Author: Richard SandersPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A Statistical Study of the Relationship Between Intake Valve Dimensions and Engine Performance
Author: Richard SandersGeometric Design Tolerancing: Theories, Standards and Applications
Author: Hoda A. ElMaraghyPublisher: Springer Science & Business Media
ISBN: 1461557976
Category : Science
Languages : en
Pages : 468
Book Description
The importance of proper geometric dimensioning and tolerancing as a means of expressing the designer's functional intent and controlling the inevitable geometric and dimensional variations of mechanical parts and assemblies, is becoming well recognized. The research efforts and innovations in the field of tolerancing design, the development of supporting tools, techniques and algorithms, and the significant advances in computing software and hardware all have contributed to its recognition as a viable area of serious scholarly contributions. The field of tolerancing design is successfully making the transition to maturity where deeper insights and sound theories are being developed to offer explanations, and reliable implementations are introduced to provide solutions. Machine designers realized very early that manufacturing processes do not produce the nominal dimensions of designed parts. The notion of associating a lower and an upper limit, referred to as tolerances, with each dimen sion was introduced. Tolerances were specified to ensure the proper function of mating features. Fits of mating features included clearances, location fits, and interference fits, with various sub-grades in each category assigned a tolerance value depending on the nominal size of the mating features. During the inspection process, a part is rejected if a dimension fell outside the specified range. As the accuracy requirements in assemblies became tighter, designers had to consider other critical dimensions and allocate tolerances to them in order to ensure the assembly's functionality.
Annual Index/abstracts of SAE Technical Papers
Author: A dynamic and statistical analysis of the temperature- and fatigue behavior of a race power unit – The effect of different thermodynamic states
Author: Hölz, PeterPublisher: KIT Scientific Publishing
ISBN: 3731509881
Category : Technology & Engineering
Languages : en
Pages : 294
Book Description
PIV Measurements of In-cylinder Flow and Correlation with Engine Performance
Author: Karen Evelyn BottomERDA Energy Research Abstracts
Author: United States. Energy Research and Development AdministrationPublisher:
ISBN:
Category : Medicine
Languages : en
Pages : 974
Book Description
A Study of Variable Valve Timing, Early Intake Valve Closing Vs. Late Intake Valve Closing, on the Thermal Efficiency and Performance of Spark-ignition Engines at Part Loads
Author: Sean DaCosta CranstonPublisher:
ISBN:
Category :
Languages : en
Pages : 43
Book Description
Acid Precipitation
Author: Modelling Diesel Combustion
Author: P. A. LakshminarayananPublisher: Springer Science & Business Media
ISBN: 904813885X
Category : Technology & Engineering
Languages : en
Pages : 313
Book Description
Phenomenology of Diesel Combustion and Modeling Diesel is the most efficient combustion engine today and it plays an important role in transport of goods and passengers on land and on high seas. The emissions must be controlled as stipulated by the society without sacrificing the legendary fuel economy of the diesel engines. These important drivers caused innovations in diesel engineering like re-entrant combustion chambers in the piston, lower swirl support and high pressure injection, in turn reducing the ignition delay and hence the nitric oxides. The limits on emissions are being continually reduced. The- fore, the required accuracy of the models to predict the emissions and efficiency of the engines is high. The phenomenological combustion models based on physical and chemical description of the processes in the engine are practical to describe diesel engine combustion and to carry out parametric studies. This is because the injection process, which can be relatively well predicted, has the dominant effect on mixture formation and subsequent course of combustion. The need for improving these models by incorporating new developments in engine designs is explained in Chapter 2. With “model based control programs” used in the Electronic Control Units of the engines, phenomenological models are assuming more importance now because the detailed CFD based models are too slow to be handled by the Electronic Control Units. Experimental work is necessary to develop the basic understanding of the pr- esses.
Unsteady Combustion
Author: F. CulickPublisher: Springer Science & Business Media
ISBN: 9400916205
Category : Technology & Engineering
Languages : en
Pages : 560
Book Description
This book contains selected papers prepared for the NATO Advanced Study Institute on "Unsteady Combustion", which was held in Praia da Granja, Portugal, 6-17 September 1993. Approximately 100 delegates from 14 countries attended. The Institute was the most recent in a series beginning with "Instrumentation for Combustion and Flow in Engines", held in Vimeiro, Portugal 1987 and followed by "Combusting Flow Diagnostics" conducted in Montechoro, Portugal in 1990. Together, these three Institutes have covered a wide range of experimental and theoretical topics arising in the research and development of combustion systems with particular emphasis on gas-turbine combustors and internal combustion engines. The emphasis has evolved roughly from instrumentation and experimental techniques to the mixture of experiment, theory and computational work covered in the present volume. As the title of this book implies, the chief aim of this Institute was to provide a broad sampling of problems arising with time-dependent behaviour in combustors. In fact, of course, that intention encompasses practically all possibilities, for "steady" combustion hardly exists if one looks sufficiently closely at the processes in a combustion chamber. The point really is that, apart from the excellent paper by Bahr (Chapter 10) discussing the technology of combustors for aircraft gas turbines, little attention is directed to matters of steady performance. The volume is divided into three parts devoted to the subjects of combustion-induced oscillations; combustion in internal combustion engines; and experimental techniques and modelling.