EP1867860B1 - Agencement de chemise de cylindre - Google Patents

Agencement de chemise de cylindre Download PDF

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Publication number
EP1867860B1
EP1867860B1 EP07108375A EP07108375A EP1867860B1 EP 1867860 B1 EP1867860 B1 EP 1867860B1 EP 07108375 A EP07108375 A EP 07108375A EP 07108375 A EP07108375 A EP 07108375A EP 1867860 B1 EP1867860 B1 EP 1867860B1
Authority
EP
European Patent Office
Prior art keywords
cylinder liner
piston
diesel engine
shield
accordance
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.)
Active
Application number
EP07108375A
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German (de)
English (en)
Other versions
EP1867860A1 (fr
Inventor
Dr. Reiner Schulz
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.)
Wartsila NSD Schweiz AG
Original Assignee
Wartsila NSD Schweiz AG
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 Wartsila NSD Schweiz AG filed Critical Wartsila NSD Schweiz AG
Priority to EP07108375A priority Critical patent/EP1867860B1/fr
Priority to PL07108375T priority patent/PL1867860T3/pl
Publication of EP1867860A1 publication Critical patent/EP1867860A1/fr
Application granted granted Critical
Publication of EP1867860B1 publication Critical patent/EP1867860B1/fr
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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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L5/00—Slide valve-gear or valve-arrangements
    • F01L5/04—Slide valve-gear or valve-arrangements with cylindrical, sleeve, or part-annularly shaped valves
    • F01L5/06—Slide valve-gear or valve-arrangements with cylindrical, sleeve, or part-annularly shaped valves surrounding working cylinder or piston
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a cylinder liner arrangement for a two-stroke large diesel engine according to the preamble of claim 1, a method for shielding a cylinder liner in a two-stroke large diesel engine according to the preamble of claim 5 and a large diesel engine with at least one such cylinder liner assembly or equipped for carrying out such a method.
  • Two-stroke large diesel engines of conventional design such as are used in ships and power plants, include a crankshaft, which is rotatably mounted in a crankcase, at least one crosshead and at least one piston, which is arranged movably in a cylinder liner.
  • the piston is connected via a piston rod to the crosshead and the crosshead via a respective push rod with the crankshaft to drive them.
  • the cylinder liner is closed at the top by a cylinder cover so that a cylinder space is created between the piston and the cylinder cover. See eg the documents GB-A-616,893 and EP-A-0 851 101 ,
  • crankshaft housing space is separated from the piston space located below the piston by a partition and the passage of the piston rod into the crankshaft housing space is sealed by means of a stuffing box.
  • top and bottom used in the present specification are based on a standing arrangement of the two-stroke large diesel engine, as is usual for this type of engines, ie the cylinder cover is located at the upper end of the cylinder liner, while the bottom the cylinder liner is oriented towards the crankcase.
  • water droplets which form on cold walls of the air supply system, or which are present in the supplied scavenging air despite a water separator provided in the air supply system, can not only enter the cylinder liners via the scavenging ports but also via the open underside and get on the tread.
  • the water droplets may evaporate on the tread causing local depletion of lubricating oil and / or may form an emulsion of reduced lubricity with the lubricating oil.
  • the object of the present invention is to provide a cylinder liner assembly for a two-stroke large diesel engine and a method for shielding a cylinder liner in a two-stroke large diesel engine, which improve the lubrication of the tread. Another object is to provide a two-stroke large diesel engine having at least one such cylinder liner assembly or equipped to carry out such a process.
  • the inventive cylinder liner assembly includes a cylinder liner for a two-stroke large diesel engine comprising a piston movable in the cylinder liner and a purge air supply.
  • the cylinder liner is provided with fixed scavenging slots and has an open bottom.
  • the cylinder liner assembly additionally includes a bottom of the cylinder liner arranged shield to reduce the amount of entrained in the purge air water drops that reach during a stroke movement of the piston via the bottom into the cylinder liner.
  • the shield can also be arranged or attached to a lower end or end region of the cylinder liner or subsequently to a lower end region of the cylinder liner. As a shield, for example, one or more shielding can be provided.
  • a gap opening between the cylinder liner and a partition which separates a piston adjacent the bottom of the piston chamber from a crankshaft housing space of the two-stroke large diesel engine, partially or completely closed.
  • a gap opening between the cylinder liner and a stuffing box which is provided as a passage for a piston rod to a crankshaft housing space of the two-stroke large diesel engine, partially or completely closed.
  • the cylinder liner assembly additionally comprises a slide for closing the scavenging slots, which may be operatively connected, for example, with a return spring.
  • the operation of the slide to open and close the scavenging slots can be done for example by means of the piston.
  • the inventive method for shielding a cylinder liner in a two-stroke large diesel engine comprising a piston movable in the cylinder liner and a scavenging air supply, wherein the cylinder liner is provided with fixed scavenging slots and having an open bottom, the underside of the cylinder liner by means of a shield, for example in the form of one or more Shielding elements, shielded, which reduces the amount of entrained in the purge air drops of water that reach during a stroke movement of the piston via the bottom in the cylinder liner.
