Download or read book Demonstration of a Diesel Fuel borne Catalyst System and Low NOx Control Technology for Reducing Particulate and NOx Emissions written by Michael D. Jackson and published by . This book was released on 2001 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Petroleum Based Fuels Diesel Emissions Project APBF DEC written by and published by . This book was released on 2007 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the results of a 2,000-hour test of an emissions control system consisting of a nitrogen oxides adsorber catalyst in combination with a diesel particle filter, advanced fuels, and advanced engine controls in an SUV/pick-up truck vehicle platform.
Download or read book Clean Diesel Component Improvement Program written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The research conducted in this program significantly increased the knowledge and understanding in the fields of plasma physics and chemistry in diesel exhaust, the performance and characteristics of multifunctional catalysts in diesel exhaust, and the complexities of controlling a combination of such systems to remove NOx. Initially this program was designed to use an in-line plasma system (know as a plasma assisted catalyst system or PAC) to convert NO --> NO2, a more catalytically active form of nitrogen oxides, and to crack hydrocarbons (diesel fuel in particular) into active species. The NO2 and the cracked hydrocarbons were then flowed over an in-line ceramic NOx catalyst that removed NO2 from the diesel exhaust. Even though the PAC system performed well technically and was able to remove over 95% of NOx from diesel exhaust the plasma component proved not to be practical or commercially feasible. The lack of practical and commercial viability was due to high unit costs and lack of robustness. The plasma system and its function was replaced in the NOx removal process by a cracking reforming catalyst that converted diesel fuel to a highly active reductant for NOx over a downstream ceramic NOx catalyst. This system was designated the ceramic catalyst system (CCS). It was also determined that NO conversion to NO2 was not required to achieve high levels of NOx reduction over ceramic NOx catalyst if that catalyst was properly formulated and the cracking reforming produced a reductant optimized for that NOx catalyst formulation. This system has demonstrated 92% NOx reduction in a diesel exhaust slipstream and 65% NOx reduction from the full exhaust of a 165 hp diesel engine using the FTP cycle. Although this system needs additional development to be commercial, it is simple, cost effective (does not use precious metals), sulfur tolerant, operates at high space velocities, does not require a second fluid be supplied as a reductant, has low parasitic loss of 2-3% and achieves high levels of NOx reduction. This project benefits the public by providing a simple low-cost technology to remove NOx pollutants from the exhaust of almost any combustion source. The reduction of NOx emissions emitted into the troposphere provides well documented improvement in health for the majority of United States citizens. The emissions reduction produced by this technology helps remove the environmental constraints to economic growth.
Download or read book California State Publications written by and published by . This book was released on 2002 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diesel Particulate Filter Technology written by Timothy V Johnson and published by SAE International. This book was released on 2007-03-28 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until recently, the complexity of the Diesel Particulate Filter (DPF) system has hindered its commercial success. Stringent regulations of diesel emissions has lead to advancements in this technology, therefore mainstreaming the use of DPFs in light- and heavy-duty diesel filtration applications. This book covers the latest and most important research in DPF systems, focusing mainly on the advancements of the years 2002-2006. Editor Timothy V. Johnson selected the top 29 SAE papers covering the most significant research in this technology.
