EP3150299B1 - Zylinderkopf, brennkraftmaschine damit und kern zum formen eines ansaugkanals - Google Patents

Zylinderkopf, brennkraftmaschine damit und kern zum formen eines ansaugkanals Download PDF

Info

Publication number
EP3150299B1
EP3150299B1 EP15799236.3A EP15799236A EP3150299B1 EP 3150299 B1 EP3150299 B1 EP 3150299B1 EP 15799236 A EP15799236 A EP 15799236A EP 3150299 B1 EP3150299 B1 EP 3150299B1
Authority
EP
European Patent Office
Prior art keywords
intake
flat portion
port
cylinder head
attachment hole
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
EP15799236.3A
Other languages
English (en)
French (fr)
Other versions
EP3150299A4 (de
EP3150299A1 (de
Inventor
Daichi ABE
Takashi Satake
Koichi Tokura
Nobuo IWAMURO
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.)
Aichi Machine Industry Co Ltd
Original Assignee
Aichi Machine Industry Co Ltd
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 Aichi Machine Industry Co Ltd filed Critical Aichi Machine Industry Co Ltd
Publication of EP3150299A1 publication Critical patent/EP3150299A1/de
Publication of EP3150299A4 publication Critical patent/EP3150299A4/de
Application granted granted Critical
Publication of EP3150299B1 publication Critical patent/EP3150299B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/22—Moulds for peculiarly-shaped castings
    • B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
    • 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 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4235—Shape or arrangement of intake or exhaust channels in cylinder heads of intake channels
    • 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 
    • F02F1/24—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 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel

Definitions

  • the present invention relates to a cylinder head including a combustion-chamber forming part configured to form a combustion chamber, an intake port communicating with the combustion-chamber forming part, and an attachment hole at which an injector configured to inject fluid is attached, and an internal combustion engine equipped with the cylinder head.
  • the amounts of fuel to be injected from the injectors can be controlled according to the flow rates of intake air passing through the intake ports. Hence, excessive injection of fuel to the intake ports can be prevented. This is intended to improve fuel economy.
  • JP 2005 105946 A discloses a cylinder head comprising a combustion-chamber forming part configured to form a combustion chamber, an intake port communicating with the combustion-chamber forming part, and an attachment hole at which an injector configured to inject fuel is attached.
  • JP 2011 149309 A and JP H08 14048 A each disclose a cylinder head with an attachment hole for an injector in the flat upper surface of the intake port.
  • the shape of a cross section of an intake port perpendicular to the flowing direction of intake air is circular or elliptic to obtain a smooth flow of intake air.
  • an injector is attached at an angle to the axis of the intake port to inject fuel along the flow of intake air so that the flow of intake air is not disturbed by the fuel injected from the injector.
  • a boss part for working of the attachment hole is generally formed integrally with an intake-port molding core in consideration of workability.
  • the boss part forms a recessed portion in the intake port, it preferably has the minimum shape, for example, has a circular cross section perpendicular to the extending direction of the boss part.
  • the boss part having the circular cross section is formed in the intake-port molding core having a circular cross section, a large undercut portion is formed, and this deteriorates productivity.
  • the boss part can be formed integrally with the intake-port molding core so that the undercut portion is not provided.
  • a large portion unnecessary as the function of the boss part (a portion that fills the undercut portion) is formed in the boss part, and the large unnecessary portion forms a large dead volume at an attachment hole of a cylinder head as a product. Since the large dead volume disturbs the flow of intake air in the intake port, and mixing failure of fuel and intake air occurs. This reduces combustion efficiency and deteriorates fuel economy. In this regard, there is more room for improvement in the above-described cylinder head.
  • the present invention has been made in view of the above, and an object of the invention is to provide a technique that can further improve fuel economy.
  • a cylinder head, and an internal combustion engine equipped with the cylinder head according to the present invention adopt the following means to achieve the above object.
  • a cylinder head includes a combustion-chamber forming part configured to form a combustion chamber, an intake port communicating with the combustion-chamber forming part, and an attachment hole at which an injector configured to inject fuel is attached.
  • the intake port has a flat portion that forms a straight line in a cross section perpendicular to a longitudinal direction of the intake port. At least a part of a connecting portion of the attachment hole to the intake port is provided in the flat portion, the connecting portion being a part connecting to the intake port.
  • the connecting portion of the attachment hole to the intake port is provided in the flat portion, at least a part of an opening of the attachment hole in the intake port is provided in the flat portion of the intake port. That is, when the attachment hole is formed using an intake-port molding core provided integrally with a boss part for working of the attachment hole in consideration of workability of the attachment hole, at least a part of the boss part for working of the attachment hole is formed in a flat portion of the intake-port molding core corresponding to the flat portion of the intake port. Hence, an unnecessary portion formed in the boss part, that is, a portion that fills an undercut portion can be made smaller than when the boss part is entirely formed in an intake-port molding core of circular cross section.
  • the size of a dead volume formed at the attachment hole can be minimized.
  • turbulence of intake air flowing in the intake port can be suppressed, and mixability of fuel and intake air can be enhanced to enhance combustion efficiency. As a result, fuel economy can be improved further.
  • the intake port includes first and second intake ports communicating with the same combustion-chamber forming part.
  • the flat portion includes a first flat portion provided at the first intake port and a second flat portion provided at the second intake port.
  • the attachment hole includes a first attachment hole and a second attachment hole. The cylinder head is configured such that a center axis of the first attachment hole intersects the first flat portion, and a center axis of the second attachment hole intersects the second flat portion.
  • an injector is disposed at each intake port, the amount of fuel to be injected from the injector can be controlled according to the flow rate of intake air passing through the intake port.
  • the center axis of each attachment hole intersects the corresponding flat portion, an opening of the attachment hole in the intake port is at least partly formed in the flat portion of the intake port. That is, when the attachment holes are formed using an intake-port molding core provided integrally with boss parts for working of the attachment holes in consideration of workability of the attachment holes, the boss parts are at least partly provided in the flat portions of the intake-port molding core.
  • each boss part that is, a portion that fills an undercut portion
  • the size of a dead volume formed in each attachment hole can be suppressed.
  • turbulence of intake air flowing in each intake port can be further suppressed, and mixability of fuel and intake air can be enhanced to improve combustion efficiency. As a result, fuel economy can be improved further.
  • the first and second intake ports have first and second quadrangular port regions that are substantially quadrangular in cross sections perpendicular to longitudinal directions of the first and second intake ports, respectively.
  • the first and second flat portions have first and second upper flat portions, first and second lower flat portions, first and second left flat portions, and first and second right flat portions that form upper, lower, left, and right parts of the first and second intake ports, respectively, when the first and second intake ports are viewed from the longitudinal directions of the first and second intake ports.
  • the first and second quadrangular port regions are defined by the first and second upper flat portions, the first and second lower flat portions, the first and second left flat portions, and the first and second right flat portions, respectively, and are arranged in parallel so that the first right flat portion and the second left flat portion are adjacent to each other.
  • the intake ports have their respective quadrangular port regions, and the quadrangular port regions are arranged in parallel so that the first right flat portion that defines the first quadrangular port region and the second left flat portion that defines the second quadrangular port region are adjacent to each other.
  • the intake ports it is possible to adjacently arrange the intake ports while ensuring cross-sectional areas of the intake ports.
  • an opening of the first attachment hole to the first intake port is formed in the first upper flat portion, and an opening of the second attachment hole to the second intake port is formed in the second upper flat portion.
  • mixability of fuel and intake air is enhanced by applying a tumble flow to a fuel-air mixture.
  • more intake air flows on the upper side of an intake port than on the lower side.
  • the first and second attachment holes are open in the first and second upper flat portions on the upper sides of the intake ports where much intake air flows.
