WO2018037844A1 - シリンダジャケット及びクロスヘッド式内燃機関 - Google Patents

シリンダジャケット及びクロスヘッド式内燃機関 Download PDF

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Publication number
WO2018037844A1
WO2018037844A1 PCT/JP2017/027770 JP2017027770W WO2018037844A1 WO 2018037844 A1 WO2018037844 A1 WO 2018037844A1 JP 2017027770 W JP2017027770 W JP 2017027770W WO 2018037844 A1 WO2018037844 A1 WO 2018037844A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder jacket
plate
base plate
frame
holes
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.)
Ceased
Application number
PCT/JP2017/027770
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English (en)
French (fr)
Japanese (ja)
Inventor
智史 飯間
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.)
Mitsubishi Heavy Industries Ltd
Japan Engine Corp
Original Assignee
Mitsubishi Heavy Industries Ltd
Japan Engine Corp
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 Mitsubishi Heavy Industries Ltd, Japan Engine Corp filed Critical Mitsubishi Heavy Industries Ltd
Priority to KR1020197005091A priority Critical patent/KR102146229B1/ko
Priority to CN201780051115.5A priority patent/CN109642514B/zh
Publication of WO2018037844A1 publication Critical patent/WO2018037844A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/0021—Construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/0021—Construction
    • F02F2007/0041—Fixing Bolts

Definitions

  • the present invention relates to a cylinder jacket constituting an internal combustion engine such as a diesel engine or a gas engine, and a crosshead internal combustion engine provided with the cylinder jacket.
  • a crankshaft is disposed below a plurality of cylinders along a cylinder arrangement direction.
  • the crankshaft is connected to the piston and rotatably supported by the crankcase via a bearing.
  • a crosshead is provided between the piston and the crankshaft.
  • the crosshead type internal combustion engine has a frame disposed on the upper portion of a base plate in which a crankshaft is accommodated, a cylinder jacket disposed on the upper portion of the frame, and integrally connected by a plurality of tie bolts.
  • the cylinder jacket, the frame and the base plate are disposed along the piston axial direction, and a plurality of tie bolts are vertically penetrated on both sides of the partition in the frame so as to sandwich the partition in the crankshaft axial direction.
  • a cross-head type internal combustion engine for example, there is one described in Patent Document 1 below.
  • the cylinder jacket, the frame and the base plate are arranged along the piston axial direction, and the through hole for the tie bolt to penetrate in the piston axial direction is formed.
  • the frame has a pair of through holes formed on both sides of the partition so as to sandwich the partition in the crankshaft axial direction
  • the cylinder jacket also has a pair of through holes formed at the same position.
  • the pair of through holes formed in the cylinder jacket can not be disposed close to each other in order to suppress a decrease in the rigidity of the peripheral portion.
  • An object of the present invention is to solve the problems described above, and to provide a cylinder jacket and a crosshead type internal combustion engine which can be reduced in size and weight while suppressing a decrease in synthesis of the peripheral portion of the through hole.
  • a cylinder jacket according to the present invention for achieving the above object is a top plate on which a first penetrating portion penetrating in a thickness direction is formed, and a first penetrating portion penetrating in a thickness direction and facing the first penetrating portion.
  • the plurality of connection members are closer as compared to the case where the attachment holes are provided for each of the plurality of connection members. It is possible to reduce the size and weight by shortening the length of the cylinder jacket.
  • the mounting hole is characterized by having a long hole shape.
  • the attachment hole into an elongated hole shape, it is possible to efficiently arrange the plurality of connection members, and to reduce the opening area of the attachment hole and to suppress the reduction in rigidity.
  • the mounting holes are provided on both sides in the width direction of the first through portion and the second through portion.
  • the cylinder jacket can be fastened with good balance by providing the mounting holes on both sides of each through portion.
  • the crosshead type internal combustion engine includes a base plate, a frame provided on the base plate, the cylinder jacket provided on the frame, the base plate and the frame, and the cylinder jacket And a plurality of connecting members for connecting the base plate, the frame, and the cylinder jacket through the mounting hole.
  • the cylinder jacket, the base plate, and the frame are integrally fastened by fixing the plurality of connecting members through the mounting hole of the cylinder jacket, the base plate, and the frame.
