EP3540202A1 - Dichtring, zylinder für einen verbrennungsmotor, verbrennungsmotor, verfahren zur herstellung eines zylinders und verwendung eines dichtrings - Google Patents

Dichtring, zylinder für einen verbrennungsmotor, verbrennungsmotor, verfahren zur herstellung eines zylinders und verwendung eines dichtrings Download PDF

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Publication number
EP3540202A1
EP3540202A1 EP18161648.3A EP18161648A EP3540202A1 EP 3540202 A1 EP3540202 A1 EP 3540202A1 EP 18161648 A EP18161648 A EP 18161648A EP 3540202 A1 EP3540202 A1 EP 3540202A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
sealing ring
width
cylinder liner
combustion 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.)
Withdrawn
Application number
EP18161648.3A
Other languages
English (en)
French (fr)
Inventor
Samuel Affolter
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.)
Winterthur Gas and Diesel AG
Original Assignee
Winterthur Gas and Diesel 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 Winterthur Gas and Diesel AG filed Critical Winterthur Gas and Diesel AG
Priority to EP18161648.3A priority Critical patent/EP3540202A1/de
Publication of EP3540202A1 publication Critical patent/EP3540202A1/de
Withdrawn legal-status Critical Current

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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 
    • F02F1/004—Cylinder liners
    • 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
    • F02F11/00—Arrangements of sealings in combustion engines 
    • F02F11/002—Arrangements of sealings in combustion engines  involving cylinder heads
    • 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 
    • F02F2001/006—Cylinders; Cylinder heads  having a ring at the inside of a liner or cylinder for preventing the deposit of carbon oil particles, e.g. oil scrapers

