Spark Ignition Effects on Two-stroke Cyclic Variability

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Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Spark Ignition Effects on Two-stroke Cyclic Variability by : Stephen A. Ciatti

Download or read book Spark Ignition Effects on Two-stroke Cyclic Variability written by Stephen A. Ciatti and published by . This book was released on 1997 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cycle-By-Cycle Variation in Spark Ignition Internal Combustion Engines

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Publisher :
ISBN 13 :
Total Pages : 253 pages
Book Rating : 4.:/5 (946 download)

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Book Synopsis Cycle-By-Cycle Variation in Spark Ignition Internal Combustion Engines by :

Download or read book Cycle-By-Cycle Variation in Spark Ignition Internal Combustion Engines written by and published by . This book was released on 1999 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this work was to extend the engine cycle simulation used by the Oxford Internal Combustion Engine Group to enable it to perform cycle-by-cycle modelling. A literature review concluded that the most appropriate metric for quantifying the cyclic variation was the coefficient of variation of the indicated mean effective pressure, and that for zero dimensional computer simulations, the most sensible parameter to perturb for cycle-by-cycle modelling was the burn rate. Modelling attempts using burn rate information alone resulted in an under-prediction of the cyclic variability exhibited by the engine. The work then examined a two-zone polytropic process model in an attempt to improve burn rate estimation. The model proved unreliable for burn rate calculations. The Rassweiler and Withrow method was then modified to include both the compression and expansion indices throughout the combustion period. The technique proved viable, but was not used because the slow burn up of the significant crevice mass in the experimental engine made calculation of an accurate expansion index doubtful. A further cause of the under-prediction in cyclic variability was postulated to be incomplete combustion, which is not detected by the burn rate model. A completeness of combustion parameter was derived from information contained in the Rassweiler and Withrow analysis. This parameter was used along with burn rate variations to perturb the cycle simulation and resulted in good cycle-by-cycle agreement between the experimental data and the modelled data in terms of mean effective pressure, maximum pressure, and the phasing of maximum pressure. Cyclic measurements of NO showed that the technique did not predict the cyclic variability in NO formation, and this was attributed to the sensitivity of NO formation to parameters that were not allowed to vary on a cyclic basis within the model (such as residuals).

Ignition System Characteristics, Conditional Ignition, and Exhaust Port Timing Effects on Combustion for a Two-stroke Engine

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Publisher :
ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Ignition System Characteristics, Conditional Ignition, and Exhaust Port Timing Effects on Combustion for a Two-stroke Engine by : David Grupp

Download or read book Ignition System Characteristics, Conditional Ignition, and Exhaust Port Timing Effects on Combustion for a Two-stroke Engine written by David Grupp and published by . This book was released on 1999 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Two-Stroke Cycle Engine

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Publisher : Routledge
ISBN 13 : 1351406450
Total Pages : 425 pages
Book Rating : 4.3/5 (514 download)

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Book Synopsis Two-Stroke Cycle Engine by : JohnB. Heywood

Download or read book Two-Stroke Cycle Engine written by JohnB. Heywood and published by Routledge. This book was released on 2017-11-01 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the two-stroke cycle internal combustion engine, used in compact, lightweight form in everything from motorcycles to chainsaws to outboard motors, and in large sizes for marine propulsion and power generation. It first provides an overview of the principles, characteristics, applications, and history of the two-stroke cycle engine, followed by descriptions and evaluations of various types of models that have been developed to predict aspects of two-stroke engine operation.

The Effects of Cycle-to-cycle Variations on Nitric Oxide (NO) Emissions for a Spark-ignition Engine

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (74 download)

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Book Synopsis The Effects of Cycle-to-cycle Variations on Nitric Oxide (NO) Emissions for a Spark-ignition Engine by : Milivoy Villarroel

Download or read book The Effects of Cycle-to-cycle Variations on Nitric Oxide (NO) Emissions for a Spark-ignition Engine written by Milivoy Villarroel and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this study were to 1) determine the effects of cycle-to-cycle variations (ccv) on nitric oxide (NO) emissions, and 2) determine if the consideration of ccv affects the average NO emission as compared to the mean cycle NO emission. To carry out the proposed study, an engine simulation model was used. The simulation determines engine performance and NO emissions as functions of engine operating conditions, engine design parameters, and combustion parameters. An automotive, spark-ignition engine at part load and 1400 rpm was examined in this study. The engine cycle simulation employed three zones for the combustion process: (1) unburned gas, (2) adiabatic core region, and (3) boundary-layer gas. The use of the adiabatic core region has been shown to be especially necessary to capture the production of nitric oxides which are highly temperature dependent. Past research has shown that cyclic variations in combustion cause ccv of burn duration, ignition delay and equivalence ratio. Furthermore, literature has shown that variations of these three input parameters may be approximated by a normal frequency distribution. Using the mean and standard deviation, and a random number generator, input values were tabulated for the ignition delay, burn duration and equivalence ratio. These three input parameters were then used to simulate cyclic variations in the combustion process. Calculated results show that cyclic variations of the input parameters cause the cycle-by-cycle NO emissions to increase and decrease by as much as 59% from the mean cycle NO of 3,247 ppm. The average NO emission resulting from ccv was 4.9% less than the mean cycle NO emission. This result indicates that cyclic variations must be considered when calculating the overall NO emissions.

Effect of Turbulence on Flame Initiation and Combustion Cyclic Variation in Spark Ignition Engines

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Publisher :
ISBN 13 :
Total Pages : 242 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Effect of Turbulence on Flame Initiation and Combustion Cyclic Variation in Spark Ignition Engines by : Mazen Hammoud

Download or read book Effect of Turbulence on Flame Initiation and Combustion Cyclic Variation in Spark Ignition Engines written by Mazen Hammoud and published by . This book was released on 1996 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

La France restablie, ov les pressantes exortations à ses peuples, pour les obliger à l'vnion, à la concorde, & à la res-joüissance, en faveur de la paix & des lys florissans

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Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (681 download)

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Book Synopsis La France restablie, ov les pressantes exortations à ses peuples, pour les obliger à l'vnion, à la concorde, & à la res-joüissance, en faveur de la paix & des lys florissans by :

Download or read book La France restablie, ov les pressantes exortations à ses peuples, pour les obliger à l'vnion, à la concorde, & à la res-joüissance, en faveur de la paix & des lys florissans written by and published by . This book was released on 1649 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Assessment of Fuel Economy Technologies for Light-Duty Vehicles

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Publisher : National Academies Press
ISBN 13 : 0309216389
Total Pages : 373 pages
Book Rating : 4.3/5 (92 download)

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Book Synopsis Assessment of Fuel Economy Technologies for Light-Duty Vehicles by : National Research Council

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.

FLUID MOTION: EFFECT ON CYCLE-TO-CYCLE COMBUSTION VARIATION, FLAME DEVELOPMENT, AND SPARK DELIVERY IN SPARK-IGNITION ENGINES.

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Publisher :
ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis FLUID MOTION: EFFECT ON CYCLE-TO-CYCLE COMBUSTION VARIATION, FLAME DEVELOPMENT, AND SPARK DELIVERY IN SPARK-IGNITION ENGINES. by : PHILIP SHAFER KELLER

Download or read book FLUID MOTION: EFFECT ON CYCLE-TO-CYCLE COMBUSTION VARIATION, FLAME DEVELOPMENT, AND SPARK DELIVERY IN SPARK-IGNITION ENGINES. written by PHILIP SHAFER KELLER and published by . This book was released on 1991 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: in the determination of the cycle-resolved mean velocity, the greater the correlation.

Cycle by Cycle Combustion Variability in Spark Ignition Engine Emissions

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Publisher :
ISBN 13 :
Total Pages : 494 pages
Book Rating : 4.:/5 (223 download)

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Book Synopsis Cycle by Cycle Combustion Variability in Spark Ignition Engine Emissions by : Laurence Goldsworthy

Download or read book Cycle by Cycle Combustion Variability in Spark Ignition Engine Emissions written by Laurence Goldsworthy and published by . This book was released on 1978 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Cycle to Cycle Variation of Maximum Combustion Pressure in a Two-stroke Cycle Engine

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Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis The Cycle to Cycle Variation of Maximum Combustion Pressure in a Two-stroke Cycle Engine by : Harry Eugene Cotrill

Download or read book The Cycle to Cycle Variation of Maximum Combustion Pressure in a Two-stroke Cycle Engine written by Harry Eugene Cotrill and published by . This book was released on 1952 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cycle-by-cycle Variation in Spark Ignition Internal Combustion Engines

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Publisher :
ISBN 13 :
Total Pages : 478 pages
Book Rating : 4.:/5 (431 download)

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Book Synopsis Cycle-by-cycle Variation in Spark Ignition Internal Combustion Engines by : Dr. Jeffrey K. Ball

Download or read book Cycle-by-cycle Variation in Spark Ignition Internal Combustion Engines written by Dr. Jeffrey K. Ball and published by . This book was released on 1998 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this work was to extend the engine cycle simulation used by the Oxford Internal Combustion Engine Group to enable it to perform cycle-by-cycle modelling. A literature review concluded that the most appropriate metric for quantifying the cyclic variation was the coefficient of variation of the indicated mean effective pressure, and that for zero dimensional computer simulations, the most sensible parameter to perturb for cycle-by-cycle modelling was the burn rate. Modelling attempts using burn rate information alone resulted in an under-prediction of the cyclic variability exhibited by the engine. The work then examined a two-zone polytropic process model in an attempt to improve burn rate estimation. The model proved unreliable for burn rate calculations. The Rassweiler and Withrow method was then modified to include both the compression and expansion indices throughout the combustion period. The technique proved viable, but was not used because the slow burn up of the significant crevice mass in the experimental engine made calculation of an accurate expansion index doubtful. A further cause of the under-prediction in cyclic variability was postulated to be incomplete combustion, which is not detected by the burn rate model. A completeness of combustion parameter was derived from information contained in the Rassweiler and Withrow analysis. This parameter was used along with burn rate variations to perturb the cycle simulation and resulted in good cycle-by-cycle agreement between the experimental data and the modelled data in terms of mean effective pressure, maximum pressure, and the phasing of maximum pressure. Cyclic measurements of NO showed that the technique did not predict the cyclic variability in NO formation, and this was attributed to the sensitivity of NO formation to parameters that were not allowed to vary on a cyclic basis within the model (such as residuals).

Introduction to Internal Combustion Engines

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Publisher : Bloomsbury Publishing
ISBN 13 : 1137028297
Total Pages : 516 pages
Book Rating : 4.1/5 (37 download)

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Book Synopsis Introduction to Internal Combustion Engines by : Richard Stone

Download or read book Introduction to Internal Combustion Engines written by Richard Stone and published by Bloomsbury Publishing. This book was released on 2017-09-16 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its fourth edition, this textbook remains the indispensable text to guide readers through automotive or mechanical engineering, both at university and beyond. Thoroughly updated, clear, comprehensive and well-illustrated, with a wealth of worked examples and problems, its combination of theory and applied practice aids in the understanding of internal combustion engines, from thermodynamics and combustion to fluid mechanics and materials science. This textbook is aimed at third year undergraduate or postgraduate students on mechanical or automotive engineering degrees. New to this Edition: - Fully updated for changes in technology in this fast-moving area - New material on direct injection spark engines, supercharging and renewable fuels - Solutions manual online for lecturers

Cycle-by-cycle Combustion Variability in Spark Ignition Engines

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Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (22 download)

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Book Synopsis Cycle-by-cycle Combustion Variability in Spark Ignition Engines by : Eric Edward Milkins

Download or read book Cycle-by-cycle Combustion Variability in Spark Ignition Engines written by Eric Edward Milkins and published by . This book was released on 1975 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Parametric Studies Using a Mathematical Model of a Two-stroke Cycle Spark Ignition Engine

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Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (891 download)

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Book Synopsis Parametric Studies Using a Mathematical Model of a Two-stroke Cycle Spark Ignition Engine by : Vijay Vishwanath Sathe

Download or read book Parametric Studies Using a Mathematical Model of a Two-stroke Cycle Spark Ignition Engine written by Vijay Vishwanath Sathe and published by . This book was released on 1969 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Burn Modes and Prior-cycle Effects on Cyclic Variations in Lean-burn Spark-ignition Engine Combustion

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Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (468 download)

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Book Synopsis Burn Modes and Prior-cycle Effects on Cyclic Variations in Lean-burn Spark-ignition Engine Combustion by : Jay K. Martin

Download or read book Burn Modes and Prior-cycle Effects on Cyclic Variations in Lean-burn Spark-ignition Engine Combustion written by Jay K. Martin and published by . This book was released on 1988 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cyclic Variations in a Small Two-stroke Cycle Spark Ignited Engine

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Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (363 download)

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Book Synopsis Cyclic Variations in a Small Two-stroke Cycle Spark Ignited Engine by : Mathew Abraham

Download or read book Cyclic Variations in a Small Two-stroke Cycle Spark Ignited Engine written by Mathew Abraham and published by . This book was released on 1992 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: