Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Effects Of Fuel Composition On Mixture Formation In A Firing Direct Injection Spark Ignition Disi Engine
Download Effects Of Fuel Composition On Mixture Formation In A Firing Direct Injection Spark Ignition Disi Engine full books in PDF, epub, and Kindle. Read online Effects Of Fuel Composition On Mixture Formation In A Firing Direct Injection Spark Ignition Disi Engine ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Effects of Fuel Composition on Mixture Formation in a Firing Direct-injection, Spark-ignition (DISI) Engine by : Martin H. Davy
Download or read book Effects of Fuel Composition on Mixture Formation in a Firing Direct-injection, Spark-ignition (DISI) Engine written by Martin H. Davy and published by . This book was released on 2000 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direkteinspritzung im Ottomotor IV by : Ulrich Spicher
Download or read book Direkteinspritzung im Ottomotor IV written by Ulrich Spicher and published by expert verlag. This book was released on 2003 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Automotive Gasoline Direct-Injection Engines by : Fuquan Zhao
Download or read book Automotive Gasoline Direct-Injection Engines written by Fuquan Zhao and published by SAE International. This book was released on 2002-05-15 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the latest global technical initiatives in the rapidly progressing area of gasoline direct injection (GDI), spark-ignited gasoline engines and examines the contribution of each process and sub-system to the efficiency of the overall system. Including discussions, data, and figures from many technical papers and proceedings that are not available in the English language, Automotive Gasoline Direct Injection Systems will prove to be an invaluable desk reference for any GDI subject or direct-injection subsystem that is being developed worldwide.
Book Synopsis Automotive Spark-Ignited Direct-Injection Gasoline Engines by : F. Zhao
Download or read book Automotive Spark-Ignited Direct-Injection Gasoline Engines written by F. Zhao and published by Elsevier. This book was released on 2000-02-08 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: The process of fuel injection, spray atomization and vaporization, charge cooling, mixture preparation and the control of in-cylinder air motion are all being actively researched and this work is reviewed in detail and analyzed. The new technologies such as high-pressure, common-rail, gasoline injection systems and swirl-atomizing gasoline fuel injections are discussed in detail, as these technologies, along with computer control capabilities, have enabled the current new examination of an old objective; the direct-injection, stratified-charge (DISC), gasoline engine. The prior work on DISC engines that is relevant to current GDI engine development is also reviewed and discussed. The fuel economy and emission data for actual engine configurations have been obtained and assembled for all of the available GDI literature, and are reviewed and discussed in detail. The types of GDI engines are arranged in four classifications of decreasing complexity, and the advantages and disadvantages of each class are noted and explained. Emphasis is placed upon consensus trends and conclusions that are evident when taken as a whole; thus the GDI researcher is informed regarding the degree to which engine volumetric efficiency and compression ratio can be increased under optimized conditions, and as to the extent to which unburned hydrocarbon (UBHC), NOx and particulate emissions can be minimized for specific combustion strategies. The critical area of GDI fuel injector deposits and the associated effect on spray geometry and engine performance degradation are reviewed, and important system guidelines for minimizing deposition rates and deposit effects are presented. The capabilities and limitations of emission control techniques and after treatment hardware are reviewed in depth, and a compilation and discussion of areas of consensus on attaining European, Japanese and North American emission standards presented. All known research, prototype and production GDI engines worldwide are reviewed as to performance, emissions and fuel economy advantages, and for areas requiring further development. The engine schematics, control diagrams and specifications are compiled, and the emission control strategies are illustrated and discussed. The influence of lean-NOx catalysts on the development of late-injection, stratified-charge GDI engines is reviewed, and the relative merits of lean-burn, homogeneous, direct-injection engines as an option requiring less control complexity are analyzed.
Book Synopsis Multi-dimensional Modeling of Mixing and Combustion of Direct Injection Spark Ignition Engines by : Li Fan
Download or read book Multi-dimensional Modeling of Mixing and Combustion of Direct Injection Spark Ignition Engines written by Li Fan and published by . This book was released on 2000 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Homogeneous Charge Compression Ignition Engines, 2007 by :
Download or read book Homogeneous Charge Compression Ignition Engines, 2007 written by and published by . This book was released on 2007 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Index/abstracts of SAE Technical Papers by :
Download or read book Annual Index/abstracts of SAE Technical Papers written by and published by . This book was released on 2005 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Fuel Composition on Exhaust Emissions from a Spark-ignition Engine by : Ralph David Fleming
Download or read book Effect of Fuel Composition on Exhaust Emissions from a Spark-ignition Engine written by Ralph David Fleming and published by . This book was released on 1970 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mixture Formation and Combustion in a Spark Ignition Engine with Direct Fuel Injection by : L. Spiegel
Download or read book Mixture Formation and Combustion in a Spark Ignition Engine with Direct Fuel Injection written by L. Spiegel and published by . This book was released on 1992 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation of Mixture Formation Processes in a Natural Gas Powered Direct Injection Spark Ignition Engine by : Xinyi Liu
Download or read book An Investigation of Mixture Formation Processes in a Natural Gas Powered Direct Injection Spark Ignition Engine written by Xinyi Liu and published by . This book was released on 2000 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Literature Abstracts by : Society of Automotive Engineers
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 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Modeling of Gasoline Direct Injection Spark Ignition Engines During Cold-start by : Arun Cherumuttathu Ravindran
Download or read book Numerical Modeling of Gasoline Direct Injection Spark Ignition Engines During Cold-start written by Arun Cherumuttathu Ravindran and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developing a profound understanding of the combustion characteristics of the cold-start phase of a Direct Injection Spark Ignition (DISI) engine is critical to meeting the increasingly stringent emissions regulations. Computational Fluid Dynamics (CFD) modeling of gasoline DISI combustion under normal operating conditions has been discussed in detail using both the detailed chemistry approach and flamelet models (e.g., the G-Equation). However, there has been little discussion regarding the capability of the existing models to capture DISI combustion under cold-start conditions. Accurate predictions of cold-start behavior involves the efficient use of multiple models - spray modeling to capture the split injection strategies, models to capture the wall-film interactions, ignition modeling to capture the effects of retarded spark timings, combustion modeling to accurately capture the flame front propagation, and turbulence modeling to capture the effects of decaying turbulent kinetic energy. The retarded spark timing helps to generate high heat flux in the exhaust for a rapid catalyst light-off of the after-treatment system during cold-start. However, the adverse effect is a reduced turbulent flame speed due to decaying turbulent kinetic energy. Accordingly, developing an understanding of the turbulence-chemistry interactions is imperative for accurate modeling of combustion under cold-start conditions.This study introduces a modified version of the G-Equation combustion model called the GLR model (G-Equation for Lower Reynolds number regimes) that exhibits improved performance under cold-start conditions. The model attempts to estimate the turbulent flame speed based on the local conditions of fuel concentration and turbulence intensity. The local conditions and the associated turbulent-chemistry interactions are studied by tracking the flame front on the Borghi-Peters regime diagram. To accurately model the DISI combustion process, it is important to account for the effects of the spark energy discharge process. In this work, an ignition model is presented that is compatible with the G-Equation combustion model, and which accounts for the effects of plasma expansion and local mixture properties such as turbulence and the equivalence ratio on the early flame kernel growth. The model is referred to as the Plasma Velocity on G-Surface (PVG) model, and it uses the G-surface to capture the kernel growth. The model derives its theory from the DPIK model and applies its concepts onto an Eulerian framework, thereby removing the need for Lagrangian particles to track the kernel growth. Finally, a methodology of using machine learning (ML) techniques in combination with 3D CFD modeling to optimize the cold-start fast-idle phase of a DISI engine is presented. The optimization process implies the identification of the range of operating parameters, that will ensure the following criteria under cold-start conditions: (1) a fixed IMEP of 2 bar (BMEP of 0 bar), (2) a stoichiometric exhaust equivalence ratio (based on carbon-to-oxygen atoms) to ensure the efficient operation of the after-treatment system, (3) enough exhaust heat flux to ensure a rapid light-off of the after-treatment system, and (4) acceptable NOx and HC emissions. Gaussian Process Regression (GPR)-based ML models are employed to make predictions about DISI cold-start behavior with acceptable accuracy and a substantially reduced computational time.
Book Synopsis A Comprehensive Analysis of Natural Gas Direct Injection and of Mixture Formation in Spark Ignition Engines by : Nicola Rapetto
Download or read book A Comprehensive Analysis of Natural Gas Direct Injection and of Mixture Formation in Spark Ignition Engines written by Nicola Rapetto and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis IMPACT OF NATURAL GAS DIRECT INJECTION ON THERMAL EFFICINECY IN A SPARK IGNITION ENGINE by :
Download or read book IMPACT OF NATURAL GAS DIRECT INJECTION ON THERMAL EFFICINECY IN A SPARK IGNITION ENGINE written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : Interest in natural gas as an internal combustion engine fuel has been renewed due to its increasing domestic availability and stable price relative to other petroleum fuel sources. Natural gas, comprised mainly of methane, allows for up to a 25% reduction in engine out CO2 emissions due to a more favorable hydrogen-to-carbon ratio, relative to traditional petroleum sources. Traditional methods of injecting natural gas can lead to poor part-load performance, as well as a power density loss at full load due to air displacement in the intake manifold. Natural gas direct injection, which allows the fuel to be injected directly into the cylinder, leads to an improvement in the in-cylinder charge motion due to the momentum of the gaseous injection event. While research performed with natural gas typically occurs at full load, the current research project focused on a part-load condition as this was most representative of real world driving conditions, becoming increasingly relevant for a downsized boosted application. The goal of this research was to further the understanding of natural gas direct injection and its resulting effect on the thermal efficiency of a GDI engine at a part-load condition. Key objectives were to measure and quantify the effects of injection location, injection timing, and exhaust gas recirculation on the thermal efficiency of the engine. A single-cylinder research engine was equipped for natural gas direct injection at Argonne National Laboratory, with detailed tests and analysis being performed. Experimental results show that the injection location played a crucial role in the mixture formation process; injecting along the tumble motion led to a greater thermal efficiency than injecting directly towards the piston due to improved mixing. The start of injection had a strong impact on the thermal efficiency, which agreed well with literature. While injecting after intake valve closure led to increased mixture flame speeds, there was a decrease in thermal efficiency due to decreased mixing time leading to increased stratification. An advanced start of injection timing led to the highest thermal efficiency, as this provided the best tradeoff between mixing time and resulting heat losses. In addition, the injection location and timing directly influenced the dilution tolerance. Injecting along the tumble motion produced the highest dilution tolerance due to the gaseous injection event amplifying the tumble motion, improving in-cylinder mixing.
Book Synopsis Mixture Formation in Spark-Ignition Engines by : Hans Peter Lenz
Download or read book Mixture Formation in Spark-Ignition Engines written by Hans Peter Lenz and published by Springer Verlag. This book was released on 1992 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reducing Particulate Emissions in Gasoline Engines by : Thorsten Boger
Download or read book Reducing Particulate Emissions in Gasoline Engines written by Thorsten Boger and published by SAE International. This book was released on 2018-11-28 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: For years, diesel engines have been the focus of particulate matter emission reductions. Now, however, modern diesel engines emit less particles than a comparable gasoline engine. This transformation necessitates an introduction of particulate reduction strategies for the gasoline-powered vehicle. Many strategies can be leveraged from diesel engines, but new combustion and engine control technologies will be needed to meet the latest gasoline regulations across the globe. Particulate reduction is a critical health concern in addition to the regulatory requirements. This is a vital issue with real-world implications. Reducing Particulate Emissions in Gasoline Engines encompasses the current strategies and technologies used to reduce particulates to meet regulatory requirements and curtail health hazards - reviewing principles and applications of these techniques. Highlights and features in the book include: Gasoline particulate filter design, function and applications Coated and uncoated three way catalyst design and integration Measurement of gasoline particulate matter emission, both laboratory and PEMS The goal is to provide a comprehensive assessment of gasoline particulate emission control to meet regulatory and health requirements - appealing to calibration, development and testing engineers alike.
Book Synopsis Soot Formation in Direct Injection Spark Ignition Engines Under Cold-idle Operating Conditions by : Justin Edward Ketterer
Download or read book Soot Formation in Direct Injection Spark Ignition Engines Under Cold-idle Operating Conditions written by Justin Edward Ketterer and published by . This book was released on 2013 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct injection spark ignition engines are growing rapidly in popularity, largely due to the fuel efficiency improvements in the turbo-downsized engine configuration that are enabled by direct injection technology. Unfortunately, direct injection spark ignition engines also emit higher concentrations of particulate matter than conventional port fuel injected engines. In light of evidence linking particulate matter to adverse human health impacts, particulate emissions standards have been strengthened in both the United States and in Europe. A great deal of research seeking particulate emissions reductions is ongoing. This study contributes to this body of research by offering a refined explanation of the soot formation process in direct injection engines under cold-idle operating conditions. A number of engine and rapid compression machine experiments were conducted in order to understand the impacts of engine operating conditions and fuel composition on particulate matter emissions. Using these data, a conceptual model describing the formation of soot in direct injection engines is outlined. This model suggests that soot forms after the main combustion event in fuel vapour plumes surrounding liquid fuel films on cylinder surfaces through pyrolytic reactions enabled by heat transfer from burned gases from the primary combustion event.
