GB943492A - Free piston engine - Google Patents

Free piston engine

Info

Publication number
GB943492A
GB943492A GB21748/60A GB2174860A GB943492A GB 943492 A GB943492 A GB 943492A GB 21748/60 A GB21748/60 A GB 21748/60A GB 2174860 A GB2174860 A GB 2174860A GB 943492 A GB943492 A GB 943492A
Authority
GB
United Kingdom
Prior art keywords
pistons
free piston
piston engine
june
nozzles
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB21748/60A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stewart Warner Corp
Original Assignee
Stewart Warner Corp
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 Stewart Warner Corp filed Critical Stewart Warner Corp
Publication of GB943492A publication Critical patent/GB943492A/en
Expired legal-status Critical Current

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
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0079—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having pistons with rotary and reciprocating motion, i.e. spinning pistons
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/08—Constructional features providing for lubrication
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Landscapes

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

Abstract

943,492. Pistons. STEWART-WARNER CORPORATION. June 21, 1960 [June 22, 1959], No. 21748/60. Heading F2T. [Also in Division F1] A free piston engine comprises a cylinder with a bore therein and a piston freely reciprocable and independently freely rotatable in the bore and means for rotating the piston. As shown, an internalcombustion operated free piston engine has opposed pistons 16 and recesses 52 are formed in the pistons. The pistons are rotated by compressed gas (e.g. air) supplied to nozzles 58. The compressed air for the nozzles 58 may be derived directly or indirectly from the chambers 20. Rapid continuous rotation of the pistons is ensured. The gas forms films between the pistons and the cylinder surface which will in effect lubricate this surface. It is not necessary to have means for providing oil lubrication of the surface. The engine may be operated at higher temperatures than would be permissible if oil were employed. The space between each end wall 46 and the corresponding ports 38 and 40 constitutes a bounce chamber 48. The pistons may be made of lightweight material and may be made hollow in construction. Suitable ceramics or lightweight alloys may be employed in the pistons. The compression and combustion chambers could be interchanged (see also Division F1).
GB21748/60A 1959-06-22 1960-06-21 Free piston engine Expired GB943492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US822037A US2995122A (en) 1959-06-22 1959-06-22 Free piston engine with rotating pistons

Publications (1)

Publication Number Publication Date
GB943492A true GB943492A (en) 1963-12-04

Family

ID=25234945

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21748/60A Expired GB943492A (en) 1959-06-22 1960-06-21 Free piston engine

Country Status (4)

Country Link
US (1) US2995122A (en)
CH (1) CH383683A (en)
DE (1) DE1401978A1 (en)
GB (1) GB943492A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2068093A5 (en) * 1969-11-27 1971-08-20 Commissariat Energie Atomique
US4412418A (en) * 1979-11-26 1983-11-01 Sunpower, Inc. Hydrodynamic lubrication system for piston devices particularly Stirling engines
US4330993A (en) * 1979-11-26 1982-05-25 Sunpower, Inc. Hydrodynamic lubrication system for piston devices particularly Stirling engines
US5144917A (en) * 1984-02-27 1992-09-08 Hammett Robert B Free-piston engine
US4920928A (en) * 1985-11-25 1990-05-01 Hammett Robert B Momentum engine
NL8503037A (en) * 1985-11-06 1987-06-01 Philips Nv DEVICE WITH A HYDRODYNAMICALLY BEARING PISTON.
US6105541A (en) * 1999-02-22 2000-08-22 Caterpillar, Inc. Free piston internal combustion engine with rotating piston
US6244226B1 (en) 1999-08-06 2001-06-12 Caterpillar Inc. Free piston internal combustion engine with rotating piston
US7798789B2 (en) * 2007-05-16 2010-09-21 Medtronic, Inc. Reducing cylinder wear in a drug pump

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2410565A (en) * 1943-01-26 1946-11-05 James B Brockhurst Engine
US2860619A (en) * 1956-10-18 1958-11-18 Ford Motor Co Variable injection dephasor
US2897803A (en) * 1956-12-10 1959-08-04 Int Harvester Co Reduced length free piston engine

Also Published As

Publication number Publication date
DE1401978A1 (en) 1968-12-12
CH383683A (en) 1964-10-31
US2995122A (en) 1961-08-08

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