  • the plurality of connecting members can be disposed close to each other by inserting the plurality of connecting members into one mounting hole, and the length and the size and weight reduction of the internal combustion engine can be achieved. .
  • the plurality of connection members pass through the through hole of the frame, one end is screwed to the base plate and fixed, and the other end is inserted into the attachment hole And a washer disposed at an end of the mounting hole, and a nut is screwed and fastened.
  • the plurality of connecting members are fixed by screwing one end to the base plate and fixed by screwing the nut at the other end through the washer in the mounting hole.
  • the cylinder jacket and the base plate are properly fastened in a compressed state by the washer and the nut, and a high fastening force can be secured.
  • the hardness of the washer is characterized by being a material higher than the hardness of the cylinder jacket.
  • the washer with high hardness comes into contact with the cylinder jacket with high contact pressure due to the fastening force between the plurality of connecting members and the nut.
  • the cylinder jacket and the base plate can be properly fastened.
  • the cylinder jacket is provided with mounting holes through which the plurality of connecting members are inserted. Can be shortened, and reduction in size and weight can be achieved.
  • FIG. 1 is a schematic configuration view showing a diesel engine of the present embodiment.
  • FIG. 2 is a perspective view showing a cylinder jacket of the present embodiment.
  • FIG. 3 is a perspective view showing a frame.
  • FIG. 4 is a perspective view showing a base plate.
  • FIG. 5 is a plan view showing the fixing portion of the cylinder jacket.
  • FIG. 6 is a longitudinal sectional view showing a fixing portion of a cylinder jacket.
  • FIG. 7 is a longitudinal cross-sectional view showing the connection part of a cylinder jacket and a frame.
  • FIG. 8 is a longitudinal cross-sectional view showing a connection portion between a frame and a base plate.
  • FIG. 1 is a schematic view showing a diesel engine of the present embodiment.
  • the diesel engine 10 is, for example, a two-stroke, one-cycle, uniflow scavenging crosshead internal combustion engine that is used as a main engine for ship propulsion.
  • the diesel engine 10 includes a base plate 11 positioned below, a frame 12 provided on the base plate 11, and a cylinder jacket 13 provided on the frame 12.
  • the base plate 11, the structure 12, and the cylinder jacket 13 are integrally fastened and fixed by a plurality of tie bolts (connection members) 14 and nuts 15 extending in the piston axial direction.
  • the cylinder liner 16 is disposed in the cylinder jacket 13 and the cylinder cover 17 is fixed at the upper part to define a space, and the piston 18 is provided reciprocally on the piston shaft in this space to cause combustion.
  • a chamber 19 is formed.
  • the cylinder cover 17 is provided with an exhaust valve 20, and the exhaust valve 20 can be opened and closed by a valve gear 21.
  • the exhaust valve 20 opens and closes the combustion chamber 19 and the exhaust pipe 22.
  • fuel supplied from a fuel injection pump (not shown) for example, low-quality oil, natural gas, or a mixed fuel thereof
  • combustion gas for example, compressed by a compressor not shown
  • the piston 18 reciprocates by the energy generated by the combustion.
  • the exhaust valve 20 is actuated by the valve operating device 21 and the combustion chamber 19 is opened, the exhaust gas generated by the combustion is pushed out to the exhaust pipe 22, while the combustion gas is discharged from the scavenging port (not shown).
  • the upper end portion of the piston rod 23 is connected to the lower end portion of the piston 18.
  • the base plate 11 constitutes a crankcase, and a crankshaft 24 is rotatably supported by a bearing 25.
  • the lower end portion of the connecting rod 27 is rotatably connected to the crankshaft 24 via a crank 26.
  • the frames 12 are arranged such that guide plates 28 provided along the piston axial direction are in pairs at predetermined intervals in the width direction, and a crosshead 29 is formed between the pair of guide plates 28 in the piston axial direction. It is movably supported along the direction.
  • the lower end portion of the piston rod 23 is rotatably connected to the crosshead 29 and the upper end portion of the connecting rod 27 is rotatably connected.
  • the piston 18 to which energy is transmitted from the combustion chamber 19 is pushed down in the piston axial direction (the direction of the installation surface of the diesel engine 10) together with the piston rod 23. Then, the piston rod 23 pushes the crosshead 29 in the same direction, and rotates the crankshaft 24 via the connecting rod 27 and the crank 26.
