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Free Piston Compressor

2021

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

Performance Evaluation of an Electromagnetic Free Piston Compressor Without Permanent Magnets
https://ieeexplore.ieee.org/document/9005236

 

2020

2019

Performance Measurement of an Electromagnetic Free Piston Compressor without Permanent Magnets
https://ieeexplore.ieee.org/document/8771018

 

2018

Free Piston Compressor with a Variable Volume Ratio: Insights on Modeling Approach and Control Strategy
https://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=3565&context=icec

Methods and systems for free piston engine control
https://patents.google.com/patent/US20130298874A1/en

 

2017

Reciprocating integral linear engine compressor
https://patents.google.com/patent/US9957958

 

2016

Miniature Free Piston Engine Compressor
http://erc-assoc.org/content/miniature-free-piston-engine-compressor

 

2014

Free Piston Engine Compressor 2B.1
http://www.ccefp.org/research/thrust-2-compactness/project-2b1

Minature HCCI Free Piston Engine Compressor 2B.2
http://www.ccefp.org/research/thrust-2-compactness/miniature-hcci-free-piston-engine-compressor

 

2013

Researchers develop high inertance liquid piston engine compressor
http://www.google.com/patents/US8449270

Miniature homogeneous charge compression ignition free-piston engine compressor
http://gradworks.umi.com/35/89/3589193.html

Dynamic modeling of a SI/HCCI free-piston engine generator with electric mechanical valves
http://econpapers.repec.org/article/eeeappene/v_3a102_3ay_3a2013_3ai_3ac_3ap_3a336-346.htm

EGR constructions for opposed-piston engines - Achates Power, Inc
http://www.google.com/patents/US8549854

The High Inertance Free Piston Engine Compressor—Part I: Dynamic Modeling
http://dynamicsystems.asmedigitalcollection.asme.org/article.aspx?articleid=1682750

The High Inertance Free Piston Engine Compressor—Part II: Design and Experimental Evaluation
http://dynamicsystems.asmedigitalcollection.asme.org/article.aspx?articleid=1682053#

Hydraulic powertrain system
http://www.google.com/patents/US8449270

 

2012

 

A miniature free-piston engine/compressor
http://www.me.umn.edu/~wkdurfee/publications/engine-compressor-IJER-2012.pdf

Free-piston Engine Compressor
http://www.ccefp.org/research/thrust-2-compactness/project-2b1

Miniature HCCI Free-piston Engine Compressor
http://www.ccefp.org/research/thrust-2-compactness/project-2b2

A miniature free-piston engine/compressor
http://www.me.umn.edu/~wkdurfee/publications/engine-compressor-IJER-2012.pdf

Free-piston engine having variable stroke and method for operating a free-piston engine – Universal Motor Corp
http://www.google.com/patents/WO2010046120A1?cl=en

 

2011

Project 2B.1: Free Piston Engine Compressor  DATE ? 2011
http://www.ccefp.org/sites/all/files/documents/Info_2B.1_Free_Piston_Eng_Comp.pdf

 

2009

 

Coupled dynamic–multidimensional modelling of free-piston engine Combustion
http://www.mikalsen.eu/papers/FPEcoupledSolver.pdf

Reducing Piston Mass in a Free Piston Engine Compressor by Exploiting the Inertance of a Liquid Piston
http://www.vanderbilt.edu/dces/PDF/papers/conference/DSCC2009_HI-FLPC_paper.pdf

MODELING AND CONTROL OF A HIGH PRESSURE COMBINED AIR/FUEL INJECTION SYSTEM
http://www.vanderbilt.edu/dces/PDF/papers/conference/DSCC2009_high_pressure_af_control.pdf

Free-Piston Engine Compressor   Poster  2009
NSF Site Visit for the Center for Compact and Efficient Fluid Power (CCEFP), April 28-30, 2009,
University of Minnesota, Minneapolis, MN.
http://www.vanderbilt.edu/dces/PDF/Posters/2B1%20Poster%2009%20nsf%20site%20visit.pdf

 

Combustion-powered linear air motor/compressor
http://www.google.com/patents/US7634979

 

2008

 

Developing a 10cc Single-Valve, Reverse Uniflow, 2S Engine
http://www.sae.org/technical/papers/2008-01-0953

Experimental Assessment of a Free Elastic-Piston Engine Compressor with Separated Combustion Chamber
http://www.vanderbilt.edu/dces/PDF/papers/conference/bath08_Riofrio_Barth.pdf

Modeling and Control of a Free Liquid-Piston Engine Compressor
http://www.vanderbilt.edu/dces/PDF/papers/conference/Bath08_Yong_Barth_Riofrio.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

Internal combustion engine – Advanced Propulsion Technologies
https://www.google.com/patents/US7383796

 

2007

 

Design and Analysis of a Resonating Free Liquid-Piston Engine Compressor
http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1599051

Free Liquid-Piston Engine Compressor with External Combustion Chamber
http://www.vanderbilt.edu/dces/PDF/Posters/2B%20poster%20apr%2007.pdf

