EP1391602B1 - A cylinder liner for an internal-combustion engine and an engine provided with such a liner - Google Patents

A cylinder liner for an internal-combustion engine and an engine provided with such a liner Download PDF

Info

Publication number
EP1391602B1
EP1391602B1 EP03017193A EP03017193A EP1391602B1 EP 1391602 B1 EP1391602 B1 EP 1391602B1 EP 03017193 A EP03017193 A EP 03017193A EP 03017193 A EP03017193 A EP 03017193A EP 1391602 B1 EP1391602 B1 EP 1391602B1
Authority
EP
European Patent Office
Prior art keywords
engine block
liner
cylinder head
cylinder
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.)
Expired - Lifetime
Application number
EP03017193A
Other languages
German (de)
French (fr)
Other versions
EP1391602A1 (en
Inventor
Giancarlo Dellora
Rudolf Ellensohn
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.)
FPT Motorenforschung AG
Iveco SpA
Original Assignee
Iveco Motorenforschung AG
Iveco 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 Iveco Motorenforschung AG, Iveco SpA filed Critical Iveco Motorenforschung AG
Publication of EP1391602A1 publication Critical patent/EP1391602A1/en
Application granted granted Critical
Publication of EP1391602B1 publication Critical patent/EP1391602B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/16—Cylinder liners of wet type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0009—Cylinders, pistons
    • 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