  • FIG. 2 is a perspective view showing a cylinder jacket of the present embodiment
  • FIG. 3 is a perspective view showing a frame
  • FIG. 4 is a perspective view showing a base plate.
  • the base plate 11 includes a bearing base 31, a pair of partition walls 32 in the width direction, a pair of side plates 33 in the width direction, a pair of bottom plates 34 in the width direction, and a pair of ceilings in the width direction. And a plate 35.
  • the bearing stand 31 is connected to the frame 12 and supports from below the bearing 25 (see FIG. 1) of the crankshaft 24 extending in the crankshaft direction X along the piston axial direction Z.
  • the pair of partition walls 32 in the width direction is connected to both sides in the width direction Y of the bearing stand 31 along the piston axial direction Z.
  • the pair of side plates 33 in the width direction is connected to intersect with both sides of the pair of partition walls 32 in the width direction along the piston axial direction Z.
  • the pair of bottom plates 34 in the width direction is connected to the lower portions of the partition walls 32 and the side plates 33 along the horizontal direction.
  • the pair of top plates 35 in the width direction is connected to the top of the partition 32 and the pair of side plates 33 in the width direction along the horizontal direction.
  • the pair of partition walls 32 in the width direction may be integrally configured.
  • the base plate 11 is configured by integrally fixing the bearing base 31, the partition 32, the side plate 33, the bottom plate 34, and the top plate 35 by welding. Therefore, the base plate 11 is configured to surround the bearing base 31 fixed to the partition 32 by the side plate 33, the bottom plate 34, and the top plate 35. Further, an oil pan 36 is connected to the bottom of the bottom plate 34.
  • the partition walls 32 are disposed on both sides in the width direction Y of the base plate 11 with respect to the bearing base 31 in a direction orthogonal to the crank shaft direction.
  • the side plates 33 are arranged on both sides of the partition 32 in the width direction Y of the base plate 11 along the crankshaft direction X and along the direction orthogonal to the partition 32.
  • the bottom plate 34 is disposed at the lower end of the partition 32 and the side plate 33 in the piston axial direction Z
  • the top plate 35 is disposed at the upper end of the partition 32 and the side plate 33 in the piston axial direction Z.
  • the bottom plate 34 has an arched bent portion 37 which is convex toward the crankshaft 24 side.
  • the bent portion 37 of the bottom plate 34 has a horizontal member 37a disposed parallel to the bottom plate 34 and two inclined members 37b.
  • the horizontal member 37 a is located below the bearing stand 31 and above the bottom plate 34, and is connected to the lower part of the bearing stand 31.
  • Each inclined member 37b is connected to the lower portion of the side plate 33 in an inclined state so as to connect the bottom plate 34 and the horizontal member 37a to each other on both sides of the horizontal member 37a. Therefore, in the bending portion 37, each inclined member 37b supports the horizontal member 37a from diagonally below in the width direction, and the rigidity in the vicinity of the horizontal member 37a can be enhanced.
  • the bottom plate 34 does not need to be provided with the arched bent portion 37, and may be formed of a flat plate.
  • the lower end portion of the side plate 33 and the upper surface of the bottom plate 34 are connected by welding, and the vertical rib 38 is fixed by welding to the outside at the connecting portion of the side plate 33 and the bottom plate 34.
  • the vertical ribs 38 are disposed at the same position as the partition wall 32 in the crankshaft direction X at a pair on both sides to increase the rigidity of the lower side of the base plate 11 and suppress deformation in the direction perpendicular to the crankshaft direction X during operation. it can. That is, the vertical rib 38 can increase the rigidity in the width direction Y of the base plate 11, and can suppress the deformation in the width direction Y of the base plate 11 during operation.
  • the bearing stand 31 is provided with a thick portion 39 having a U-shape at the top, and the thick portion 39 can support the bearing 25 (see FIG. 1) from below.
  • the thick portion 39 is formed with a pair of screw holes 40 in the width direction so as to pass through the top plate 35 and open upward.
  • the two screw holes 40 are respectively provided on both sides in the width direction, and are arranged in parallel along the crankshaft direction X.
  • the frame 12 includes a pair of top plates 41 in the width direction, a pair of bottom plates 42 in the width direction, a pair of side plates 43 in the width direction, and a plurality of (seven in the present embodiment) And a bulkhead unit 44.