  • the shield or the or the shielding is arranged at the bottom of the cylinder liner or at a lower end or end portion of the cylinder liner or subsequently to a lower end portion of the cylinder liner and / or attached.
  • the shield between the cylinder liner and a partition wall is mounted, which separates a down to the piston subsequent piston chamber of a crankshaft housing space of the two-stroke large diesel engine.
  • the shield between the cylinder liner and a stuffing box is attached, which is used as a passage for a piston rod to a crankcase housing space of the two-stroke large diesel engine.
  • the supply of scavenging air is partially or completely interrupted by means of the shielding via the underside into the cylinder liner.
  • the invention comprises a two-stroke large diesel engine, the at least one cylinder liner, which is provided with fixed Spülschlitzen and having an open bottom, a piston movable in the cylinder liner and a purge air supply.
  • the two-stroke large diesel engine additionally includes a shield disposed at the bottom of the cylinder liner to reduce the amount of water droplets entrained in the purge air that enter the cylinder liner during a stroke movement of the piston via the underside.
  • the shield can also be arranged or attached to a lower end or end region of the cylinder liner or subsequently to a lower end region of the cylinder liner.
  • a shield for example, one or more shielding can be provided.
  • the shield between the cylinder surface and a partition wall formed, which separates a piston at the bottom adjoining the piston chamber of a crankshaft housing space of the two-stroke large diesel engine.
  • the shield between the cylinder surface and a stuffing box is formed, which is provided as a passage for a piston rod to a crankshaft housing space of the two-stroke large diesel engine.
  • the shield is designed as an extension of the cylinder liner.
  • the shield contains a metal sheet, for example a cylindrical metal sheet or a cylindrical sheet metal jacket or insert, which can be formed conically in the lower part if necessary.
  • this additionally contains a slide for closing the scavenging slots, which can be operatively connected, for example, with a return spring.
  • the operation of the slider, i. the opening and closing thereof may be e.g. done by means of the piston.
  • the amount of water droplets that gets onto the tread with the scavenging air via the bottom of the cylinder liner can be effectively reduced.
  • the reduction is typically 80% of the original amount.
  • the remaining 20% of the original amount passes mainly through the scavenging slots in the cylinder liner and on the tread.
  • a slide can be provided, which closes the scavenging slots when the piston is above the same.
  • the amount of water droplets that reach the cylinder with the scavenging air is further reduced.
  • Fig. 1 shows a section of a conventional two-stroke large diesel engine with longitudinal flushing of the cylinder chamber in section.
  • the two-stroke large diesel engine further comprises a piston not visible in the cutout, which is movably arranged in the cylinder liner 3 and connected for the purpose of thrust transmission with a piston rod 2, and a scavenging air supply with a purge air 5 through which the scavenging air is distributed and in which the cylinder liner 3 so far hinmagt that the purge air slots are arranged entirely in the purge air.
  • a located below the piston piston chamber is part of the purge air space 5 and connected thereto, as far as it is in the Cylinder liner is located.
  • a partition wall is provided, which separates the same from a crankshaft housing chamber 6.
  • the implementation of the piston rod 2 is sealed to the crankshaft housing chamber 6 out with a stuffing box 7.
  • Fig. 2 shows a section of a two-stroke large diesel engine 1 with an embodiment of a cylinder liner assembly according to the present invention.
  • the cylinder liner assembly 10 includes in the embodiment, a cylinder liner 3, which is provided with fixed Spülschlitzen 4 and an open bottom 3 'has.
  • the two-stroke large diesel engine 1 comprises a movable piston in the cylinder liner, which is not visible in the section shown, and a purge air supply, which may for example contain a purge air 5 to distribute the purge air to the scavenging slots 4.
  • the cylinder liner 3 can be arranged, for example, such that the scavenging air slots and the underside of the cylinder liner come to lie completely within the scavenging air space 5.
  • the cylinder liner assembly 10 includes in the embodiment additionally arranged at the bottom of the cylinder liner shield, for example, include or consist of one or more shielding elements 9 to reduce the amount of water entrained in the scavenging air during a stroke of the piston over the bottom get into the cylinder liner.
  • a gap opening 11 between the cylinder liner 3 and a partition wall, which separates a piston chamber or the scavenging air space 5 adjoining the piston from a crankshaft housing chamber 6 of the two-stroke large diesel engine are partially or completely closed.
  • the shield may be formed as an extension of the cylinder liner, for example in the form of a tubular jacket or insert, which extend the cylinder liner to a part or the entire gap width.
  • the shield can be made partially or entirely of sheet metal.
  • a gap opening between the cylinder liner 3 and a Stuffing box 7, which is provided as a passage for a piston rod 2 to a crankcase housing space 6 of the two-stroke large diesel engine are partially or completely closed.
  • the shield may be formed as an extension of the cylinder liner and in the lower part, for example, have the shape of a cone to extend the cylinder liner to a part or the entire gap width.
  • one or more pressure compensation openings 9 ' are provided in shielding and / or in the lower end region of the cylinder liner. This is particularly advantageous if one of the above-mentioned stomata can be closed by means of the shield.
