Download or read book Development of the High Pressure Direct Injected Ultra Low NOx Natural Gas Engine written by and published by . This book was released on 2004 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subcontractor report details work done by Cummins and Westport Innovations to develop a heavy-duty, low-NOx, high-pressure direct-injection natural gas engine for the Next Generation Natural Gas Vehicle activity.

Download or read book Development of the High pressure Direct injected Ultra Low NO subscript X Natural Gas Engine written by Vinod K. Duggal and published by . This book was released on 2004 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of the High Pressure Direct Injection ISX G Natural Gas Engine written by and published by . This book was released on 2004 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fact sheet details work by Cummins and Westport Innovations to develop a heavy-duty, low-NOx, high-pressure direct-injection natural gas engine for the Next Generation Natural Gas Vehicle activity.

Download or read book Development of the High Pressure Direct Injection ISX G Natural Gas Engine written by and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fact sheet details work by Cummins and Westport Innovations to develop a heavy-duty, low-NOx, high-pressure direct-injection natural gas engine for the Next Generation Natural Gas Vehicle activity.

Download or read book Natural Gas Engines written by Kalyan Kumar Srinivasan and published by Springer. This book was released on 2018-11-03 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the various advanced reciprocating combustion engine technologies that utilize natural gas and alternative fuels for transportation and power generation applications. It is divided into three major sections consisting of both fundamental and applied technologies to identify (but not limited to) clean, high-efficiency opportunities with natural gas fueling that have been developed through experimental protocols, numerical and high-performance computational simulations, and zero-dimensional, multizone combustion simulations. Particular emphasis is placed on statutes to monitor fine particulate emissions from tailpipe of engines operating on natural gas and alternative fuels.

Download or read book STATE OF THE ART AND FUTURE DEVELOPMENTS IN NATURAL GAS ENGINE TECHNOLOGIES written by M. Dunn and published by . This book was released on 2003 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current, state of the art natural gas engines provide the lowest emission commercial technology for use in medium heavy duty vehicles. NOx emission levels are 25 to 50% lower than state of the art diesel engines and PM levels are 90% lower than non-filter equipped diesels. Yet, in common with diesel engines, natural gas engines are challenged to become even cleaner and more efficient to meet environmental and end-user demands. Cummins Westport is developing two streams of technologies to achieve these goals for medium-heavy and heavy-heavy duty applications. For medium-heavy duty applications, lowest possible emissions are sought on SI engines without significant increase in complexity and with improvements in efficiency and BMEP. The selected path builds on the capabilities of the CWI Plus technology and recent diesel engine advances in NOx controls, providing potential to reduce emissions to 2010 values in an accelerated manner and without the use of Selective Catalytic Reduction or NOx Storage and Reduction technology. For heavy-heavy duty applications where high torque and fuel economy are of prime concern, the Westport-Cycle{trademark} technology is in field trial. This technology incorporates High Pressure Direct Injection (HPDI{trademark}) of natural gas with a diesel pilot ignition source. Both fuels are delivered through a single, dual common rail injector. The operating cycle is entirely unthrottled and maintains the high compression ratio of a diesel engine. As a result of burning 95% natural gas rather than diesel fuel, NOx emissions are halved and PM is reduced by around 70%. High levels of EGR can be applied while maintaining high combustion efficiency, resulting in extremely low NOx potential. Some recent studies have indicated that DPF-equipped diesels emit less nanoparticles than some natural gas vehicles [1]. It must be understood that the ultrafine particles emitted from SI natural gas engines are generally accepted to consist predominantly of VOCs [2], and that lubricating oil is a major contributor. Fitting an oxidation catalyst to the natural gas engine leads to a reduction in nanoparticles emissions in comparison to engines without aftertreatment [2,3,4]. In 2001, the Cummins Westport Plus technology was introduced with the C Gas Plus engine, a popular choice for transit bus applications. This incorporates drive by wire, fully integrated, closed loop electronic controls and a standard oxidation catalyst for all applications. The B Gas Plus and the B Propane Plus engines, with application in shuttle and school buses were launched in 2002 and 2003. The gas-specific oxidation catalyst operates in concert with an optimized ring-pack and liner combination to reduce total particulate mass below 0.01g/bhphr, combat ultrafine particles and control VOC emissions.

