GB678084A - Improvements in or relating to internal combustion engines - Google Patents

Improvements in or relating to internal combustion engines

Info

Publication number
GB678084A
GB678084A GB101449A GB101449A GB678084A GB 678084 A GB678084 A GB 678084A GB 101449 A GB101449 A GB 101449A GB 101449 A GB101449 A GB 101449A GB 678084 A GB678084 A GB 678084A
Authority
GB
United Kingdom
Prior art keywords
piston
groove
grooves
exhaust port
exposed
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
GB101449A
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.)
EDWARD STUART PRESTWICH
Original Assignee
EDWARD STUART PRESTWICH
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 EDWARD STUART PRESTWICH filed Critical EDWARD STUART PRESTWICH
Priority to GB101449A priority Critical patent/GB678084A/en
Publication of GB678084A publication Critical patent/GB678084A/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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/18—Other cylinders
    • F02F1/22—Other cylinders characterised by having ports in cylinder wall for scavenging or charging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/18—Other cylinders
    • F02F1/20—Other cylinders characterised by 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/22—Side valves

Landscapes

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

Abstract

678,084. Engine cylinders. PRESTWICH, J. A., and PRESTWICH, E. S. Jan. 5, 1950 [Jan. 13, 1949], No. 1014/49. Drawings to Specification. Class 122(i) A cylinder or liner for an i.c. engine is provided with at least one shallow and narrow lubricating groove therein, helically directed, said groove being so dimensioned and disposed that the compression ring assembly on the piston functions normally under normal working conditions, lubrication being controlled by positioning the upper end of said groove short of the highest point reached by the piston but so as to be exposed by the piston on the explosion stroke whereby the pressure in the cylinder is utilized to urge the oil down the groove, which in the case of a ported cylinder avoids at least the exhaust port. The groove may be exposed by the'piston before the exhaust port opens and extend at least from the lowest point reached by the piston and be exposed simultaneously above and below the piston. The Specification describes a single continuous helical groove, with or without additional grooves in its upper part to provide additional openings to the combustion chamber before the exhaust port opens; two or four spaced helical grooves; short helical grooves to form two continuous grooves and two oppositely directed helical grooves.
GB101449A 1949-01-13 1949-01-13 Improvements in or relating to internal combustion engines Expired GB678084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB101449A GB678084A (en) 1949-01-13 1949-01-13 Improvements in or relating to internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB101449A GB678084A (en) 1949-01-13 1949-01-13 Improvements in or relating to internal combustion engines

Publications (1)

Publication Number Publication Date
GB678084A true GB678084A (en) 1952-08-27

Family

ID=9714634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB101449A Expired GB678084A (en) 1949-01-13 1949-01-13 Improvements in or relating to internal combustion engines

Country Status (1)

Country Link
GB (1) GB678084A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746446A (en) * 1952-07-28 1956-05-22 Krauss Maffei A G Fa Means for preventing the flow of lubricating oil into the exhaust ports of diesel engines
DE952306C (en) * 1952-07-29 1956-11-15 Krauss Maffei Ag Working cylinder for slot-controlled two-stroke diesel engines
EP3201458A4 (en) * 2014-09-29 2018-06-06 Volvo Truck Corporation Reciprocating machine with cylinder having collector groove

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746446A (en) * 1952-07-28 1956-05-22 Krauss Maffei A G Fa Means for preventing the flow of lubricating oil into the exhaust ports of diesel engines
DE952306C (en) * 1952-07-29 1956-11-15 Krauss Maffei Ag Working cylinder for slot-controlled two-stroke diesel engines
EP3201458A4 (en) * 2014-09-29 2018-06-06 Volvo Truck Corporation Reciprocating machine with cylinder having collector groove
US11125223B2 (en) 2014-09-29 2021-09-21 Volvo Truck Corporation Reciprocating machine with cylinder having collector groove

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