  • the two-stroke large diesel engine 1 comprises in the embodiment, at least one cylinder liner 3, which is provided with fixed Spülschlitzen 4 and an open bottom 3 ', a piston movable in the cylinder liner, which is not visible in the shown section, and a scavenging air supply, for example, a Purge air space 5 may contain to distribute the purge air to the scavenging slots 4.
  • the cylinder liner 3 is arranged, for example, so that the scavenging air slots and the underside of the cylinder liner lie entirely within the scavenge air space 5.
  • the two-stroke large diesel engine 1 comprises in the embodiment additionally arranged at the bottom of the cylinder liner shield, for example, include or consist of one or more shielding elements 9 to reduce the amount of entrained in the scavenging air drops of water during a stroke of the piston over get the bottom into the cylinder liner.
  • the shield between the cylinder liner 3 and a partition wall is formed, the one at the bottom separating the piston adjacent piston chamber or the purge air 5 from a crankshaft housing chamber 6 of the two-stroke large diesel engine.
  • the shield may be formed as an extension of the cylinder liner, for example in the form of a tubular jacket or insert, which extend the cylinder liner towards the partition or to the same.
  • the shield may be made partially or entirely of sheet metal.
  • the shield between the cylinder liner 3 and a stuffing box 7 is formed, which is provided as a passage for a piston rod 2 to a crankcase housing space 6 of the two-stroke large diesel engine.
  • the shield may be formed as an extension of the cylinder liner and in the lower part, for example, have the shape of a cone to extend the cylinder liner toward the stuffing box or to the same. This embodiment has the advantage that the shield can be connected in a simple manner with the stuffing box.
  • the shield may, as already mentioned in the last section, be made partially or entirely of sheet metal.
  • one or more pressure compensation openings 9 ' can be provided in the shield and / or in the lower end region of the cylinder liner. This is particularly advantageous if the gap openings between the cylinder liner 3 and the partition wall or between the cylinder liner 3 and the stuffing box 7 are closed by the shield.
  • an inspection opening e.g. a closable inspection opening, be provided, through which the inspection of the tread can be carried out in the usual way.
  • Fig. 3 shows a section of a two-stroke large diesel engine with a second embodiment of a cylinder liner assembly according to the present invention.
  • the second embodiment differs from the embodiment described above in that the Cylinder sleeve assembly 10 in addition to the shield already described a slider 14 includes for closing the scavenging ports 4 when the piston is above it.
  • the slider can be actuated for example by means of the piston.
  • the cylinder liner assembly 10 may include, if necessary, one or more return springs 13 operatively connected to the slider 14.
  • the slider 14 may be formed as a tubular shell or insert, which is moved for example by one or more return springs up into a position in which the scavenging slots are closed by the slider.
  • flushing slots 4 are released.
  • a rotatable jacket or insert in the form of a pipe section with slots which is rotated to open and close the scavenging slots.
  • a second embodiment of a two-stroke large diesel engine according to the present invention will be described below with reference to Fig. 3 described.
  • the second embodiment differs from the embodiment of a two-stroke large diesel engine described above in that, in addition to the shield already described, it includes a slide 14 for closing the scavenging ports 4 when the piston is above it.
  • the slider can be actuated for example by means of the piston.
  • the two-stroke large diesel engine 1 may contain one or more return springs 13, if necessary, which are in operative connection with the slider 14.
  • the slider 14 may be formed as a tubular shell or insert, which is moved for example by one or more return springs up into a position in which the scavenging slots are closed by the slider.
  • flushing slots 4 are released.
  • a rotatable jacket or insert in the form of a pipe section with slots which is rotated to open and close the scavenging slots.
  • the large diesel engine 1 which is assumed in the process comprises a movable piston in the cylinder liner 3 and a purge air, wherein the cylinder liner 3 is provided with fixed Spülschlitzen 4 and an open bottom 3 'has.
  • the underside 3 'of the cylinder liner by means of a shield, for example in the form of one or more shielding elements 9, shielded, which reduces the amount of entrained in the purge water drops of water that reach during a lifting movement of the piston via the bottom in the cylinder liner.
  • the shield or the or the shielding elements 9 can be arranged and / or attached, for example, below the cylinder liner or at a lower end or end portion of the cylinder liner or subsequently to a lower end portion of the cylinder liner.
  • the shield between the cylinder liner 3 and a partition wall is attached, which separates a piston adjoining the piston bottom of the piston chamber from a crankshaft housing chamber 6 of the two-stroke large diesel engine 1.
  • the shield between the cylinder liner 3 and a stuffing box 7 is attached, which is used as a passage for a piston rod 2 to a crankcase housing space 6 of the two-stroke large diesel engine 1.
  • the supply of scavenging air via the underside into the cylinder liner partially or completely or up to a remainder, which passes via pressure equalization openings in the cylinder liner is interrupted by the shield.
  • the cylinder liner assembly, the method, and the two-stroke large diesel engine as well as the aforementioned embodiments described above help to keep water drops contained in the purge air away from the tread, thereby improving the reliability of tread lubrication.

