehicle, and replacing spark-ignition engines with hybrid engines and components would reduce fuel consumption by 43 percent at an increase of $6,000 per vehicle. The book focuses on fuel consumption-the amount of fuel consumed in a given driving distance-because energy savings are directly related to the amount of fuel used. In contrast, fuel economy measures how far a vehicle will travel with a gallon of fuel. Because fuel consumption data indicate money saved on fuel purchases and reductions in carbon dioxide emissions, the book finds that vehicle stickers should provide consumers with fuel consumption data in addition to fuel economy information.
Author: Alexander Knafl
Author: Alexander Knafl
Author: 
Author: H Zhao
Author: H Zhao
Author: Avinash Kumar Agarwal
Author: William L. Hardy![Impacts of Advanced Combustion, Fuels and Aftertreatment [sic] Technologies on Diesel PM Emissions and Mobile Source Air Toxics PDF](https://books.google.com/books/content/images/frontcover/WvWXDAEACAAJ?fife=w80-h100)
Author: 
Author: National Research Council
Author: Philip J Dingle
Author: National Research Council