  • mixability of the fuel and intake air can be further enhanced in the intake ports. This can further improve combustion efficiency.
  • the first upper flat portion and the first left flat portion are connected by a first curved portion.
  • the second upper flat portion and the second right flat portion are connected by a second curved portion.
  • the opening of the first attachment hole to the first intake port is formed at a position near the first left flat portion in a range out of the first curved portion.
  • the opening of the second attachment hole to the second intake port is formed at a position near the second right flat portion in a range out of the second curved portion.
  • the openings of the attachment holes to the intake ports are in a positional relationship such that the openings are separate from each other in the ranges out of the curved portions. Hence, interference of the injectors can be prevented when the injectors are attached at the attachment holes. Thus, it is possible to improve assemblability while enhancing filling efficiency of intake air.
  • the cylinder head is configured such that a center axis of the first attachment hole intersects the first upper flat portion and a center axis of the second attachment hole intersects the second upper flat portion.
  • At least a part of the connecting portion of the attachment hole to the intake port can be provided in the flat portion.
  • the intake port has a quadrangular port region that is substantially quadrangular in a cross section perpendicular to the longitudinal direction of the intake port.
  • the flat portion includes an upper flat portion, a lower flat portion, a left flat portion, and a right flat portion that form an upper part, a lower part, a left part, and a right part, respectively, of the intake port when the intake port is viewed from the longitudinal direction of the intake port.
  • the quadrangular port region is defined by the upper flat portion, the lower flat portion, the left flat portion, and the right flat portion.
  • an opening of the attachment hole to the intake port is entirely formed in the flat portion.
  • the opening of the attachment hole to the intake port is formed in the upper flat portion.
  • mixability of fuel and intake air is enhanced by applying a tumble flow to a fuel-air mixture. In this case, more intake air flows on the upper side of an intake port than on the lower side.
  • the attachment hole is open in the upper flat portion provided on the upper side of the intake port where much intake air flows. Hence, mixability of fuel and intake air can be further enhanced. This can further enhance combustion efficiency.
  • openings of the first and second attachment holes to the first and second intake ports are entirely formed in the first and second upper flat portions, respectively.
  • "openings to the intake ports are entirely formed in the first and second flat portions" suitably encompasses not only a form in which the openings to the first and second intake ports are entirely formed in the first and second flat portions to the letter, but also a form in which the openings to the first and second intake ports are nearly entirely formed in the first and second flat portions.
  • An internal combustion engine includes any of the above-described cylinder heads, and first and second injectors attached at the first and second attachment holes of the cylinder head, respectively.
  • fuel is injected from the first and second injectors toward intake air flowing in the first and second intake ports of the cylinder head to introduce a mixture of the intake air and the fuel into the combustion chamber.
  • any of the above-described cylinder head is included, effects similar to those of the above-described cylinder head can be provided, for example, turbulence of intake air flowing in the intake port can be suppressed, and mixability of fuel and intake air can be enhanced to improve combustion efficiency.
  • a reference example of an intake-port molding core includes a body part configured to form an intake port in a cylinder head and a boss part configured to form an attachment hole at which an injector is to be attached.
  • the body part has a core flat portion.
  • the boss part is provided integrally with the body part, and at least a part of a connecting portion of the boss part to the body part is provided in the core flat portion.
  • this intake-port molding core since at least a part of the boss part is provided in the core flat portion of the intake-port molding core, an unnecessary portion formed in the boss part, that is, a portion that fills an undercut portion can be made smaller than when the boss part is entirely provided in an intake-port molding core of circular cross section. Therefore, in a cylinder head as a product, the size of a dead volume formed at the attachment hole can be limited. Thus, turbulence of intake air flowing in the intake port can be suppressed, and mixability of fuel and intake air can be enhanced to improve combustion efficiency. As a result, fuel economy can be improved further.
  • a center axis of the boss part intersects the core flat portion.
  • At least a part of the boss part can be provided in the core flat portion of the intake-port molding core.
  • Fig. 1 is a structural view illustrating an outline of a structure of an internal combustion engine 1 equipped with a cylinder head 20 according to an embodiment of the present invention.
  • the internal combustion engine 1 equipped with the cylinder head 20 of the embodiment includes the cylinder head 20 of the embodiment, a rocker cover 2 attached to an upper part of the cylinder head 20, an intake manifold 4 attached to a side wall of the cylinder head 20, an injector 6 attached to the side wall of the cylinder head 20 near the intake manifold 4, a cylinder block 8 attached to a lower part of the cylinder head 20, an upper oil pan 10 attached to a lower part of the cylinder block 8, and a lower oil pan 12 attached to a lower part of the upper oil pan 10.
  • the internal combustion engine 1 is configured as an in-line four-cylinder engine in which four cylinders are arranged in line.
  • a side of the rocker cover 2 that is, an upper side of the plane of Fig. 1 is defined as “upper side” or “upward side”
  • a side of the lower oil pan 12 that is, a lower side of the plane of Fig. 1 is defined as “lower side” or “downward side.”
  • combustion-chamber forming recesses 22 that form combustion chambers CC are provided in a bottom surface of the cylinder head 20.
  • the cylinder head 20 also includes intake ports 24 that are each open at one end to the corresponding combustion-chamber forming recess 22 and are each open at the other end to the outside of the cylinder head 20.
  • Each of the intake ports 24 is composed of a collection port 24a provided on the upstream side in the flowing direction of intake air and two branch ports 24b and 24c branching off from the collection port 24a and independently communicating with the corresponding combustion-chamber forming recess 22.
  • the collection port 24a is open in a flange surface 25a of an intake-manifold attachment part 25 provided in the cylinder head 20.
  • combustion-chamber forming recesses 22 are provided as an example of an implementation corresponding to "combustion-chamber forming part" in the present invention, and the branch ports 24b and 24c are provided as an example of an implementation corresponding to "first intake port” and "second intake port” in the present invention.
  • each intake port 24 has a quadrangular port region that is substantially quadrangular in a cross section perpendicular to the longitudinal direction (flowing direction of intake air).
  • the quadrangular port region extends from the collection port 24a to the branch ports 24b and 24c in the intake port 24.
  • the quadrangular port region is defined by an upper flat wall portion 122a that forms an upper part of the port, a lower flat wall portion 124a that forms a lower part of the port, a left flat wall portion 126a that forms a left part of the port, and a right flat wall portion 128a that forms a right part of the port.
  • quadrangular port regions are defined by upper flat wall portions 122b and 122c that form upper parts of the ports, lower flat wall portions 124b and 124c that form lower parts of the ports, left flat wall portions 126b and 126c that form left parts of the ports, and right flat wall portions 128b and 128c that form right parts of the ports.