Download or read book Nitrogen oxides NOx why and how they are controlled written by and published by DIANE Publishing. This book was released on 1999 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reducing Sulfur in Gasoline and Diesel Fuel written by United States. Congress. House. Committee on Science. Subcommittee on Energy and Environment and published by . This book was released on 1999 with total page 1488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diesel Technology written by National Research Council (U.S.). Diesel Impacts Study Committee. Technology Panel and published by National Academies. This book was released on 1982 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book SAE 2006 05 0182 Potential of Existing Emission Control Technologies for Diesel Engines Fuelled With Biodiesel written by Koji Yamane and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes the potential of existing exhaust emission reduction technologies for diesel engines fuelled with biodiesel. We examined improvements in in-cylinder combustion technologies using common-rail, high-pressure injection equipment, after-treatment technology using diesel particulate filters:DPF and diesel oxidation catalysts (DOC), and fuel treatment technology by the addition of a cetane improver. An additive, 2-ethyl-hexyl-nitrate:EHN, was tested using both neat biodiesel fuel and a 20% biodiesel/low-sulfur gasoil blend:B20 using a DI diesel engine with a common-rail injection system. The EHN was effective for reducing soluble organic fraction:SOF in particulate matter:PM at low engine loads for neat biodiesel fuel. EHN addition reduced NOx for both B20 and gasoil. Engine bench tests and vehicle road tests were conducted using a passive DPF system without a catalyst or electric heater for filter regeneration. For gasoil, regeneration of the DPF was required at approximately 300 km. However, regeneration of the DPF was not necessary when using biodiesel fuel. The DPF is effective for reducing both soot particles and SOF in PM at high and low engine loads. Self-regeneration of the DPF occurs when engine loads change from low to high and when potassium hydroxide catalysts are incorporated into the biodiesel production process; transesterification and refining process. We found that a diesel oxidation catalysts:DOC is effective at reducing SOF, unburned hydrocarbon, carbon monoxide, and aldehydes in exhaust emission. In addition, we devised a strategy for emission control using existing technologies. First, NOx emissions could be reduced by retarding the timing of injection such that it was the same as that of gasoil. This control of timing is particularly important given that the ignitability of biodiesel greater than that of gasoil. SOF in PM will be reduced by DPF, DOC and cetane improver at low engine loads. In general, soot emission associated with biodiesel is less than that of gasoil because biodiesel is oxygenated and free of aromatic hydrocarbon diesel fuel. Furthermore, soot emission can be suppressed by high-pressure injection and DPF, while the gaseous exhaust emissions, CO, HC, and aldehydes, will be reduced by DOC. Finally, the combination of conventional emission control technologies, DPF, DOC, fuel additives, will necessitate high-pressure injection in order to meet the stringent diesel engine emission targets for biodiesel-fuelled diesel engines by 2010.
Download or read book NOx Trap Catalysts and Technologies written by Luca Lietti and published by Royal Society of Chemistry. This book was released on 2018-06-13 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vehicle exhaust emissions, particularly from diesel cars, are considered to be a significant problem for the environment and human health. Lean NOx Trap (LNT) or NOx Storage/Reduction (NSR) technology is one of the current techniques used in the abatement of NOx from lean exhausts. Researchers are constantly searching for new inexpensive catalysts with high efficiency at low temperatures and negligible fuel penalties, to meet the challenges of this field. This book will be the first to comprehensively present the current research on this important area. Covering the technology used, from its development in the early 1990s up to the current state-of-the-art technologies and new legislation. Beginning with the fundamental aspects of the process, the discussion will cover the real application standard through to the detailed modelling of full scale catalysts. Scientists, academic and industrial researchers, engineers working in the automotive sector and technicians working on emission control will find this book an invaluable resource.
Download or read book SELECTIVE CATALYTIC REDUCTION OF DIESEL ENGINE NOX EMISSIONS USING ETHANOL AS A REDUCTANT written by and published by . This book was released on 2003 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: NOx emissions from a heavy-duty diesel engine were reduced by more than 90% and 80% utilizing a full-scale ethanol-SCR system for space velocities of 21000/h and 57000/h respectively. These results were achieved for catalyst temperatures between 360 and 400 C and for C1:NOx ratios of 4-6. The SCR process appears to rapidly convert ethanol to acetaldehyde, which subsequently slipped past the catalyst at appreciable levels at a space velocity of 57000/h. Ammonia and N2O were produced during conversion; the concentrations of each were higher for the low space velocity condition. However, the concentration of N2O did not exceed 10 ppm. In contrast to other catalyst technologies, NOx reduction appeared to be enhanced by initial catalyst aging, with the presumed mechanism being sulfate accumulation within the catalyst. A concept for utilizing ethanol (distilled from an E-diesel fuel) as the SCR reductant was demonstrated.
