SE548015C2 - Free piston linear engine and a method for operating a free piston linear engine - Google Patents

Free piston linear engine and a method for operating a free piston linear engine

Info

Publication number
SE548015C2
SE548015C2 SE2350463A SE2350463A SE548015C2 SE 548015 C2 SE548015 C2 SE 548015C2 SE 2350463 A SE2350463 A SE 2350463A SE 2350463 A SE2350463 A SE 2350463A SE 548015 C2 SE548015 C2 SE 548015C2
Authority
SE
Sweden
Prior art keywords
piston
free piston
working gas
combustion chamber
hollow
Prior art date
Application number
SE2350463A
Other versions
SE2350463A1 (en
Inventor
Kujtim Hyseni
Original Assignee
Kujtim Hyseni
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kujtim Hyseni filed Critical Kujtim Hyseni
Priority to SE2350463A priority Critical patent/SE548015C2/en
Priority to EP24793155.3A priority patent/EP4698763A1/en
Priority to PCT/SE2024/050379 priority patent/WO2024220022A1/en
Publication of SE2350463A1 publication Critical patent/SE2350463A1/en
Publication of SE548015C2 publication Critical patent/SE548015C2/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B71/00—Free-piston engines; Engines without rotary main shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B71/00—Free-piston engines; Engines without rotary main shaft
    • F02B71/04—Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B71/00—Free-piston engines; Engines without rotary main shaft
    • F02B71/04—Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby
    • F02B71/06—Free-piston combustion gas generators per se
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/28—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • F02B75/285—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders comprising a free auxiliary piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/025—Adding water
    • F02M25/03—Adding water into the cylinder or the pre-combustion chamber

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

The disclosure relates to a free piston linear engine (1), said engine (1) extending in an axial direction from a first end (101) to a second end (102) and comprising: a housing (2) with a main cylinder (10), a hollow main piston (20), a hollow auxiliary cylinder (30) and an auxiliary piston (40) all extending in said axial direction, said main piston (20) and auxiliary piston (40) being arranged to move independently of each other along said axial direction and within said housing (2); a combustion chamber (50) formed between the main piston (20) and the main cylinder (30), said combustion chamber (50) comprising a fuel inlet (51) and a combustion chamber outlet (53); a working gas chamber (80) formed between said hollow main piston (20) and said hollow auxiliary cylinder (30), said working gas chamber (80) defining a variable volume which is arranged to vary by moving the main piston (20) relative to the auxiliary cylinder (30); a cooling arrangement (70) arranged in the working gas chamber (80); and a regenerative heat exchanger (60) located in the working gas chamber (80) and being configured for allowing exhaust gases from said combustion chamber (50) to be guided through the regenerative heat exchanger (60) and to be used as a heating media.
SE2350463A 2023-04-18 2023-04-18 Free piston linear engine and a method for operating a free piston linear engine SE548015C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE2350463A SE548015C2 (en) 2023-04-18 2023-04-18 Free piston linear engine and a method for operating a free piston linear engine
EP24793155.3A EP4698763A1 (en) 2023-04-18 2024-04-18 Free piston engine and a method for operating a free piston engine
PCT/SE2024/050379 WO2024220022A1 (en) 2023-04-18 2024-04-18 Free piston engine and a method for operating a free piston engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2350463A SE548015C2 (en) 2023-04-18 2023-04-18 Free piston linear engine and a method for operating a free piston linear engine

Publications (2)

Publication Number Publication Date
SE2350463A1 SE2350463A1 (en) 2024-10-19
SE548015C2 true SE548015C2 (en) 2026-01-13

Family

ID=93153176

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2350463A SE548015C2 (en) 2023-04-18 2023-04-18 Free piston linear engine and a method for operating a free piston linear engine

Country Status (3)

Country Link
EP (1) EP4698763A1 (en)
SE (1) SE548015C2 (en)
WO (1) WO2024220022A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050081804A1 (en) * 2002-04-25 2005-04-21 Deutsches Zentrum Fur Luft- Und Raumfahrt E.V. Free-piston device with electric linear drive
US6957632B1 (en) * 2004-05-20 2005-10-25 Ford Global Technologies, Llc Air charging system for an opposed piston opposed cylinder free piston engine
US20120112468A1 (en) * 2010-11-04 2012-05-10 GM Global Technology Operations LLC Opposed free piston linear alternator
US20120112467A1 (en) * 2010-11-04 2012-05-10 GM Global Technology Operations LLC Free piston linear alternator utilizing opposed pistons with spring return
DE102010008226A1 (en) * 2010-02-09 2014-05-08 Vladimir Volchkov Free-piston engine i.e. Otto engine, has heat exchange chamber surrounding combustion chamber between walls of working cylinder and cylinder head, and inlet valve connected with combustion chamber, overflow channel or exchange chamber
US20140216411A1 (en) * 2013-02-07 2014-08-07 GM Global Technology Operations LLC Linear alternator assembly with four-stroke working cycle and vehicle having same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050081804A1 (en) * 2002-04-25 2005-04-21 Deutsches Zentrum Fur Luft- Und Raumfahrt E.V. Free-piston device with electric linear drive
US6957632B1 (en) * 2004-05-20 2005-10-25 Ford Global Technologies, Llc Air charging system for an opposed piston opposed cylinder free piston engine
DE102010008226A1 (en) * 2010-02-09 2014-05-08 Vladimir Volchkov Free-piston engine i.e. Otto engine, has heat exchange chamber surrounding combustion chamber between walls of working cylinder and cylinder head, and inlet valve connected with combustion chamber, overflow channel or exchange chamber
US20120112468A1 (en) * 2010-11-04 2012-05-10 GM Global Technology Operations LLC Opposed free piston linear alternator
US20120112467A1 (en) * 2010-11-04 2012-05-10 GM Global Technology Operations LLC Free piston linear alternator utilizing opposed pistons with spring return
US20140216411A1 (en) * 2013-02-07 2014-08-07 GM Global Technology Operations LLC Linear alternator assembly with four-stroke working cycle and vehicle having same

Also Published As

Publication number Publication date
WO2024220022A1 (en) 2024-10-24
EP4698763A1 (en) 2026-02-25
SE2350463A1 (en) 2024-10-19

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