GB1096655A - Gaseous lubrication, sealing and centring of pistons - Google Patents

Gaseous lubrication, sealing and centring of pistons

Info

Publication number
GB1096655A
GB1096655A GB3626665A GB3626665A GB1096655A GB 1096655 A GB1096655 A GB 1096655A GB 3626665 A GB3626665 A GB 3626665A GB 3626665 A GB3626665 A GB 3626665A GB 1096655 A GB1096655 A GB 1096655A
Authority
GB
United Kingdom
Prior art keywords
piston
valve
cam
labyrinths
centring
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
GB3626665A
Inventor
John Albert Bennett
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.)
Ruston and Hornsby Ltd
Original Assignee
Ruston and Hornsby Ltd
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 Ruston and Hornsby Ltd filed Critical Ruston and Hornsby Ltd
Priority to GB3626665A priority Critical patent/GB1096655A/en
Publication of GB1096655A publication Critical patent/GB1096655A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16J1/09—Pistons; Trunk pistons; Plungers with means for guiding fluids
    • 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
    • F16J1/02—Bearing surfaces
    • 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
    • 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
    • F16J15/00—Sealings
    • F16J15/44—Free-space packings
    • F16J15/443—Free-space packings provided with discharge channels

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

1,096,655. Pistons. RUSTON & HORNSBY Ltd. Oct. 5, 1966 [Aug. 24, 1965], No. 36266/65. Heading F2T. In an I.C. engine or other piston machine, the piston centring and sealing means comprises labyrinths 16, 17, 18, an admission valve 32 for admitting gas to a chamber 21 at predetermined times and by means independent of the gas pressure upon the valve, passages 22-25 leading from the chamber to the exterior of the piston and containing non- return valves 26-29, and at least two exterior ribs disposed parallel to the piston axis. The valve-gear shown is suitable for a four-stroke cycle, the valve stem 34 being provided with a rotatable recessed disc 38 which lifts on alternate movements to the right of a cam 36 attached to the end of connecting rod 13; to prevent lift of the valve during movement of the cam to the left, the disc 38 is arranged to move along a slotted arm 46 against the action of springs. If desired, the valve may be lifted instead by a cam on a crankshaft web acting through a push-rod, or the valve may be lifted by a solenoid energized through slip rings. The piston may be circular, square or of rectangular cross-section as illustrated in Fig. 3 (not shown), the ribs (55) preferably extending the full axial length of the piston and having outer surfaces made of bearing material. The piston may be made of ceramics or cermets. The labyrinths may be formed of circumferential or helical grooves.
GB3626665A 1965-08-24 1965-08-24 Gaseous lubrication, sealing and centring of pistons Expired GB1096655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3626665A GB1096655A (en) 1965-08-24 1965-08-24 Gaseous lubrication, sealing and centring of pistons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3626665A GB1096655A (en) 1965-08-24 1965-08-24 Gaseous lubrication, sealing and centring of pistons

Publications (1)

Publication Number Publication Date
GB1096655A true GB1096655A (en) 1967-12-29

Family

ID=10386533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3626665A Expired GB1096655A (en) 1965-08-24 1965-08-24 Gaseous lubrication, sealing and centring of pistons

Country Status (1)

Country Link
GB (1) GB1096655A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0330326A2 (en) * 1988-02-23 1989-08-30 Ford Motor Company Limited Uncooled oilless internal combustion engine having uniform gas squeeze film lubrication
WO1990013763A1 (en) * 1989-05-06 1990-11-15 Cosworth Engineering Limited Piston
FR2660699A1 (en) * 1990-04-10 1991-10-11 Man B & W Diesel Ag ALTERNATIVE PISTON FOR INTERNAL COMBUSTION ENGINE.
US5267505A (en) * 1989-05-06 1993-12-07 Vickers Plc Piston
GB2357121A (en) * 1997-05-23 2001-06-13 Sustainable Engine Systems Ltd Piston in Stirling cycle machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0330326A2 (en) * 1988-02-23 1989-08-30 Ford Motor Company Limited Uncooled oilless internal combustion engine having uniform gas squeeze film lubrication
EP0330326A3 (en) * 1988-02-23 1990-01-31 Ford Motor Company Limited Uncooled oilless internal combustion engine having uniform gas squeeze film lubrication
WO1990013763A1 (en) * 1989-05-06 1990-11-15 Cosworth Engineering Limited Piston
GB2242252A (en) * 1989-05-06 1991-09-25 Cosworth Eng Piston
GB2242252B (en) * 1989-05-06 1993-10-20 Cosworth Eng Piston
US5267505A (en) * 1989-05-06 1993-12-07 Vickers Plc Piston
FR2660699A1 (en) * 1990-04-10 1991-10-11 Man B & W Diesel Ag ALTERNATIVE PISTON FOR INTERNAL COMBUSTION ENGINE.
GB2357121A (en) * 1997-05-23 2001-06-13 Sustainable Engine Systems Ltd Piston in Stirling cycle machine
GB2357121B (en) * 1997-05-23 2001-09-12 Sustainable Engine Systems Ltd Stirling cycle machine

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