Download or read book Modeling and Simulation of a Supercharger written by Raymond Merala and published by . This book was released on 1987 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical Simulation of Pressure Wave Supercharger with Pockets Operating at Different Speeds written by Pawan Sutur and published by . This book was released on 2020 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pressure wave supercharger is an application of wave rotor technology that utilizes compression waves produced by high-pressure engine exhaust gas to compress the fresh intake air within the channels. The phenomena within the wave rotor channels are governed by compression and expansion waves initiated when the channel ends are periodically exposed to differing pressure ports. Two incoming fluids are brought into contact for a very short amount of time to facilitate efficient energy and momentum transfer, thereby exchanging pressure dynamically between the fluids by means of unsteady pressure waves. Since the energy transfer is based on unsteady pressure waves, correct matching of waves and ports is essential for optimum results. Mistiming of the waves in the channels is detrimental to the efficient exchange of pressure and low-pressure exhaust scavenging, which ensures minimum exhaust gas recirculation. Due to varying speed and load conditions of the unit to be supercharged, it is not always possible to maintain the rotor speed constant at the design point. To mitigate the effects of wave mistiming due to varying speed, a well-designed combination of wall-pockets was used in Comprex® pressure wave supercharger. The wall-pockets are the recesses provided in the endplates of pressure wave superchargers to create necessary pressure zones at desired locations. This thesis details an extensive qualitative and computational investigation of the performance of pressure wave superchargers with pockets. Numerical simulations of pressure wave superchargers have been performed using the wave rotor analysis codes employed at the Combustion and Propulsion Research Laboratory at IUPUI. This work also pays close attention to inspecting the numerical schemes and modeling of different physical phenomena used in each code. A comparative verification of the wave rotor analysis codes has been conducted to ensure that the same fundamental numerical scheme is correctly implemented in each code. The issue of low-pressure scavenging has been demonstrated by simulating the four-port (pocketless) pressure wave supercharger operating at lower speeds. The wall-pockets have been modeled using a simple lumped volume technique. The gas state in the lumped volume of pockets is estimated using the continuity and energy equations such that the net mass and energy fluxes between each pocket and the wave rotor channels are close to zero. The lumped volume models of pockets have been implemented in the four-port wave rotor configurations to simulate the pressure wave superchargers with pockets. The simulation results show that the pockets assist to maintain sufficient pressure in the desired zones to facilitate proper low-pressure scavenging during lower rotor speed operations. The Comprex simulation results have been observed to be in good agreement with experimental data and qualitative analysis. Specific observations on the performance of each code and comprehensive simulation results have been presented.

Download or read book Development and Analysis of Models of a Supercharger written by Curtis C. Carroll and published by . This book was released on 2004 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: When attempting to model complicated systems, there are two strategies that can be used. One is to create a model that accounts for as many phenomena in the system as possible in order to yield precise results. The other is to identify the key phenomena that affect the overall output, and then develop a simplified model based on those phenomena. While the first method can give desirable outputs, development is resource intensive. The second strategy, though not capable of the accuracy of the first, is much more cost effective and can give quantitative answers that are just as valuable as detailed outputs. In regards to an automotive supercharger, the first method has already been employed to create a computational fluid dynamics (CFD) model of airflow through the system. The data generated from this model was analyzed and compared with measured data taken at identical conditions to determine if the CFD model was modeling the supercharger correctly, both in terms of airflow and sound generation. Also, a flow model for one portion of the supercharger cycle was developed using the key phenomena model approach. Results from this model were tested for accuracy against measured data. In addition, design applications for the second model were investigated, and a test of the effects of basic design changes conducted.

Download or read book Simulation of a Positive Displacement Supercharger written by S. C. Sorenson and published by . This book was released on 1984 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1D and Multi D Modeling Techniques for IC Engine Simulation written by Angelo Onorati and published by SAE International. This book was released on 2020-04-06 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1D and Multi-D Modeling Techniques for IC Engine Simulation provides a description of the most significant and recent achievements in the field of 1D engine simulation models and coupled 1D-3D modeling techniques, including 0D combustion models, quasi-3D methods and some 3D model applications.