Claims (14)

  1. Agencement de chemise de cylindre avec une chemise de cylindre (3) pour un grand moteur Diesel (1) à deux temps, qui comprend un piston déplaçable dans la chemise de cylindre et une amenée d'air de balayage, ladite chemise de cylindre (3) étant pourvue de fentes de balayage fixes (4) et présentant un côté inférieur ouvert (3'), caractérisé en ce que l'agencement de chemise de cylindre (10) contient additionnellement une protection disposée en bas à la chemise de cylindre pour réduire la quantité des gouttes d'eau entraînées dans l'air de balayage, qui arrive pendant un mouvement de course du piston sur le côté inférieur dans la chemise de cylindre.
  2. Agencement de chemise de cylindre selon la revendication 1, où au moyen de la protection, une ouverture de fente (11) entre la chemise de cylindre (3) et une paroi de séparation, qui sépare une enceinte de piston faisant suite en bas au piston d'une enceinte de vilebrequin (6) du grand moteur Diesel à deux temps, peut être fermée partiellement ou complètement.
  3. Agencement de chemise de cylindre selon l'une des revendications 1 ou 2, où au moyen de la protection, une ouverture de fente entre la chemise de cylindre (3) et un presse-étoupe (7), qui est prévu comme passage pour une tige de piston (2) vers une enceinte de vilebrequin (6) du grand moteur Diesel à deux temps, peut être fermée partiellement ou complètement.
  4. Agencement de chemise de cylindre selon l'une des revendications 1 à 3, comprenant additionnellement un poussoir (14) pour fermer les fentes de balayage (4), en particulier un poussoir qui est fonctionnellement relié à un ressort de rappel (13) et/ou est actionnable au moyen du piston.
  5. Procédé de protection d'une chemise de cylindre (3) dans un grand moteur Diesel à deux temps (1), qui comprend un piston déplaçable dans la chemise de cylindre et une amenée d'air de balayage, ladite chemise de cylindre (3) étant pourvue de fentes de balayage fixes (4) et présentant un côté inférieur ouvert (3'), caractérisé en ce que le côté inférieur (3') de la chemise de cylindre (3) est protégé au moyen d'une protection qui réduit la quantité de gouttes d'eau entraînées dans l'air de balayage qui arrivent pendant un mouvement de course du piston sur le côté inférieur dans la chemise de cylindre, et qui est disposé ou monté en particulier en bas sur la chemise de cylindre.
  6. Procédé selon la revendication 5, où la protection est montée entre la chemise de cylindre (3) et une paroi de séparation qui sépare une enceinte de piston faisant suite en bas au piston d'une enceinte de vilebrequin (6) du grand moteur Diesel à deux temps.
  7. Procédé selon l'une des revendications 5 ou 6, où la protection est montée entre la chemise de cylindre (3) et un presse-étoupe (7), qui est utilisé comme passage pour une tige de piston (2) vers une enceinte de vilebrequin (6) du grand moteur Diesel à deux temps.
  8. Procédé selon l'une des revendications 5 à 7, où au moyen de la protection, l'amenée de l'air de balayage sur le côté inférieur (3') dans la chemise de cylindre (3) est interrompue partiellement ou complètement.
  9. Grand moteur Diesel à deux temps comprenant au moins une chemise de cylindre (3) qui est munie de fentes de balayage fixes (4) et présente un côté inférieur ouvert (3'), un piston déplaçable dans la chemise de cylindre et une amenée d'air de balayage, caractérisé en ce que le grand moteur Diesel à deux temps (1) comprend additionnellement une protection disposée en bas à la chemise de cylindre, pour réduire la quantité de gouttes d'eau entraînées dans l'air de balayage, qui arrivent pendant un mouvement de course du piston sur le côté inférieur dans la chemise de cylindre.
  10. Grand moteur Diesel à deux temps selon la revendication 9, où la protection est réalisée entre la chemise de cylindre (3) et une paroi de séparation, qui sépare une enceinte de piston faisant suite en bas au piston d'une enceinte de vilebrequin (6) du grand moteur Diesel à deux temps (1).
  11. Grand moteur Diesel à deux temps selon l'une des revendications 9 ou 10, où la protection est réalisée entre la chemise de cylindre (3) et un presse-étoupe (7) qui est prévu comme passage pour une tige de piston (2) vers une enceinte de vilebrequin (6) du grand moteur Diesel à deux temps (1).
  12. Grand moteur Diesel à deux temps selon l'une des revendications 9 à 11, où la protection est réalisée comme prolongement de la chemise de cylindre (3).
  13. Grand moteur Diesel à deux temps selon l'une des revendications 9 à 12, où la protection contient une tôle, en particulier une tôle cylindrique.
  14. Grand moteur Diesel à deux temps selon l'une des revendications 9 à 13, comprenant additionnellement un poussoir (14) pour la fermeture des fentes de balayage (4), en particulier un poussoir qui est fonctionnellement relié à un ressort de rappel (13) et/ou est actionnable au moyen du piston.
EP07108375A 2006-06-16 2007-05-16 Agencement de chemise de cylindre Active EP1867860B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07108375A EP1867860B1 (fr) 2006-06-16 2007-05-16 Agencement de chemise de cylindre
PL07108375T PL1867860T3 (pl) 2006-06-16 2007-05-16 Układ tulei cylindrowej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06405259 2006-06-16
EP07108375A EP1867860B1 (fr) 2006-06-16 2007-05-16 Agencement de chemise de cylindre