  • the pair of top plates 41 in the width direction is disposed at the top along the horizontal direction, and the cylinder jackets 13 (see FIG. 1) are connected.
  • the pair of bottom plates 42 in the width direction is disposed along the horizontal direction at the bottom and the base plate 11 (see FIG. 1) is connected.
  • the pair of side plates 43 in the width direction is disposed on the side in the width direction in the width direction Y, one end (lower end) in the piston axial direction Z is connected to the bottom plate 42, and the other end (upper end) It is connected to the board 41.
  • the bulkhead units 44 are disposed along the piston axial direction Z, and are disposed in parallel along the crankshaft direction X at regular intervals.
  • the frame 12 is configured by connecting the top plate 41, the bottom plate 42, and the side plate 43 by welding, and the space unit 45 is formed by the partition units 44.
  • the space 45 is a space where the cross head 29 (see FIG. 1) can be supported and moved by the guide plate 28.
  • the cross head 29 is accommodated in the space 45 and can be moved in the piston axial direction Z It can reciprocate along.
  • the top plate 41 is formed with a pair of through holes 46 in the width direction penetrating in the piston axial direction Z.
  • the two through holes 46 are respectively provided on both sides in the width direction, and are arranged in parallel along the crankshaft direction X.
  • the bottom plate 42 is formed with a pair of through holes 47 in the width direction penetrating in the piston axial direction Z.
  • the two through holes 47 are respectively provided on both sides in the width direction, and are arranged in parallel along the crankshaft direction X.
  • the partition unit 44 includes a central plate 48, a pair of intermediate plates 49 in the width direction, and a guide plate 28.
  • the central plate 48 forms a central portion in the width direction Y of the partition unit 44, and the pair of intermediate plates 49 in the width direction form both end portions in the width direction Y of the partition unit 44.
  • the guide plate 28 is disposed between the central plate 48 and each of the intermediate plates 49 in the bulkhead unit 44, and is connected by welding.
  • the cylinder jacket 13 includes a top plate 51, a bottom plate 52, a pair of side plates 53 in the width direction, and a partition plate 54.
  • the top plate 51 has a rectangular shape along the horizontal direction, and a plurality of first through holes (first through portions) 55 along the piston axial direction Z at predetermined intervals in the crankshaft direction X (two in the present embodiment) ) Is formed.
  • the bottom plate 52 has a rectangular shape along the horizontal direction, and a plurality of second through holes (second through holes) 56 along the piston axial direction Z at predetermined intervals in the crankshaft direction X (two in the present embodiment) It is formed.
  • the first through hole 55 and the second through hole 56 face each other in the piston axial direction Z, and the first through hole 55 is fitted with the cylinder liner 16 (see FIG. 1), and the second through hole 56 is a piston rod 23 is inserted axially movably.
  • One end of the side plate 53 in the width direction is connected to the top plate 51 at one end in the piston axial direction Z, the other end is connected to the bottom plate 52, and the communication hole 57 is formed at one side plate 53. .
  • the communication hole 57 of one side plate 53 communicates with the scavenging air trunk.
  • a projecting portion 58 continuous in the piston axial direction Z is formed on one end of the top plate 51 and the bottom plate 52 in the width direction Y and the side plate 53 side.
  • mounting holes 59 are formed in each projecting portion 58 along the piston axial direction Z.
  • mounting holes 59 are formed along the piston axial direction Z on the other end of the top plate 51 and the bottom plate 52 in the width direction Y and the other side plate 53 side.
  • the mounting holes 59 at one end of the top plate 51 in the width direction Y and the mounting holes 59 at the other end are formed at opposite sides in the width direction Y on both sides of the through holes 55 and 56.
  • the cylinder jacket 13 is configured by integrally fixing the top plate 51, the bottom plate 52, the pair of side plates 53 in the width direction, and the partition plate 54 by welding. Therefore, the cylinder jacket 13 is a block having a rectangular parallelepiped shape as a whole.
  • the frame 12 is disposed on the base plate 11, and the cylinder jacket 13 is placed on the frame 12, whereby the base plate 11, the frame 12 and the cylinder jacket 13 are provided. Is stacked along the piston axial direction Z.
  • the plurality of tie bolts 14 pass through the mounting holes 59 of the cylinder jacket 13 and the through holes 46 and 47 of the frame 12 and screw into the screw holes 40 of the base plate 11. It is tightened by screwing the nut 15 to each part.