  • the upper flat wall portions 122a and 122b and the left flat wall portions 126a and 126b are connected by curved wall portions 130
  • the upper flat wall portions 122a and 122c and the right flat wall portions 128a and 128c are connected by curved wall portions 130
  • the lower flat wall portions 124a and 124b and the left flat wall portions 126a and 126b are connected by curved wall portions 130
  • the lower flat wall portions 124a and 124c and the right flat wall portions 128a and 128c are connected by curved wall portions 130.
  • the curved wall portions 130 are provided as an example of an implementation corresponding to "first curved portion" and "second curved portion" in the present invention.
  • the right flat wall portion 128b and the left flat wall portion 126c are adjacently arranged as right and left wall portions of a common wall part that separates the branch ports 24b and 24c.
  • the branch ports 24b and 24c are arranged in parallel.
  • each intake port 24 gradually changes from the substantially quadrangular shape in the branch ports 24b and 24c, and the intake port 24 finally opens with a circular cross section to the corresponding combustion-chamber forming recess 22.
  • the quadrangular port region is provided as an example of an implementation corresponding to "quadrangular port region" and “first and second quadrangular port regions” in the present invention.
  • the upper flat wall portions 122a, 122b, and 122c, the lower flat wall portions 124a, 124b, and 124c, the left flat wall portions 126a, 126b, and 126c, and the right flat wall portions 128a, 128b, and 128c are provided as examples of implementations corresponding to "flat portion” or corresponding to "upper flat portion”, “lower flat portion”, “left flat portion”, and “right flat portion” in the present invention, respectively.
  • the upper flat wall portions 122b and 122c, the lower flat wall portions 124b and 124c, the left flat wall portions 126b and 126c, and the right flat wall portions 128b and 128c are provided as examples of implementations corresponding to "first and second flat portions” or corresponding to "first and second upper flat portions”, “first and second lower flat portions”, “first and second left flat portions”, and “first and second right flat portions” in the present invention, respectively.
  • the cylinder head 20 includes injector attachment holes 26 at which injectors 6 are to be attached.
  • the injector attachment holes 26 penetrate the cylinder head 20 from an upper part of the intake-manifold attachment part 25 to the intake ports 24.
  • One injector attachment hole 26 is provided in each of the branch ports 24b and 24c.
  • the cylinder head 20 is configured as a so-called twin-injector system in which fuel can be injected from the injectors 6 via the branch ports 24b and 24c.
  • a large quantity fuel can be supplied without reducing fuel atomizing performance by adopting the twin-injector system. This can stabilize combustion efficiency.
  • the intake manifold 4 is provided with an unillustrated tumble control valve to improve mixability of fuel and intake air. Hence, more intake air flows on the upper sides of the intake ports 24 (collection port 24a, branch ports 24b and 24c) than on the lower side.
  • injectors 6 are attached to the upper side of the intake ports 24 (branch ports 24b and 24c) where much intake air flows, mixability of the fuel and the intake air can be enhanced. This can further enhance combustion efficiency.
  • the injector attachment holes 26 are provided as an example of an implementation corresponding to "attachment hole”, "first attachment hole”, and "second attachment hole” in the present invention.
  • the injector attachment holes 26 have center axes CL1 and CL2.
  • the injector attachment holes 26 open to the branch ports 24b and 24c in a manner such that the center axes CL1 and CL2 intersect the upper flat wall portions 122b and 122c of the branch ports 24b and 24c, respectively.
  • the openings of the injector attachment holes 26 to the branch ports 24b and 24c are nearly entirely provided in the upper flat wall portions 122b and 122c. Further, the injector attachment hole 26 at the branch port 24b is provided at a position near the left flat wall portion 126b, and the injector attachment hole 26 at the branch port 24c is provided at a position near the right flat wall portion 128c.
  • center axes CL1 and CL2 are provided as an example of an implementation corresponding to "center axis", “first center axis”, and “second center axis” in the present invention.
  • the injector attachment holes 26 are formed in the cylinder head 20 by using an intake-port molding core 60 illustrated in Figs. 6 and 7 .
  • the intake-port molding core includes a body part 62 for forming an intake port 24 in the cylinder head 20 and boss parts 64 for forming injector attachment holes 26 in the cylinder head 20.
  • the body part 62 includes a collection-port forming portion 62a for forming a collection port 24a in the cylinder head 20 and branch-port forming portions 62b and 62c for forming branch ports 24b and 24c.
  • the body part 62 has a quadrangular region that is substantially quadrangular in a cross section perpendicular to the longitudinal direction (right-left direction in Fig. 6 ) and that extends from the collection-port forming portion 62a to the branch-port forming portions 62b and 62c.
  • the collection-port forming portion 62a has an upper flat portion 162a, a lower flat portion 164a, a left flat portion 166a, and a right flat portion 168a for forming an upper flat wall portion 122a, a lower flat wall portion 124a, a left flat wall portion 126a, and a right flat wall portion 128c, respectively, in the collection port 24a of the intake port 24.
  • the branch port forming portions 62b and 62c respectively have upper flat portions 162b and 162c, lower flat portions 164b and 164c, left flat portions 166b and 166c, and right flat portions 168b and 168c for forming upper flat wall portions 122b and 122c, lower flat wall portions 124b and 124c, left flat wall portions 126b and 126c, and right flat wall portions 128b and 128c in the branch ports 24b and 24c of the intake port 24.
  • the branch-port forming portions 62b and 62c are configured so that the cross-sectional shape thereof gradually changes from a substantially quadrangular shape to a circular shape toward distal ends (sides opposite from the collection-port forming portion 62a).
  • the upper flat portions 162a, 162b, and 162c are connected to the left flat portions 166a, 166b, and 166c and the right flat portions 168a, 168b, and 168c by curved portions 170.
  • the lower flat portions 164a, 164b, and 164c are connected to the left flat portions 166a, 166b, and 166c and the right flat portions 168a, 168b, and 168c by curved portions 170.
  • curved wall portions 130 are formed in the intake port 24 (collection port 24a, branch ports 24b and 24c) of the cylinder head 20.
  • the upper flat portions 162a, 162b, and 162c, the lower flat portions 164a, 164b, and 164c, the left flat portions 166a, 166b, and 166c, and the right flat portions 168a, 168b, and 168c are provided as an example of an implementation corresponding to "flat portion" in the present invention.
  • the boss parts 64 project integrally from the upper flat portions 162b and 162c of the branch-port forming portions 62b and 62c.
  • the boss parts 64 have center axes CL3 and CL4 corresponding to the center axes CL1 and CL2 of the injector attachment holes 26.
  • connecting portions 68 of the boss parts 64 to the branch-port forming portions 62b and 62c are nearly entirely provided in the upper flat portions 162b and 162c.
  • the connecting portion 68 to the branch-port forming portion 62b is provided at a position near the left flat portion 166b, the connecting portion 68 being a part connecting to the branch-port forming portion 62b.
  • the connecting portion 68 to the branch-port forming portion 62c is provided at a position near the right flat portion 168c, the connecting portion 68 being a part connecting to the branch-port forming portion 62c.
  • an intake port 24 and recessed portions 63 that form parts of injector attachment holes 26 are formed in the cylinder head 20.