Publications (2)

Publication Number Publication Date
EP1867860A1 EP1867860A1 (fr) 2007-12-19
EP1867860B1 true EP1867860B1 (fr) 2009-01-14

Family

ID=37199240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07108375A Active EP1867860B1 (fr) 2006-06-16 2007-05-16 Agencement de chemise de cylindre

Country Status (8)

Country Link
EP (1) EP1867860B1 (fr)
JP (1) JP2007332971A (fr)
KR (1) KR20070120039A (fr)
CN (1) CN101089376B (fr)
AT (1) ATE421036T1 (fr)
DE (1) DE502007000374D1 (fr)
DK (1) DK1867860T3 (fr)
PL (1) PL1867860T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101385792B1 (ko) 2009-06-29 2014-04-16 에이치.세지엘스키-서비스 에스피. 지 오.오. 저속 압축-점화 2-행정 엔진에서 피스톤-실린더 라이너 유닛용 작동 파라미터 결정 방법
WO2015015508A2 (fr) * 2013-08-02 2015-02-05 K R Rajan Moteur à combustion interne à deux temps à piston fixe et cylindre mobile comportant une chambre annulaire de suralimentation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB616893A (en) * 1943-05-26 1949-01-28 Werkspoor Nv Improvements in or relating to cylinders of single acting two stroke internal combustion engines
JPH05202802A (ja) * 1992-01-28 1993-08-10 Mitsubishi Heavy Ind Ltd シリンダライナの掃気ポート
DE59609434D1 (de) * 1996-12-24 2002-08-14 Waertsilae Schweiz Ag Winterth Dieselmotor
US6848399B2 (en) * 2003-05-30 2005-02-01 Electrolux Home Products, Inc. Scavenging insert for an engine

Also Published As

Publication number Publication date
DK1867860T3 (da) 2009-04-27
ATE421036T1 (de) 2009-01-15
KR20070120039A (ko) 2007-12-21
CN101089376A (zh) 2007-12-19
EP1867860A1 (fr) 2007-12-19
CN101089376B (zh) 2010-12-22
JP2007332971A (ja) 2007-12-27
PL1867860T3 (pl) 2009-06-30
DE502007000374D1 (de) 2009-03-05

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