US3661135A - Wet cylinder liner for piston-type internal combustion engines - Google Patents

Wet cylinder liner for piston-type internal combustion engines Download PDF

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Publication number
US3661135A
US3661135A US743571A US3661135DA US3661135A US 3661135 A US3661135 A US 3661135A US 743571 A US743571 A US 743571A US 3661135D A US3661135D A US 3661135DA US 3661135 A US3661135 A US 3661135A
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United States
Prior art keywords
liner
ring
head
flange
grooves
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 - Lifetime
Application number
US743571A
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English (en)
Inventor
Kurt Weiss
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Sulzer AG
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Sulzer AG
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Filing date
Publication date
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Publication of US3661135A publication Critical patent/US3661135A/en
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    • 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
    • F02F11/005—Arrangements of sealings in combustion engines involving 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/16—Cylinder liners of wet type
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/006—Camshaft or pushrod housings
    • F02F2007/0063—Head bolts; Arrangements of cylinder head bolts

Definitions

  • the present invention pertains to a piston-type internal combustion engine having replaceable cylinder liners wherein the liners include a flange which is compressed between the cylinder block and the cylinder head, a clearance being left between the liner and head which extends over a part of the top of the flange from the inside limit thereof out to the location at which the flange is compressed between the engine block and head.
  • the invention provides an engine of this character including a packing which closes this clearance, the packing being disposed at that end of the clearance adjacent the interior of the liner.
  • the liners are provided with a flange which bears against a plane surface of the engine block.
  • the head bears against the liner of each cylinder, via a gasket, at a location having the same radial distance from the center of the cylinder as the location at which the liner flange bears against the engine block.
  • the packing provided by the invention in the headliner flange clearance takes the shape ofa ring disposed in coaxial grooves, one in the head and the other in the liner flange, the packing ring having a certain amount of axial play in these grooves.
  • the packing ring bears against the radially outer walls of these grooves.
  • the radially outer side of the packing ring and the radially outer walls of the grooves which receive it are bevelled outwardly toward the mid-height of the ring, i.e. toward the clearance across which the two coaxial grooves face each other.
  • the ring can be oversized and forced into the grooves upon assembly, when the head is drawn down against the liner flanges, in order further to improve its sealing properties.
  • a bevelling is provided on at least one of the axial ends of the ring on the radially outer face thereof, to facilitate insertion of the ring into the corresponding groove or grooves in the course of engine assembly.
  • the ring is made with a stiff center portion, i.e. at the middle of the short axial length of the ring, and is given a greater compliance in the upper and lower end portions thereof.
  • the middle portion receives the gas pressures, which are operative in the region of the clearance, and it must consequently be stiff enough to withstand expansion into that clearance.
  • the compliant end portions can then be deformed under the gas pressure in order to improve sealing operation.
  • FIG. 1 is a fragmentary axial section through the upper end of a wet liner construction in accordance with the invention together with the adjacent portions of the engine block and cylinder head;
  • FIG. 2 is a reproduction of part of FIG. 1 at an enlarged scale, but showing a modified shape for the sealing or packing ring;
  • FIGS. 3 to 5 are further detailed views similar to that of FIG. 2, but showing still further modified shapes for the sealing ring and for the grooves of the liner and cylinder head which receive it.
  • reference character 1 identifies the upper end of a wet cylinder liner in a supercharged diesel engine.
  • the liner 1 is provided with a flange 2 having a plane or flatly conical lower surface 3 bearing against a plane surface of an engine block 4.
  • the flange 2 is provided with a groove 5 in which lies a gasket 6.
  • a gasket 6 against the gasket there bears an annular advance or ridge 7 of a cylinder head 8.