Definitions

  • the present invention relates to a cylinder liner for an internal-combustion engine and an engine comprising such a liner.
  • Internal-combustion engines generally comprise an engine block cast from a suitable metal alloy, generally cast iron or an aluminium alloy, and defining a plurality of cylinders, and a cylinder head which is mounted fluid-tightly on the engine block with the interposition of a gasket.
  • the cylinders are lined internally with respective sleeves or liners which are made from a material (generally special cast iron) designed to resist the mechanical, thermal and chemical stresses to which they are subjected by the gases resulting from combustion; the liners have to undergo high precision machining so as to guide properly the reciprocating motion of the associated piston.
  • a material generally special cast iron
  • the liners are normally provided with an upper outer collar which is accommodated in an annular recess of the engine block surrounding the respective cylinder.
  • the cylinder head has a lower surface which is adapted to be connected with a corresponding upper surface of the engine block with the interposition of a flat gasket.
  • This gasket extends substantially over the entire interface surface between the engine block and the cylinder head, and it is provided with a series of openings corresponding to the cylinders and to the various ducts for the circulation of coolant and lubricant.
  • the known gaskets have elastic annular zones, of increased thickness, which co-operate with the collars of the cylinder liners.
  • DE 35 30 411 and DE 24 42 352 disclose cylinder linings, to be fitted into engine blocks defining cylinders, equipped with elastic elements to improve fluid tightness between the cylinder lining and the cylinder head. However, fluid tightness must be ensured by a rigid seal ring. The proposed solutions are still unsatisfactory for what concerns fluid tightness and ease of machining of the various components.
  • an internal-combustion engine comprising an engine block provided with at least one cylinder, a liner fitted in said cylinder, a cylinder head mounted on said engine block and sealing means interposed between said engine block and said cylinder head so as to provide a gas-tight connection around said cylinder, said sealing means comprising an annular elastic element forming part of said liner and adapted to co-operate fluidtightly with said cylinder head, the liner comprising a cylindrical side wall and a collar extending outwardly from an upper end of the side wall and accommodated in an annular seating of the engine block, said annular elastic element being formed by at least one portion of said collar, characterised in that said elastic element is bounded upwardly by a free surface which projects with respect to an upper surface of said engine block when said elastic element is not deformed and which is adapted to co-operate in a force-fit with said cylinder head following the mounting of said cylinder head on said engine block.
  • the cylinder liner comprises a cylindrical side wall and an upper collar forming a single body with the side wall and accommodated in a seating of the engine block coaxial to the cylinder and integrally defining said elastic element.
  • the reference numeral 5 generally denotes an internal-combustion engine comprising an engine block 6 provided with a plurality of cylinders 7, only one of which is partly illustrated.
  • the engine 5 further comprises a cylinder head 12, partly illustrated, which is adapted to be fastened to the engine block 6 by means of screws (not shown); the cylinder head 12 defines the combustion chambers (not shown for simplicity) and accommodates in known manner the inlet and exhaust valves of the cylinders, which are also not shown.
  • the cylinder head 12 is bounded at the bottom by a lower flat surface 13 adapted to be connected with a corresponding upper flat surface 14 of the engine block 6.
  • the cylinder 7 is lined internally with a liner 8 comprising a cylindrical side wall 9 and an outer annular collar 10 which is securely fastened to an upper end of the side wall 9.
  • the collar 10 can be integral with the side wall 9, as shown in the drawings, or applied thereto.
  • the collar 10 is accommodated in an annular seating 17 of the engine block 6, which is coaxial to the cylinder 7 and which is defined by a recess in the upper surface 14 surrounding the cylinder 7, and it abuts against a shoulder 18 downwardly delimiting the seating 17.
  • the side wall 9 is machined internally with the maximum degree of precision, so as to guide with minimum wear the reciprocating motion of a corresponding piston 11 (indicated schematically in dashed line), and it is produced from a material (for example a special cast iron or stainless steel) designed to resist the mechanical and thermal stresses and the chemical corrosion of the combustion gases.
  • a material for example a special cast iron or stainless steel
  • the liner 8 is provided with an annular elastic element 16 adapted to be deformed elastically when the cylinder head 12 is installed on the engine block 6 and to co-operate fluidtightly with the lower surface 13 of the cylinder head 12 as a result of the elastic reaction caused by this deformation.
  • the element 16 is formed by a deformable portion of the collar 10 and has an upper free surface 22 which can be force-fitted against the flat surface 13 of the cylinder head 12.
  • the element 16 is defined by an annular groove 25 which is provided in a lateral surface 20 of the collar 10 and which separates it from a lower portion 24 of the substantially rigid collar 10 co-operating with the shoulder 18 of the engine block 6.
  • the force-fit between the free surface 22 of the elastic element 16 and the surface 13 of the cylinder head is achieved in that the elastic element 16 projects upwards by an amount h with respect to the flat surface 14 of the engine block 6 when the cylinder head 12 is detached from the engine block 6 as in Figure 1 , and the elastic element 16 is in an undeformed condition.
  • the free surface 22 is formed with a slight countersinking ⁇ so as to exhibit, in section, a profile increasing from the inside (where it is substantially level with the upper surface 14 of the engine block 6) to the outside, where it projects with respect to the surface 14.
  • the free surface 22 is disposed level with the surface 14 of the engine block 6 following the elastic deformation caused by the fastening of the cylinder head 12 on the engine block 6, as indicated in Figure 2 .
  • the extent of the projection h with respect to the surface 14 of the engine block 6 may be of the order of magnitude of several hundredths of a millimetre, for example between 0.01 and 0.1 mm, and preferably between 0.03 and 0.065 mm.
  • the countersinking ⁇ of the free surface 22 with respect to a plane perpendicular to the axis of the liner 8 may be between 1° and 3°and, preferably, equal to about 2°.
  • the elastic element 16 bends and brings the free surface 22 level with the flat surface 14 of the engine block 6. In this way the elastic element 16 exerts an elastic force against the flat surface 13 of the cylinder head 12 so as to ensure a perfect gas-tight seal of the liner 8 of the cylinder 7, at the maximum pressure provided for the operation of the engine 5.
  • combustion gas seal may be achieved, according to the present invention, without the use of a gasket between the engine block 6 and the cylinder head 12 of the engine 5. In this way the problems associated with the use of the above-mentioned conventional means are eliminated.
  • the engine described and, in particular, the liner 8 designed in accordance with the invention can be subject to modifications and improvements without departing from the scope of the claims.
  • the collar 10 and the side wall 9 of the liner 8 can be produced as separate parts and assembled subsequently.
  • the collar 10 and the surface 22 can be of any shape suitable for the purpose.
  • the invention can be applied to various types of internal-combustion engine, diesel or controlled ignition, including air-cooled engines and two-stroke engines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Gasket Seals (AREA)
  • Closures For Containers (AREA)