  • the base plate 11, the frame 12, and the cylinder jacket 13 are integrally fastened.
  • the two adjacent tie bolts 14 are opposed to the frame 12 on both sides of the partition unit 44 (central plate 48). , And penetrate through the corresponding through holes 46 and 47, respectively.
  • the two adjacent tie bolts 14 are inserted into one mounting hole 59 with respect to the cylinder jacket 13.
  • FIG. 5 is a plan view showing the fixing portion of the cylinder jacket
  • FIG. 6 is a longitudinal sectional view showing the fixing portion of the cylinder jacket
  • FIG. 7 is a longitudinal sectional view showing a connecting portion of the cylinder jacket and the frame
  • FIG. It is a longitudinal cross-sectional view showing the connection part of a frame and a base plate.
  • the screw portion 14 a formed at the lower end portion is screwed into the screw hole 40 formed in the thick portion 39 of the base plate 11.
  • each tie bolt 14 disposed on both sides of the partition unit 44 (central plate 48) in the frame 12 are anti-vibration bushes (sway-resting means) at the small diameter portion 14b at the middle portion in the longitudinal direction.
  • Member) 61 is fixed, each tie bolt 14 penetrates the through hole 46 formed in the top plate 41 of the frame 12, and the anti-vibration bush 61 fixed to each small diameter portion 14b has a predetermined clearance in the through hole 46 respectively. It is located with.
  • the two tie bolts 14 disposed on both sides of the bulkhead unit 44 (central plate 48) in the frame 12 have one mounting hole whose upper end portion is formed in the cylinder jacket 13 A threaded portion 14c formed in the upper end portion is inserted upward in a uniform manner and protrudes upward.
  • a washer 62 is formed on the upper surface where each mounting hole 59 opens, and each of the two tie bolts 14 is a through hole 63 in which the upper end (screw portion 14 c) is formed in the washer 62.
  • the nut 15 is screwed into each threaded portion 14c.
  • the mounting hole 59 formed in the cylinder jacket 13 has a long hole shape elongated in the crankshaft direction X, the two tie bolts 14 do not contact each other, and the two tie bolts 14 are on the inner surface of the mounting hole 59 It is set to the inside diameter which does not touch.
  • the washer 62 has an elongated hole shape elongated in the crankshaft direction X, like the mounting hole 59, but the outer diameter is set to be larger than the inner diameter of the mounting hole 59.
  • the washer 62 is formed with a through hole 63 at a position where the two tie bolts 14 do not contact each other.
  • the cylinder jacket 13 is made of cast iron
  • the washer 62 is formed of, for example, a general structural rolled steel material so that the hardness is a material whose hardness is higher than that of the cylinder jacket 13.
  • the tie bolt 14 has a screw portion 14c formed at the upper end portion, penetrates each through hole 63 formed in the washer 62, and the nut 15 can be screwed into each screw portion 14c.
  • the plurality of tie bolts 14 are arranged on both sides of the bulkhead unit 44 in the frame 12 so as not to contact the central plate 48, whereby the position of the tie bolts 14 in the crankshaft direction X is determined. Therefore, when the position of the tie bolt 14 is determined, the formation position of the screw hole 40 in the base plate 11 according to the position of the tie bolt 14, the formation position of the through holes 46 and 47 in the frame 12, and the attachment hole 59 in the cylinder jacket 13. The position is decided.
  • one washer 62 is inserted into the upper end portion of each tie bolt 14 protruding upward from the mounting hole 59 in the cylinder jacket 13, and a nut 15 is screwed into each screw portion 14 c. Then, by the screwing of the nut 15 with the screw portion 14 c of the tie bolt 14, a tensile force acts on the tie bolt 14 in the axial direction (piston axial direction Z) upward, and the upper surface of the cylinder jacket 13 and the lower surface of the washer 62, washer 62 The compression force acts on the upper surface of the base and the lower surface of the nut 15, whereby the base plate 11, the frame 12 and the cylinder jacket 13 are in close contact with each other and fastened.
  • the contact area between the upper surface of the cylinder jacket 13 and the lower surface of the washer 62 is preferably set larger than the contact area between the upper surface of the washer 62 and the lower surface of the nut 15. With this configuration, a large surface pressure is generated between the upper surface of the cylinder jacket 13 and the lower surface of the washer 62, and the movement of the washer 62 relative to the cylinder jacket 13 is blocked.
