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Book Heat Transfer and Combustion chamber Deposits in a Spark Ignition Engine

Download or read book Heat Transfer and Combustion chamber Deposits in a Spark Ignition Engine written by James E. Bennethum and published by . This book was released on 1959 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Characterization of Combustion and Heat Transfer in a Direct Injection Spark Ignition Engine Through Measurements of Instantaneous Combustion Chamber Surface Temperature

Download or read book Characterization of Combustion and Heat Transfer in a Direct Injection Spark Ignition Engine Through Measurements of Instantaneous Combustion Chamber Surface Temperature written by Kuk-Won Cho and published by . This book was released on 2003 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Advances in Automobile Engineering

Download or read book Advances in Automobile Engineering written by Advanced School of Automobile Engineering (Cranfield). Symposium and published by . This book was released on 1966 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Deposit Effects on Combustion Chamber Surface Temperatures in a Two cycle Engine

Download or read book Deposit Effects on Combustion Chamber Surface Temperatures in a Two cycle Engine written by William Magnus Norgren and published by . This book was released on 1960 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Characterization of Knocking Combustion and Heat Transfer in Spark Ignition Engine

Download or read book Characterization of Knocking Combustion and Heat Transfer in Spark Ignition Engine written by Michalis Syrimis and published by . This book was released on 1996 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study was conducted to investigate combustion and in-cylinder heat transfer characteristics under light and heavy knocking conditions in a spark ignition engine. A special, single cylinder, Mitsubishi R52 engine was used, in its extended piston configuration. Fast response heat flux probes on the piston and the cylinder head provided instantaneous surface temperature measurements at different locations, both inside and outside the end-gas region. The knocking combustion process was characterized by several knock indices, based on the net heat release analysis of cylinder pressure, as well as, the amplitude of the knock induced pressure fluctuations. Knock initiation and development were investigated by sampling cylinder pressure data at two different locations in the chamber. The cyclic variability associated with knocking combustion was investigated by studying the variation, as well as the interdependence of the knock indices, under different knock severity conditions. Finally, the effects of knock on heat transfer were explored by studying changes in ensemble-average heat flux with increasing knock intensity, and also by the magnitude of the correlation coefficients between peak heat flux and the developed knock indices. Evidence of multiple autoignition sites was found during the knock initiation process. Knock induced pressure waves were of acoustic nature, becoming weak shock waves in cases of violent autoignitions. Cyclic variability in knock intensity was found to be driven by variations in burn rate. The correlation between burn rate and knock intensity was higher for lower overall combustion rates. Under light knock, the ensemble-average peak heat flux at locations near the end-gas zone increased with spark advance, departing from its trend prior to the onset of knock. Under heavy knock, the ensemble-average peak heat flux increased over the entire piston crown. High statistical correlation (up to 0.80) was found between peak heat flux and certain of the autoignition indices within and near the end-gas zone. Knock was found to increase heat transfer by the 'scouring' action of the induced pressure waves on the wall thermal boundary layer. Apart from knock intensity, the location of autoignition initiation, and the characteristics of the flame and wave front patterns following autoignition were found to affect the magnitude of heat transfer changes.

Book Instantaneous in cylinder heat transfer and combustion analysis in spark ignition engines

Download or read book Instantaneous in cylinder heat transfer and combustion analysis in spark ignition engines written by Xiaowei Wang (D.Phil.) and published by . This book was released on 2008 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Thermal Properties of Combustion Chamber Deposits and Their Effect on Engine Heat Transfer and Octane Requirement Increase

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.

Book Measurement and Analysis of Spark Ignition Engine Pressure Data to Determine Heat Release Profiles

Download or read book Measurement and Analysis of Spark Ignition Engine Pressure Data to Determine Heat Release Profiles written by Fred Eldon Nelson and published by . This book was released on 1984 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat release analysis can be computed from the measured cylinder pressure at known cylinder volumes through the use of the First Law Thermodynamics and the ideal gas law. After correcting for crevice effects and heat transfer to the combustion chamber walls, the combustion heat release profile can be determined. From the combustion heat release profile, the burn rate and the mass fraction burned can be calculated for studies of knock and turbulence. The Ricardo Hydra MK III engine is instrumented, the operating properties are checked and the cylinder pressure is measured for fired and motored operating conditions at six different load and speed setpoints. The generated pressure data is then used in the Sloan Automotive Lab heat release model to determine the validity of the model for real engine data. The model is checked for scaling by load and speed. The heat release was successfully modeled using one set of model parameters for this engine operating at the different loads and speeds. (Author).

Book Combustion Chamber Deposit Effects on Hydrocarbon Emissions from a Spark ignition Engine

Download or read book Combustion Chamber Deposit Effects on Hydrocarbon Emissions from a Spark ignition Engine written by Haissam Ali Haidar and published by . This book was released on 1997 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Effects of Heat Transfer and Mixing on Diesel Ignition and Combustion

Download or read book The Effects of Heat Transfer and Mixing on Diesel Ignition and Combustion written by Laura M. Ricart and published by . This book was released on 1995 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Assessment of Fuel Economy Technologies for Light Duty Vehicles

Download or read book Assessment of Fuel Economy Technologies for Light Duty Vehicles written by National Research Council and published by National Academies Press. This book was released on 2011-06-03 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various combinations of commercially available technologies could greatly reduce fuel consumption in passenger cars, sport-utility vehicles, minivans, and other light-duty vehicles without compromising vehicle performance or safety. Assessment of Technologies for Improving Light Duty Vehicle Fuel Economy estimates the potential fuel savings and costs to consumers of available technology combinations for three types of engines: spark-ignition gasoline, compression-ignition diesel, and hybrid. According to its estimates, adopting the full combination of improved technologies in medium and large cars and pickup trucks with spark-ignition engines could reduce fuel consumption by 29 percent at an additional cost of $2,200 to the consumer. Replacing spark-ignition engines with diesel engines and components would yield fuel savings of about 37 percent at an added cost of approximately $5,900 per vehicle, and replacing spark-ignition engines with hybrid engines and components would reduce fuel consumption by 43 percent at an increase of $6,000 per vehicle. The book focuses on fuel consumption-the amount of fuel consumed in a given driving distance-because energy savings are directly related to the amount of fuel used. In contrast, fuel economy measures how far a vehicle will travel with a gallon of fuel. Because fuel consumption data indicate money saved on fuel purchases and reductions in carbon dioxide emissions, the book finds that vehicle stickers should provide consumers with fuel consumption data in addition to fuel economy information.

Book Low temperature Combustion and Autoignition

Download or read book Low temperature Combustion and Autoignition written by M.J. Pilling and published by Elsevier. This book was released on 1997-11-27 with total page 823 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion has played a central role in the development of our civilization which it maintains today as its predominant source of energy. The aim of this book is to provide an understanding of both fundamental and applied aspects of low-temperature combustion chemistry and autoignition. The topic is rooted in classical observational science and has grown, through an increasing understanding of the linkage of the phenomenology to coupled chemical reactions, to quite profound advances in the chemical kinetics of both complex and elementary reactions. The driving force has been both the intrinsic interest of an old and intriguing phenomenon and the centrality of its applications to our economic prosperity. The volume provides a coherent view of the subject while, at the same time, each chapter is self-contained.