  • the head 8 is fastened to the block 4 by means of screws not shown. The stress exerted by the screws serves to squeeze the flange 2 together with the gasket 6 between the head 8 and the engine block 4.
  • By suitable dimensioning of the groove 6 and ridge 7, a clearance 9 is left between the head 8 and the liner 1.
  • a channel or fillet 17 At the junction between the flange lower surface 3 and the cylindrical exterior surface of the liner there is provided a channel or fillet 17.
  • a supplementary packing generally indicated at 10 is provided at the radially inner end of the clearance 9, as closely as possible to the combustion chamber 18 inside the liner.
  • the supplementary packing 10 comprises in the embodiment of FIG. 1 a ring 11 disposed in part in a groove 12 in the liner 1 and in part in a groove 13 in head 8, the grooves 12 and 13 being coaxial.
  • the ring 11 is preferably complete, that is to say it is not a split ring, and it bears against the radially outer walls or sides 14 and 15 of the grooves 12 and 13, these being the sides away from the combustion chamber 18. An axial clearance is left for the packing in those grooves.
  • FIG. 2 shows a construction generally similar to that of FIG. 1, like reference characters being employed for like parts of structure.
  • the sealing ring 20 of FIG. 2 is provided with a bevel 21 at the radially outer edge of one axial end thereof.
  • the bevel 21 facilitates introduction of the ring into the groove 13 of the cylinder head.
  • FIG. 3 shows a sealing ring 30 having a bevel 31 similar to the bevel 21 of FIG. 2.
  • the ring 30 possesses in addition an inner surface comprising a cylindrical central portion 32 and two bevelled end portions 33 and 34.
  • the middle portion 32 is made thick enough to be able, even under the load of the gas pressures, to bridge over the clearance 9 and also over the bevelled portions 35 and 36 provided at the mouth of the grooves 12 and 13 on the walls 14 and thereof, all without sustaining excessive stresses.
  • the axial ends of the ring 30 are weakened or made more compliant by the bevels 33 and 34, and can consequently be better sealed against the side walls 14 and 15 under influence of the gases than in the case of a ring having the same radial thickness throughout its height.
  • FIGS. 4 and 5 differ from those hereinabove described in that the liner 1 and the cylinder head 8 are provided with grooves 42 and 43 whose radially outer side walls 44 and 45 are outwardly bevelled toward the mouth of those grooves, as shown in those figures.
  • a sealing ring 41 is disposed in the grooves 42 and 43 in FIG. 4, the inner surface of this ring being cylindrical and the outer surface thereof having bevels matching those of the grooves.
  • FIG. 4 has the advantage that the ring 41 can be provided with a slight oversize, and is then prestressed upon assembly into the grooves 42 and 43. In this way the sealing effect of the ring is further improved. In addition, assembly is facilitated by the bevelled surfaces of the ring and of the grooves.
  • the grooves 42 and 43 of FIG. 5 are the same as the grooves 42 and 43 of FIG. 4.
  • the ring 51 of FIG. 5 moreover corresponds substantially to the ring 41 of FIG. 4. Its inner surface however is not cylindrical, but rather bevelled and extends substantially parallel to the exterior surfaces which lie against the surfaces 44 and 45 of the grooves 42 and 43.
  • Such a ring has the advantage that it can be manufactured easily, for example, by welding together the ends of a strip and has, nevertheless, the advantages of the construction of FIG. 4.
  • the ring of the seal 10 need not be disposed in grooves.
  • the ring can be disposed in radial recesses or notches open toward the combustion space. In this way it is possible, for example, to bring the ring even closer to the inner end of the clearance than in the constructions illus trated.
  • the ring can also be provided with a split like a piston ring, or be divided into more than two parts.
  • any other sort of sealing can be employed at the inner end of the clearance, for example, one which does not employ a ring at all, but which would correspond to the ring 12.
  • seals having compressible edges deformable on dis-assembly, or seals of labyrinth type.
  • Soft seals can also be employed.
  • An internal combustion engine comprising a cylinder block, a cylinder head, a wet liner having an outwardly extending flange at the head end thereof, a gasket stressed between the flange and head exteriorly of the inside diameter of the liner to preserve a gap between the head and flange, said gap extending radially outwardly from said inside diameter, said head and flange having coaxial annular grooves formed therein facing each other across said gap, and an annular packing fitting within said grooves and extending across said gap.

