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Dive into the research topics where Niall James Caldwell is active.

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Featured researches published by Niall James Caldwell.


Proceedings of SPIE, the International Society for Optical Engineering | 2005

Modeling Hydraulic Regenerative Hybrid Vehicles Using AMESim and Matlab/Simulink

Alfred Lynn; Edzko Smid; Moji Eshraghi; Niall James Caldwell; Dan Woody

This paper presents the overview of the simulation modeling of a hydraulic system with regenerative braking used to improve vehicle emissions and fuel economy. Two simulation software packages were used together to enhance the simulation capability for fuel economy results and development of vehicle and hybrid control strategy. AMESim, a hydraulic simulation software package modeled the complex hydraulic circuit and component hardware and was interlinked with a Matlab/Simulink model of the vehicle, engine and the control strategy required to operate the vehicle and the hydraulic hybrid system through various North American and European drive cycles.


Archive | 2003

Fluid-working machine and operating method

Uwe Bernhard Pascal Stein; Niall James Caldwell; William Hugh Salvin Rampen; Jonathan Paul Almond


Archive | 2007

DIGITAL HYDRAULIC PUMP/MOTOR TORQUE MODULATION SYSTEM AND APPARATUS

William Hugh Salvin Rampen; Uwe Bernhard Pascal Stein; Michael Richard Fielding; Niall James Caldwell


Archive | 2011

Fluid-working machine and method of operating a fluid-working machine

William Hugh Salvin Rampen; Niall James Caldwell; Michael Richard Fielding; Stephen Laird; Uwe Bernhard Pascal Stein; John Tearlach Campbell


Archive | 2007

FLUID POWER DISTRIBUTION AND CONTROL SYSTEM

William Hugh Salvin Rampen; Niall James Caldwell; Uwe Bernhard Pascall Stein; Pierre Robert Joly; Michael Richard Fielding


Archive | 2011

Method and apparatus for extracting energy from a fluctuating energy flow from a renewable energy source

Niall James Caldwell; Daniil Sergeevich Dumnov; Michael Richard Fielding


Archive | 2009

Fluid working machines and methods

Uwe Bernhard Pascal Stein; Niall James Caldwell


Archive | 2005

Fluid-working machine with displacement control

Niall James Caldwell; William Hugh Salvin Rampen; Uwe Bernhard Pascal Stein


6th European Wave and Tidal Energy Conference | 2005

Potential of digital displacement hydraulics for wave energy conversion

Gregory Payne; Uwe Bernhard Pascal Stein; M. Ehsan; Niall James Caldwell; William Hugh Salvin Rampen


Archive | 2007

COOLING SYSTEM AND A TRANSMISSION SYSTEM HAVING SAID COOLING SYSTEM INTEGRATED THEREWITH

William Hugh Salvin Rampen; Niall James Caldwell; Uwe Bernhard Pascall Stein

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Daniil Dumnov

Mitsubishi Heavy Industries

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Kazuhisa Tsutsumi

Mitsubishi Heavy Industries

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Masayuki Shimizu

Mitsubishi Heavy Industries

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Venkata Pappala

Mitsubishi Heavy Industries

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