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Hydraulic Battery
FPE Concept
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References and useful links consulted during development of the project:


Tatematsu Koztaka, Mizutami Ryosi and Endo Yasuhito, “Power Output Device of Hybrid Vehicle”, Toyota WO2007043760, 2007-04-19

Teslak Chris, Carlson Cliff, “Torque Control for Fluid Accumulator in Hybrid Vehicle Drivetrain” Ford, US7147078

Hofbauer Peter, Peng Lixsin, Tusinean Adrain, Fuqua Kevin; Free piston engine scavenging; Ford Global Tech llc GB2415747

Hofbauer Peter; Opposed Pinston Opposed Cylinder Free Piston Engine; Ford Global Tech llc EP1751428

Gray Charles L; Fully-controlled, free-piston engine; US2003044293

Achten Peter Augustinus Johann, Potma Theodorus Gerhardus; Method of Operating a Free-piston Engine; and Free-piston Engine Operating According to this Method; INNAS BV (NL) WO9310343

Achten Peter Augustinus Johann; Assembly for executing activities assisted by hydromotors; INNAS Free Piston BV NL1008256

Schaeffer Rudolf, Dantlgraber Joerg; Generic free-piston engine with transformer valve assembly for reducing throttling losses Free piston engine ; Mannesmann Rexroth AG; US6863507
Fenelon Thomas R; Clarke John M; Method for Operation of a Free Piston Engine; Caterpillar INC; WO0015954

Martti Larmi, Sten Isaksson, Seppo Tikkanen and Mika Lammila; Performance Simulation of a Compression Ignition Free Piston Engine SAE technical paper series 2001-01-0280

Ehab Shoukry, Samuel Taylor, Nigel Clark and Parviz Famouri; Numerical Simulation for Parametric Study of a Two-Stroke Direct Injection Linear Engine; SAE technical paper series 2002-01-1739

Paul Matheson and Jack Stecki; Development and Simulation of a Hydraulic-Hybrid Powertrain for use in Commercial Heavy Vehicles; SAE technical paper series 2003-01-3370

Robyn A. Jackey, Paul Smith and Steven Bloxham; Physical System Model of a Hydraulic Energy Storage Device for Hybrid Powertrain Applications; SAE technical paper series 2005-01-0810

Matthew Brusstar, Charles Gray, Jr., Kasser Jaffri, Patrick McCarthy and Marc Pomerleau; Design, Development and Testing of Multi-Cylinder Hydraulic Free-Piston Engines; SAE technical paper series 2005-01-1167

Csaba Tóth-Nagy, Nigel N. Clark; The Linear Engine in 2004; SAE technical paper series 2005-01-2140

Paul W. Bessonette, Charles H. Schleyer, Kevin P. Duffy, William L. Hardy and Michael P. Liechty; Effects of Fuel Property Changes on Heavy-Duty HCCI Combustion; SAE technical paper series 2007-01-0191

Peter K. Chiang; Two-Mode Urban Transit Hybrid Bus In-Use Fuel Economy Results from 20 Million Fleet Miles; SAE technical paper series 2007-01-0272

Norman H. Beachley and Frank J. Fronczak; Design of a Free-Piston Engine-Pump; SAE technical paper series 921740

Peter A. J. Achten; A Review of Free Piston Engine Concepts; SAE technical papers series 941776

Nigel N. Clark, Subhash Nandkumar and Parviz Famouri; Internal Combustion Engine; SAE technical papers series 982692

A.P.Kleemann, J.-C. Dabadie, S. Henriot; Computational Design Studies for a High-Efficiency and Low-Emissions Free Piston Engine Prototype; SAE technical papers series 2004-01-2928

Jakob Fredriksson and Ingemar Denbratt ; Simulation of a Two-Stroke Free Piston Engine; SAE technical papers series 2004-01-1871

Erland Max ; FPEC Free Piston Energy Converter; Volvo Technology Corp., Dept 6520 CTP, SB-412 88 Gothenburg, Sweden

J. Wang, M. West, D. Howe, H. Zelaya, W. M. Arshad; Design and Experimental Verification of a Linear Permanent Magnet Generator for a Free - Piston Energy Converter; Energy Conversion, IEEE Transaction on, Vol. 22, No. 2. (2007), pp. 299-306.


