Design And Construction Of A Hydrostatic Dynamometer For Testing A Hydraulic Hybrid Vehicle
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Design And Construction Of A Hydrostatic Dynamometer For Testing A Hydraulic Hybrid Vehicle
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Author : Henry Julian Kohring
language : en
Publisher:
Release Date : 2012
Design And Construction Of A Hydrostatic Dynamometer For Testing A Hydraulic Hybrid Vehicle written by Henry Julian Kohring and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Design And Implementation Of A Hydraulic Test Facility
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Author : Zachary C. Nielsen
language : en
Publisher:
Release Date : 2011
Design And Implementation Of A Hydraulic Test Facility written by Zachary C. Nielsen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Hybrid electric cars categories.
Hybrid vehicles improve fuel efficiency and reduce harmful emissions. Hybrid Hydraulic Vehicles (HHV) have the potential to double the efficiency of currently available hybrids. To improve the efficiency of hydraulic components used in a HHV, testing needs to be conducted in a laboratory environment. Testing of hydraulic components determine parameters critical to performance such as speeds, torque, fluid flow, and operating pressures. Efficiency maps are generated. Durability of components is evaluated through endurance testing. Operational limits are established for both components and systems. Simulated operating cycles determine the effects on pump/motor (P/M) and other hydraulic devices in the system. Side effects of operating a hydraulic system such as noise, vibration, and heat are determined. Manufacturer data can be validated and data unavailable from manufacturers can be established. In this thesis, the design and construction of a hydraulic test facility to perform this testing will be detailed. Safety precautions and testing procedures will also be discussed. The laboratory is capable of testing hydraulic pumps and motors up to 5,000 PSI. Data can be collected on inlet and outlet pressure, inlet and outlet flow rates, fluid temperature, torque, and speed. All test cells can be configured for both pump mode (powered by electric motor) and motor mode (power absorbed by electric dynamometer).
Design Of Hydrostatic Dynamometers For The Dynamic Testing Of Drivetrain Components
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Author : Thomas Francis Rolewicz
language : en
Publisher:
Release Date : 1987
Design Of Hydrostatic Dynamometers For The Dynamic Testing Of Drivetrain Components written by Thomas Francis Rolewicz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Design And Construction Of A High Bandwidth Dynamometer With Absorbing And Motoring Capability
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Author : Steven P. Seaney
language : en
Publisher:
Release Date : 1994
Design And Construction Of A High Bandwidth Dynamometer With Absorbing And Motoring Capability written by Steven P. Seaney and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
Design And Construction Of A High Bandwidth Hydrostatic Dynamometer
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Author : J. C. Longstreth
language : en
Publisher:
Release Date : 1993
Design And Construction Of A High Bandwidth Hydrostatic Dynamometer written by J. C. Longstreth and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Automobiles categories.
Advanced Hybrid Powertrains For Commercial Vehicles
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Author : Haoran Hu
language : en
Publisher: SAE International
Release Date : 2021-04-14
Advanced Hybrid Powertrains For Commercial Vehicles written by Haoran Hu and has been published by SAE International this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-14 with Technology & Engineering categories.
Powertrains for commercial vehicles have evolved since the late nineteenth-century invention of the ICE. In the revised second edition of Advanced Hybrid Powertrains for Commercial Vehicles, the authors explore commercial powertrains through history from the ICE through the introduction of the hybrid powertrain in commercial vehicles. Readers are given an understanding of the ICE as well as the classification of commercial vehicle hybrid powertrains, the variety of energy storage systems, fuel-cell hybrid powertrain systems, and commercial vehicle electrification. The authors review the legislation of vehicle emissions and the regulation necessary to promote the production of fuel-efficient vehicles.
Design And Construction Of Controls For A High Bandwidth Hydrostatic Dynamometer
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Author : Jon Charles Longstreth
language : en
Publisher:
Release Date : 1994
Design And Construction Of Controls For A High Bandwidth Hydrostatic Dynamometer written by Jon Charles Longstreth and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
Control Aspects Of Complex Hydromechanical Transmissions
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Author : L. Viktor Larsson
language : en
Publisher: Linköping University Electronic Press
Release Date : 2017-08-17
Control Aspects Of Complex Hydromechanical Transmissions written by L. Viktor Larsson and has been published by Linköping University Electronic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-17 with categories.
This thesis deals with control aspects of complex hydromechanical transmissions. The overall purpose is to increase the knowledge of important aspects to consider during the development of hydromechanical transmissions to ensure transmission functionality. These include ways of evaluating control strategies in early design stages as well as dynamic properties and control aspects of displacement controllers, which are key components in these systems. Fuel prices and environmental concerns are factors that drive research on propulsion in heavy construction machinery. Hydromechanical transmissions are strong competitors to conventional torque-converter transmissions used in this application today. They offer high efficiency and wide speed/torque conversion ranges, and may easily be converted to hybrids that allow further fuel savings through energy recuperation. One challenge with hydromechanical transmissions is that they offer many different configurations, which in turn makes it important to enable evaluation of control aspects in early design stages. In this thesis, hardware-in-the-loop simulations, which blend hardware tests and standard software-based simulations, are considered to be a suitable method. A multiple-mode transmission applied to a mid-sized construction machine is modelled and evaluated in offline simulations as well as in hardware-in-the-loopsimulations. Hydromechanical transmissions rely on efficient variable pumps/motors with fast, accurate displacement controllers. This thesis studies the dynamic behaviour of the displacement controller in swash-plate axial-piston pumps/motors. A novel control approach in which the displacement is measured with an external sensor is proposed. Performance and limitations of the approach are tested in simulations and in experiments. The experiments showed a significantly improved performance with a controller that is slightly more advanced than a standard proportional controller. The implementation of the controller allows simple tuning and good predictability of the displacement response.
The Design And Development Of A Hydraulic Absorption Dynamometer Adaptable To Automobile Engine Testing
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Author : Frederick Sawtelle Jones
language : en
Publisher:
Release Date : 1949
The Design And Development Of A Hydraulic Absorption Dynamometer Adaptable To Automobile Engine Testing written by Frederick Sawtelle Jones and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1949 with Dynamometer categories.
Design And Control Of The Ancillary System For Hydraulic Hybrid Vehicle Hhv
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Author : Mohamed E. Abdelgayed
language : en
Publisher:
Release Date : 2010
Design And Control Of The Ancillary System For Hydraulic Hybrid Vehicle Hhv written by Mohamed E. Abdelgayed and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Hybrid electric vehicles categories.
The hybrid hydraulic vehicle (HHV) is a new technology that uses hydraulic power in conjunction with the conventional vehicle internal combustion engine (ICE) in order to improve fuel economy for road vehicles propulsion. In addition to propulsion, a portion of the hydraulic power can be used to drive hydraulic accessories, through a power take-off point. A power take-off method with HHV decreases the cost of implementation on the vehicle as the main power source is readily available. The transferred power, with the appropriate interface using controlled hydraulic circuit, drives the accessories system. This research preliminary analysis investigates three proposed systems: hydraulic intensifier, hydraulic transformer, and pump/motor configuration or hydrostatic system. The research studies the systems efficiencies and the impact of these systems on the main hydraulic circuit. The impact is measured by the system ability to isolate the hydraulic accessories fluid from the main circuit fluid in order to maintain the main circuit performance. The hydraulic intensifier and the hydraulic transformer do not isolate the main source fluid from the load fluid effectively. The estimated efficiency is around 55% for the hydraulic intensifier while it is around 90% for the hydraulic transformer. Accordingly, both of them are not suitable for the application. A hydrostatic transmission or the pump/motor configuration provides complete isolation as the load fluid is separated from the source fluid. In addition efficiency expected to be in range of 80% to 90%. Consequently, the hydrostatic transmission system design is used in this application. A comprehensive analysis is performed on the hydrostatic transmission. The analysis starts by defining two pressure working ranges from hydraulic tools manufacturer's datasheets; the low pressure at 2,000 psi and the high pressure at 10,000 psi. After selection of loading pressure, the design of the driving pumps, and hydraulic motor with the control valve is performed. The analysis includes controller design to the system in order to maintain the load demand. The hydrostatic transmission system design is modeled and then simulated using MATLAB/SIMULINK. The model simulation incorporates several loading cases in order to define the time required to drive the hydraulic accessories efficiently. The model result reports the maximum operating time and the input power consumption rate for each load case. The input power consumption rates and the assumed efficiencies are verified by comparing to the manufacturer's datasheet values and to the model output efficiencies. Conclusions and recommendations are provided at the end of this research.