Download or read book Analog Simulation of Pressure fired Steam Generator Supercharger and Control System written by J. W Banham (Jr) and published by . This book was released on 1968 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analog computer simulation of the DE1040 Class pressure-fired steam generator, supercharger, combustion controls, and feedwater regulator was prepared. Information for dynamic modeling was obtained from a combination of open and closed loop experimental data and from theoretical analysis. Tests of the simulation transient response were conducted for comparison with recorded data obtained from a real system in order to establish the validity of the model. Agreement was considered satisfactory. Evaluation of four proposed variations on the basic configuration of the combustion control system was conducted. Of these variations, one in particular produced excellent results in terms of improvement of stability and transient response. This scheme employed a proportional controller, amplifying a positive error from the combustion air flow closed loop, to operate the supercharger steam turbine accelerating valve. It was recommended that this scheme be further evaluated. (Author).

Download or read book Supercharging Performance Handbook written by Jeff Hartman and published by . This book was released on with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Dynamic Systems Measurement and Control written by and published by . This book was released on 1988 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Application of 1D Simulation to Model Turbocharged and Supercharged Spark Ignition Engines written by D. C. Gurney and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Complete Guide to Street Supercharging written by Pat Ganahl and published by CarTech Inc. This book was released on 2009 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Street Supercharging, from industry veteran Pat Ganahl, has been the guidebook for supercharging fans for years, As time and technology march on, updates are required to keep things current, and that's exactly what this all new, all color edition of street supercharging does. Covered are blower basics, blower background and history, a tutorial on how blowers work, information on used superchargers and their practicality, chapters on the different styles of superchargers, like the traditional roots style blowers vs. the emerging centrifugal styles, blower installation, how to build your engine to handle the demands of a blower application, and even information on tweaking factory blower systems.

Download or read book Two stage Supercharging written by Richard S. Buck and published by . This book was released on 1941 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: The arrangement of the parts and the installation and control problems of two-stage mechanically driven superchargers for aircraft engines are discussed. Unless an entirely new form of supercharger is developed, there will be a definite need for a two-stage centrifugal supercharger. It is shown that the two-stage mechanically driven supercharger itself is a comparatively simple device; the complications arise from the addition of intercoolers and controls.

Download or read book Mean Value Modeling of a Pressure Wave Supercharger Including Exhaust Gas Recirculation Effects written by Felix Weber and published by . This book was released on 2001 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modelling the Twin screw Supercharger written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Trends in Vehicle Design Research 1987 written by American Society of Mechanical Engineers. Winter Annual Meeting and published by . This book was released on 1987 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Turbochargers and Turbocharging written by Evangelos G. Giakoumis and published by Nova Science Publishers. This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supercharging has long been established as the most successful means to maximise power output from a specific engine size. Through supercharging, the inlet air density is increased, usually by means of a compressor, and by doing so the amount of air trapped in the cylinders is increased accordingly. As a result, efficient burning of a proportionately higher amount of fuel is enabled. By far, the most successful version of supercharging is turbocharging. Here, the expansion in a turbine of the exhaust gases leaving the cylinders supplies the power needed to drive the compressor. At the moment, practically all diesel engines are turbocharged, with a continuously increasing penetration in the highly competitive market of SI-powered vehicles. The current book on turbochargers and turbocharging, comprising fifteen chapters, gathers important and novel research on many modern aspects of turbocharging for all kinds of gasoline and diesel-powered engine applications (automotive, truck, marine and aircraft). For example, characterisation of the value proposition of turbocharged vehicles, marine engines turbo-compounding, fundamental issues of turbocharger lag and its relation with engine-out PM emissions, variable geometric compressors, automotive two-stage turbocharging, and dynamic operation of turbochargers including VGT and surging effects are amongst the topics analysed. Review papers form a very important part of the book, namely the discussion and in-depth analysis of various automotive boosting systems, turbocharger reduced-order modeling, heat transfer and pulsating flows in turbomachinery, mathematical models for turbocharged engines, and turbomachine-based engine throttling. A considerable portion of the book (seven chapters) deals with control-oriented modeling techniques relating to the turbocharger and/or the whole engine power-plant. Such models have proven valuable during the design of both turbochargers and turbocharged engines, and are described and discussed in detail for a variety of automotive and aircraft applications. The book is written for post-graduate students, engineers and researchers in the field of internal combustion engines (diesel and SI) and turbochargers.

Download or read book Modelling of Airflow Through Twin Screw Supercharger written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling and Control of Pressure wave Supercharged Engine Systems written by Peter Spring and published by . This book was released on 2006 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: