GB2493571B - Uniflow port-less two-stroke engine - Google Patents

Uniflow port-less two-stroke engine

Info

Publication number
GB2493571B
GB2493571B GB1116751.7A GB201116751A GB2493571B GB 2493571 B GB2493571 B GB 2493571B GB 201116751 A GB201116751 A GB 201116751A GB 2493571 B GB2493571 B GB 2493571B
Authority
GB
United Kingdom
Prior art keywords
cylinder
engine
stroke engine
uniflow
port
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 - Fee Related
Application number
GB1116751.7A
Other versions
GB201116751D0 (en
GB2493571A (en
Inventor
Manousos Pattakos
Efthimios Pattakos
Paraskevi Pattakou
Emmanouel Pattakos
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority claimed from PCT/IB2011/053569 external-priority patent/WO2012020384A2/en
Publication of GB201116751D0 publication Critical patent/GB201116751D0/en
Publication of GB2493571A publication Critical patent/GB2493571A/en
Application granted granted Critical
Publication of GB2493571B publication Critical patent/GB2493571B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F01B7/00—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • F01B7/02—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons
    • F01B7/14—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons acting on different main shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/36—Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle
    • F01L1/38—Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle for engines with other than four-stroke cycle, e.g. with two-stroke cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L11/00—Valve arrangements in working piston or piston-rod
    • F01L11/02—Valve arrangements in working piston or piston-rod in piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • 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
    • F02B75/282—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders the pistons having equal strokes
    • 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
    • F02B75/32—Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
    • 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
    • F02F5/00—Piston rings, e.g. associated with piston crown
    • 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
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/12—Details
    • F16J9/20—Rings with special cross-section; Oil-scraping rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/02—Lubrication

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

A two-stroke internal combustion engine is disclosed which uses a four-stroke engine cylinder lubrication arrangement where the cylinder liner is provided with excess oil so that the cylinder is over lubricated and an oil scraper ring provided on a cylinder piston scrapes the excess oil back to the engine oil pan for reuse. The piston head may include at least one poppet valve for supplying air to the combustion chamber. This removes the need for intake and exhaust ports located in the cylinder liner.
GB1116751.7A 2011-08-10 2011-08-10 Uniflow port-less two-stroke engine Expired - Fee Related GB2493571B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2011/053569 WO2012020384A2 (en) 2010-08-10 2011-08-10 Reciprocating piston engine

Publications (3)

Publication Number Publication Date
GB201116751D0 GB201116751D0 (en) 2011-11-09
GB2493571A GB2493571A (en) 2013-02-13
GB2493571B true GB2493571B (en) 2013-09-04

Family

ID=44999999

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1116751.7A Expired - Fee Related GB2493571B (en) 2011-08-10 2011-08-10 Uniflow port-less two-stroke engine

Country Status (1)

Country Link
GB (1) GB2493571B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107355308B (en) * 2017-06-02 2019-03-22 中国北方发动机研究所(天津) A kind of piston structure of built-in valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0204669A2 (en) * 1985-06-04 1986-12-10 B-ART s.a.s. A lubrication system with oil recovery for a two-stroke engine piston with pump-sump for scavenging
DE19904002A1 (en) * 1999-02-02 2000-08-17 Udo Wagener Two-stroke internal combustion engine, with closed crankcase and hollow pistons forming air charge precompression chamber
CA2619915A1 (en) * 2008-02-14 2009-08-14 Srdjan Perovic Two stroke engine with regular lubrication system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0204669A2 (en) * 1985-06-04 1986-12-10 B-ART s.a.s. A lubrication system with oil recovery for a two-stroke engine piston with pump-sump for scavenging
DE19904002A1 (en) * 1999-02-02 2000-08-17 Udo Wagener Two-stroke internal combustion engine, with closed crankcase and hollow pistons forming air charge precompression chamber
CA2619915A1 (en) * 2008-02-14 2009-08-14 Srdjan Perovic Two stroke engine with regular lubrication system

Also Published As

Publication number Publication date
GB201116751D0 (en) 2011-11-09
GB2493571A (en) 2013-02-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170929