  • the plurality of tie bolts 14 are inserted through one mounting hole 59, the plurality of tie bolts 14 can be disposed closer to each other than the configuration in which the mounting holes are provided for each of the plurality of tie bolts 14.
  • the length of the crank shaft direction X at 13 can be shortened to reduce the size and weight of the cylinder jacket 13.
  • the mounting hole 59 has an elongated shape. Therefore, by arranging the plurality of tie bolts 14 in parallel along the longitudinal direction of the mounting hole 59, the plurality of tie bolts 14 can be efficiently arranged, and the opening area of the mounting hole 59 can be reduced. It is possible to suppress the decrease in rigidity of the
  • the mounting holes 59 are provided on both sides of the first through hole 55 and the second through hole 56. Therefore, the cylinder jacket 13 can be fastened with good balance.
  • the base plate 11, the frame 12 provided on the base plate 11, the cylinder jacket 13 provided on the frame 12, the base plate 11, and the frame 12 A plurality of tie bolts 14 are provided which penetrate the base plate 11, the frame 12, and the cylinder jacket 13 through the attachment holes 59 of the cylinder jacket 13.
  • the cylinder jacket 13, the structure 12, and the base plate 11 are integrally fastened by the plurality of tie bolts 14.
  • the plurality of tie bolts 14 are inserted into one attachment hole 59, thereby a plurality of tie bolts. 14 can be disposed close to each other, and the overall length of the diesel engine 10 can be shortened to reduce the size and weight.
  • the plurality of tie bolts 14 pass through the through holes 46 of the frame 12, one end is screwed into and fixed to the base plate 11, and the other end is inserted into the mounting hole 59.
  • the nut 15 is screwed and tightened through a washer 62 disposed at the end of the mounting hole 59. Therefore, the cylinder jacket 13, the structure 12 and the base plate 11 are properly fastened in a compressed state by the plurality of tie bolts 14, the washers 62 and the nuts 15, and a high fastening force can be secured.
  • the hardness of the washer 62 is made of a material higher than the hardness of the cylinder jacket 13. Therefore, the washer 62 with high hardness comes into contact with the cylinder jacket 13 with high contact pressure due to the fastening force of the plurality of tie bolts 14 and the nuts 15, and the cylinder jacket 13, the structure 12 and the base plate 11 are appropriate. Can be concluded.
  • the plurality of tie bolts 14 are provided with anti-vibration bushes 61 at positions facing the through holes 46 of the frame 12. Therefore, the tie bolt 14 whose ends are fixed to the cylinder jacket 13 and the base plate 11 is supported by the frame 12 at the intermediate portion via the anti-vibration bush 61, so that the tie bolt 14 is prevented from swinging and the cylinder The jacket 13, the frame 12, and the base plate 11 can be properly fastened.
  • the mounting hole 59 of the cylinder jacket 13 has a long hole shape, but it is not limited to this shape, and may be a perfect circular shape, an elliptical shape, a polygonal shape or the like.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
PCT/JP2017/027770 2016-08-23 2017-07-31 シリンダジャケット及びクロスヘッド式内燃機関 Ceased WO2018037844A1 (ja)

Priority Applications (2)

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KR1020197005091A KR102146229B1 (ko) 2016-08-23 2017-07-31 실린더 재킷 및 크로스헤드식 내연 기관
CN201780051115.5A CN109642514B (zh) 2016-08-23 2017-07-31 十字头式内燃机

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JP2016162897A JP6813989B2 (ja) 2016-08-23 2016-08-23 クロスヘッド式内燃機関
JP2016-162897 2016-08-23

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JP7403321B2 (ja) * 2020-01-10 2023-12-22 株式会社ジャパンエンジンコーポレーション 架構
JP7414547B2 (ja) * 2020-01-21 2024-01-16 株式会社ジャパンエンジンコーポレーション 台板
CN113217220B (zh) * 2021-05-26 2022-07-26 河南柴油机重工有限责任公司 一种单缸机机体
CN113357039B (zh) * 2021-07-19 2022-06-03 赣州市领沃电子科技有限公司 一种可拆卸式发动机线束塑壳保护外壳

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