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  • 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)
  • Gasket Seals (AREA)
US743571A 1967-07-12 1968-07-09 Wet cylinder liner for piston-type internal combustion engines Expired - Lifetime US3661135A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH995867A CH475474A (de) 1967-07-12 1967-07-12 Kolbenbrennkraftmaschine mit auswechselbarer Zylinderbüchse

Publications (1)

Publication Number Publication Date
US3661135A true US3661135A (en) 1972-05-09

Family

ID=4357552

Family Applications (1)

Application Number Title Priority Date Filing Date
US743571A Expired - Lifetime US3661135A (en) 1967-07-12 1968-07-09 Wet cylinder liner for piston-type internal combustion engines

Country Status (5)

Country Link
US (1) US3661135A (de)
CH (1) CH475474A (de)
FR (1) FR1570901A (de)
GB (1) GB1212053A (de)
NL (1) NL6710969A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978840A (en) * 1973-08-21 1976-09-07 Klockner-Humboldt-Deutz Aktiengesellschaft Cylinder head with welded-on cylinder and method of making said welded unit
US5112066A (en) * 1990-12-05 1992-05-12 Arne Remmerfelt Resilient sealing ring
EP0768459A1 (de) * 1995-10-13 1997-04-16 Scania Cv Aktiebolag Abdichtungsvorrichtung für eine Verbrennungskammer einer Brennkraftmaschine
US6036194A (en) * 1996-09-16 2000-03-14 Cummins Engine Company, Inc. Combustion gas seal for an internal combustion engine
US20070170661A1 (en) * 2006-01-26 2007-07-26 Amable Mancenido Fire ring seal
US8978620B2 (en) 2012-02-10 2015-03-17 Cummins Inc. Seatless wet cylinder liner for internal combustion engine
US10316971B2 (en) 2012-07-04 2019-06-11 Mtu Friedrichshafen Gmbh Insert and internal combustion engine comprising insert

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3039232A1 (de) * 1980-10-17 1982-05-19 Klöckner-Humboldt-Deutz AG, 5000 Köln Dichtungsanordnung
DE4213502A1 (de) * 1992-04-24 1993-10-28 Man Nutzfahrzeuge Ag Zylinderkopfdichtung für eine Brennkraftmaschine
JP3824832B2 (ja) * 2000-02-10 2006-09-20 本田技研工業株式会社 内燃機関のシリンダヘッド
RU2232280C1 (ru) * 2002-10-14 2004-07-10 Федеральное государственное образовательное учреждение "Морской государственный университет им. адмирала Г.И. Невельского" Уплотнение камеры сгорания двигателя внутреннего сгорания (варианты)
DE102007026476A1 (de) 2007-06-05 2008-12-11 Federal-Mogul Sealing Systems Gmbh Einrichtung zur Abdichtung von Brennräumen einer Brennkraftmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340774A (en) * 1965-07-13 1967-09-12 Arthur M Brenneke Combination cylinder sleeve or liner and combustion chamber seal
US3363608A (en) * 1964-05-08 1968-01-16 Daimler Benz Ag Internal combustion engine
US3410256A (en) * 1965-01-12 1968-11-12 Daimler Benz Ag Internal combustion engine with liquid-cooled cylinder liners

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363608A (en) * 1964-05-08 1968-01-16 Daimler Benz Ag Internal combustion engine
US3410256A (en) * 1965-01-12 1968-11-12 Daimler Benz Ag Internal combustion engine with liquid-cooled cylinder liners
US3340774A (en) * 1965-07-13 1967-09-12 Arthur M Brenneke Combination cylinder sleeve or liner and combustion chamber seal

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978840A (en) * 1973-08-21 1976-09-07 Klockner-Humboldt-Deutz Aktiengesellschaft Cylinder head with welded-on cylinder and method of making said welded unit
US5112066A (en) * 1990-12-05 1992-05-12 Arne Remmerfelt Resilient sealing ring
EP0768459A1 (de) * 1995-10-13 1997-04-16 Scania Cv Aktiebolag Abdichtungsvorrichtung für eine Verbrennungskammer einer Brennkraftmaschine
US6036194A (en) * 1996-09-16 2000-03-14 Cummins Engine Company, Inc. Combustion gas seal for an internal combustion engine
US20070170661A1 (en) * 2006-01-26 2007-07-26 Amable Mancenido Fire ring seal
US8978620B2 (en) 2012-02-10 2015-03-17 Cummins Inc. Seatless wet cylinder liner for internal combustion engine
US10316971B2 (en) 2012-07-04 2019-06-11 Mtu Friedrichshafen Gmbh Insert and internal combustion engine comprising insert

Also Published As

Publication number Publication date
NL6710969A (de) 1969-01-14
CH475474A (de) 1969-07-15
FR1570901A (de) 1969-06-13
GB1212053A (en) 1970-11-11

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