Download or read book Fuels and Fuel Additives written by S. P. Srivastava and published by John Wiley & Sons. This book was released on 2014-01-16 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examines all stages of fuel production, from feedstocks to finished products Exploring chemical structures and properties, this book sheds new light on the current science and technology of producing energy efficient and environmentally friendly fuels. Moreover, it explains the role of fuel-additives in the production cycle. This expertly written and organized guide to fuels and fuel-additives also presents requirements, rules and regulations, including US and EU standards governing automotive emissions, fuel quality and specifications, alternate fuels, biofuels, antioxidants, deposit control detergents/dispersants, stabilizers, corrosion inhibitors, and polymeric fuel-additives. Fuels and Fuel-Additives covers all stages and facets of the production of engine fuels as well as heating and fuel oils. The book begins with a quick portrait of the future of fuels and fuel production. Then, it sets forth the regulations controlling exhaust gas emissions and fuel quality from around the world. Next, the book covers: Processing of engine fuels derived from crude oil, including the production of blending components Production of alternative fuels Fuel-additives for automotive engines Blending of fuels Key properties of motor fuels and their effects on engines and the environment Aviation fuels The final chapter of the book deals with fuel oils and marine fuels. Each chapter is extensively referenced, providing a gateway to the primary and secondary literature in the field. At the end of the book, a convenient glossary defines all the key terms used in the book. Examining the full production cycle from feedstocks to final products, Fuels and Fuel-Additives is recommended for students, engineers, and scientists working in fuels and energy production.
Download or read book Federal Register written by and published by . This book was released on 2000-06 with total page 1508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diesel lean NOx Catalyst Technologies written by Society of Automotive Engineers and published by SAE International. This book was released on 1996 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lieder zur Feier des f nfj hrigen Bestehens der Universit t Stra burg written by and published by . This book was released on 1877 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalytic Air Pollution Control written by Ronald M. Heck and published by John Wiley & Sons. This book was released on 2016-03-07 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalytic Air Pollution Control: Commercial Technology is the primary source for commercial catalytic air pollution control technology, offering engineers a comprehensive account of all modern catalytic technology. This Third Edition covers all the new advances in technology in automotive catalyst control technology, diesel engine catalyst control technology, small engine catalyst control technology, and alternate sustainable fuels for auto and diesel.
Download or read book Catalytic Control of CO HC NOx PM from Diesel Fuelled Vehicles written by Ram Prasad and published by LAP Lambert Academic Publishing. This book was released on 2014-10-16 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diesel engines are preferred system over the gasoline, due to their high fuel efficiency, low-operating cost, high durability and low CO2 emission. However, emissions of NOx and soot as well as CO and HCs from diesel engines are major concern due to severe health and environment effects. Further, Euro-6/Euro-VI standards for light duty/heavy duty vehicles are implemented in Sept. 2014 require additional reduction of 56%/80% in NOx and 10%/67% in soot emissions compared to Euro-5/Euro-V levels respectively. Four way catalysts (FWC) seem to be a possible single-component technology solution to control total emissions. In the present work, the double layers of catalysts containing perovskite and Cu-ZSM5 were explored for the same purpose. La0.6K0.4CoO3 catalyst along with Cu-ZSM showed 100% conversion of NOx at 450oC with peak temperature of soot combustion at 420oC, the temperature of the HC total conversion was 480oC, and 100% conversion of CO was at 388oC which are in the range of exhaust temperature of 150-450 C. The activity order of double layers catalysts is as follows: La0.6K0.4CoO3 (Sol-gel)+Cu-ZSM-5 > La0.6K0.4CoO3 (Sol-gel) + Ag/Al2O3 > La0.6K0.4CoO3 (Co-ppt)
