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Kocking At Gasoline Engines
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Book Synopsis Knocking in Gasoline Engines by : Michael Günther
Download or read book Knocking in Gasoline Engines written by Michael Günther and published by Springer. This book was released on 2017-11-21 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis International Conference on Ignition Systems for Gasoline Engines – International Conference on Knocking in Gasoline Engines by : Marc Sens
Download or read book International Conference on Ignition Systems for Gasoline Engines – International Conference on Knocking in Gasoline Engines written by Marc Sens and published by expert verlag GmbH. This book was released on 2022-10-17 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: For decades, scientists and engineers have been working to increase the efficiency of internal combustion engines. For spark-ignition engines, two technical questions in particular are always in focus: 1. How can the air/fuel mixture be optimally ignited under all possible conditions? 2. How can undesirable but recurrent early and self-ignitions in the air/fuel mixture be avoided? Against the background of the considerable efficiency increases currently being sought in the context of developments and the introduction of new fuels, such as hydrogen, methanol, ammonia and other hydrogen derivatives as well as biofuels, these questions are more in the focus than ever. In order to provide a perfect exchange platform for the community of combustion process and system developers from research and development, IAV has organized this combined conference, chaired by Marc Sens. The proceedings presented here represent the collection of all the topics presented at the event and are thus intended to serve as an inspiration and pool of ideas for all interested parties.
Book Synopsis Kocking at gasoline engines by : Matthias Kratzsch
Download or read book Kocking at gasoline engines written by Matthias Kratzsch and published by . This book was released on 2010 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling of End-Gas Autoignition for Knock Prediction in Gasoline Engines by : Andreas Manz
Download or read book Modeling of End-Gas Autoignition for Knock Prediction in Gasoline Engines written by Andreas Manz and published by Logos Verlag Berlin GmbH. This book was released on 2016-08-18 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Downsizing of modern gasoline engines with direct injection is a key concept for achieving future CO22 emission targets. However, high power densities and optimum efficiency are limited by an uncontrolled autoignition of the unburned air-fuel mixture, the so-called spark knock phenomena. By a combination of three-dimensional Computational Fluid Dynamics (3D-CFD) and experiments incorporating optical diagnostics, this work presents an integral approach for predicting combustion and autoignition in Spark Ignition (SI) engines. The turbulent premixed combustion and flame front propagation in 3D-CFD is modeled with the G-equation combustion model, i.e. a laminar flamelet approach, in combination with the level set method. Autoignition in the unburned gas zone is modeled with the Shell model based on reduced chemical reactions using optimized reaction rate coefficients for different octane numbers (ON) as well as engine relevant pressures, temperatures and EGR rates. The basic functionality and sensitivities of improved sub-models, e.g. laminar flame speed, are proven in simplified test cases followed by adequate engine test cases. It is shown that the G-equation combustion model performs well even on unstructured grids with polyhedral cells and coarse grid resolution. The validation of the knock model with respect to temporal and spatial knock onset is done with fiber optical spark plug measurements and statistical evaluation of individual knocking cycles with a frequency based pressure analysis. The results show a good correlation with the Shell autoignition relevant species in the simulation. The combined model approach with G-equation and Shell autoignition in an active formulation enables a realistic representation of thin flame fronts and hence the thermodynamic conditions prior to knocking by taking into account the ignition chemistry in unburned gas, temperature fluctuations and self-acceleration effects due to pre-reactions. By the modeling approach and simulation methodology presented in this work the overall predictive capability for the virtual development of future knockproof SI engines is improved.
Book Synopsis On the Knocking of Gasoline Engines by : Ludwig Richter
Download or read book On the Knocking of Gasoline Engines written by Ludwig Richter and published by . This book was released on 1926 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is of the greatest importance, not only for automobile engines, but also for every other kind of internal combustion engine, since it limits the degree of compression and the thermal efficiency and its investigation indicates ways for saving fuel.
Book Synopsis Knocking in Gasoline Engines by : Matthias Kratzsch
Download or read book Knocking in Gasoline Engines written by Matthias Kratzsch and published by DCM Druck Center Meckenheim GmbH - www.druckcenter.de. This book was released on 2014-02-27 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: The European Commission is planning to limit emissions under real driving conditions up to high engine loads. RDE (real driving emissions) legislation demands the complete conversion of exhaust gases in the catalytic converter which can only be achieved for spark-ignition engines at lambda=1. High exhaust gas temperatures resulting from late centers of heat release caused by knock can then no longer be limited by mixture enrichment. In addition, higher mean effective pressures are needed to improve the efficiency of SI engines. A strong tendency to knock during stoichiometric combustion in conjunction with high mean effective pressure places exacting demands on the SI engine combustion process. The focus of engine development consequently remains on reducing knock and on avoiding irregular combustion events. In particular, phenomena such as pre-ignition, which is typically observed in downsizing concepts, or extreme knock of the type frequently occurring in highcompression lean-burn concepts, are immense challenges to developers. Contents: Potentials and limits of downsizing | Mega-knock in super-charged gasoline engines interpreted as a localized developing detonation | A contribution to better understanding the pre-ignition phenomenon in highly charged internal combustion engines with direct fuel injection | Minimising autoignition for optimum efficiency in high specific output spark-ignited engines | Reduction in knocking intensity of an SI engine by in-cylinder temperature stratification | New approach to the determination of knock onset | Cylinder pressure-based knock detection – challenges in cylinder pressure indication and application in a new engine-based fuel test method | Irregular combustion: development and calibration of highly boosted SI engines | Optically diagnosing combustion anomalies as part of designing the combustion process | Using surface thermocouples and light conductor measurements to examine the thermal load on a gasoline engine’s components during knocking engine operation | Comparative analysis of low-speed pre-ignition phenomena in SI gasoline and dual fuel diesel-methane engines | LEC-GPN – a new Index for assessing the knock behavior of gaseous fuels for large engines | A statistical modeling approach with detailed chemical kinetics for use in 3DCFD engine knock predictions | Investigation on knocking combustion with reaction kinetics for a turbocharged SIDI engine | Knocking simulation at Mercedes-Benz – application in series production development | The DELTA knocking control – the necessary paradigm shift for engines with high power density | Artificial Intelligence for knock detection | Knock detection strategies based on engine acoustic emission analysis | Continental’s pre-ignition and glow ignition function – detection and avoidance of irregular combustions | Pre-ignition analysis on a turbocharged gasoline engine with direct injection | Knock and irregular combustion – challenges for the new turbocharged, highperformance four-cylinder AMG engine | Simulations and experimental investigations of intermittent pre-ignition series in a turbocharged DISI engine Target group: This book addresses engine developers working for car manufacturers and suppliers. With regard to knocking combustion in spark-ignition engines – irregular combustion – it provides an overview of thermodynamic principals, approaches to measurement and computation together with current trends for mass-production development.
Book Synopsis A Phenomenological Knock Model for the Development of Future Engine Concepts by : Alexander Fandakov
Download or read book A Phenomenological Knock Model for the Development of Future Engine Concepts written by Alexander Fandakov and published by Springer. This book was released on 2018-12-28 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: The majority of 0D/1D knock models available today are known for their poor accuracy and the great effort needed for their calibration. Alexander Fandakov presents a novel, extensively validated phenomenological knock model for the development of future engine concepts within a 0D/1D simulation environment that has one engine-specific calibration parameter. Benchmarks against the models commonly used in the automotive industry reveal the huge gain in knock boundary prediction accuracy achieved with the approach proposed in this work. Thus, the new knock model contributes substantially to the efficient design of spark ignition engines employing technologies such as full-load exhaust gas recirculation, water injection, variable compression ratio or lean combustion. About the Author Alexander Fandakov holds a PhD in automotive powertrain engineering from the Institute of Internal Combustion Engines and Automotive Engineering (IVK) at the University of Stuttgart, Germany. Currently, he is working as an advanced powertrain development engineer in the automotive industry.
Book Synopsis Dyke's Automobile and Gasoline Engine Encyclopedia by : Andrew Lee Dyke
Download or read book Dyke's Automobile and Gasoline Engine Encyclopedia written by Andrew Lee Dyke and published by . This book was released on 1916 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gas Engine written by and published by . This book was released on 1917 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Gas Engine written by and published by . This book was released on 1906 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Conference on Ignition Systems for Gasoline Engines - International Conference on Knocking in Gasoline Engines by : Michael Günther
Download or read book International Conference on Ignition Systems for Gasoline Engines - International Conference on Knocking in Gasoline Engines written by Michael Günther and published by . This book was released on 2021-12-13 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Speed Knock in Gasoline (petrol) Engines Final Report by : British Technical Council for Motor and Petroleum Industries
Download or read book High Speed Knock in Gasoline (petrol) Engines Final Report written by British Technical Council for Motor and Petroleum Industries and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Concentration of Economic Power by : United States. Temporary National Economic Committee
Download or read book Investigation of Concentration of Economic Power written by United States. Temporary National Economic Committee and published by . This book was released on 1939 with total page 2464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Temporary National Economic Committee Publisher : ISBN 13 : Total Pages :1840 pages Book Rating :4.3/5 ( download)
Book Synopsis Investigation of Concentration of Economic Power by : United States. Congress. House. Temporary National Economic Committee
Download or read book Investigation of Concentration of Economic Power written by United States. Congress. House. Temporary National Economic Committee and published by . This book was released on 1940 with total page 1840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Petroleum Times written by and published by . This book was released on 1927 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis DYKE'S AUTOMOBILE AND GASOLINE ENGINE ENCYCLOPEDIA by : A. L. DYKE
Download or read book DYKE'S AUTOMOBILE AND GASOLINE ENGINE ENCYCLOPEDIA written by A. L. DYKE and published by . This book was released on 1920 with total page 998 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Normal Combustion and Knock on Gasoline Engine Noise by : T. Priede
Download or read book The Effect of Normal Combustion and Knock on Gasoline Engine Noise written by T. Priede and published by . This book was released on 1989 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