Definitions

  • the present invention is directed to a sealing ring for use in a cylinder of a combustion engine, a cylinder for a combustion engine, a combustion engine, a method for producing a cylinder for a combustion engine and the use of a sealing ring according to the preamble of the independent claims.
  • ignited gas can enter the gap between cylinder cover and cylinder liner leading to significant heat input into the components.
  • a sealing ring in particular an anti-polishing ring, for use in a cylinder of a combustion engine, preferably of a large two-stroke, cross-head ship engine.
  • a sealing ring has an inner diameter D, a length L and a width W.
  • the length L is dimensioned such that in a built-in situation in a cylinder the sealing ring extends beyond the cylinder liner of the cylinder.
  • Such a sealing ring enables the sealing of the gap between cylinder liner and cylinder cover and thus leads to essentially no gas or ignited gas or other fuel or ignited fuel entering the gap, thereby less or no heat is introduced into those components and additionally fuel efficiency is increased.
  • the engine can be a dual fuel engine.
  • the sealing ring can additionally be an anti-polishing ring, and thereby removing any deposits accumulating on the top land of the piston.
  • the anti-polishing ring has a slightly smaller inner diameter than the corresponding cylinder liner.
  • the sealing ring can comprise at least two segments along the length L, wherein at least one segment has different elasticity behavior than at least one of the other segments.
  • the sealing ring can comprise at least two, preferably three, different width W along its length L.
  • the width can be adapted to the needs in the certain position of the sealing ring. Especially in regions where more elastic behavior of the sealing ring is needed, for example in the area of the gap between cylinder liner and cylinder cover, the width can be reduced.
  • the sealing ring can comprise three different widths W, wherein a first width W 1 at a first end is larger than a second width W 2 at a second end and both widths W 1 and W 2 are larger than a third width W 3 , which is located between the first width W 1 and the second width W 2 .
  • the sealing ring is more elastic in the region W3, where more elasticity might be desired. This could lead to less stresses in the parts and therefore a longer durability of the whole cylinder.
  • the sealing ring can be made from metal, in particular forged steel.
  • a cylinder for a combustion engine in particular a two-stroke, cross head engine, more particularly a diesel engine, preferably a multi-fuel or dual-fuel engine, comprising a cylinder liner and a cylinder cover.
  • the cylinder cover is arranged on the cylinder liner, wherein a sealing ring, in particular an anti-polishing ring, in particular a sealing ring as previously described, is arranged on a cylinder liner.
  • the sealing ring extends beyond the cylinder liner into the cylinder cover.
  • Such a cylinder with a sealing ring does not allow for gas or other fuel to enter the gap between cover and liner and therefore the heat input into the components is reduced. Additionally this leads to a reduced fuel consumption.
  • the sealing ring can extend at least 10%, preferably at least 20%, of its length L beyond the cylinder liner.
  • a sealing ring can extend at most 60%, preferably at most 50%, more preferably at most 40% of the length L of the sealing ring beyond the cylinder liner.
  • a second width W 2 of the sealing ring in an area of the cylinder cover can be smaller than a first width W 1 in an area of the cylinder liner.
  • a third width W 3 of a sealing ring can be smaller in an area between cylinder liner and cylinder cover than a first width W1 in an area of the cylinder liner and preferably than a second width W2 in an area of the cylinder cover.
  • the widths can each comprise a segment of a third of the length of the sealing ring. Additionally, it is possible to adjust each length segment of each width to the need of each cylinder, e.g. the width W 3 can extend along a shorter segment than widths W 2 and/or W1.
  • the transition between the different widths can be steep, or smooth such that no sharp transitions are present which would cause local stress concentrations.
  • the object is additionally achieved by a combustion engine, preferably a two-stroke, cross-head engine in particular a multi-fuel or dual-fuel engine, more preferably a diesel engine, comprising a cylinder as previously described.
  • a combustion engine preferably a two-stroke, cross-head engine in particular a multi-fuel or dual-fuel engine, more preferably a diesel engine, comprising a cylinder as previously described.
  • Such a combustion engine is more durable, has a lower fuel consumption and is less service intense.
  • a method for producing a cylinder in particular a cylinder for a combustion engine, preferably a two-stroke, cross-head combustion engine of a large ship, more preferably a diesel engine, in particular a multi-fuel or dual-fuel engine, more preferably a cylinder as previously described, comprising the steps of
  • sealing ring seals the gap between cylinder liner and cylinder cover and leads to a more durable cylinder and lower fuel consumption.
  • the object is additionally achieved by the use of a sealing ring, in particular anti-polishing ring, for sealing the gap between cylinder liner and cylinder cover of a cylinder of a combustion engine, in particular an engine for a large ship, preferably a two-stroke, cross-head engine, more preferably a diesel engine, most preferably a multi-fuel or dual-fuel diesel engine for ships.
  • a sealing ring in particular anti-polishing ring, for sealing the gap between cylinder liner and cylinder cover of a cylinder of a combustion engine, in particular an engine for a large ship, preferably a two-stroke, cross-head engine, more preferably a diesel engine, most preferably a multi-fuel or dual-fuel diesel engine for ships.
  • the fuels used for such an engine can be heavy fuel oil and/or diesel and/or gas and/or alcohol or a derivative thereof and/or a mixture of the fuels mentioned in particular comprising water.
  • Figure 1 shows a first embodiment of sealing ring 1 in a sectional view.
  • the view is a cutout from a cylinder and shows a cylinder liner 2 and a cylinder cover 3. Between cylinder liner 2 and cylinder cover 3 a gap 5 is arranged. Inside the cylinder a piston 4 is shown below its top position. The sealing ring 1 extends beyond the cylinder liner 2 into cylinder cover 3. This way the gap 5 is covered and sealed by sealing ring 1. Additionally, the inner diameter of the sealing ring 1 is slightly smaller than the inner diameter of the cylinder liner 2, such that it is possible to use the sealing ring 1 simultaneously as an anti-polishing ring.
  • the sealing ring 1 has a length L which is dimensioned such that the sealing ring covers gap 5 and extends beyond cylinder liner 2 into cylinder cover 3.
  • the sealing ring further has one width W along its entire length.
  • the sealing ring is made from metal, in particular forged steel.
  • the length of the sealing ring 1 is in a range between 40 mm and 200 mm, depending on the cylinder used.
  • the width W of the sealing ring 1 is in a range of 8 mm to 30 mm depending on the cylinder used.
  • Figure 2 shows an alternative of a sealing ring 1 in a sectional view.
  • the sealing ring 1 covers the gap 5 between cylinder liner 2 and cylinder cover 3.
  • the piston 4 is in its top position above the sealing ring 1.
  • the sealing ring 1 additionally has an anti-polishing function. Compared to the sealing ring 1 shown in figure 1 , this sealing ring is wider and shorter, which makes the ring easier to produce.
  • FIG 3 shows an alternative embodiment of a sealing ring 1 as shown in figure 2 .
  • the sealing ring 1 has the same widths in the area of the cylinder cover 3 and the cylinder liner 2. In the area of the gap 5 the widths W of the sealing ring 1 is reduced. This leads to the sealing ring 1 being more elastic in the area and less forces to be introduced into the parts. Furthermore, the reduction in widths W of the sealing ring 1 is steady which leads to a better stress distribution.
  • Figure 4 shows a sealing ring 1 in a top view.
  • the sealing ring 1 has an inner diameter D, which in case of the sealing ring having an anti-polishing function is slightly smaller than the inner diameter of the cylinder liner (not shown).
  • Figure 5 shows a sealing ring 1 having three different widths W.
  • the area of the sealing ring being arranged in the cylinder liner 2 (not shown) is the broadest width W 1 .
  • the area being arranged in the cylinder cover 3 (not shown) is smaller than W 1 and denoted as W 2 .
  • the smallest width W 3 is located in the area of the gap 5 (not shown).