A FREE PISTON COMPRESSOR AS A PNEUMATIC MOBILE ROBOT POWER
SUPPLY: DESIGN, CHARACTERIZATION AND EXPERIMENTAL OPERATION
http://www.vanderbilt.edu/dces/PDF/papers/journal/Riofrio%20Barth%20FPC%20Int%20J%20of%20Fluid%20Power.pdf

Internal combustion engine – Advanced Propulsion Technologies
https://www.google.com/patents/US7255070

Internal combustion engine – Advanced Propulsion Technologies
https://www.google.com/patents/US7207299

Four-cylinder, four-cycle, free piston, premixed charge compression ignition, internal combustion reciprocating piston
engine with a variable piston stroke
http://www.google.com/patents/US7258086

 

2006

 

Free-Piston Compressor for Portable Fluid Power Systems   Poster
NSF Site Visit for the Center for Compact and Efficient Fluid Power, University of Minnesota, October 2006,
Minneapolis, MN.
http://www.vanderbilt.edu/dces/PDF/Posters/VU%20ERC%20poster%202B%20Oct%2006.pdf

Valve system for a rapid response power conversion device – Sarcos Investments
http://www.google.com/patents/US7066116

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

 

2005

 

EXPERIMENTAL OPERATION AND CHARACTERIZATION
OF A FREE PISTON COMPRESSOR
http://www.vanderbilt.edu/dces/PDF/papers/conference/IMECE2005_fpc_final.pdf

Free-Piston Compressor for Portable Fluid Power Systems   Poster
NSF Proposal Site Visit for the Center for Compact and Efficient Fluid Power, University of Minnesota,
November 2005, Minneapolis, MN.
http://www.vanderbilt.edu/dces/PDF/Posters/VU%20ERC%20poster%20Jose%20Riofrio%2005.pdf

Design of a Free Piston Pneumatic Compressor as a Mobile Robot Power Supply
http://www.vanderbilt.edu/dces/PDF/papers/conference/icra05_fpc_published.pdf

Compression pulse starting of a free piston internal combustion engine - Ford
http://www.google.com/patents/US6971340

Electromagnetic servo valve strategy for controlling a free piston engine - Ford
http://www.google.com/patents/US6971339

Compression pulse starting of a free piston internal combustion engine having multiple cylinders - Ford
http://www.google.com/patents/US6966280

 

2004

 

Dynamic Characteristics of a Free Piston Compressor
http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1652558

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

 

2003

 

DESIGN, CONSTRUCTION, AND EXPERIMENTAL EVALUATION OF A MONOPROPELLANT
POWERED FREE PISTON HYDRAULIC PUMP
http://bit.ly/1CS2SzE

Fully-controlled, free-piston engine – US EPA
http://www.google.com/patents/US6652247

Fully-controlled, free-piston engine – US EPA
http://www.google.com/patents/US6582204

Cyclically operated fluid displacement machine –Lotus Cars
http://www.google.com/patents/US6626650

 

2001

 

The control of an opposed hydraulic free piston engine
http://econpapers.repec.org/article/eeeappene/v_3a126_3ay_3a2014_3ai_3ac_3ap_3a213-220.htm

Free piston internal combustion engine – Sunpower
http://www.google.com/patents/US6170442

 

2000

 

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

Method for operation of a free piston engine
http://www.google.com/patents/US6135069

Free piston internal combustion engine with rotating piston
http://www.google.com/patents/US6105541

Injector System for free-piston engines
http://www.google.com/patents/US6050244

 

1998

 

Free-piston engine - Innas Free Piston
http://www.google.com/patents/US5829393

 

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

 

1995

 

FREE PISTON ENGINE COMPRESSOR
http://www.stormingmedia.us/25/2543/A254392.html?searchTerms=free~piston

 

1994

 

Free piston engine control system – Tectonics
http://www.google.com/patents/US5287827

 

1992

 

Circuit for controlling a free-piston engine in particular of a refrigerator compressor - Whirlpool
http://www.google.com/patents/US5079924

 

1989

 

Internal combustion engine
http://www.google.com/patents/US4831972

Internal combustion engine, particularly, a free-piston engine
http://www.google.com/patents/US4803960

 

1988

 

Free-piston motor with hydraulic or pneumatic energy transmission - De Rotterdamsche
http://www.google.com/patents/US4791786

 

1987

 

Bounce chambers for multi-cylinder linear engine compressors
http://www.google.com/patents/US4705460

 

1979

 

Method and device for ensuring the safety in a free piston machine
http://www.google.com/patents/US4142485

 

1978

 

Free piston engine with opposed cylinders
http://www.google.com/patents/US4085711

 

1973

 

The Braun Linear Engine
http://papers.sae.org/730185/

FREE PISTON ENGINE STARTING APPARATUS
http://www.google.com/patents/US3769950

 

1972

 

Free piston engine ignition apparatus
http://www.google.com/patents/US3643638

 

1970

 

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

1959

 

Power sources
http://www.google.com/patents/US2900592

1938

Freikolbenmotor um 1938 mit Federstarter. Free piston engine with spring starter, around 1938
https://www.youtube.com/watch?v=bsh7dSOxjuE

1928

Motor-compressor apparatus
http://www.google.com/patents/US1657641

Linear engine for compressor and compressor provided with a linear engine
http://www.google.com/patents/US20140241916