Download or read book Thermal Properties of Combustion Chamber Deposits and Their Effect on Engine Heat Transfer and Octane Requirement Increase written by Timothy Keith Hayes and published by . This book was released on 1991 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of the thermal properties of combustion chamber deposits and their effect on engine heat transfer and Octane Requirement Increase (ORI) has been completed. Deposits were grown in a Chrysler 4-cylinder 2.2 liter engine with total test times of 50- and 250-hours. Two fuels were used, both having the same unleaded premium fuel base, but one was doped with reformer bottoms which promoted deposit growth and octane requirement increase. Thicknesses were measured using a machinist's microscope and the thermal diffusivity and conductivity were measured with high speed thermocouples and steady and flash laser techniques. The results indicate that the fuel with reformer bottoms produces deposits which are 15-25 percent thicker in the end gas region. The 250-hour test indicated that the deposits grow quickest in the end gas region, but stabilize there sooner, with the central region growing slower. The thermal diffusivity of the deposits grown with reformer bottoms was 1/2 to 1/3 that of the clean fuel. For the clean fuel, the thermal diffusivity ranged from 3.5 to 3.9 e-7 m$sp2$/s, and for the fuel doped with reformer bottoms, the diffusivity ranged from 1 to 1.9 e-7 m$sp2$/s. These deposit diffusivity values fall within the reported range in the literature of 0.39 to 27.2 e-7 m$sp2$/s. For the doped fuel, the conductivity values ranged from 0.15 to 0.6 W/mK, while the clean fuel ranged from 0.3 to 1 W/mK. Reported values of thermal conductivity for unleaded fuel deposits in the literature ranged from 0.04 to 0.7 W/mK. Engine simulation calculations indicated that the clean fuel produces lower Octane Requirement Increase (ORI) and unburned temperatures. The simulation results also indicated that larger values of deposit conductivity and deposit diffusivity should be the aim of fuel additives in order to reduce ORI.
Download or read book Fuel Engine Interactions written by Gautam Kalghatgi and published by SAE International. This book was released on 2013-10-08 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional fossil fuels will constitute the majority of automotive fuels for the foreseeable future but will have to adapt to changes in engine technology. Unconventional transport fuels such as biofuels, gas-to-liquid fuels, compressed natural gas, and liquid petroleum gas will also play a role. Hydrogen might be a viable transport fuel if it overcomes barriers in production, transport, storage, and safety and/or if fuel cells become viable. This book opens by considering these issues and then introduces practical transport fuels. A chapter on engine deposits follows, which is an important practical topic about how fuels affect engines that is not usually considered in other books. The next three chapters discuss auto-ignition phenomena in engines. The auto-ignition resistance of fuels is the most important fuel property since it limits the efficiency of spark ignition engines and determines the performance of compression ignition engines. Moreover, the manufacture of fuels is primarily driven by the need to meet auto-ignition quality demands set by fuel specifications. The final chapter considers the implications for future fuels. The book covers the many important ways that fuels and engines interact and why and how fuels will need to change to meet the requirements of future engines, as well as the implications for fuels manufacture and specifications.
Download or read book Previews of Heat and Mass Transfer written by and published by . This book was released on 1993 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Second International Conference on New Developments in Powertrain and Chassis Engineering at the Palais Des Congr s Strasbourg 14 16 June 1989 written by and published by . This book was released on 1989 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book S A E Transactions written by Society of Automotive Engineers and published by . This book was released on 1951 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemistry of Engine Combustion Deposits written by Lawrence B. Ebert and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: On March 30, 1981, a symposium entitled "Chemistry of Engine Combustion Deposits" was held at the 181st American Chemical Society National Meeting in Atlanta, Georgia, under the sponsorship of the Petroleum Division. This book is an out growth of that symposium, including papers from all of the At 1 anta presentors, as we 11 as from others who were i nvi ted to contribute. Research on engine deposits has not been as "glamorous" as in the rel ated fossil fuel areas of petrol eum, coal, or oil shale, and publications in the field have been largely confined to combustion and automotive engineering journals. One objec tive of this book is to bring a large body of work on the chemistry of deposits into more general accessibility. We hope to make people more familiar with what deposits are, with what problems they cause, and with what present workers are doing to solve these problems. The creation of the book has involved many people. Patricia M. Vann of Plenum Publishing Corporation gave guidance in planning. We thank Claire Bromley, Ellen Gabriel, and Halina Markowski for the preparation of many of the Exxon contribu tions. Finally, we thank Joseph C. Scanlon for his useful advice and encouragement.
Download or read book ASME Technical Papers written by and published by . This book was released on 1989 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Summary of Engineering Research written by University of Illinois at Urbana-Champaign. Office of Engineering Publications and published by . This book was released on 1992 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paper written by and published by . This book was released on 1989 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Journal of Vehicle Design written by and published by . This book was released on 1992 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Society of Automotive Engineers preprints written by and published by . This book was released on 1954 with total page 1012 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book SAE Quarterly Transactions written by Society of Automotive Engineers and published by . This book was released on 1951 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The SAE Journal written by and published by . This book was released on 1951-07 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gasoline Effects on Octane Requirement Increase and Combustion Chamber Deposits written by Martin K. Megnin and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Literature Abstracts written by Society of Automotive Engineers and published by . This book was released on 2000 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat and Mass Transfer in Gasoline and Diesel Engines written by Dudley Brian Spalding and published by Core/Mechanical. This book was released on 1989 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt: The editors explain that the classical formulae and techniques for predicting heat flow do not apply to the unique conditions found in reciprocating engines. They warn the reader--presumed to be aspiring designers of more efficient and less polluting engines--that although these papers, from every country where engineering is practiced, contain nearly all the available knowledge on the subject, no definitive answers emerge, no breakthroughs loom around the next equation. The topics include the transfer of engine heat and of external heat, numerical flow simulation, applications and devices, ignition and quenching, and measurement techniques. Annotation copyrighted by Book News, Inc., Portland, OR
Download or read book Annual Index abstracts of SAE Technical Papers written by and published by . This book was released on 1995 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
