Knocking Combustion Observed In A Spark Ignition Engine With Simultaneous Direct And Schilieren High Speed Motion Pictures And Pressure Recorders
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Knocking Combustion Observed In A Spark Ignition Engine With Simultaneous Direct And Schlieren High Speed Motion Pictures And Pressure Records
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Author : Gordon E. Osterstrom
language : en
Publisher:
Release Date : 1948
Knocking Combustion Observed In A Spark Ignition Engine With Simultaneous Direct And Schlieren High Speed Motion Pictures And Pressure Records written by Gordon E. Osterstrom and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1948 with Combustion categories.
This report support simultaneous direct and schlieren photographs at 40,000 frames a second and correlated pressure records taken of knocking combustion in a special spark-ignition engine to ascertain intensity of certain end-zone reactions previously seen by schlieren photography alone.
Knocking Combustion Observed In A Spark Ignition Engine With Simultaneous Direct And Schilieren High Speed Motion Pictures And Pressure Recorders
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Author : Benjamin Pinkel
language : en
Publisher:
Release Date : 1947
Knocking Combustion Observed In A Spark Ignition Engine With Simultaneous Direct And Schilieren High Speed Motion Pictures And Pressure Recorders written by Benjamin Pinkel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1947 with Aerofoils categories.
Applied Mechanics Reviews
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Author :
language : en
Publisher:
Release Date : 1950
Applied Mechanics Reviews written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1950 with Mechanics, Applied categories.
Analysis Of Spark Ignition Engine Knock As Seen In Photographs Taken At 200 000 Frames A Second
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Author : Cearcy D. Miller
language : en
Publisher:
Release Date : 1946
Analysis Of Spark Ignition Engine Knock As Seen In Photographs Taken At 200 000 Frames A Second written by Cearcy D. Miller and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1946 with Combustion categories.
A motion-picture of the development of knock in a spark-ignition engine is presented, which consists of 20 photographs taken at intervals of 5 microseconds, or at a rate of 200,000 photographs a second, with an equivalent wide-open exposure time of 6.4 microseconds for each photograph. A motion picture of a complete combustion process, including the development of knock, taken at the rate of 40,000 photographs a second is also presented to assist the reader in orienting the photographs of the knock development taken at 200,000 frames per second are analyzed and the conclusion is made that the type of knock in the spark-ignition engine involving violent gas vibration originates as a self-propagating disturbance starting at a point in the burning or autoigniting gases and spreading out from that point through the incompletely burned gases at a rate as high as 6800 feet per second, or about twice the speed of sound in the burned gases. Apparent formation of free carbon particles in both the burning and the burned gas is observed within 10 microseconds after passage of the knock disturbance through the gases.
Relation Between Spark Ignition Engine Knock Detonation Waves And Autoignition As Shown By High Speed Photography
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Author : Cearcy D. Miller
language : en
Publisher:
Release Date : 1946
Relation Between Spark Ignition Engine Knock Detonation Waves And Autoignition As Shown By High Speed Photography written by Cearcy D. Miller and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1946 with Combustion categories.
A critical review of literature bearing on the autoignition and detonation-wave theories of spark-ignition engine knock and on the nature of gas vibrations associated with combustion and knock results in the conclusion that neither the autoignition theory nor the detonation-wave theory is an adequate explanation of spark-ignition engine knock. A knock theory is proposed, combining the autoignition and detonation-wave theories, introducing the idea that the detonation wave develops in autoignited or afterburning gases, and ascribing comparatively low-pitched heavy knocks to autoignition but high-pitched pinging knocks to detonation waves with the possibility of combinations of the two types of knock.
Aerospace Engineering Index
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Author :
language : en
Publisher:
Release Date : 1951
Aerospace Engineering Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1951 with categories.
Index To Theses With Abstracts Accepted For Higher Degrees By The Universities Of Great Britain And Ireland And The Council For National Academic Awards
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Author :
language : en
Publisher:
Release Date : 2000
Index To Theses With Abstracts Accepted For Higher Degrees By The Universities Of Great Britain And Ireland And The Council For National Academic Awards written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Dissertations, Academic categories.
Theses on any subject submitted by the academic libraries in the UK and Ireland.
Knocking In Gasoline Engines
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Author : Michael Günther
language : en
Publisher: Springer
Release Date : 2017-11-21
Knocking In Gasoline Engines written by Michael Günther and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-21 with Technology & Engineering categories.
The book includes the papers presented at the conference discussing approaches to prevent or reliably control knocking and other irregular combustion events. The majority of today’s highly efficient gasoline engines utilize downsizing. High mean pressures produce increased knocking, which frequently results in a reduction in the compression ratio at high specific powers. Beyond this, the phenomenon of pre-ignition has been linked to the rise in specific power in gasoline engines for many years. Charge-diluted concepts with high compression cause extreme knocking, potentially leading to catastrophic failure. The introduction of RDE legislation this year will further grow the requirements for combustion process development, as residual gas scavenging and enrichment to improve the knock limit will be legally restricted despite no relaxation of the need to reach the main center of heat release as early as possible. New solutions in thermodynamics and control engineering are urgently needed to further increase the efficiency of gasoline engines.
End Zone Water Injection As A Means Of Suppressing Knock In A Spark Ignition Engine
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Author : Rinaldo J. Brun
language : en
Publisher:
Release Date : 1944
End Zone Water Injection As A Means Of Suppressing Knock In A Spark Ignition Engine written by Rinaldo J. Brun and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1944 with Aerodynamics categories.
Summary: An investigation has been made of the effectiveness of water injection into the combustion end zone of a spark-ignition engine cylinder for the suppression of knock. Pressure-time recoreds obtained show that injection of water at 60° B.T.C. on the compression stroke at a water-fuel ratio of 0.3 rendered M-3 fuel as good as S-3 fuel from an antiknock consideration. The optimum crank angle for injection of water into the end zone was found to be critical. As the injection angle was increased beyond the optimum, the quantity of water required to suppress knock increased to 3.6 water-fuel ratio at 132° B.T.C. The water quantity could not be increased beyond 3.6 water-fuel ration because of injection-pump limitations; however, a further increase in the injection angle up to the earliest angle obtainable, which was 20° A.T.C. on the intake stroke, continuously increased the knock intensity. The engine operating conditions of the tests did not simulate those encountered in flight, especially with regard to the operating speed of 570 rpm. For this reason the results should only be regarded as of theoretical importance until further investigation has been made.
Calculations Of The Performance Of A Compression Ignition Engine Compressor Turbine Combination
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Author : J. C. Sanders
language : en
Publisher:
Release Date : 1945
Calculations Of The Performance Of A Compression Ignition Engine Compressor Turbine Combination written by J. C. Sanders and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1945 with Airplanes categories.
Small high-speed single-cylinder compression-ignition engines were tested to determine their performance characteristics under high supercharging. Calculations were made on the energy available in the exhaust gas of the compression-ignition engines. The maximum power at any given maximum cylinder pressure was obtained when the compression pressure was equal to the maximum cylinder pressure. Constant-pressure combustion was found possible at an engine speed of 2200 rpm. Exhaust pressures and temperatures were determined from an analysis of indicator cards. The analysis showed that, at rich mixtures with the exhaust back pressure equal to the inlet-air pressure, there is excess energy available for driving a turbine over that required for supercharging. The presence of this excess energy indicates that a highly supercharged compression-ignition engine might be desirable as a compressor and combustion chamber for a turbine.