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Comparison Of Clean Diesel Buses To Cng Buses
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Book Synopsis COMPARISON OF CLEAN DIESEL BUSES TO CNG BUSES. by : C. Bush
Download or read book COMPARISON OF CLEAN DIESEL BUSES TO CNG BUSES. written by C. Bush and published by . This book was released on 2003 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using previously published data on regulated and unregulated emissions, this paper will compare the environmental performance of current generation transit buses operated on compressed natural gas (CNG) to current generation transit buses operated on ultra low sulfur diesel fuel (ULSD) and incorporating diesel particulate filters (DPF). Unregulated emissions evaluated include toxic compounds associated with adverse health effects (carbonyl, PAH, NPAH, benzene) as well as PM particle count and size distribution. For all regulated and unregulated emissions, both technologies are shown to be comparable. DPF equipped diesel buses and CNG buses have virtually identical levels of PM mass emissions and particle number emissions. DPF-equipped diesel buses have lower HC and CO emissions and lower emissions of toxic substances such as benzene, carbonyls and PAHs than CNG buses. CNG buses have lower NOx emissions than DPF-equipped buses, though CNG bus NOx emissions are shown to be much more variable. In addition, this paper will compare the capital and operating costs of CNG and DPF-equipped buses. The cost comparison is primarily based on the experience of MTA New York City Transit in operating CNG buses since 1995 and DPF-equipped buses fueled with ULSD since 2001. Published data on the experience of other large transit agencies in operating CNG buses is used to validate the NYCT experience. The incremental cost (compared to ''baseline'' diesel) of operating a typical 200-bus depot is shown to be six times higher for CNG buses than for ''clean diesel'' buses. The contributors to this increased cost for CNG buses are almost equally split between increased capital costs for purchase of buses and installation of fueling infrastructure, and increased operating costs for purchase of fuel, bus maintenance, and fuel station maintenance.
Download or read book Breathing Clean written by Masami Kojima and published by World Bank Publications. This book was released on 2001-01-01 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because evidence that shows that diesel fumes are more toxic than was previously thought, there has been increased interest in the use of natural gas for vehicles operating in cities. Transit buses, traditionally fueled by diesel, are one of the cheapest forms of mass transit. They are also significant polluters and typically operate in heavily congested urban areas, where significant air pollution problems exist. The report provides an overview of the issues that must be considered when evaluating natural gas an alternative to diesel for use in transit buses.
Book Synopsis A Three Year Comparison of Natural Gas and Diesel Transit Buses by : Bruce E. Finley
Download or read book A Three Year Comparison of Natural Gas and Diesel Transit Buses written by Bruce E. Finley and published by . This book was released on 1999 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-year Comparison of Natural Gas and Diesel Transit Buses by : Sacramento Regional Transit District
Download or read book Three-year Comparison of Natural Gas and Diesel Transit Buses written by Sacramento Regional Transit District and published by . This book was released on 1999 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidebook for Evaluating Fuel Choices for Post-2010 Transit Bus Procurements by :
Download or read book Guidebook for Evaluating Fuel Choices for Post-2010 Transit Bus Procurements written by and published by Transportation Research Board. This book was released on 2011 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's Transit Cooperative Research Program (TCRP) Report 146: Guidebook for Evaluating Fuel Choices for Post-2010 Transit Bus Procurements is designed to help those considering the deployment of, or conversion to, alternative fuel buses.
Book Synopsis Hybrid-electric Transit Buses by : Northeast Advanced Vehicle Consortium
Download or read book Hybrid-electric Transit Buses written by Northeast Advanced Vehicle Consortium and published by . This book was released on 2000 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents an up-to-date description of emerging hybrid-electric drive technology for transit buses in the United States. The technology and its status, benefits, life-cycle costs, and deployment issues are discussed. The report is intended to provide transit agencies with information to compare the emissions and fuel economy expected from hybrid-electric transit buses with those expected from clean diesel or alternatively fueled buses.
