DE3668943D1 - PISTON-CYLINDER UNIT OF A TWO-STROKE COMBUSTION ENGINE. - Google Patents

PISTON-CYLINDER UNIT OF A TWO-STROKE COMBUSTION ENGINE.

Info

Publication number
DE3668943D1
DE3668943D1 DE8686113495T DE3668943T DE3668943D1 DE 3668943 D1 DE3668943 D1 DE 3668943D1 DE 8686113495 T DE8686113495 T DE 8686113495T DE 3668943 T DE3668943 T DE 3668943T DE 3668943 D1 DE3668943 D1 DE 3668943D1
Authority
DE
Germany
Prior art keywords
piston
grooves
combustion engine
liner
cylinder
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
DE8686113495T
Other languages
German (de)
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.)
GILARDONI VITTORIO SpA
Original Assignee
GILARDONI VITTORIO 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 GILARDONI VITTORIO SpA filed Critical GILARDONI VITTORIO SpA
Application granted granted Critical
Publication of DE3668943D1 publication Critical patent/DE3668943D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
    • 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)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

1. A piston-cylinder assembly for a two cycle internal combustion engine, having first recesses or grooves (9, 20, 31) longitudinally extending in the cylinder liner (3, 21, 36) and directly connecting the inner portion of motor crankcase with the motor combustion chamber when said piston (11) is in positions near its bottom dead center, characterized in that said first grooves cooperate with second grooves or recesses (17, 23, 32, 39) longitudinally extending in the piston liner (12, 24, 33, 38), in correspondence with the cylinder grooves, so as to conjointly form ducts or passages (19, 25, 34) which are adapted to ensure a sweeping of the motor combustion chamber, without involving any main gas feeding passage, said second grooves (17, 23, 32, 39) extending from the lower edge of said piston liner up to a position below the piston seats (14) for seating the piston rings.
DE8686113495T 1985-10-02 1986-10-01 PISTON-CYLINDER UNIT OF A TWO-STROKE COMBUSTION ENGINE. Expired - Fee Related DE3668943D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT22334/85A IT1185972B (en) 1985-10-02 1985-10-02 METHOD TO INCREASE THE PERFORMANCE OF TWO STROKE INTERNAL COMBUSTION ENGINES

Publications (1)

Publication Number Publication Date
DE3668943D1 true DE3668943D1 (en) 1990-03-15

Family

ID=11194825

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686113495T Expired - Fee Related DE3668943D1 (en) 1985-10-02 1986-10-01 PISTON-CYLINDER UNIT OF A TWO-STROKE COMBUSTION ENGINE.

Country Status (7)

Country Link
EP (1) EP0217374B1 (en)
AT (1) ATE50318T1 (en)
DE (1) DE3668943D1 (en)
ES (1) ES2013701B3 (en)
FR (1) FR2588043B1 (en)
IN (1) IN164255B (en)
IT (1) IT1185972B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2645207B1 (en) * 1989-04-04 1991-07-19 Racing Kart Dev Ste Nl TWO-STROKE INTERNAL COMBUSTION ENGINE
DE102011085476A1 (en) * 2011-10-28 2013-05-02 Ks Kolbenschmidt Gmbh Functionally optimized design of a cylinder liner

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2248411A1 (en) * 1973-10-18 1975-05-16 Halder Engines Ltd Two-stroke engine with inlet via crank case - has exhaust ports and overflow ducts from crank case to cylinder in cylinder wall
US4294202A (en) * 1978-09-12 1981-10-13 Performance Industries, Inc. Fuel porting for two cycle internal combustion engine
JPS5813073Y2 (en) * 1979-03-28 1983-03-14 川崎重工業株式会社 Scavenging device for 2-stroke engine

Also Published As

Publication number Publication date
EP0217374A1 (en) 1987-04-08
IT8522334A0 (en) 1985-10-02
IN164255B (en) 1989-02-11
EP0217374B1 (en) 1990-02-07
IT1185972B (en) 1987-11-18
FR2588043B1 (en) 1989-07-28
ES2013701B3 (en) 1990-06-01
ATE50318T1 (en) 1990-02-15
FR2588043A1 (en) 1987-04-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee