EP0272646A3 - An exhaust ports for a two-stroke internal combustion engine - Google Patents

An exhaust ports for a two-stroke internal combustion engine Download PDF

Info

Publication number
EP0272646A3
EP0272646A3 EP87118825A EP87118825A EP0272646A3 EP 0272646 A3 EP0272646 A3 EP 0272646A3 EP 87118825 A EP87118825 A EP 87118825A EP 87118825 A EP87118825 A EP 87118825A EP 0272646 A3 EP0272646 A3 EP 0272646A3
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
exhaust ports
stroke internal
engine
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.)
Granted
Application number
EP87118825A
Other versions
EP0272646A2 (en
EP0272646B1 (en
Inventor
Umberto Panzeri
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.)
DOTT VITTORIO GILARDONI SpA
Original Assignee
DOTT VITTORIO GILARDONI SpA
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 DOTT VITTORIO GILARDONI SpA filed Critical DOTT VITTORIO GILARDONI SpA
Priority to AT87118825T priority Critical patent/ATE73901T1/en
Publication of EP0272646A2 publication Critical patent/EP0272646A2/en
Publication of EP0272646A3 publication Critical patent/EP0272646A3/en
Application granted granted Critical
Publication of EP0272646B1 publication Critical patent/EP0272646B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Characterised By The Charging Evacuation (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The invention concerns the exhaust ports of a two-stroke internal combustion engine, comprising one or more overhanging protruberances which serve to support the piston rings, allowing a larger area exhaust port without the engine seizing or other inconveniences.
EP87118825A 1986-12-23 1987-12-18 Two-stroke internal combustion engine Expired - Lifetime EP0272646B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87118825T ATE73901T1 (en) 1986-12-23 1987-12-18 TWO-STROKE ENGINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8622833A IT8622833A0 (en) 1986-12-23 1986-12-23 EXHAUST PORT FOR TWO-STROKE COMBUSTION ENGINES
IT2283386 1986-12-23

Publications (3)

Publication Number Publication Date
EP0272646A2 EP0272646A2 (en) 1988-06-29
EP0272646A3 true EP0272646A3 (en) 1989-05-24
EP0272646B1 EP0272646B1 (en) 1992-03-18

Family

ID=11200971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87118825A Expired - Lifetime EP0272646B1 (en) 1986-12-23 1987-12-18 Two-stroke internal combustion engine

Country Status (5)

Country Link
EP (1) EP0272646B1 (en)
AT (1) ATE73901T1 (en)
DE (1) DE3777573D1 (en)
ES (1) ES2030704T3 (en)
IT (1) IT8622833A0 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007035025A1 (en) 2007-07-26 2009-01-29 Docter Optics Gmbh Motor vehicle e.g. car, headlight lens producing method, involves producing light diffusing structure in transparent body of headlight lens in accordance with measured gradient of light-dark boundary produced by headlight lens
US8556482B2 (en) 2007-07-26 2013-10-15 Docter Optics Se Method for producing a headlamp lens for a motor-vehicle headlamp
DE102007049835A1 (en) 2007-10-18 2009-04-23 Docter Optics Gmbh Method for producing headlamp lens for vehicle headlamp, particularly for motor-vehicle headlamp, involves measuring gradient of light-dark boundary projected by headlamp lens
DE102007037204B4 (en) 2007-08-07 2020-11-12 Docter Optics Se Method for producing an optical lens element, in particular a headlight lens for a motor vehicle headlight and batch of headlight lenses produced one behind the other
DE102011100071B4 (en) 2011-04-29 2016-11-03 Docter Optics Se Method for producing an optical lens element, in particular a headlight lens for a motor vehicle headlight
DE102012020378A1 (en) 2012-10-18 2014-04-24 Docter Optics Se Method for producing an optical lens element, in particular a headlight lens for a motor vehicle headlight
DE102012021921B4 (en) 2012-11-09 2016-10-27 Docter Optics Se Method for producing an optical lens element, in particular a headlight lens for a motor vehicle headlight

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB409246A (en) * 1933-12-06 1934-04-26 Henry Kent Norris Improvements in or relating to the cylinders of internal combustion engines
DE849034C (en) * 1950-06-23 1952-09-11 Kloeckner Humboldt Deutz Ag Cylinder for two-stroke internal combustion engines
US3398728A (en) * 1965-08-06 1968-08-27 James A. Hardman Two piston sleeve port engine
FR2568628A1 (en) * 1984-08-04 1986-02-07 Sachs Systemtechnik Gmbh High speed two=stroke IC engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB409246A (en) * 1933-12-06 1934-04-26 Henry Kent Norris Improvements in or relating to the cylinders of internal combustion engines
DE849034C (en) * 1950-06-23 1952-09-11 Kloeckner Humboldt Deutz Ag Cylinder for two-stroke internal combustion engines
US3398728A (en) * 1965-08-06 1968-08-27 James A. Hardman Two piston sleeve port engine
FR2568628A1 (en) * 1984-08-04 1986-02-07 Sachs Systemtechnik Gmbh High speed two=stroke IC engine

Also Published As

Publication number Publication date
ES2030704T3 (en) 1992-11-16
EP0272646A2 (en) 1988-06-29
EP0272646B1 (en) 1992-03-18
DE3777573D1 (en) 1992-04-23
IT8622833A0 (en) 1986-12-23
ATE73901T1 (en) 1992-04-15

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