Book Synopsis Guidebook for Evaluating, Selecting, and Implementing Fuel Choices for Transit Bus Operations by : ARCADIS Geraghty & Miller, Inc
Download or read book Guidebook for Evaluating, Selecting, and Implementing Fuel Choices for Transit Bus Operations written by ARCADIS Geraghty & Miller, Inc and published by Transportation Research Board. This book was released on 1998 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis In-Use Performance Comparison of Hybrid Electric, CNG, and Diesel Buses at New York City Transit by :
Download or read book In-Use Performance Comparison of Hybrid Electric, CNG, and Diesel Buses at New York City Transit written by and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Renewable Energy Laboratory (NREL) evaluated the performance of diesel, compressed natural gas (CNG), and hybrid electric (equipped with BAE Systems? HybriDrive propulsion system) transit buses at New York City Transit (NYCT). CNG, Gen I and Gen II hybrid electric propulsion systems were compared on fuel economy, maintenance and operating costs per mile, and reliability.
Book Synopsis Bus Systems for the Future by : International Energy Agency
Download or read book Bus Systems for the Future written by International Energy Agency and published by . This book was released on 2002 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cities around the world face enormous problems of transport sustainability. Rapidly increasing populations and vehicle usage have created gridlock and sprawl, even in very poor cities, as well as unacceptably high levels of air pollution, noise, and accident rates. But improvements can be made. This book explores how the provision of better bus services can bring concrete solutions. "Bus rapid transit" systems emerging in Latin America provide fast, reliable and efficient urban travel for large numbers of people. Express busways, employing high-capacity buses and new technologies such as GPS-based bus tracking systems, can conveniently and reliably move up to 10 times as many people along a route as can cars - and be profitable. This book shows how bus rapid transit differs from traditional bus systems and how it can be developed around the world. There is a detailed look at clean fuels and advanced technologies such as "clean diesel", CNG, hybrid-electric and fuel cells. Case studies are made of six cities and of the steps each might take to encourage more sustainable transport systems
Book Synopsis COMPARATIVE STUDY ON EXHAUST EMISSIONS FROM DIESEL- AND CNG-POWERED URBAN BUSES. by :
Download or read book COMPARATIVE STUDY ON EXHAUST EMISSIONS FROM DIESEL- AND CNG-POWERED URBAN BUSES. written by and published by . This book was released on 2003 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Couple years ago, ADEME engaged programs dedicated to the urban buses exhaust emissions studies. The measures associated with the reduction of atmospheric and noise pollution has particular importance in the sector of urban buses. In many cases, they illustrate the city's environmental image and contribute to reinforcing the attractiveness of public transport. France's fleet in service, presently put at about 14,000 units, consumes about 2 per cent of the total energy of city transport. It causes about 2 per cent of the HC emissions and from 4 to 6 per cent of the NOx emissions and particles. These vehicles typically have a long life span (about 15 years) and are relatively expensive to buy, about 150.000 euros per unit. Several technical solutions were evaluated to quantify, on a real condition cycle for buses, on one hand pollutants emissions, fuel consumption and on the other hand reliability, cost in real existing fleet. This paper presents main preliminary results on urban buses exhaust emission on two different cases: - existing Diesel buses, with fuel modifications (Diesel with low sulphur content), Diesel with water emulsion and bio-Diesel (30% oil ester in standard Diesel fuel); renovating CNG powered Euro II buses fleet, over representative driving cycles, set up by ADEME and partners. On these cycles, pollutants (regulated and unregulated) were measured as well as fuel consumption, at the beginning of a program and one year after to quantify reliability and increase/decrease of pollutants emissions. At the same time, some after-treatment technologies were tested under real conditions and several vehicles. Information such as fuel consumption, lubricant analysis, problem on the technology were following during a one year program. On the overall level, it is the combination of various action, pollution-reduction and renewal that will make it possible to meet the technological challenge of reducing emissions and fuel consumption by urban bus networks.
Book Synopsis Urban Transit Systems and Technology by : Vukan R. Vuchic
Download or read book Urban Transit Systems and Technology written by Vukan R. Vuchic and published by John Wiley & Sons. This book was released on 2007-02-16 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the only current and in print book covering the full field of transit systems and technology. Beginning with a history of transit and its role in urban development, the book proceeds to define relevant terms and concepts, and then present detailed coverage of all urban transit modes and the most efficient system designs for each. Including coverage of such integral subjects as travel time, vehicle propulsion, system integration, fully supported with equations and analytical methods, this book is the primary resource for students of transit as well as those professionals who design and operate these key pieces of urban infrastructure.
Book Synopsis Evaluating the Emission Reduction Benefits of WMATA Natural Gas Buses by :
Download or read book Evaluating the Emission Reduction Benefits of WMATA Natural Gas Buses written by and published by . This book was released on 2003 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fact sheet details comparison of emissions of natural gas and diesel transit buses.