Abstract

An internal-combustion engine (5) comprising an engine block (6) provided with at least one cylinder (7), a liner (8) fitted in the cylinder (7) and a cylinder head (12) mounted on the engine block (6); the liner (8) comprises a cylindrical side wall (9) and an upper collar (20) accommodated in a seating (17) of the engine block surrounding the cylinder (7) and provided with an elastically deformable portion (16) projecting upwards, in the undeformed condition, beyond an upper surface (14) of the engine block (6) so that when the cylinder head (12) is mounted on the engine block (6) this portion (16) is deformed and co-operates elastically in a fluidtight manner with a lower surface (13) of said cylinder head. <IMAGE>

Description

  • The present invention relates to a cylinder liner for an internal-combustion engine and an engine comprising such a liner.
  • Internal-combustion engines generally comprise an engine block cast from a suitable metal alloy, generally cast iron or an aluminium alloy, and defining a plurality of cylinders, and a cylinder head which is mounted fluid-tightly on the engine block with the interposition of a gasket.
  • The cylinders are lined internally with respective sleeves or liners which are made from a material (generally special cast iron) designed to resist the mechanical, thermal and chemical stresses to which they are subjected by the gases resulting from combustion; the liners have to undergo high precision machining so as to guide properly the reciprocating motion of the associated piston.
  • Furthermore, the liners are normally provided with an upper outer collar which is accommodated in an annular recess of the engine block surrounding the respective cylinder.
  • With a view to achieving the required gas-tightness, the cylinder head has a lower surface which is adapted to be connected with a corresponding upper surface of the engine block with the interposition of a flat gasket. This gasket extends substantially over the entire interface surface between the engine block and the cylinder head, and it is provided with a series of openings corresponding to the cylinders and to the various ducts for the circulation of coolant and lubricant. Advantageously, with a view to ensuring fluidtightness in the annular zone surrounding the cylinders in the presence of gas pressures in the order of 180 bar, the known gaskets have elastic annular zones, of increased thickness, which co-operate with the collars of the cylinder liners.
  • These gaskets are rather expensive and they contribute in a not inconsiderable manner to the overall production costs of the engine and to the possible costs of subsequent servicing operations which involve their replacement.
  • Another problem associated with the use of a gasket is the fact that the tightening of the screws used for clamping the cylinder head on the engine block results in non-uniform distribution of the contact pressures, which is higher in the vicinity of the screws and lower in the intermediate zones.
  • The control of the effective contact pressures on the gasket and, therefore, the efficiency of the seal, is critical and imposes very restricted production tolerances which are difficult and expensive to maintain. DE 35 30 411 and DE 24 42 352 disclose cylinder linings, to be fitted into engine blocks defining cylinders, equipped with elastic elements to improve fluid tightness between the cylinder lining and the cylinder head. However, fluid tightness must be ensured by a rigid seal ring. The proposed solutions are still unsatisfactory for what concerns fluid tightness and ease of machining of the various components.
  • It is the object of the present invention to devise an internal-combustion engine which makes it possible to eliminate the gasket between the engine block and the cylinder head, as well as the problems associated therewith.
  • According to the present invention, this object is achieved by an internal-combustion engine comprising an engine block provided with at least one cylinder, a liner fitted in said cylinder, a cylinder head mounted on said engine block and sealing means interposed between said engine block and said cylinder head so as to provide a gas-tight connection around said cylinder, said sealing means comprising an annular elastic element forming part of said liner and adapted to co-operate fluidtightly with said cylinder head, the liner comprising a cylindrical side wall and a collar extending outwardly from an upper end of the side wall and accommodated in an annular seating of the engine block, said annular elastic element being formed by at least one portion of said collar, characterised in that said elastic element is bounded upwardly by a free surface which projects with respect to an upper surface of said engine block when said elastic element is not deformed and which is adapted to co-operate in a force-fit with said cylinder head following the mounting of said cylinder head on said engine block.
  • According to a preferred embodiment of the invention, the cylinder liner comprises a cylindrical side wall and an upper collar forming a single body with the side wall and accommodated in a seating of the engine block coaxial to the cylinder and integrally defining said elastic element.
  • With a view to a better understanding of the invention a preferred form of embodiment will be described, by way of example below, with reference to the accompanying drawings, in which:
    • Figure 1 is a partial section of an internal-combustion engine with the cylinder head and the engine block separated from one another, and
    • Figure 2 is a section analogous to that in Figure 1, with the cylinder head mounted on the engine block.
  • Referring now to Figures 1 and 2, the reference numeral 5 generally denotes an internal-combustion engine comprising an engine block 6 provided with a plurality of cylinders 7, only one of which is partly illustrated. The engine 5 further comprises a cylinder head 12, partly illustrated, which is adapted to be fastened to the engine block 6 by means of screws (not shown); the cylinder head 12 defines the combustion chambers (not shown for simplicity) and accommodates in known manner the inlet and exhaust valves of the cylinders, which are also not shown. The cylinder head 12 is bounded at the bottom by a lower flat surface 13 adapted to be connected with a corresponding upper flat surface 14 of the engine block 6.
  • The cylinder 7 is lined internally with a liner 8 comprising a cylindrical side wall 9 and an outer annular collar 10 which is securely fastened to an upper end of the side wall 9. The collar 10 can be integral with the side wall 9, as shown in the drawings, or applied thereto.
  • The collar 10 is accommodated in an annular seating 17 of the engine block 6, which is coaxial to the cylinder 7 and which is defined by a recess in the upper surface 14 surrounding the cylinder 7, and it abuts against a shoulder 18 downwardly delimiting the seating 17.
  • The side wall 9 is machined internally with the maximum degree of precision, so as to guide with minimum wear the reciprocating motion of a corresponding piston 11 (indicated schematically in dashed line), and it is produced from a material (for example a special cast iron or stainless steel) designed to resist the mechanical and thermal stresses and the chemical corrosion of the combustion gases.
  • According to the invention, the liner 8 is provided with an annular elastic element 16 adapted to be deformed elastically when the cylinder head 12 is installed on the engine block 6 and to co-operate fluidtightly with the lower surface 13 of the cylinder head 12 as a result of the elastic reaction caused by this deformation.
  • Preferably, the element 16 is formed by a deformable portion of the collar 10 and has an upper free surface 22 which can be force-fitted against the flat surface 13 of the cylinder head 12. Advantageously, the element 16 is defined by an annular groove 25 which is provided in a lateral surface 20 of the collar 10 and which separates it from a lower portion 24 of the substantially rigid collar 10 co-operating with the shoulder 18 of the engine block 6.
  • According to the preferred embodiment illustrated, the force-fit between the free surface 22 of the elastic element 16 and the surface 13 of the cylinder head is achieved in that the elastic element 16 projects upwards by an amount h with respect to the flat surface 14 of the engine block 6 when the cylinder head 12 is detached from the engine block 6 as in Figure 1, and the elastic element 16 is in an undeformed condition. In particular, the free surface 22 is formed with a slight countersinking α so as to exhibit, in section, a profile increasing from the inside (where it is substantially level with the upper surface 14 of the engine block 6) to the outside, where it projects with respect to the surface 14.
  • The free surface 22 is disposed level with the surface 14 of the engine block 6 following the elastic deformation caused by the fastening of the cylinder head 12 on the engine block 6, as indicated in Figure 2.
  • To achieve a gas-tight seal at the maximum pressures which can be attained inside the cylinders of modern diesel engines, advantageously the extent of the projection h with respect to the surface 14 of the engine block 6 may be of the order of magnitude of several hundredths of a millimetre, for example between 0.01 and 0.1 mm, and preferably between 0.03 and 0.065 mm. In turn, the countersinking α of the free surface 22 with respect to a plane perpendicular to the axis of the liner 8 may be between 1° and 3°and, preferably, equal to about 2°.
  • When the cylinder head 12 is being tightened on the engine block 6, the elastic element 16 bends and brings the free surface 22 level with the flat surface 14 of the engine block 6. In this way the elastic element 16 exerts an elastic force against the flat surface 13 of the cylinder head 12 so as to ensure a perfect gas-tight seal of the liner 8 of the cylinder 7, at the maximum pressure provided for the operation of the engine 5.
  • With a view to compensating for any production tolerances between the height of the seating 17 of the engine block 6 and that of the collar 10 of the liner 8, it is possible to provide between the collar 10 and the shoulder 18 of the seating 17 a compensating thickness which is known per se and is not indicated in the drawings.
  • It is evident from the foregoing that the combustion gas seal may be achieved, according to the present invention, without the use of a gasket between the engine block 6 and the cylinder head 12 of the engine 5. In this way the problems associated with the use of the above-mentioned conventional means are eliminated.
  • Optionally, to ensure a seal between the engine block 6 and the cylinder head 12 around the ducts for the coolant and the lubricating oil, which are less critical, it is possible to use an adhesive or simple sealing rings of the type known as O-rings.
  • It is evident that the engine described and, in particular, the liner 8 designed in accordance with the invention, can be subject to modifications and improvements without departing from the scope of the claims. For example, the collar 10 and the side wall 9 of the liner 8 can be produced as separate parts and assembled subsequently. The collar 10 and the surface 22 can be of any shape suitable for the purpose.
  • Finally, the invention can be applied to various types of internal-combustion engine, diesel or controlled ignition, including air-cooled engines and two-stroke engines.

Claims (10)

  1. An internal-combustion engine (5) comprising an engine block (6) provided with at least one cylinder (7), a liner (8) fitted in said cylinder (7), a cylinder head (12) mounted on said engine block (6) and sealing means (16) interposed between said engine block (6) and said cylinder head (12) so as to provide a gas-tight connection around said cylinder (7), said sealing means comprising an annular elastic element (16) forming part of said liner (8) and adapted to co-operate fluidtightly with said cylinder head (12), the liner (8) comprising a cylindrical side wall (9) and a collar (10) extending outwardly from an upper end of the side wall (9) and accommodated in an annular seating (17) of the engine block (6), said annular elastic element being formed by at least one portion of said collar (10), characterised in that said elastic element (16) is bounded upwardly by a free surface which projects with respect to an upper surface of said engine block (6) when said elastic element (16) is not deformed and which is adapted to co-operate in a force-fit with said cylinder head following the mounting of said cylinder head (12) on said engine block.
  2. An engine according to claim 1, characterised in that said collar (10) has a peripheral annular groove which defines an elastically deformable upper portion of said collar forming said annular elastic element, and a lower portion arranged to abut against a lower shoulder of said seating.
  3. An engine according to any one of the preceding claims, characterised in that said free surface (22) has a countersinking (α) with a profile increasing from the inside towards the outside so as to project with respect to the upper surface (14) of said engine block (6) along an outer edge thereof.
  4. An engine according to claim 3, characterised in that said countersinking (α) is between 1° and 3°.
  5. An engine according to any one of the preceding claims, characterised in that said free surface (22) projects with respect to the upper surface (14) of said engine block by an amount of between 0.01 and 0.1 mm.
  6. A liner (8) for a cylinder (7) of an internal-combustion engine (5) provided with a engine block (6) defining said cylinder (7) and with a cylinder head (12), said liner comprising an annular elastic element (16) adapted to co-operate fluidtightly with said cylinder head (12) of said engine (5), characterised in that said elastic element (16) is bounded upwardly by a free surface (22) adapted to cooperate in a force-fit with said cylinder head (12) following the mounting of said cylinder head (12) on said engine block (6).
  7. A liner according to claim 6, characterised by comprising a cylinder side wall (9) and a collar (10) extending externally from an upper end of the side wall (9), said annular elastic element (16) being formed by at least one portion of said collar (10).
  8. A liner according to claim 7, characterised in that said collar (10) has a peripheral annular groove (25) which defines an elastically deformable upper portion of said collar (10), forming said annular elastic element (16), and a lower portion (24) adapted to be arranged in abutment against a lower shoulder of a seating (17) of said engine block (6).
  9. A liner according to any one of claims 6 to 8, characterised in that said free surface (22) has a countersinking (a) with a profile increasing from the inside towards the outside.
  10. A liner according to claim 9, characterised in that said countersinking (α) is between 1° and 3°.
EP03017193A 2002-08-23 2003-07-29 A cylinder liner for an internal-combustion engine and an engine provided with such a liner Expired - Lifetime EP1391602B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000748A ITTO20020748A1 (en) 2002-08-23 2002-08-23 COATING BARREL OF A CYLINDER OF AN ENGINE A
ITTO20020748 2002-08-23

Publications (2)

Publication Number Publication Date
EP1391602A1 EP1391602A1 (en) 2004-02-25
EP1391602B1 true EP1391602B1 (en) 2008-08-20

Family

ID=11459589

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03017193A Expired - Lifetime EP1391602B1 (en) 2002-08-23 2003-07-29 A cylinder liner for an internal-combustion engine and an engine provided with such a liner

Country Status (5)

Country Link
EP (1) EP1391602B1 (en)
AT (1) ATE405739T1 (en)
DE (1) DE60323019D1 (en)
ES (1) ES2312696T3 (en)
IT (1) ITTO20020748A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005048537A1 (en) * 2005-10-11 2007-04-19 Daimlerchrysler Ag Internal combustion engine, has cylinder with cylinder sleeve that is supported at side on circular balcony in cylinder housing, where sleeve contacts contact surface of balcony in cylinder housing only in sections in non-deformed condition

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1209373B (en) * 1960-03-03 1966-01-20 Daimler Benz Ag Cylinder liner, especially for internal combustion engines
DE2442352C2 (en) * 1974-09-04 1984-11-15 Daimler-Benz Ag, 7000 Stuttgart Cylinder liner in a cylinder block of an internal combustion engine
DE2442738A1 (en) * 1974-09-06 1976-03-18 Daimler Benz Ag Cylinder head seal for combustion engines - consists of 'U' section placed in annular groove
DE3530411A1 (en) * 1985-08-26 1987-02-26 Kloeckner Humboldt Deutz Ag Cylinder liner for an internal combustion engine

Also Published As

Publication number Publication date
ITTO20020748A0 (en) 2002-08-23
ITTO20020748A1 (en) 2004-02-24
DE60323019D1 (en) 2008-10-02
ES2312696T3 (en) 2009-03-01
ATE405739T1 (en) 2008-09-15
EP1391602A1 (en) 2004-02-25

Similar Documents

Publication Publication Date Title
US5003934A (en) Hood covering the space between cylinder banks of an internal-combustion engine which are arranged in a V-shape
US6116198A (en) Replaceable cylinder liner with improved cooling
US4616603A (en) Cylinder liner for a multi-cylinder internal combustion engine and an engine block therefor
US5402754A (en) Wet cylinder liner
GB2077352A (en) Oil cooled internal combustion engine
US6206381B1 (en) Multi-layer metal gasket
US3942807A (en) Sealing arrangement
RU1838649C (en) Sealing of cylinder head of piston machine, mainly internal combustion engine
US11035319B2 (en) Sealing assembly comprising a cylinder head, a cylinder head gasket and a crankcase
US5873578A (en) Gasket for internal combustion engine and method for forming same
EP1391602B1 (en) A cylinder liner for an internal-combustion engine and an engine provided with such a liner
US20070170661A1 (en) Fire ring seal
JPH07317514A (en) Installing method of ceramic valve guide assembled body
EP1391603B1 (en) A cylinder liner for an internal-combustion engine, its method of production and an engine comprising such a liner
US5970941A (en) Cylinder liner connecting arrangement and method
CN112901362B (en) Engine cylinder liner with liner capture and system
JPH05187309A (en) Cylinder structure of internal combustion engine
KR101458727B1 (en) Cylinder liner
EP2359034B1 (en) Sealing system and cylinder head gasket for a reciprocating piston combustion engine
US7353793B1 (en) Hold down plate for securing a component
US4191156A (en) Two-stroke, water-cooled internal combustion engine having the cylinder liners removable from the cylinder block
US20040069253A1 (en) Cylinder liner
EP0208349A2 (en) Asbestos-free sealing gasket for the cylinder head of an internal combustion engine
EP0911509B1 (en) Engines of reciprocating piston type
CN1985111A (en) Sealing system for an internal combustion engine with a divided casting enclosure

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ELLENSOHN, RUDOLF

Inventor name: DELLORA, GIANCARLO

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: IVECO MOTORENFORSCHUNG AG

Owner name: IVECO S.P.A.

17P Request for examination filed

Effective date: 20040820

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20070420

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60323019

Country of ref document: DE

Date of ref document: 20081002

Kind code of ref document: P

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: N&G PATENT SERVICES SA

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080820

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080820

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080820

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080820

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2312696

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080820

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080820

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080820

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080820

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080820

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090120

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20090525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080820

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090221

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20110616

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080820

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080820

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: IVECO S.P.A., CH

Free format text: FORMER OWNER: IVECO MOTORENFORSCHUNG AG, IT

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: IVECO S.P.A., CH

Free format text: FORMER OWNER: IVECO MOTORENFORSCHUNG AG, IT

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: FPT MOTORENFORSCHUNG AG

Effective date: 20130225

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 60323019

Country of ref document: DE

Representative=s name: MANITZ, FINSTERWALD & PARTNER GBR, DE

Effective date: 20130218

Ref country code: DE

Ref legal event code: R081

Ref document number: 60323019

Country of ref document: DE

Owner name: IVECO S.P.A., IT

Free format text: FORMER OWNER: IVECO S.P.A., IVECO MOTORENFORSCHUNG AG, , CH

Effective date: 20130218

Ref country code: DE

Ref legal event code: R081

Ref document number: 60323019

Country of ref document: DE

Owner name: FPT MOTORENFORSCHUNG AG, CH

Free format text: FORMER OWNER: IVECO S.P.A., IVECO MOTORENFORSCHUNG AG, , CH

Effective date: 20130218

Ref country code: DE

Ref legal event code: R081

Ref document number: 60323019

Country of ref document: DE

Owner name: FPT MOTORENFORSCHUNG AG, CH

Free format text: FORMER OWNERS: IVECO S.P.A., TORINO, IT; IVECO MOTORENFORSCHUNG AG, ARBON, CH

Effective date: 20130218

Ref country code: DE

Ref legal event code: R081

Ref document number: 60323019

Country of ref document: DE

Owner name: IVECO S.P.A., IT

Free format text: FORMER OWNERS: IVECO S.P.A., TORINO, IT; IVECO MOTORENFORSCHUNG AG, ARBON, CH

Effective date: 20130218

Ref country code: DE

Ref legal event code: R082

Ref document number: 60323019

Country of ref document: DE

Representative=s name: MANITZ FINSTERWALD PATENTANWAELTE PARTMBB, DE

Effective date: 20130218

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20170613

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20170725

Year of fee payment: 15

Ref country code: ES

Payment date: 20170801

Year of fee payment: 15

Ref country code: GB

Payment date: 20170726

Year of fee payment: 15

Ref country code: CH

Payment date: 20170712

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20170711

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60323019

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20180729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180731

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180731

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190201

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180730

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20190917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180730

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20220715

Year of fee payment: 20

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230519