Charles L. Gray, Jr.; Hydraulic Hybrids - EPA Hybrid Truck Initiative

Charles L. Gray, Jr; Future Automotive Fuel Options/Implications, January 27, 2005

S. Scott Goldsborough and Peter Van Blarigan; Optimizing the Scavenging System for a Two-Stroke Cycle, Free Piston Engine for High Efficiency and Low Emissions: A Computational Approach; Sandia National Laboratories

Toyota Hybrid system THSII, Hybrid Synergy Drive (SpecialReports_12.pdf)

Toyota New Zealand; Toyota Hybrid System Operation;

Martyn Roberts; Benefits and Challenges of Variable Compression Ratio (VCR),
Prodrive Ltd

New engine design adjusts compression to meet driving conditions ; Variable Compression Ratio (VCR), Engine

Radial Piston Pumps (RKP): MOOG

Christoph Stiller; Design, Operation and Control Modelling of SOFC/GT Hybrid Systems Doctoral Theses at NTNU, 2006:28

Michael Anthony Prados ; Towards a linear engine, final thesis for B.Sc. degree

Tanja Heikkilä; Permanent Magnet Synchronous Motor for Industrial Inverter Applications – Analysis and Design

Bill Van Amburg; Status of Medium and Heavy Hybrids: Commercial Momentum & Directions

CETIM, David T. Reeves, NESA, Technical University Darmstadt; Study on Improving the Energy Efficiency of Pumps

Dimitrios Dardalis: Rotating Liner Engine A New Approach to Reduce Engine Friction and Increase Fuel Economy in Heavy Duty Engines

Jussi Puranen ; Induction Motor versus Permanent Magnet Synchronous Motor in Motion Control Applications : A Comparative Study

Sylvain Lemofouet, Alfred Rufer ; Hybrid Energy Storage System based on Compressed Air and Super Capacitors with MEPT (Maximum Efficiency Point Tracking)

Tor A. Johansen, Olav Egeland, Erling Aa. Johannessen and Rolf Kvamsdal; Dynamics and Control of a Free-Piston Diesel Engine

John J. Kargul AFFORDABLE Advanced Technologies

Edward Nam ; Advanced Technology Vehicle Modeling in PERE

Jörgen Hansson, Mats Leksell, Fredrik Carlsson and Chandur Sadarangani; Operational Strategies for a Free Piston Energy Converter

Jörgen Hansson, Mats Leksell, Fredrik Carlsson; Minimizing Power Pulsations in a Free Piston Energy Converter

Jörgen Hansson and Mats Leksell ; Performance of a Series Hybrid Electric Vehicle
with a Free-Piston Energy Converter

S. Scott Goldsborough and Peter Van Blarigan; Optimizing the Scavenging System for a Two-Stroke Cycle, Free Piston Engine for High Efficiency and Low Emissions: A Computational Approach

W. Hofmann, P. Tenberge ; Design and Control of an Hybrid Transmission
with Electrical Power Splitting ;

B.C. Mecrow and A.G. Jack; Efficiency trends in electric machines and drives

A. Cosic, J. Lindbäck, W. M. Arshad, M. Leksell, P. Thelin, E. Nordlund; Application of a Free-Piston Generator in a Series Hybrid Vehicle

Ping Zheng, Anyuan Chen, Peter Thelin, Waqas M. Arshad, Chandur Sadarangani; Research on a Tubular Longitudinal Flux PM Linear Generator Used for Free-Piston Energy Converter

Tsu-Chin Tsao, Chun Tai, Andy Stubbs, Alan Hanson, Anna Stephanopoulou; Electrohydraulic Valvetrains for Direct Injection Compression Ignition Carnless Engine Operations

Peter Van Blarigan ; Advanced Internal Combustion Engine Research

Peter Van Blarigan ; Homogeneous Charge Compression Ignition With a Free Piston: a New Approach to Ideal Otto Cycle Performance

Douglas Carter and Edward Wechner ; The Free Piston Power Pack: Sustainable Power for Hybrid Electric Vehicles

World’s First Full Hydraulic Hybrid SUV; Presented at 2004 SAE World Congress

George Fenske, Robert Erck, Layo Ajayi, Ali Erdemir, and Osman Eryilmaz; Parasitic Energy Loss Mechanisms Impacton Vehicle System Efficiency Project 15171