Download or read book Natural Gas Buses written by and published by . This book was released on 2000 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing numbers of transit agencies across North America are making the choice to convert their bus fleets to compressed natural gas (CNG), and even more are seriously considering it. Natural gas buses now account for at least 20% of all new bus orders. However, it becomes difficult for fleet operators to fairly evaluate the potential benefits of an alternative fuel program if they are confronted with misinformation or poor comparisons based on false assumptions. This fact sheet addresses some of the most common misconceptions that seem to work their way into anecdotal stories, media reports, and even some poorly researched white papers and feasibility studies. It is an expanded version of information that was presented on behalf of the U.S. Department of Energy at the South Coast Air Basin Alternative Fuel and Electric Transit Bus Workshop in Diamond Bar, California, on March 15, 2000.
Book Synopsis Comparison of Emissions and Energy Consumptions Between a Conventional Diesel School Bus and a Plug-in Hybrid School Bus, Emphasizes on Recharging by : Claire Anne Florette
Download or read book Comparison of Emissions and Energy Consumptions Between a Conventional Diesel School Bus and a Plug-in Hybrid School Bus, Emphasizes on Recharging written by Claire Anne Florette and published by . This book was released on 2010 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantifying the emissions due to the charging of the batteries of the plug-in hybrid electricity school bus operated by the Austin Independent School District (AISD) is the focus of this work. This plug-in hybrid school bus is one of only nineteen in the country, and was manufactured by IC Corporation. This hybrid school bus reduces fuel consumption and CO2, NOx and PM emissions in comparison with conventional diesel buses. This reduction is good for the health of the children who take the school bus everyday as they are part of the population the most at risk because their lungs are still developing. In order to evaluate CO2, NOx and PM emissions, measurements of the charging of the batteries versus time were taken for the two charging periods each day during the months of April and May 2009. These measurements were repeated in October 2009 when the route was changed for the new school year: 2009-2010. An analysis of the Austin electricity mix that provides electricity to the bus center was done hour by hour to evaluate the emissions, calculated on a g/mile basis. Measurements of the vehicle speed versus time and altitude were taken during February 2010 in order to explain some of the differences observed between the two routes. Different parameters were studied to analyze the results. The first parameter studied was the impact of the season on the emissions. The second parameter studied was the impact of the route and its characteristics (road length, traffic, grade, etc.). The last parameter studied was the difference between two methods used to evaluate the emissions using the electricity mix data. These two methods are different but each of them brings something to the analysis of the results.
Book Synopsis Emissions and Fuel Consumption of Natural Gas Powered City Buses Versus Diesel Buses in Real-city Traffic by : L. Pelkmans
Download or read book Emissions and Fuel Consumption of Natural Gas Powered City Buses Versus Diesel Buses in Real-city Traffic written by L. Pelkmans and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :International Energy Agency Publisher :Organisation for Economic Co-Operation and Development ISBN 13 : Total Pages :204 pages Book Rating :4.3/5 (21 download)
Book Synopsis Bus Systems for the Future by : International Energy Agency
Download or read book Bus Systems for the Future written by International Energy Agency and published by Organisation for Economic Co-Operation and Development. This book was released on 2002 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cities around the world face enormous problems of transport sustainability. Rapidly increasing populations and vehicle usage have created gridlock and sprawl, even in very poor cities, as well as unacceptably high levels of air pollution, noise, and accident rates. But improvements can be made. This book explores how the provision of better bus services can bring concrete solutions. "Bus rapid transit" systems emerging in Latin America provide fast, reliable and efficient urban travel for large numbers of people. Express busways, employing high-capacity buses and new technologies such as GPS-based bus tracking systems, can conveniently and reliably move up to 10 times as many people along a route as can cars - and be profitable. This book shows how bus rapid transit differs from traditional bus systems and how it can be developed around the world. There is a detailed look at clean fuels and advanced technologies such as "clean diesel", CNG, hybrid-electric and fuel cells. Case studies are made of six cities and of the steps each might take to encourage more sustainable transport systems.
Book Synopsis Comparison of a Gasoline-powered School Bus Versus a Diesel-powered School Bus by : Harold Hammond Macklin jr
Download or read book Comparison of a Gasoline-powered School Bus Versus a Diesel-powered School Bus written by Harold Hammond Macklin jr and published by . This book was released on 1954 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