  • the injector attachment holes 26 are formed by boring with an unillustrated drill from an upper part of the intake-manifold attachment part 25 to the recessed portions 63 (two-dot chain line in Fig. 10 ).
  • the recessed portions 63 are formed as receiving holes in the cylinder head 20 beforehand in order to improve workability of the injector attachment holes 26 to be worked at an angle to the branch ports 24b and 24c.
  • the size of cross sections of the recessed portions 63 perpendicular to the center axes CL1 and CL2 is slightly larger than the outer size of the injectors 6.
  • the intake-port molding core 60 is molded by a core molding die 80.
  • the core molding die 80 includes an upper die 82 having an upper cavity UC for molding an upper part of the intake-port molding core 60 including the boss parts 64, and a lower die 84 having a lower cavity LC for molding a lower part of the intake-port molding core 60.
  • the core molding die 80 is configured so that the parting direction is the up-down direction, that is, the projecting direction of boss-part cavities BC for molding the boss parts 64 (up-down direction in Fig. 10 ).
  • the cross-sectional shape of the boss parts 64 of the intake-port molding core 60 is preferably a substantially circular shape concentric with the outer shape of the distal end portions of the injectors 6 (two-dot chain thin lines in Fig. 11 ), as shown by two-dot chain thick lines in Fig. 11 .
  • the cross sections of the boss parts 64 are shaped like a longitudinal circle because they are perpendicular to the longitudinal direction of the intake-port molding core 60.
  • the cross-sectional shape of the boss parts 64 is circular, the boss parts 64 and the body part 62 are connected to form undercut portions 90 at between the boss parts 64 and the body part 62, and the intake-port molding core 60 cannot be molded only by the upper die 82 and the lower die 84.
  • To mold the intake-port molding core 60 it is necessary to add a slide die to the core molding die 80.
  • the core molding die 80 includes the slide die in addition to the upper die 82 and the lower die 84 in this way, not only the structure of the die is complicated, but also moldability of the intake-port molding core 60 deteriorates. This leads to an increase in cost.
  • the boss-part cavities BC are not provided with undercut portions 90 in the embodiment.
  • the boss parts 64 of the intake-port molding core 60 are provided with portions 64a that are unnecessary as the function of the boss parts 64.
  • the unnecessary portions 64a formed in the boss parts 64 form portions that are not related to working of the injector attachment holes 26 and attachment of the injectors 6, that is, so-called dead volumes 92 in the intake port 24, particularly in the recessed portion 63. Since the dead volumes 92 disturb the flow of intake air in the intake port 24, particularly in the branch ports 24b and 24c, it is preferable to limit the size of the dead volumes 92.
  • the openings of the recessed portions 63 to the branch ports 24b and 24c in other words, the openings of the injector attachment holes 26 to the branch ports 24b and 24c are nearly entirely formed in the upper flat wall portions 122b and 122c. Hence, the size of the dead volumes 92 can be limited.
  • recessed portions 63A for improving workability of the injectors 6 are formed by the boss parts in an intake port 24A having an elliptic cross section perpendicular to the longitudinal direction (flowing direction of intake air) as in a conventional structure, the recessed portions 63A are open in curved surfaces as illustrated in Figs. 14 and 15 . Therefore, the connection distance of the recessed portions 63A to the intake port 24A becomes long, and this increases the size of dead volumes 92A.
  • the connection distance of the recessed portions 63 to the intake port 24 can be made shorter than in the conventional structure (intake port of circular cross section). As a result, the size of the dead volumes 92 can be limited.
  • each intake port 24 has a quadrangular port region that is substantially quadrangular in the cross section perpendicular to the longitudinal direction (flowing direction of intake air), and the openings of the injector attachment holes 26 to the branch ports 24b and 24c are nearly entirely provided in the upper flat wall portions 122b and 122c in the quadrangular port regions of the branch ports 24b and 24c.
  • the size of the dead volumes 92 can be made smaller than when the injector attachment holes are formed in the intake port having a circular cross section perpendicular to the longitudinal direction (flowing direction of intake air).
  • each intake port 24 since the quadrangular port region is provided in each intake port 24, a passage cross-sectional area larger than that of the intake port of circular cross section can be ensured in the same space. Moreover, since the branch ports 24b and 24c also have the quadrangular port regions, they can be adjacently arranged. Thus, it is possible to improve filling efficiency of intake air while suppressing the increase in size of the cylinder head 20 itself.
  • the intake manifold 4 is provided with the unillustrated tumble control valve, and the injectors 6 are attached to the upper side of the intake ports 24 (branch ports 24b and 24c).
  • the injectors 6 are attached to the upper side of the intake ports 24 (branch ports 24b and 24c).
  • fuel can be injected at the upper side of the intake ports 24 (branch ports 24b and 24c) through which much intake air flows, and mixability of the fuel and the intake air can be enhanced. This can further improve combustion efficiency.
  • the cylinder head 20 adopts the so-called twin injector system in which two branch ports 24b and 24c are connected to one combustion chamber CC and the injector 6 is attached to each of the branch ports 24b and 24c.
  • twin injector system in which two branch ports 24b and 24c are connected to one combustion chamber CC and the injector 6 is attached to each of the branch ports 24b and 24c.
  • the opening of the injector attachment hole 26 to the branch port 24b in the branch port 24b is provided at the position near the left flat wall portion 126b, and the opening of the injector attachment hole 26 to the branch port 24c in the branch port 24c is provided at the position near the right flat wall portion 128c.
  • intake ports 24 have quadrangular port regions in the embodiment, it is only necessary that the intake ports 24 should have flat wall portions for forming straight lines on the attachment side of the injectors 6 in the cross-sectional shape perpendicular to the longitudinal direction (flowing direction of intake air).
  • the opening of the injector attachment hole 26 to the branch port 24b is provided at the position near the left flat wall portion 126b, and the opening of the injector attachment hole 26 to the branch port 24c is provided at the position near the right flat wall portion 128c. That is, the injector attachment holes 26 are provided at the positions as distant from each other as possible.
  • the opening of the injector attachment hole 26 to the branch port 24b may be provided at a position near the left flat wall portion 126b, and the opening of the injector attachment hole 26 to the branch port 24c may be provided at a position near the left flat wall portion 126c.
  • the opening of the injector attachment hole 26 to the branch port 24b may be provided at a position near the right flat wall portions 128b, and the opening of the injector attachment hole 26 to the branch port 24c may be provided at a position near the right flat wall portion 128c.
  • the opening of the injector attachment hole 26 to the branch port 24b may be provided at a position near the right flat wall portion 128b, and the opening of the injector attachment hole 26 to the branch port 24c may be provided at a position near the left flat wall portion 126c. That is, the injector attachment holes 26 may be provided at the positions close to each other.
  • boss parts 64 of the intake-port molding core 60 are provided to form the recessed portions 63 serving as the receiving holes that improve workability of the injector attachment holes 26 in the embodiment, the boss parts 64 may be provided to form the entire injector attachment holes 26.
  • the embodiment shows an example of a mode for carrying out the present invention. Therefore, the present invention is not limited to the constitution of the embodiment.

Claims (4)

  1. Zylinderkopf (20), der einen Brennkammer-Bildungsteil (22), der konfiguriert ist, eine Brennkammer (CC) zu bilden, einen Ansaugkanal (24), der mit dem Brennkammer-Bildungsteil in Verbindung steht, und ein Befestigungsloch (26) aufweist, an dem ein Injektor (6) befestigt ist, der konfiguriert ist, Kraftstoff einzuspritzen,
    wobei:
    der Ansaugkanal einen ebenen Abschnitt (122b, 122c, 124b, 124c, 126b, 126c, 128b, 128b) aufweist, der eine gerade Linie in einem Querschnitt senkrecht zu einer Längsrichtung des Ansaugkanals bildet;
    mindestens ein Teil eines Verbindungsabschnitts (68) des Befestigungslochs zum Ansaugkanal im ebenen Abschnitt vorgesehen ist, wobei der Verbindungsabschnitt ein Teil ist, der mit dem Ansaugkanal verbindet;
    der Ansaugkanal einen ersten und zweiten Ansaugkanal (24b, 24c) aufweist, die mit demselben Brennkammer-Bildungsteil in Verbindung stehen; und
    der ebene Abschnitt einen ersten ebenen Abschnitt (122b, 124b, 126b, 128b), der am ersten Ansaugkanal vorgesehen ist, und einen zweiten ebenen Abschnitt (122c, 124c, 126c, 128c) aufweist, der am zweiten Ansaugkanal vorgesehen ist;
    dadurch gekennzeichnet, dass:
    das Befestigungsloch ein erstes Befestigungsloch (26) und ein zweites Befestigungsloch (26) aufweist;
    der Zylinderkopf so konfiguriert ist, dass sich eine Mittelachse des ersten Befestigungslochs mit dem ersten ebenen Abschnitt schneidet und sich eine Mittelachse des zweiten Befestigungslochs mit dem zweiten ebenen Abschnitt schneidet;
    der erste und zweite Ansaugkanal einen ersten und zweiten viereckigen Kanalbereich aufweisen, die in Querschnitten senkrecht zu den Längsrichtungen des ersten bzw. zweiten Ansaugkanals im Wesentlichen viereckig sind;
    der erste und zweite ebene Abschnitt einen ersten und zweiten oberen ebenen Abschnitt (122b, 122c), einen ersten und zweiten unteren ebenen Abschnitt (124b, 124c), einen ersten und zweiten linken ebenen Abschnitt (126b, 126c) und einen ersten und zweiten rechten ebenen Abschnitt (128b, 128c) aufweisen, die einen oberen, unteren, linken und rechten Teil des ersten bzw. zweiten Ansaugkanals bilden, wenn der erste und zweite Ansaugkanal aus den Längsrichtungen des ersten und zweiten Ansaugkanals betrachtet werden;
    der erste und zweite viereckige Kanalbereich durch den ersten und zweiten oberen ebenen Abschnitt, den ersten und zweiten unteren ebenen Abschnitt, den ersten und zweiten linken ebenen Abschnitt bzw. den ersten und zweiten rechten ebenen Abschnitt definiert sind, und parallel angeordnet sind, so dass der erste rechte ebene Abschnitt und der zweite linke ebene Abschnitt zueinander benachbart sind;
    eine Öffnung des ersten Befestigungslochs zum ersten Ansaugkanal im ersten oberen ebenen Abschnitt ausgebildet ist;
    eine Öffnung des zweiten Befestigungslochs zum zweiten Ansaugkanal im zweiten oberen ebenen Abschnitt ausgebildet ist;
    der erste obere ebene Abschnitt und der erste linke ebene Abschnitt durch einen ersten gekrümmten Abschnitt (130) verbunden sind;
    der zweite obere ebene Abschnitt und der zweite rechte ebene Abschnitt durch einen zweiten gekrümmten Abschnitt (130) verbunden sind;
    die Öffnung des ersten Befestigungslochs zum ersten Ansaugkanal an einer Position nahe dem ersten linken ebenen Abschnitt in einem Bereich außerhalb des ersten gekrümmten Abschnitts ausgebildet ist; und
    die Öffnung des zweiten Befestigungslochs zum zweiten Ansaugkanal an einer Position nahe dem zweiten rechten ebenen Abschnitt in einem Bereich außerhalb des zweite gekrümmten Abschnitts ausgebildet ist.
  2. Zylinderkopf (20) nach Anspruch 1, wobei der Zylinderkopf so konfiguriert ist, dass sich eine Mittelachse des ersten Befestigungslochs (26) mit dem ersten oberen ebenen Abschnitt (122b) schneidet und sich eine Mittelachse des zweiten Befestigungslochs (26) mit dem zweiten oberen ebenen Abschnitt (122c) schneidet.
  3. Zylinderkopf (20) nach Anspruch 1, wobei die Öffnungen des ersten und zweiten Befestigungslochs (26) zum ersten und zweiten Ansaugkanal (24b, 24c) vollständig im ersten bzw. zweiten oberen ebenen Abschnitt (122b, 122c) ausgebildet sind.
  4. Verbrennungsmotor (1), der aufweist:
    den Zylinderkopf (20) nach einem der Ansprüche 1 bis 3; und
    einen ersten und zweiten Injektor (6), die am ersten bzw. zweiten Befestigungsloch (26) des Zylinderkopfes befestigt sind,
    wobei Kraftstoff aus dem ersten und zweiten Injektor zur Ansaugluft eingespritzt wird, die im ersten und zweiten Ansaugkanal (24b, 24c) des Zylinderkopfes strömt, um eine Mischung der Ansaugluft und des Kraftstoffs in die Brennkammer (CC) einzuleiten.
EP15799236.3A 2014-05-26 2015-02-25 Zylinderkopf, brennkraftmaschine damit und kern zum formen eines ansaugkanals Active EP3150299B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014107968 2014-05-26
PCT/JP2015/055349 WO2015182191A1 (ja) 2014-05-26 2015-02-25 シリンダヘッドおよびこれを備える内燃機関ならびに吸気ポート成形用中子

Publications (3)

Publication Number Publication Date
EP3150299A1 EP3150299A1 (de) 2017-04-05
EP3150299A4 EP3150299A4 (de) 2018-01-24
EP3150299B1 true EP3150299B1 (de) 2020-09-02

Family

ID=54698533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15799236.3A Active EP3150299B1 (de) 2014-05-26 2015-02-25 Zylinderkopf, brennkraftmaschine damit und kern zum formen eines ansaugkanals

Country Status (5)

Country Link
EP (1) EP3150299B1 (de)
JP (1) JP6468608B2 (de)
CN (1) CN106457365B (de)
MX (1) MX2016014035A (de)
WO (1) WO2015182191A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105863868B (zh) * 2016-05-04 2021-02-09 广州汽车集团股份有限公司 进气道及涡轮增压汽油发动机燃烧系统
CN113560500A (zh) * 2021-07-07 2021-10-29 上柴动力海安有限公司 一种柴油机缸盖铸造进气道整体芯及其制造工艺

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58167821A (ja) * 1982-03-30 1983-10-04 Toyota Motor Corp 内燃機関の吸気系
JPS60147537A (ja) * 1984-01-13 1985-08-03 Toyota Motor Corp 内燃機関の吸気装置
JPS61255745A (ja) * 1985-05-10 1986-11-13 Honda Motor Co Ltd 分配チヤンバ一体型吸気マニホルドの鋳造方法
JPH06213069A (ja) * 1993-01-14 1994-08-02 Nissan Motor Co Ltd 内燃機関の吸気装置
JPH0814048A (ja) * 1994-06-27 1996-01-16 Mitsubishi Motors Corp 層状燃焼内燃機関
JP3804178B2 (ja) * 1997-04-28 2006-08-02 マツダ株式会社 エンジンの吸気装置
KR20030039466A (ko) * 2001-11-13 2003-05-22 현대자동차주식회사 엔진 흡기포트의 구조
US6886516B2 (en) * 2002-12-20 2005-05-03 Nissan Motor Co., Ltd. Cylinder head of internal combustion engine and method of producing same
JP4147938B2 (ja) * 2002-12-26 2008-09-10 日産自動車株式会社 内燃機関の吸気ポート構造
JP2005105946A (ja) * 2003-09-30 2005-04-21 Mazda Motor Corp エンジンの吸気装置
KR100580493B1 (ko) * 2004-04-23 2006-05-16 현대자동차주식회사 흡/배기 포트 성형용 코어의 구조
JP4400503B2 (ja) * 2005-04-19 2010-01-20 日産自動車株式会社 吸気ポート用の仕切り板、吸気ポート成形用砂中子およびシリンダヘッド
JP2011149309A (ja) * 2010-01-20 2011-08-04 Toyota Motor Corp 内燃機関
JP5308477B2 (ja) * 2011-05-24 2013-10-09 ヤマハ発動機株式会社 ４サイクルエンジン
CN203248264U (zh) * 2013-03-20 2013-10-23 合肥宝发动力技术有限公司 一种用于液化石油气和天然气叉车发动机的气缸盖