Download or read book Advances in Natural Gas Technology written by Hamid Al-Megren and published by BoD – Books on Demand. This book was released on 2012-04-11 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural gas is a vital component of the world's supply of energy and an important source of many bulk chemicals and speciality chemicals. It is one of the cleanest, safest, and most useful of all energy sources, and helps to meet the world's rising demand for cleaner energy into the future. However, exploring, producing and bringing gas to the user or converting gas into desired chemicals is a systematical engineering project, and every step requires thorough understanding of gas and the surrounding environment. Any advances in the process link could make a step change in gas industry. There have been increasing efforts in gas industry in recent years. With state-of-the-art contributions by leading experts in the field, this book addressed the technology advances in natural gas industry.

Download or read book Development of a Direct injected Natural Gas Engine System for Heavy duty Vehicles written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of a Direct injected Natural Gas Engine System for Heavy duty Vehicles written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The transportation sector accounts for approximately 65% of US petroleum consumption. Consumption for light-duty vehicles has stabilized in the last 10--15 years; however, consumption in the heavy-duty sector has continued to increase. For various reasons, the US must reduce its dependence on petroleum. One significant way is to substitute alternative fuels (natural gas, propane, alcohols, and others) in place of petroleum fuels in heavy-duty applications. Most alternative fuels have the additional benefit of reduced exhaust emissions relative to petroleum fuels, thus providing a cleaner environment. The best long-term technology for heavy-duty alternative fuel engines is the 4-stroke cycle, direct injected (DI) engine using a single fuel. This DI, single fuel approach maximizes the substitution of alternative fuel for diesel and retains the thermal efficiency and power density of the diesel engine. This report summarizes the results of the first year (Phase 1) of this contract. Phase 1 focused on developing a 4-stroke cycle, DI single fuel, alternative fuel technology that will duplicate or exceed diesel power density and thermal efficiency, while having exhaust emissions equal to or less than the diesel. Although the work is currently on a 3500 Series DING engine, the work is viewed as a basic technology development that can be applied to any engine. Phase 1 concentrated on DING engine component durability, exhaust emissions, and fuel handling system durability. Task 1 focused on identifying primary areas (e.g., ignition assist and gas injector systems) for future durability testing. In Task 2, eight mode-cycle-averaged NO(subscript x) emissions were reduced from 11.8 gm/hp-hr (baseline conditions) to 2.5 gm/hp-hr (modified conditions) on a 3501 DING engine. In Task 3, a state-of-the-art fuel handling system was identified.

Download or read book Advances in Compression Ignition Natural Gas Diesel Dual Fuel Engines written by Hongsheng Guo and published by Frontiers Media SA. This book was released on 2021-03-23 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Direct Injection Combustion Engine Technologies and Development written by H Zhao and published by Elsevier. This book was released on 2009-12-18 with total page 761 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book On road Heavy duty Development Integration and Demonstration of Ultra low Emission Natural Gas Engines written by Tim Antcliff and published by . This book was released on 2019 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultra low Emission Natural Gas 12 liter Engine for On road Heavy duty Vehicles written by Ben Zwissler and published by . This book was released on 2019 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 2012 Natural Gas Research Development and Demonstration Report written by Linda Schrupp and published by . This book was released on 2012 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pounder s Marine Diesel Engines and Gas Turbines written by Malcolm Latarche and published by Butterworth-Heinemann. This book was released on 2020-12-01 with total page 958 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pounder's Marine Diesel Engines and Gas Turbines, Tenth Edition, gives engineering cadets, marine engineers, ship operators and managers insights into currently available engines and auxiliary equipment and trends for the future. This new edition introduces new engine models that will be most commonly installed in ships over the next decade, as well as the latest legislation and pollutant emissions procedures. Since publication of the last edition in 2009, a number of emission control areas (ECAs) have been established by the International Maritime Organization (IMO) in which exhaust emissions are subject to even more stringent controls. In addition, there are now rules that affect new ships and their emission of CO2 measured as a product of cargo carried. - Provides the latest emission control technologies, such as SCR and water scrubbers - Contains complete updates of legislation and pollutant emission procedures - Includes the latest emission control technologies and expands upon remote monitoring and control of engines

