Hydraulic Vs Electric

Hydraulic Vs Electric PDF Author: David Clough
Publisher:
ISBN: 9780711035508
Category : Diesel locomotives
Languages : en
Pages : 0

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Book Description
As British Rail approached modernisation of its locomotive fleet in the mid-50s, there was two competing means of using diesel engines as main-line locomotives - hydraulic and electric. This title explores the history of the standard classes that emerged after the victory of the diesel-electric school.

Hydraulic Vs Electric

Hydraulic Vs Electric PDF Author: David Clough
Publisher:
ISBN: 9780711035508
Category : Diesel locomotives
Languages : en
Pages : 0

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Book Description
As British Rail approached modernisation of its locomotive fleet in the mid-50s, there was two competing means of using diesel engines as main-line locomotives - hydraulic and electric. This title explores the history of the standard classes that emerged after the victory of the diesel-electric school.

Hydraulic and Electric-Hydraulic Control Systems

Hydraulic and Electric-Hydraulic Control Systems PDF Author: R.B. Walters
Publisher: Springer Science & Business Media
ISBN: 9401594279
Category : Science
Languages : en
Pages : 331

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Book Description
Force and motion control systems of varying degrees of sophistication have shaped the lives of all individuals living in industrialized countries all over the world, and together with communication technology are largely responsible for the high standard ofliving prevalent in many communities. The brains of the vast majority of current control systems are electronic, in the shape of computers, microprocessors or programmable logic controllers (PLC), the nerves are provided by sensors, mainly electromech anical transducers, and the muscle comprises the drive system, in most cases either electric, pneumatic or hydraulic. The factors governing the choice of the most suitable drive are the nature of the application, the performance specification, size, weight, environ mental and safety constraints, with higher power levels favouring hydraulic drives. Past experience, especially in the machine tool sector, has clearly shown that, in the face of competition from electric drives, it is difficult to make a convincing case for hydraulic drives at the bottom end of the power range, specifically at fractional horsepower level. A further, and frequently overriding factor in the choice of drive is the familiarity of the system designer with a particular discipline, which can inhibit the selection of the optimum and most cost-effective solution for a given application. One of the objectives of this book is to help the electrical engineer overcome his natural reluctance to apply any other than electric drives.

Hydraulic and Electro-Hydraulic Control Systems

Hydraulic and Electro-Hydraulic Control Systems PDF Author: R.B. Walters
Publisher: Springer Science & Business Media
ISBN: 9401138400
Category : Technology & Engineering
Languages : en
Pages : 260

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Book Description
Force and motion control systems of varying degrees of sophistication have shaped the lives of all individuals living in industrialized countries all over the world, and together with communication technology are largely responsible for the high standard ofliving prevalent in many communities. The brains of the vast majority of current control systems are electronic, in the shape of computers, microprocessors or programmable logic controllers (PLC), the nerves are provided by sensors, mainly electromech anical transducers, and the muscle comprises the drive system, in most cases either electric, pneumatic or hydraulic. The factors governing the choice of the most suitable drive are the nature of the application, the performance specification, size, weight, environ mental and safety constraints, with higher power levels favouring hydraulic drives. Past experience, especially in the machine tool sector, has clearly shown that, in the face of competition from electric drives, it is difficult to make a convincing case for hydraulic drives at the bottom end of the power at fractional horsepower level. A further, and frequently range, specifically overriding factor in the choice of drive is the familiarity of the system designer with a particular discipline, which can inhibit the selection of the optimum and most cost-effective solution for a given application. One of the objectives of this book is to help the electrical engineer overcome his natural reluctance to apply any other than electric drives.

Power Transmission

Power Transmission PDF Author: Thomas E. Scott
Publisher: Pearson
ISBN:
Category : Power transmission
Languages : en
Pages : 344

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Book Description
Focusing on the application of technology--not the design of machinery--this volume is designed to help manufacturing technologists and technical managers make intelligent, well-founded decisions regarding power transmission in manufacturing processes. Using a cross-disciplinary approach that relates mechanical, hydraulic, pneumatic, and electrical concepts and examples, it presents a straightforward development from the basic elements to the complex systems that achieve the full spectrum of manufacturing tasks in industry. It is not a "how to," but rather an exposé of alternative approaches that can be weighed in the context of cost, ease of implementation, efficiency, flexibility, adaptability, and other payoff factors that lead to profitable approaches to manufacturing. Features numerous descriptive and illustrative figures and problems, an no sophisticated mathematics. MECHANICAL POWER TRANSMISSION. Simple Machines--Mechanical Devices. Mechanical Power Transmission (Gears. Belts and Chains). Mechanical Power Transmission (Clutches, Couplings, Bearings). Specialized Devices. FLUID POWER TRANSMISSION. Hydraulics. Pneumatics. ELECTRICAL POWER TRANSMISSION. Electricity and Electromagnetism. Electric Motors. PRIME MOVERS--HEAT ENGINES. Heat Engines--Principle of Operation. Heat Engines--Types and Examples. Industrial Control. For manufacturing technologists and technical managers responsible for power transmission and its applications.

Fluid Power Pumps and the Electrification

Fluid Power Pumps and the Electrification PDF Author: Samuel Kärnell
Publisher: Linköping University Electronic Press
ISBN: 9179298303
Category :
Languages : en
Pages : 72

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Book Description
More and more vehicles are being electrified. Mobile working machines and heavy trucks are not excluded, and these machines are often hydraulically intense. Electrification entails new requirements for the hydraulic system and its components, and these requirements must be taken into consideration. Hydraulic systems have looked similar for a long time, but now there is an opportunity to advance. Many things change when a diesel engine is replaced with an electric motor. For example, variable-speed control becomes more relevant, electric regeneration becomes possible, and the use of multiple prime movers becomes an attractive alternative. The noise from the hydraulic system will also be more noticeable when the diesel engine is gone. Furthermore, the introduction of batteries to the system makes the energy more valuable, since batteries are heavy and costly compared to a diesel tank. Therefore, it is commercially viable to invest in the hydraulic system. This thesis revolves around the heart of the hydraulic system, that also is the root of all evil. That is the pump. Traditionally, a pump has had either a fixed displacement or a continuously variable displacement. Here, the focus is on something in between, namely a pump with discrete displacement. The idea of discrete displacement is far from unique, but has not been investigated in detail in combination with variable speed before. In this thesis, a novel design for a quiet pump with discrete displacement is presented and analysed. The results show that discrete displacement is relevant from an energy perspective for machines working extensively at high pressure levels and with low flow rates, and that a few discrete values are enough to make a significant difference. However, for other cycles, the possible energy gains are very limited, but the discrete displacement can be a valuable feature if downsizing the electric machine is of interest.

Tap Water as a Hydraulic Pressure Medium

Tap Water as a Hydraulic Pressure Medium PDF Author: Erik Trostmann
Publisher: CRC Press
ISBN: 9780824705053
Category : Science
Languages : en
Pages : 226

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Book Description
"Showcases the beneftis and potential advantages of water hydraulics over oil-based media. Interweaves examples and excercises throughout the text to illustrate critical concepts, with helpful appendices on abbreviations, symbols, conversion factors, and water contaminants, and glossary sections."

Report of Hydraulic Power Committee 1924

Report of Hydraulic Power Committee 1924 PDF Author: National Electric Light Association. Hydraulic Power Committee
Publisher:
ISBN:
Category : Hydraulic machinery
Languages : en
Pages : 162

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Book Description


Hydraulic Pumps and Motors

Hydraulic Pumps and Motors PDF Author: Raymond P. Lambeck
Publisher: CRC Press
ISBN: 9780824770143
Category : Science
Languages : en
Pages : 176

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Elevators, Hydraulic and Electric

Elevators, Hydraulic and Electric PDF Author: Calvin Franklin Swingle
Publisher:
ISBN:
Category : Elevators
Languages : en
Pages : 118

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Book Description


The Engineering Index

The Engineering Index PDF Author: John Butler Johnson
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 1060

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Book Description