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EN. Hydraulics. Basic Level. Textbook. P. A. T. T. 1Z1. 0M1. 0P1. 50 l . The object of this book is to teach you more about hydraulics and its areas of. Standard hydraulics textbook. Francis, J.R.D. and P. Numerical-methods-and- osakeya.info Fenton, J. D. (), On the. The package includes a colored textbook, an interactive software-based tool to size hydraulic components, electronic files for the animated.
In the first seven chapters the authors describe in a well structured and almost encyclopaedic way different types of components with their principles of operation, repeatedly illustrated with figures and hydraulic circuits. The number of utilized formulae is kept to an absolute minimum and simple algebraic computations are restricted to the many interesting examples which clarify design rules in the text.
No previous knowledge of hydraulics or calculus is needed, except in the last chapter which presumes an elementary knowledge of ordinary differential equations and Laplace transforms. Each chapter is interlaced with numerous tables, diagrams and hundreds of practical hints which make the book invaluable for practising people in the field.
As a consequence, the aim of the authors to cater to a broad public of equipment downloadrs, craftsmen, practising engineers, lecturers and students, is certainly reached.
The book is also carefully edited, only SI-units are used, and the choice between a hard cover or a low cost student edition is possible. Since nothing is perfect, it is normal that the book displays some shortcomings. The weakest link is certainly the chapter about pumps. For a few types of pump, the explanations with corresponding figures are not clear enough to understand well their working principles the internal gear pump of p.
The drawing of a radial piston pump is overexaggeratedly detailed, which is not relevant to the text, and Fig. I want to finish with a strictly personal remark: it is a pity that the authors did not speak of the so important valve coefficients flow gain, flow-pressure coefficient, pressure sensitivity , pressure sensitivity curves and dynamic characteristics of servovaives with the aid of Bode diagrams.
It would fit perfectly in chapter 8 and would make the book even more valuable as an "introductory" university course. References W. Controlling Electrohydraulic Systems. Marcel Dekker, New York, Banks, D. Banks Industrial Hydraulic Systems: An Introduction. Prentice-Hall, New York. Dietz, U.
VDI-Verlag, Diisseldorf. Faulhaber, S. Feuser', A. McCIoy, D. Martin Control of Fluid Power; Analysis and Design, 2nd ed. Ellis Horwood, Chichester, U. Merrit, H. Hydraulic Control Systems.
Wiley, New York. Quetting, P. Rexroth Mannesmann Der Hydraulik Trainer, Band 1.
Stringer, J. Hydraulic Systems Analysis. Macmillan, London.
Watton, J. About the reviewer Herman Ramon worked as an agricultural engineer, specializing in mechanics, at the State University of Ghent, Belgium during From , he was an assistant at the Free University of Brussels Department of Hydrology, where his main task was teaching exercises in subsurface hydrology. He then worked at a private firm as project manager in the feedmill industry, being responsible for the development of mathematical models and the app!
Since , Mr Ramon has been a research engineer, partly at the State University of Ghent, Laboratory of Automatic Control, and partly at the Catholic University of Louvain, Department of Agricultural Engineering, while preparing a PhD thesis on the controlling of undesirable flexible- and rigid-body motions in agricultural machinery with electro-hydraulic actuators. THE PURPOSE of the book as stated in the preface is to serve as a textbook at the University of California at Los Angeles, for either a senior level undergraduate introductory course in stochastic processes or for a first year graduate level follow-up course.
These courses are prerequisites for graduate courses in control and communication systems engineering. Wiley, Chichester, ; hardback and paperback editions available. Mortensen mainly with discrete mathematics, to grips with the more abstract style of mathematics used in current electrical engineering research. Such students will follow chapters 2, 4, 5, 6 i. Due to the development of contaminant-sensitivity test procedures at the Fluid Power Research Center, formerly located at Oklahoma State University, it is now possible to evaluate the efficiency of seals [ 11, and breathers in preventing the entrance of particulate contamination as well as the removal efficiency of hydraulic filters [ 13, In addition, contaminant sensitivity test procedures are available to evaluate the resistance or tolerance of a hydraulic component, such as a pump, to entrained particulate contaminants [ Therefore, knowing the ability of the seals and breathers to prevent the entrance of contamination and the effectiveness of the filter in removing that contaminant which does enter the system, a reasonable selection of the pump to produce the desired service life can be made.
Table 1. This subject is covered in much greater detail in Chapter 3. Preparation of Pipes and Fittings When installing pipes and fittings on a hydraulic system, it is imperative that they be as clean as possible. The following steps are recommended to prepare metal pipes and fittings prior to installation [ 1.
Ream inside and outside edges of pipe or tubing and clean with a wire brush to loosen and remove any particles. Sandblast short pieces of pipe and tubing to remove any rust and scale. In the case of longer pieces or short pieces having complex shapes, they first should be cleaned of all grease and oil in a degreasing solvent and then pickled in a suitable solution until all rust and scale is removed.
After pickling, rinse all parts thoroughly in cold running water and then immerse parts in a tank containing neutralizing solution at the proper temperature and length of time as recommended by the manufacturer. Rinse parts in hot water and place into another tank containing an antirust solution.
If parts are not to be immediately installed, they should be left to air-dry with antirust solution remaining on them.
If pipes are dry and will be stored, they should be capped to prevent dirt from entering. Before using any pickled part, it should be thoroughly flushed with a suitable degreasing solvent. Cover all openings into the hydraulic system to prevent dirt and any foreign matter from entering the system. Inspect all threaded fittings and remove any burrs or metal slivers. Before filling or adding hydraulic fluid to the reservoir, make sure that the fluid is as specified and that it is clean.
When adding hydraulic fluid to the reservoir, use a fluid filtration cart to prefilter the fluid as it enters the reservoir. Never add fluid directly from the storage container or drum without filtering. A pump exhibits mechanical-type losses as well as volumetric losses . Mechanical losses are the result of the motion of the working element within the pump because of friction.
As shown previously [Eq. Obviously, the actual torque is greater than this theoretical value in order to make up for the mechanical losses within the pump. As stated earlier, the mechanical efficiency is the ratio of the theoretical torque to the actual torque [Eq.
The effectiveness of a pump in converting the mechanical input energy into output hydraulic energy must be measured by tests. Therefore, the volumetric efficiency is the ratio of the actual flow to the theoretical flow; this parameter reflects the magnitude of the volumetric losses [Eq. Overall efficiency is equal to the volumetric efficiency multiplied by the mechanical efficiency [Eq.
To properly select a hydraulic pump for a given application, efficiency information is extremely important.
These data must be acquired by the pump manufacturer by testing and are normally reported in a graph resembling that shown in Fig. The upper curves in this figure show that at a given load pressure, the volumetric efficiency increases with speed. This is because all fluids have a property known as viscosity, and at greater and greater speeds, there is insufficient time available for the fluid to leak across to case or slip past clearances in the pump.