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Author : Ingard Kvernes
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (319 download)
Download or read book Development and Engine Testing of Coatings on Diesel Engine Components written by Ingard Kvernes and published by . This book was released on 1979 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ingard Kvernes
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (481 download)
Download or read book Development and Engine Testing of Coatings on Diesel Engine Components written by Ingard Kvernes and published by . This book was released on 1979 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ingard Kvernes
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (11 download)
Download or read book Development and Engine Testing of Coatings on Diesel Engine Components written by Ingard Kvernes and published by . This book was released on 1979 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Engine Testing of Coatings on Diesel Engine Components, January 1978--December 1978 written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of coating has been tested in a laboratory combustion test rig in order to select coating for further testing on valves and pistons onboard ships. These coatings bonded well to the base material, but had different corrosion resistance. A nickel--chromium--aluminum--yttrium alloy proved to be the best alloy coatings as far as corrosion resistance is concerned. High proportion of oxide in a metal coating did increase the corrosion rate. Coatings of nickel--chromium--aluminum--yttrium alloy with an intermediate layer of chromium and a top coat of yttria stabilized zirconia show no sign of corrosion of cracks even after 120 hours testing in the combustion rig or after 6000 hours on a valve plate in a large bore diesel engine in service. A detailed microstructure analysis of the SI-thermalbarrier coating system used in full scale onboard a ship has to be postponed due to delay in getting the valves returned to Norway.
Author : M. G. S. Naylor
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)
Download or read book Development of Wear-resistant Ceramic Coatings for Diesel Engine Components - Volume 1: Coating Development and Tribological Testing. Report written by M. G. S. Naylor and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 195 pages
Book Rating : 4.:/5 (16 download)
Download or read book Development of Wear-resistant Ceramic Coatings for Diesel Engine Components written by and published by . This book was released on 1992 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tribological properties of a variety of advanced coating materials have been evaluated under conditions which simulate the piston ring -- cylinder liner environment near top ring reversal in a heavy duty diesel engine. Coated ring'' samples were tested against a conventional pearlitic grey cast iron liner material using a high temperature reciprocating wear test rig. Tests were run with a fresh CE/SF 15W40lubricant at 200 and 350°C, with a high-soot, engine-tested oil at 200°C and with no lubrication at 200°C. For lowest wear under boundary lubricated conditions, the most promising candidates to emerge from this study were high velocity oxy-fuel (HVOF) Cr3 C2 - 20% NiCr and WC - 12% Co cermets, low temperature arc vapor deposited (LTAVD) CrN and plasma sprayed chromium oxides. Also, plasma sprayed Cr2O3 and A12O3-ZrO2 materials were found to give excellent wear resistance in unlubricated tests and at extremely high temperatures (450°C) with a syntheticoil. All of these materials would offer substantial wear reductions compared to the conventional electroplated hard chromium ring facing and thermally sprayed metallic coatings, especially at high temperatures and with high-soot oils subjected to degradation in diesel environments. The LTAVD CrN coating provided the lowest lubricated wear rates of all the materials evaluated, but may be too thin (4?m) for use as a top ring facing. Most of the coatings evaluated showed higher wear rates with high-soot, engine-tested oil than with fresh oil, with increases of more than a factor of ten in some cases. Generally, metallic materials were found to be much more sensitive to soot/oil degradation than ceramic and cermet coatings. Thus, decreased soot sensitivity'' is a significant driving force for utilizing ceramic or cermet coatings in diesel engine wear applications.
Download or read book Ceramic Coatings on Diesel Engine Components. Period Covered written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Diesel engines with imporved thermal efficiency and fuel economy or flexibility will be required to meet automotive energy conservation goals. These goals can be met by minimizing engine heat loss to the coolant, i.e., by the use of a thermal insulating barrier on the interior surfaces of the combustion space. The development and testing of ceramic coatings for diesel engine components are discussed. These coatings include oxides of Al, Cr, Zr, Mg, Si, Ti, and Ca, and Mo and Ch carbides. Data on their application and thermodynamic and wear characteristics are presented. It was concluded that, although the spraying processes used have not been optimized, plasma-spray technology has made it possible to coat diesel engine parts with ceramic materials. Preliminary results show that, relative to valves and piston crowns: stabilized ZrO2 coating under certain conditions increases the working life of various components; higher combustion temperature may improve the thermal efficiency by increased turbocharger air delivery; reduction in the component temperatures decreases the thermal stresses; the ZrO2. MgO shows improved corrosion resistance in combustion gases compared to ZrO2.Y2O3 and ZrO2. CaO; the limitations of the coatings have to be defined in more detail; and the adherence of thicker coatings has to be improved. Optimization of the spraying process with respect to particle fusion is necessary. Also, Mo and Ch carbide coatings were found to increase the service life of piston rings. (LCL).
Author :
Publisher :
ISBN 13 :
Total Pages : 195 pages
Book Rating : 4.:/5 (16 download)
Download or read book Development of Wear-resistant Ceramic Coatings for Diesel Engine Components. Volume 1, Coating Development and Tribological Testing written by and published by . This book was released on 1992 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tribological properties of a variety of advanced coating materials have been evaluated under conditions which simulate the piston ring -- cylinder liner environment near top ring reversal in a heavy duty diesel engine. Coated r̀̀ing ̀̀samples were tested against a conventional pearlitic grey cast iron liner material using a high temperature reciprocating wear test rig. Tests were run with a fresh CE/SF 15W40lubricant at 200 and 350°C, with a high-soot, engine-tested oil at 200°C and with no lubrication at 200°C. For lowest wear under boundary lubricated conditions, the most promising candidates to emerge from this study were high velocity oxy-fuel (HVOF) Cr3 C2 - 20% NiCr and WC - 12% Co cermets, low temperature arc vapor deposited (LTAVD) CrN and plasma sprayed chromium oxides. Also, plasma sprayed Cr2O3 and A12O3-ZrO2 materials were found to give excellent wear resistance in unlubricated tests and at extremely high temperatures (450°C) with a syntheticoil. All of these materials would offer substantial wear reductions compared to the conventional electroplated hard chromium ring facing and thermally sprayed metallic coatings, especially at high temperatures and with high-soot oils subjected to degradation in diesel environments. The LTAVD CrN coating provided the lowest lubricated wear rates of all the materials evaluated, but may be too thin (4?m) for use as a top ring facing. Most of the coatings evaluated showed higher wear rates with high-soot, engine-tested oil than with fresh oil, with increases of more than a factor of ten in some cases. Generally, metallic materials were found to be much more sensitive to soot/oil degradation than ceramic and cermet coatings. Thus, decreased s̀̀oot sensitivity ̀̀is a significant driving force for utilizing ceramic or cermet coatings in diesel engine wear applications.
Author :
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (317 download)
Download or read book Assessment of Fundamental Materials Needs for Thick Thermal Barrier Coatings (TTBC's) for Truck Diesel Engines written by and published by . This book was released on 1990 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 754 pages
Book Rating : 4.3/5 (129 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 111 pages
Book Rating : 4.:/5 (727 download)
Download or read book Development of Wear Resistant Ceramic Coatings for Diesel Engine Components. Final Report written by and published by . This book was released on 1992 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improved fuel economy and a reduction of emissions can be achieved by insulation of the combustion chamber components to reduce heat rejection. However, insulating the combustion chamber components will also increase the operating temperature of the piston ring/cylinder liner interface from approximately 150°C to over 300°C. Existing ring/liner materials can not withstand these higher operating temperatures and for this reason, new materials need to be developed for this critical tribological interface. The overall goal of this program is the development of piston ring/cylinder liner material pairs which would be able to provide the required friction and wear properties at these more severe operating conditions. More specifically, this program first selected, and then evaluated, potential d/wear resistant coatings which could be applied to either piston rings an or cylinder liners and provide, at 350°C under lubricated conditions, coefficients of friction below 0.1 and wear rates of less than 25 x lO−6 mm/hour. The processes selected for applying the candidate wear resistant coatings to piston rings and/or cylinder liners were plasma spraying, chemical vapor, physical vapor and low temperature arc vapor deposition techniques as well as enameling techniques.
Download or read book Thermal Barrier Coatings for Low Emission, High Efficiency Diesel Engine Applications written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal efficiencies of 54% have been demonstrated by single cylinder engine testing of advanced diesel engine concepts developed under Department of Energy funding. In order for these concept engines to be commercially viable, cost effective and durable systems for insulating the piston, head, ports and exhaust manifolds will be required. The application and development of new materials such as thick thermal barrier coating systems will be key to insulating these components. Development of test methods to rapidly evaluate the durability of coating systems without expensive engine testing is a major objective of current work. In addition, a novel, low cost method for producing thermal barrier coated pistons without final machining of the coating has been developed.
Author :
Publisher : DIANE Publishing
ISBN 13 : 1422345610
Total Pages : 221 pages
Book Rating : 4.4/5 (223 download)
Download or read book Energy Materials Coordinating Committe (EMaCC): Fiscal Year 2002 Annual Technical Report written by and published by DIANE Publishing. This book was released on with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 376 pages
Book Rating : 4.:/5 (3 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 376 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.
Author :
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.3/5 (91 download)
Download or read book Annual Report to Congress on the Automotive Technology Development Program. Ninth written by and published by . This book was released on 1987 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.3/5 (91 download)
Download or read book Annual Report to Congress on the Automotive Technology Development Program. Tenth written by and published by . This book was released on 1988 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Society of Automotive Engineers
Publisher : SAE International
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.3/5 (91 download)
Download or read book Development of New Diesel Engines and Components Design written by Society of Automotive Engineers and published by SAE International. This book was released on 1997 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