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
JP6468608B2 (ja) 2019-02-13
CN106457365A (zh) 2017-02-22
CN106457365B (zh) 2019-03-26
JPWO2015182191A1 (ja) 2017-05-25
WO2015182191A1 (ja) 2015-12-03
EP3150299A4 (de) 2018-01-24
MX2016014035A (es) 2017-02-14
EP3150299A1 (de) 2017-04-05

Similar Documents

Publication Publication Date Title
EP2497931B1 (de) Zylinderkopf für Verbrennungsmotor mit integriertem Abgaskrümmer und in Krümmerteilen mündenden Abgasleitungsuntergruppen mit gegenseitiger Überlagerung und Distanzierung
EP2388463B1 (de) Zylinderkopf für Verbrennungskraftmaschine, mit integriertem Abgaskrümmer
US7992536B2 (en) Direct fuel injection diesel engine
US10294886B2 (en) Water jacket structure of cylinder head
AU2013391199B2 (en) Water cooling system for a cylinder head of an engine
EP3150299B1 (de) Zylinderkopf, brennkraftmaschine damit und kern zum formen eines ansaugkanals
US8714136B2 (en) Direct fuel-injection engine
JP2004270588A (ja) エンジンの吸気装置
KR20050006743A (ko) 린번 엔진의 흡기포트 및 그 코어
JP3622445B2 (ja) 直噴式内燃機関のシリンダヘッド製造方法
JP6402730B2 (ja) 中子の組み付け方法
CN213743705U (zh) 气缸盖及具有其的发动机
US10100776B2 (en) Preformed article for cylinder head, cylinder head, and method for manufacturing cylinder head
JP7136232B2 (ja) シリンダヘッド
JP7136233B2 (ja) シリンダヘッド
JPS62282746A (ja) 内燃機関用シリンダヘツドの鋳造用消失性模型
EP3244050B1 (de) Brennkraftmaschine mit einem zylinderkopf und verfahren zur herstellung einer brennkraftmaschine mit einem zylinderkopf
EP3910187B1 (de) Zylinderkopf
CN213478509U (zh) 气缸盖及发动机
JP2001152961A (ja) 筒内燃料噴射型内燃機関の構造
JP2011052562A (ja) 排気還流通路構造
JP2007002854A (ja) 直噴火花点火式内燃機関
WO2015198434A1 (ja) 内燃機関用ピストン
JPH1182031A (ja) エンジンの燃焼室構造
JP2014066191A (ja) ディーゼルエンジン

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20161124

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SATAKE TAKASHI

Inventor name: TOKURA KOICHI

Inventor name: IWAMURO NOBUO

Inventor name: ABE DAICHI

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20180102

RIC1 Information provided on ipc code assigned before grant

Ipc: F02M 69/00 20060101ALI20171219BHEP

Ipc: B22C 9/24 20060101AFI20171219BHEP

Ipc: F02F 1/24 20060101ALI20171219BHEP

Ipc: F02M 61/14 20060101ALI20171219BHEP

Ipc: F02F 1/42 20060101ALI20171219BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20200219

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

GRAL Information related to payment of fee for publishing/printing deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR3

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

GRAR Information related to intention to grant a patent recorded

Free format text: ORIGINAL CODE: EPIDOSNIGR71

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTC Intention to grant announced (deleted)
RIN1 Information on inventor provided before grant (corrected)

Inventor name: ABE DAICHI

Inventor name: SATAKE TAKASHI

Inventor name: IWAMURO NOBUO

Inventor name: TOKURA KOICHI

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

INTG Intention to grant announced

Effective date: 20200724

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TOKURA, KOICHI

Inventor name: ABE, DAICHI

Inventor name: SATAKE, TAKASHI

Inventor name: IWAMURO, NOBUO

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1308249

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200915

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602015058475

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

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

Ref country code: NO

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: 20201202

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: 20201203

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: 20200902

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: 20201202

Ref country code: SE

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: 20200902

Ref country code: LT

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: 20200902

Ref country code: HR

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: 20200902

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200902

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1308249

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200902

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

Ref country code: PL

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: 20200902

Ref country code: RS

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: 20200902

Ref country code: LV

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: 20200902

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: 20200902

Ref country code: SM

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: 20200902

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: 20200902

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: 20210104

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: 20200902

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: 20200902

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200902

Ref country code: AL

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: 20200902

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: 20200902

Ref country code: IS

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: 20210102

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602015058475

Country of ref document: DE

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

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: 20200902

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: 20210603

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

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: 20200902

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: 20200902

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200902

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210228

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: 20210225

Ref country code: LI

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

Effective date: 20210228

Ref country code: CH

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

Effective date: 20210228

Ref country code: IT

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: 20200902

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: 20210225

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602015058475

Country of ref document: DE

Owner name: NISSAN MOTOR CO., LTD., YOKOHAMA-SHI, JP

Free format text: FORMER OWNER: AICHI MACHINE INDUSTRY CO., LTD., NAGOYA-SHI, AICHI, JP

Ref country code: DE

Ref legal event code: R082

Ref document number: 602015058475

Country of ref document: DE

Representative=s name: GRUENECKER PATENT- UND RECHTSANWAELTE PARTG MB, DE

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 NON-PAYMENT OF DUE FEES

Effective date: 20210228

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20220721 AND 20220727

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

Ref country code: FR

Payment date: 20230119

Year of fee payment: 9

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; INVALID AB INITIO

Effective date: 20150225

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

Ref country code: GB

Payment date: 20230120

Year of fee payment: 9

Ref country code: DE

Payment date: 20230119

Year of fee payment: 9

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: 20200902