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Piston Ring Designs For Reduced Friction
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Book Synopsis Piston Ring Designs for Reduced Friction by : Stephen H. Hill
Download or read book Piston Ring Designs for Reduced Friction written by Stephen H. Hill and published by . This book was released on 1984 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Piston Ring Design for Reduced Friction in Modern Internal Combustion Engines by : Grant Smedley
Download or read book Piston Ring Design for Reduced Friction in Modern Internal Combustion Engines written by Grant Smedley and published by . This book was released on 2004 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) Experimental results conducted on a full-scale natural gas power generation engine supported the model predictions for the low-tension oil control ring design. The predicted reduction in piston ring friction would translate to a 0.5-1% increase in brake thermal efficiency, which would result in a significant improvement in fuel economy and a substantial reduction in emissions over the life of the engine.
Book Synopsis A Multi-scale Model for Piston Ring Dynamics, Lubrication and Oil Transport in Internal Combustion Engines by : Camille Baelden
Download or read book A Multi-scale Model for Piston Ring Dynamics, Lubrication and Oil Transport in Internal Combustion Engines written by Camille Baelden and published by . This book was released on 2014 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fuel consumption reduction of more than 20% can be achieved through engine friction reduction. Piston and piston rings contribute approximately half of the total engine friction and are therefore central to friction reduction efforts. The most common method to reduce mechanical losses from piston rings has been to lower ring tension, the normal force providing sealing between the piston ring and the cylinder liner. However tension reduction can result in additional lubricant consumption. The objective of this thesis is to understand and model the physical mechanisms resulting in flow of oil to the combustion chamber in order to achieve optimal designs of piston rings. The optimal design is a compromise between friction reduction and adequate gas and lubricant sealing performance. To do so a multi-scale curved beam finite element model of piston ring is developed. It is built to couple ring deformation, dynamics and contact with the piston and the cylinder. Oil flow at the interfaces between the ring and the cylinder liner and between the ring and the piston groove can thus be simulated. The piston ring model is used to study the sealing performance of the Oil Control Ring (OCR), whose function is to limit the amount of oil supplied to the ring pack. The contributions of the three main mechanisms previously identified, to oil flow past the OCR are quantified: - Deformation of the cylinder under operating conditions can lead to a loss of contact between the ring and the liner. - Tilting of the piston around its pin can force the OCR to twist and scrape oil from the liner. - Oil accumulating below the OCR can flow to the groove and leak on the top of the OCR The OCR is found to be flexible enough to limit the impact of cylinder deformation on oil consumption. Both ring scraping and flow through the OCR groove can contribute to oil consumption in the range of engine running conditions simulated. Reduction of scraping is possible by increasing the ability of both OCR lands to maintain contact with the liner regardless of piston groove tilt. The flow of oil through the OCR groove can be reduced by designing appropriate draining of oil in the groove and an adequate oil reservoir below the OCR. The piston ring oil transport model developed in this thesis will be a valuable tool to optimize ring pack designs to achieve further ring pack friction reduction without increasing oil consumption.
Book Synopsis Tribological Research and Design for Engineering Systems by : D. Dowson
Download or read book Tribological Research and Design for Engineering Systems written by D. Dowson and published by Elsevier. This book was released on 2003-07-17 with total page 941 pages. Available in PDF, EPUB and Kindle. Book excerpt: These papers represent the proceedings from the 29th Leeds-Lyon Symposium on Tribology, 'Tribological Research and Design for Engineering Systems' which was held in September 2002. Over 130 delegates from 18 countries attended the symposium, and the extensive discussions generated over 150 written questions and responses, which are documented at the end of this proceedings volume. There have been many advances in the field of tribology in recent years, with progress being made in the engineering and interaction of surfaces; micro and nano-tribology; elastohydrodynamics; surface films; surface texture; tribochemistry; wear and life prediction; with both experimental and theoretical contributions. These advances were reviewed, and the impact of this understanding on the fundamentals upon total engineering activity in design, manufacture and machine operation were considered. Readership: Scientists and researchers in the field of tribology.
Download or read book Highway Safety Literature written by and published by . This book was released on 1973 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lubrication at the Frontier: The Role of the Interface and Surface Layers in the Thin Film and Boundary Regime by : M. Priest
Download or read book Lubrication at the Frontier: The Role of the Interface and Surface Layers in the Thin Film and Boundary Regime written by M. Priest and published by Elsevier. This book was released on 1999-07-01 with total page 911 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 25th Leeds-Lyon Symposium on Tribology was held at the Institut des Sciences Appliquées de Lyon, from 8-11th September, 1998. Its central theme was, "Lubrication at the frontier: the role of the interface and surface layers in the thin film and boundary regime". This topic was chosen because it represents an important evolution of the research field.The Symposium opened with a keynote address entitled "Role of surface-anchored polymer chains in polymer friction" which described the processes taking place at the interface between "solid" and "liquid". The keynote address was followed by two invited lectures. Firstly, "Fuel efficient engine oils, additive interactions, boundary friction and wear" presented the industrial point of view on lubricant formulation and engine testing and its evolution. The second lecture was entitled "For establishment of a new EHL theory" and stressed the need to extend the current EHL theory.Beginning in 1974, The Leeds-Lyon Symposia have now covered a wide range of topics. The essential aim each year is to select a topic of current interest to tribologists and to contribute to further the advance of knowledge in selected fields.
Book Synopsis Technological Improvements to Automobile Fuel Consumption: Executive summary by : C. W. Coon
Download or read book Technological Improvements to Automobile Fuel Consumption: Executive summary written by C. W. Coon and published by . This book was released on 1974 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technological Improvements to Automobile Fuel Consumption by : C. W. Coon
Download or read book Technological Improvements to Automobile Fuel Consumption written by C. W. Coon and published by . This book was released on 1974 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Motor Vehicle Emissions: a Bibliography with Abstracts. Special Bibliography by :
Download or read book Motor Vehicle Emissions: a Bibliography with Abstracts. Special Bibliography written by and published by . This book was released on 1974 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Text Book of Machine Design by : Rajendra Karwa
Download or read book A Text Book of Machine Design written by Rajendra Karwa and published by Firewall Media. This book was released on 2002 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Fluid Power Design Handbook, Third Edition by : Frank Yeaple
Download or read book Fluid Power Design Handbook, Third Edition written by Frank Yeaple and published by CRC Press. This book was released on 1995-10-24 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maintaining and enhancing the high standards and excellent features that made the previous editions so popular, this book presents engineering and application information to incorporate, control, predict, and measure the performance of all fluid power components in hydraulic or pneumatic systems. Detailing developments in the ongoing "electronic revolution" of fluid power control, the third edition offers new and enlarged coverage of microprocessor control, "smart" actuators, virtual displays, position sensors, computer-aided design, performance testing, noise reduction, on-screen simulation of complex branch-flow networks, important engineering terms and conversion units, and more.
Book Synopsis Advances in Engineering Design and Optimization by : Yi Min Deng
Download or read book Advances in Engineering Design and Optimization written by Yi Min Deng and published by Trans Tech Publications Ltd. This book was released on 2010-11-11 with total page 1716 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineering design and optimization are important tasks, and activities which are essential for the success of product development and application. Volume is indexed by Thomson Reuters CPCI-S (WoS). This two-volume book is a collection of 349 peer-reviewed papers that present state-of-the-art research results in the broad areas of engineering design and optimization; including those that are directly related to the design and optimization of engineered products, and those that are related to the design and optimization of engineering processes where the latter are essential to the manufacturing process.
Download or read book Motor Travel written by and published by . This book was released on 1925 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by and published by . This book was released on 1922 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the ... U.S. DOE Hydrogen Program Review by :
Download or read book Proceedings of the ... U.S. DOE Hydrogen Program Review written by and published by . This book was released on 1997 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report - National Advisory Committee for Aeronautics by : United States. National Advisory Committee for Aeronautics
Download or read book Report - National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1928 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: