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OTHER Free Piston Engine Uses

2021

Aero Engine Concepts Beyond 2030: Part 1 — The Steam Injecting and Recovering Aero Engine
https://asme-turboexpo.secure-platform.com/a/solicitations/105/sessiongallery/5459/application/45367
and
https://asmedigitalcollection.asme.org/GT/proceedings-abstract/GT2020/84140/V005T06A017/1094895

Aero Engine Concepts Beyond 2030: Part 2 - The Free-Piston Composite Cycle Engine
https://asme-turboexpo.secure-platform.com/a/solicitations/105/sessiongallery/5459/application/45368
and
https://www.researchgate.net/publication/345178667_Aero_Engine_Concepts_Beyond_2030_Part_2_-_The_Free-Piston_Composite_Cycle_Engine

Effect of the stroke-to-bore ratio on the performance of a dual-piston free piston engine generator.
https://www.sciencedirect.com/science/article/abs/pii/S1359431120339326

 

2020

 

High capture efficiency wave energy converter with improved heave, surge and pitch stability
https://patents.google.com/patent/US10788010

 

2015

 

Libertine LPE free piston technology targeting power generation, waste-heat recovery and range-extended EV applications; feasibility study with PETRONAS
http://www.greencarcongress.com/2015/02/20150219-libertine.html

Free piston engine using exhaust gas for providing increased thrust to an aircraft turbine engine.
https://patents.google.com/patent/US9062601

 

2014

 

Ultra-efficient hydraulic hybrid drivetrain and method of operation
http://www.google.com/patents/US8646558

 

2012

 

The High Performance Toroidal Engine Concept (HiPerTEC)
http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1627452

Two-stroke HCCI compound free-piston/gas-turbine engine
http://www.google.com/patents/US8127544

 

2010

 

Process to obtain thermal and kinetic energy from a geothermal heat source using supercritical CO2 – GreenFire Partners
http://www.google.com/patents/US20110100002

 

2009

 

Miniature HCCI Free-Piston Engine Compressor For Orthosis Application
http://papers.sae.org/2009-32-0176/

 

2008

 

Rotary Shaft Power Extraction From a Free-Piston Engine
http://www1.eere.energy.gov/vehiclesandfuels/pdfs/deer_2008/poster3/deer08_fitzgerald.pdf

Modeling and Control of the Free Liquid-Piston Engine Compressor   Poster 2008
NSF Site Visit for the Center for Compact and Efficient Fluid Power (CCEFP), February 20, 2008,
University of Minnesota, Minneapolis, MN.
http://www.vanderbilt.edu/dces/PDF/Posters/2B%20modeling%20control%20poster%20feb%2008.pdf

Free Liquid-Piston Engine Compressor with Separated Combustion Chamber   Poster
NSF Site Visit for the Center for Compact and Efficient Fluid Power (CCEFP), February 20, 2008,
University of Minnesota, Minneapolis, MN.
http://www.vanderbilt.edu/dces/PDF/Posters/2B%20design%20poster%20feb%2008.pdf

Dynamic mass transfer rapid response power conversion system – Raytheon Sarcos
http://www.google.com/patents/US7363887

Free piston vacuum producing apparatus
http://www.google.com/patents/US7467607

 

2007

 

Free Liquid-Piston Engine with External Combustion Camber   Poster
1st Annual Meeting for the Center for Compact and Efficient Fluid Power, Georgia Institute of Technology,
April 2007, Atlanta, GA.
http://www.vanderbilt.edu/dces/PDF/Posters/2B%20poster%20apr%2007.pdf

The Hydrid Transmission
http://papers.sae.org/2007-01-4152/

 

2006

 

Apparatus for determining free piston position and an apparatus for controlling free piston position – Global Cooling
http://www.google.com/patents/US7075292

Two-stroke internal combustion engine with free opposed pistons – FEV
http://www.google.com/patents/US7047916

Apparatus for determining free piston position and an apparatus for controlling free piston position – Global Cooling
http://www.google.com/patents/US7075292

 

2005

 