Download or read book Development of a Direct injected Natural Gas Engine System for Heavy duty Vehicles written by and published by . This book was released on 2000 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the results of Phase 2 of this contract. The authors completed four tasks under this phase of the subcontract. (1) They developed a computational fluid dynamics (CFD) model of a 3500 direct injected natural gas (DING) engine gas injection/combustion system and used it to identify DING ignition/combustion system improvements. The results were a 20% improvement in efficiency compared to Phase 1 testing. (2) The authors designed and procured the components for a 3126 DING engine (300 hp) and finished assembling it. During preliminary testing, the engine ran successfully at low loads for approximately 2 hours before injector tip and check failures terminated the test. The problems are solvable; however, this phase of the program was terminated. (3) They developed a Decision & Risk Analysis model to compare DING engine technology with various other engine technologies in a number of commercial applications. The model shows the most likely commercial applications for DING technology and can also be used to identify the sensitivity of variables that impact commercial viability. (4) MVE, Inc., completed a preliminary design concept study that examines the major design issues involved in making a reliable and durable 3,000 psi LNG pump. A primary concern is the life of pump seals and piston rings. Plans for the next phase of this program (Phase 3) have been put on indefinite hold. Caterpillar has decided not to fund further DING work at this time due to limited current market potential for the DING engine. However, based on results from this program, the authors believe that DI natural gas technology is viable for allowing a natural gas-fueled engine to achieve diesel power density and thermal efficiency for both the near and long terms.

Download or read book COMBUSTION DEVELOPMENT OF A HIGH LOAD HIGH EFFICIENCY MICRO PILOT DIESEL NATURAL GAS ENGINE written by and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : The conventional internal combustion engine will continue to exist for a long time. Likewise, demand for higher output efficiencies, higher specific power output, increased reliability, and lower emissions will continue to grow. There is also a growing requirement to run on various gaseous fuels and natural gas, whether for environmental, economic, or resource conservation reasons. This dissertation investigates a 6.7L diesel engine converted to run stoichiometric diesel micro-pilot / natural gas premix combustion with a maximum diesel contribution target of 5% of the total fuel energy with a three-way catalyst aftertreatment. The research centers on investigating the dominant factors and their impact on the critical barriers of this technology, including the positive and negative impact on combustion stability at low loads, the most influential factors and their impact on maximizing thermal efficiency at medium loads, the controlling parameters at preventing combustion knock at high-loads, and the ability of the three-way catalyst to minimize emissions. A diesel-like efficiency of 41% brake thermal efficiency was achieved with a high load output of 23 bar brake mean effective pressure when operating in the micro-pilot mode. This operating condition reduced up to 25% brake-specific CO2 emissions compared to diesel-only. Low loads can be achieved by delaying combustion phasing, reducing the injection pressure, adding exhaust gas to the intake, and increasing the total diesel pilot quantity. Maintaining stable ignition of the diesel pilot becomes a challenge at low loads, as the intake pressure is reduced; the chamber pressure at diesel injection decreases, and the presence of a near-stoichiometric mixture of NG will act to inhibit the diesel ignition. As such, maintaining the stoichiometric combustion resulted in a minimum load output of 5 bar BMEP. The pilot injection pressure reduction improved combustion stability at lower loads. While lean operation enabled further load reduction, it precludes using a three-way catalyst to control NOx emissions. At medium loads, a design of experiments investigation revealed that, when the equivalence ratio is constrained at stoichiometric, exhaust gas recirculation and pilot injection timing are the most influential factors in controlling combustion and performance metrics. In contrast, intake air temperature and pilot injection pressure showed the least sensitivity. While it was possible to achieve 25 bar BMEP for high loads, such operation was limited by pre-ignition. Exhaust gas recirculation and pilot injection timing can mitigate abnormal combustion effectively. At a steady-state, near stoichiometric condition, it was observed that the catalyst operates efficiently, consistent with a three-way catalyst operation with very low NOx and unburned methane emissions. Overall, this dissertation demonstrates that diesel-like performance can be achieved with the stoichiometric micro-pilot concept and provides an understanding of the primary controlling factors and their limitations.