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)
EP18161648.3A 2018-03-14 2018-03-14 Dichtring, zylinder für einen verbrennungsmotor, verbrennungsmotor, verfahren zur herstellung eines zylinders und verwendung eines dichtrings Withdrawn EP3540202A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18161648.3A EP3540202A1 (de) 2018-03-14 2018-03-14 Dichtring, zylinder für einen verbrennungsmotor, verbrennungsmotor, verfahren zur herstellung eines zylinders und verwendung eines dichtrings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18161648.3A EP3540202A1 (de) 2018-03-14 2018-03-14 Dichtring, zylinder für einen verbrennungsmotor, verbrennungsmotor, verfahren zur herstellung eines zylinders und verwendung eines dichtrings

Publications (1)

Publication Number Publication Date
EP3540202A1 true EP3540202A1 (de) 2019-09-18

Family

ID=61655614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18161648.3A Withdrawn EP3540202A1 (de) 2018-03-14 2018-03-14 Dichtring, zylinder für einen verbrennungsmotor, verbrennungsmotor, verfahren zur herstellung eines zylinders und verwendung eines dichtrings

Country Status (1)

Country Link
EP (1) EP3540202A1 (de)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038235A1 (de) * 1980-10-10 1982-05-06 Mahle Gmbh, 7000 Stuttgart Zylinder oder zylinderlaufbuchse fuer hubkolben-verbrennungsmotoren
US4474147A (en) * 1981-12-10 1984-10-02 Mack Trucks, Inc. Combined fire ring and carbon scraping insert
EP0566864A1 (de) * 1992-04-24 1993-10-27 MAN Nutzfahrzeuge Aktiengesellschaft Zylinderkopfdichtung für eine Brennkraftmaschine
EP0684411A1 (de) 1994-05-27 1995-11-29 Wartsila Diesel International Ltd. OY Schleifneutralisierender Ring
EP1061294A2 (de) 1999-06-04 2000-12-20 Wärtsilä NSD OY AB Nichpoliernede Ringdichtung
WO2009120405A1 (en) * 2008-03-26 2009-10-01 General Electric Company Power assembly for internal combustion engine with welded-in piston scraper
EP2535540A1 (de) 2011-06-16 2012-12-19 Wärtsilä Switzerland Ltd. Einsatz für einen Zylinder einer Brennkraftmaschine
DE102016003004A1 (de) * 2016-03-11 2017-09-14 Mtu Friedrichshafen Gmbh Brennraum mit Koksabstreifring
US20180051648A1 (en) * 2015-03-10 2018-02-22 Mahle International Gmbh Arrangement for an internal combustion engine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038235A1 (de) * 1980-10-10 1982-05-06 Mahle Gmbh, 7000 Stuttgart Zylinder oder zylinderlaufbuchse fuer hubkolben-verbrennungsmotoren
US4474147A (en) * 1981-12-10 1984-10-02 Mack Trucks, Inc. Combined fire ring and carbon scraping insert
EP0566864A1 (de) * 1992-04-24 1993-10-27 MAN Nutzfahrzeuge Aktiengesellschaft Zylinderkopfdichtung für eine Brennkraftmaschine
EP0684411A1 (de) 1994-05-27 1995-11-29 Wartsila Diesel International Ltd. OY Schleifneutralisierender Ring
EP1061294A2 (de) 1999-06-04 2000-12-20 Wärtsilä NSD OY AB Nichpoliernede Ringdichtung
WO2009120405A1 (en) * 2008-03-26 2009-10-01 General Electric Company Power assembly for internal combustion engine with welded-in piston scraper
EP2535540A1 (de) 2011-06-16 2012-12-19 Wärtsilä Switzerland Ltd. Einsatz für einen Zylinder einer Brennkraftmaschine
US20180051648A1 (en) * 2015-03-10 2018-02-22 Mahle International Gmbh Arrangement for an internal combustion engine
DE102016003004A1 (de) * 2016-03-11 2017-09-14 Mtu Friedrichshafen Gmbh Brennraum mit Koksabstreifring

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