Microgenerator of electrical energy – C.R.F. Societa Consortile per Azioni
http://www.google.com/patents/US6932030

 

Controllable combustion method and device - Mechanical Transducer – Sarcos Investments
http://www.google.com/patents/US6938588

 

2004

 

Piston assembly for use in a free piston internal combustion engine - Caterpillar Inc
http://www.google.com/patents/US6694930

Energy converter – Clavis Technology
http://www.google.com/patents/US6759755

 

2002

 

Uniflow scavenging microengine – US Air Force
http://www.google.com/patents/US6460493

Piston assembly for free piston internal combustion engine - Caterpillar Inc
http://www.google.com/patents/US6463903

Microcombustion engine/generator – Honeywell
http://www.google.com/patents/US6397793

Free piston engine and self-actuated fuel injector therefore
http://www.google.com/patents/US6431146

Free piston engine and self-actuated fuel injector
http://www.google.com/patents/US6349682

Piston Assembly For Free Piston Internal Combustion Engine - Caterpillar Inc.
http://www.google.com/patents/US6463903

 

2001

 

Microcombustion engine/generator – Honeywell
http://www.google.com/patents/US6276313

 

2000

 

Free piston internal combustion engine – Sunpower
http://www.google.com/patents/US6035637

 

1999

 

Power plant – Kvaerner ASA
http://www.google.com/patents/US5913290

 

1998

 

Free piston internal combustion engine – Sunpower
http://www.google.com/patents/US5775273

Electrically powered motor vehicle with linear electric generator
http://www.google.com/patents/US5788003

 

1997

 

Free piston internal combustion engine
http://www.google.com/patents/US5678522

 

1996

 

Development of a Hydrogen Fueled Internal Combustion Engine Designed for Single Speed/Power Operation
http://papers.sae.org/961690/

 

1995

 

Series Hybrid Vehicles and Optimized Hydrogen Engine Design
http://www.osti.gov/bridge/servlets/purl/104996-Wnv0bi/webviewable/104996.pdf

Linear electrodynamic machine - Clever Fellows Innovation Consortium
http://www.google.com/patents/US5389844

 

1994

 

Vehicular drive system using stored fluid power for improved efficiency
http://www.google.com/patents/US5327857

 

1992

 

Magnetic Bearings for Free-Piston Stirling Engines - NASA
http://papers.sae.org/929383/

HOTS to WATTS: The FPSE Linear Alternator System Re-Invented
http://papers.sae.org/929261/

Hybrid electric propulsion system
http://www.google.com/patents/US5172784

 

1984

Free piston internal combustion engine Turbine
http://www.google.com/patents/US4449488

1970

Tandem, free-piston machines
http://www.google.com/patents/US3501087

1967

 

FREE PISTON-PULSED TURBINE ENGINE
http://www.google.com/patents/US3359719

1959

FORD FREE-PISTON ENGINE DEVELOPMENT
http://papers.sae.org/590045/

1956

1956 General Motors XP 500 Free Piston Prototype
https://www.youtube.com/watch?v=Anbm8a-HT9s

 

 

1957

 

 Popular Science, September 1957, pp. 138-141/294, detailed article/cutaway drawing on free-piston diesel engines. "Engine of Tomorrow - Goes to Work Today."
http://bit.ly/1t4dyKC

Design and Application of Marine Free-Piston Gas Generators
http://bit.ly/1vJsoa2

THE GMR 4-4 “HYPREX” ENGINE A CONCEPT OF THE FREE-PISTON ENGINE FOR AUTOMOTIVE USE
http://papers.sae.org/570032/

 

1952

THE WORTHINGTON‐JUNKERS FREE PISTON AIR COMPRESSOR
Journal of the American Society of Naval Engineers 1952:64:583-594. Toutant W.T.
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1559-3584.1952.tb02985.x

The free piston gas generator: a verification of the Oppenheim-London design method
London A.L., Oppenheim A.K., The free-piston engine development - Present status and design aspects, Transactions of the ASME 1952:74:1349-1361.
https://archive.org/details/freepistongasgen00welg

 

1930

Internal combustion power plant
http://www.google.com/patents/US1785643